src/vm/appdomain.cpp

   1 // Licensed to the .NET Foundation under one or more agreements.
   2 // The .NET Foundation licenses this file to you under the MIT license.
   3 // See the LICENSE file in the project root for more information.
   4
   5
   6 #include "common.h"
   7
   8 #include "appdomain.hpp"
   9 #include "peimagelayout.inl"
  10 #include "field.h"
  11 #include "strongnameinternal.h"
  12 #include "excep.h"
  13 #include "eeconfig.h"
  14 #include "gcheaputilities.h"
  15 #include "eventtrace.h"
  16 #include "perfcounters.h"
  17 #include "assemblyname.hpp"
  18 #include "eeprofinterfaces.h"
  19 #include "dbginterface.h"
  20 #ifndef DACCESS_COMPILE
  21 #include "eedbginterfaceimpl.h"
  22 #endif
  23 #include "comdynamic.h"
  24 #include "mlinfo.h"
  25 #include "posterror.h"
  26 #include "assemblynative.hpp"
  27 #include "shimload.h"
  28 #include "stringliteralmap.h"
  29 #include "codeman.h"
  30 #include "comcallablewrapper.h"
  31 #include "apithreadstress.h"
  32 #include "eventtrace.h"
  33 #include "comdelegate.h"
  34 #include "siginfo.hpp"
  35 #include "typekey.h"
  36
  37 #include "caparser.h"
  38 #include "ecall.h"
  39 #include "finalizerthread.h"
  40 #include "threadsuspend.h"
  41
  42 #ifdef FEATURE_PREJIT
  43 #include "corcompile.h"
  44 #include "compile.h"
  45 #endif // FEATURE_PREJIT
  46
  47 #ifdef FEATURE_COMINTEROP
  48 #include "comtoclrcall.h"
  49 #include "runtimecallablewrapper.h"
  50 #include "mngstdinterfaces.h"
  51 #include "olevariant.h"
  52 #include "rcwrefcache.h"
  53 #include "olecontexthelpers.h"
  54 #endif // FEATURE_COMINTEROP
  55 #ifdef FEATURE_TYPEEQUIVALENCE
  56 #include "typeequivalencehash.hpp"
  57 #endif
  58
  59 #include "appdomain.inl"
  60 #include "typeparse.h"
  61 #include "mdaassistants.h"
  62 #include "threadpoolrequest.h"
  63
  64 #include "nativeoverlapped.h"
  65
  66 #ifndef FEATURE_PAL
  67 #include "dwreport.h"
  68 #endif // !FEATURE_PAL
  69
  70 #include "stringarraylist.h"
  71
  72 #include "../binder/inc/clrprivbindercoreclr.h"
  73
  74
  75 #include "clrprivtypecachewinrt.h"
  76
  77
  78 #pragma warning(push)
  79 #pragma warning(disable:4324)
  80 #include "marvin32.h"
  81 #pragma warning(pop)
  82
  83 // this file handles string conversion errors for itself
  84 #undef  MAKE_TRANSLATIONFAILED
  85
  86 // Define these macro's to do strict validation for jit lock and class
  87 // init entry leaks.  This defines determine if the asserts that
  88 // verify for these leaks are defined or not.  These asserts can
  89 // sometimes go off even if no entries have been leaked so this
  90 // defines should be used with caution.
  91 //
  92 // If we are inside a .cctor when the application shut's down then the
  93 // class init lock's head will be set and this will cause the assert
  94 // to go off.
  95 //
  96 // If we are jitting a method when the application shut's down then
  97 // the jit lock's head will be set causing the assert to go off.
  98
  99 //#define STRICT_CLSINITLOCK_ENTRY_LEAK_DETECTION
 100
 101 static const WCHAR DEFAULT_DOMAIN_FRIENDLY_NAME[] = W("DefaultDomain");
 102 static const WCHAR OTHER_DOMAIN_FRIENDLY_NAME_PREFIX[] = W("Domain");
 103
 104 #define STATIC_OBJECT_TABLE_BUCKET_SIZE 1020
 105
 106 #define MAX_URL_LENGTH                  2084 // same as INTERNET_MAX_URL_LENGTH
 107
 108 //#define _DEBUG_ADUNLOAD 1
 109
 110 HRESULT RunDllMain(MethodDesc *pMD, HINSTANCE hInst, DWORD dwReason, LPVOID lpReserved); // clsload.cpp
 111
 112
 113
 114
 115
 116 // Statics
 117
 118 SPTR_IMPL(SystemDomain, SystemDomain, m_pSystemDomain);
 119 SVAL_IMPL(ArrayListStatic, SystemDomain, m_appDomainIndexList);
 120 SPTR_IMPL(SharedDomain, SharedDomain, m_pSharedDomain);
 121 SVAL_IMPL(BOOL, SystemDomain, s_fForceDebug);
 122 SVAL_IMPL(BOOL, SystemDomain, s_fForceProfiling);
 123 SVAL_IMPL(BOOL, SystemDomain, s_fForceInstrument);
 124
 125 #ifndef DACCESS_COMPILE
 126
 127 // Base Domain Statics
 128 CrstStatic          BaseDomain::m_SpecialStaticsCrst;
 129
 130 int                 BaseDomain::m_iNumberOfProcessors = 0;
 131
 132 // Shared Domain Statics
 133 DECLSPEC_ALIGN(16)
 134 static BYTE         g_pSharedDomainMemory[sizeof(SharedDomain)];
 135
 136 // System Domain Statics
 137 GlobalStringLiteralMap* SystemDomain::m_pGlobalStringLiteralMap = NULL;
 138
 139 DECLSPEC_ALIGN(16)
 140 static BYTE         g_pSystemDomainMemory[sizeof(SystemDomain)];
 141
 142 #ifdef FEATURE_APPDOMAIN_RESOURCE_MONITORING
 143 size_t              SystemDomain::m_totalSurvivedBytes = 0;
 144 #endif //FEATURE_APPDOMAIN_RESOURCE_MONITORING
 145
 146 CrstStatic          SystemDomain::m_SystemDomainCrst;
 147 CrstStatic          SystemDomain::m_DelayedUnloadCrst;
 148
 149 ULONG               SystemDomain::s_dNumAppDomains = 0;
 150
 151 AppDomain *         SystemDomain::m_pAppDomainBeingUnloaded = NULL;
 152 ADIndex             SystemDomain::m_dwIndexOfAppDomainBeingUnloaded;
 153 Thread            *SystemDomain::m_pAppDomainUnloadRequestingThread = 0;
 154 Thread            *SystemDomain::m_pAppDomainUnloadingThread = 0;
 155
 156 ArrayListStatic     SystemDomain::m_appDomainIdList;
 157
 158 DWORD               SystemDomain::m_dwLowestFreeIndex        = 0;
 159
 160
 161
 162 // comparison function to be used for matching clsids in our clsid hash table
 163 BOOL CompareCLSID(UPTR u1, UPTR u2)
 164 {
 165     CONTRACTL
 166     {
 167         THROWS;
 168         GC_TRIGGERS;
 169         MODE_ANY;
 170         SO_INTOLERANT;
 171         INJECT_FAULT(COMPlusThrowOM(););
 172     }
 173     CONTRACTL_END;
 174
 175     GUID *pguid = (GUID *)(u1 << 1);
 176     _ASSERTE(pguid != NULL);
 177
 178     MethodTable *pMT= (MethodTable *)u2;
 179     _ASSERTE(pMT!= NULL);
 180
 181     GUID guid;
 182     pMT->GetGuid(&guid, TRUE);
 183     if (!IsEqualIID(guid, *pguid))
 184         return FALSE;
 185
 186     return TRUE;
 187 }
 188
 189 #ifndef CROSSGEN_COMPILE
 190 // Constructor for the LargeHeapHandleBucket class.
 191 LargeHeapHandleBucket::LargeHeapHandleBucket(LargeHeapHandleBucket *pNext, DWORD Size, BaseDomain *pDomain, BOOL bCrossAD)
 192 : m_pNext(pNext)
 193 , m_ArraySize(Size)
 194 , m_CurrentPos(0)
 195 , m_CurrentEmbeddedFreePos(0) // hint for where to start a search for an embedded free item
 196 {
 197     CONTRACTL
 198     {
 199         THROWS;
 200         GC_TRIGGERS;
 201         MODE_COOPERATIVE;
 202         PRECONDITION(CheckPointer(pDomain));
 203         INJECT_FAULT(COMPlusThrowOM(););
 204     }
 205     CONTRACTL_END;
 206
 207     PTRARRAYREF HandleArrayObj;
 208
 209     // Allocate the array in the large object heap.
 210     if (!bCrossAD)
 211     {
 212         OVERRIDE_TYPE_LOAD_LEVEL_LIMIT(CLASS_LOADED);
 213         HandleArrayObj = (PTRARRAYREF)AllocateObjectArray(Size, g_pObjectClass, TRUE);
 214     }
 215     else
 216     {
 217         // During AD creation we don't want to assign the handle array to the currently running AD but
 218         // to the AD being created.  Ensure that AllocateArrayEx doesn't set the AD and then set it here.
 219         AppDomain *pAD = pDomain->AsAppDomain();
 220         _ASSERTE(pAD);
 221         _ASSERTE(pAD->IsBeingCreated());
 222
 223         OBJECTREF array;
 224         {
 225             OVERRIDE_TYPE_LOAD_LEVEL_LIMIT(CLASS_LOADED);
 226             array = AllocateArrayEx(
 227                 ClassLoader::LoadArrayTypeThrowing(g_pObjectClass),
 228                 (INT32 *)(&Size),
 229                 1,
 230                 TRUE
 231                 DEBUG_ARG(TRUE));
 232         }
 233
 234         array->SetAppDomain(pAD);
 235
 236         HandleArrayObj = (PTRARRAYREF)array;
 237     }
 238
 239     // Retrieve the pointer to the data inside the array. This is legal since the array
 240     // is located in the large object heap and is guaranteed not to move.
 241     m_pArrayDataPtr = (OBJECTREF *)HandleArrayObj->GetDataPtr();
 242
 243     // Store the array in a strong handle to keep it alive.
 244     m_hndHandleArray = pDomain->CreatePinningHandle((OBJECTREF)HandleArrayObj);
 245 }
 246
 247
 248 // Destructor for the LargeHeapHandleBucket class.
 249 LargeHeapHandleBucket::~LargeHeapHandleBucket()
 250 {
 251     CONTRACTL
 252     {
 253         NOTHROW;
 254         GC_NOTRIGGER;
 255     }
 256     CONTRACTL_END;
 257
 258     if (m_hndHandleArray)
 259     {
 260         DestroyPinningHandle(m_hndHandleArray);
 261         m_hndHandleArray = NULL;
 262     }
 263 }
 264
 265
 266 // Allocate handles from the bucket.
 267 OBJECTREF *LargeHeapHandleBucket::AllocateHandles(DWORD nRequested)
 268 {
 269     CONTRACTL
 270     {
 271         NOTHROW;
 272         GC_NOTRIGGER;
 273         MODE_COOPERATIVE;
 274     }
 275     CONTRACTL_END;
 276
 277     _ASSERTE(nRequested > 0 && nRequested <= GetNumRemainingHandles());
 278     _ASSERTE(m_pArrayDataPtr == (OBJECTREF*)((PTRARRAYREF)ObjectFromHandle(m_hndHandleArray))->GetDataPtr());
 279
 280     // Store the handles in the buffer that was passed in
 281     OBJECTREF* ret = &m_pArrayDataPtr[m_CurrentPos];
 282     m_CurrentPos += nRequested;
 283
 284     return ret;
 285 }
 286
 287 // look for a free item embedded in the table
 288 OBJECTREF *LargeHeapHandleBucket::TryAllocateEmbeddedFreeHandle()
 289 {
 290     CONTRACTL
 291     {
 292         NOTHROW;
 293         GC_NOTRIGGER;
 294         MODE_COOPERATIVE;
 295     }
 296     CONTRACTL_END;
 297
 298     OBJECTREF pPreallocatedSentinalObject = ObjectFromHandle(g_pPreallocatedSentinelObject);
 299     _ASSERTE(pPreallocatedSentinalObject  != NULL);
 300
 301     for (int  i = m_CurrentEmbeddedFreePos; i < m_CurrentPos; i++)
 302     {
 303         if (m_pArrayDataPtr[i] == pPreallocatedSentinalObject)
 304         {
 305             m_CurrentEmbeddedFreePos = i;
 306             m_pArrayDataPtr[i] = NULL;
 307             return &m_pArrayDataPtr[i];
 308         }
 309     }
 310
 311     // didn't find it (we don't bother wrapping around for a full search, it's not worth it to try that hard, we'll get it next time)
 312
 313     m_CurrentEmbeddedFreePos = 0;
 314     return NULL;
 315 }
 316
 317
 318 // Maximum bucket size will be 64K on 32-bit and 128K on 64-bit.
 319 // We subtract out a small amount to leave room for the object
 320 // header and length of the array.
 321
 322 #define MAX_BUCKETSIZE (16384 - 4)
 323
 324 // Constructor for the LargeHeapHandleTable class.
 325 LargeHeapHandleTable::LargeHeapHandleTable(BaseDomain *pDomain, DWORD InitialBucketSize)
 326 : m_pHead(NULL)
 327 , m_pDomain(pDomain)
 328 , m_NextBucketSize(InitialBucketSize)
 329 , m_pFreeSearchHint(NULL)
 330 , m_cEmbeddedFree(0)
 331 {
 332     CONTRACTL
 333     {
 334         THROWS;
 335         GC_TRIGGERS;
 336         MODE_COOPERATIVE;
 337         PRECONDITION(CheckPointer(pDomain));
 338         INJECT_FAULT(COMPlusThrowOM(););
 339     }
 340     CONTRACTL_END;
 341
 342 #ifdef _DEBUG
 343     m_pCrstDebug = NULL;
 344 #endif
 345 }
 346
 347
 348 // Destructor for the LargeHeapHandleTable class.
 349 LargeHeapHandleTable::~LargeHeapHandleTable()
 350 {
 351     CONTRACTL
 352     {
 353         NOTHROW;
 354         GC_NOTRIGGER;
 355     }
 356     CONTRACTL_END;
 357
 358     // Delete the buckets.
 359     while (m_pHead)
 360     {
 361         LargeHeapHandleBucket *pOld = m_pHead;
 362         m_pHead = pOld->GetNext();
 363         delete pOld;
 364     }
 365 }
 366
 367 //*****************************************************************************
 368 //
 369 // LOCKING RULES FOR AllocateHandles() and ReleaseHandles()  12/08/2004
 370 //
 371 //
 372 // These functions are not protected by any locking in this location but rather the callers are
 373 // assumed to be doing suitable locking  for the handle table.  The handle table itself is
 374 // behaving rather like a thread-agnostic collection class -- it doesn't want to know
 375 // much about the outside world and so it is just doing its job with no awareness of
 376 // thread notions.
 377 //
 378 // The instance in question is
 379 // There are two locations you can find a LargeHeapHandleTable
 380 // 1) there is one in every BaseDomain, it is used to keep track of the static members
 381 //     in that domain
 382 // 2) there is one in the System Domain that is used for the GlobalStringLiteralMap
 383 //
 384 // the one in (2) is not the same as the one that is in the BaseDomain object that corresponds
 385 // to the SystemDomain -- that one is basically stilborn because the string literals don't go
 386 // there and of course the System Domain has no code loaded into it -- only regular
 387 // AppDomains (like Domain 0) actually execute code.  As a result handle tables are in
 388 // practice used either for string literals or for static members but never for both.
 389 // At least not at this writing.
 390 //
 391 // Now it's useful to consider what the locking discipline is for these classes.
 392 //
 393 // ---------
 394 //
 395 // First case: (easiest) is the statics members
 396 //
 397 // Each BaseDomain has its own critical section
 398 //
 399 // BaseDomain::AllocateObjRefPtrsInLargeTable takes a lock with
 400 //        CrstHolder ch(&m_LargeHeapHandleTableCrst);
 401 //
 402 // it does this before it calls AllocateHandles which suffices.  It does not call ReleaseHandles
 403 // at any time (although ReleaseHandles may be called via AllocateHandles if the request
 404 // doesn't fit in the current block, the remaining handles at the end of the block are released
 405 // automatically as part of allocation/recycling)
 406 //
 407 // note: Recycled handles are only used during String Literal allocation because we only try
 408 // to recycle handles if the allocation request is for exactly one handle.
 409 //
 410 // The handles in the BaseDomain handle table are released when the Domain is unloaded
 411 // as the GC objects become rootless at that time.
 412 //
 413 // This dispenses with all of the Handle tables except the one that is used for string literals
 414 //
 415 // ---------
 416 //
 417 // Second case:  Allocation for use in a string literal
 418 //
 419 // AppDomainStringLiteralMap::GetStringLiteral
 420 // leads to calls to
 421 //     LargeHeapHandleBlockHolder constructor
 422 //     leads to calls to
 423 //          m_Data = pOwner->AllocateHandles(nCount);
 424 //
 425 // before doing this  AppDomainStringLiteralMap::GetStringLiteral takes this lock
 426 //
 427 //    CrstHolder gch(&(SystemDomain::GetGlobalStringLiteralMap()->m_HashTableCrstGlobal));
 428 //
 429 // which is the lock for the hash table that it owns
 430 //
 431 // STRINGREF *AppDomainStringLiteralMap::GetInternedString
 432 //
 433 // has a similar call path and uses the same approach and  the same lock
 434 // this covers all the paths which allocate
 435 //
 436 // ---------
 437 //
 438 // Third case:  Releases for use in a string literal entry
 439 //
 440 // CrstHolder gch(&(SystemDomain::GetGlobalStringLiteralMap()->m_HashTableCrstGlobal));
 441 // taken in the AppDomainStringLiteralMap functions below protects the 4 ways that this can happen
 442 //
 443 // case 3a)
 444 //
 445 // in an appdomain unload case
 446 //
 447 // AppDomainStringLiteralMap::~AppDomainStringLiteralMap() takes the lock then
 448 // leads to calls to
 449 //     StringLiteralEntry::Release
 450 //    which leads to
 451 //        SystemDomain::GetGlobalStringLiteralMapNoCreate()->RemoveStringLiteralEntry(this)
 452 //        which leads to
 453 //            m_LargeHeapHandleTable.ReleaseHandles((OBJECTREF*)pObjRef, 1);
 454 //
 455 // case 3b)
 456 //
 457 // AppDomainStringLiteralMap::GetStringLiteral() can call StringLiteralEntry::Release in some
 458 // error cases, leading to the same stack as above
 459 //
 460 // case 3c)
 461 //
 462 // AppDomainStringLiteralMap::GetInternedString() can call StringLiteralEntry::Release in some
 463 // error cases, leading to the same stack as above
 464 //
 465 // case 3d)
 466 //
 467 // The same code paths in 3b and 3c and also end up releasing if an exception is thrown
 468 // during their processing.  Both these paths use a StringLiteralEntryHolder to assist in cleanup,
 469 // the StaticRelease method of the StringLiteralEntry gets called, which in turn calls the
 470 // Release method.
 471
 472
 473 // Allocate handles from the large heap handle table.
 474 OBJECTREF* LargeHeapHandleTable::AllocateHandles(DWORD nRequested, BOOL bCrossAD)
 475 {
 476     CONTRACTL
 477     {
 478         THROWS;
 479         GC_TRIGGERS;
 480         MODE_COOPERATIVE;
 481         PRECONDITION(nRequested > 0);
 482         INJECT_FAULT(COMPlusThrowOM(););
 483     }
 484     CONTRACTL_END;
 485
 486     // SEE "LOCKING RULES FOR AllocateHandles() and ReleaseHandles()" above
 487
 488     // the lock must be registered and already held by the caller per contract
 489 #ifdef _DEBUG
 490     _ASSERTE(m_pCrstDebug != NULL);
 491     _ASSERTE(m_pCrstDebug->OwnedByCurrentThread());
 492 #endif
 493
 494     if (nRequested == 1 && m_cEmbeddedFree != 0)
 495     {
 496         // special casing singleton requests to look for slots that can be re-used
 497
 498         // we need to do this because string literals are allocated one at a time and then sometimes
 499         // released.  we do not wish for the number of handles consumed by string literals to
 500         // increase forever as assemblies are loaded and unloaded
 501
 502         if (m_pFreeSearchHint == NULL)
 503             m_pFreeSearchHint = m_pHead;
 504
 505         while (m_pFreeSearchHint)
 506         {
 507             OBJECTREF* pObjRef = m_pFreeSearchHint->TryAllocateEmbeddedFreeHandle();
 508             if (pObjRef != NULL)
 509             {
 510                 // the slot is to have been prepared with a null ready to go
 511                 _ASSERTE(*pObjRef == NULL);
 512                 m_cEmbeddedFree--;
 513                 return pObjRef;
 514             }
 515             m_pFreeSearchHint = m_pFreeSearchHint->GetNext();
 516         }
 517
 518         // the search doesn't wrap around so it's possible that we might have embedded free items
 519         // and not find them but that's ok, we'll get them on the next alloc... all we're trying to do
 520         // is to not have big leaks over time.
 521     }
 522
 523
 524     // Retrieve the remaining number of handles in the bucket.
 525     DWORD NumRemainingHandlesInBucket = (m_pHead != NULL) ? m_pHead->GetNumRemainingHandles() : 0;
 526
 527     // create a new block if this request doesn't fit in the current block
 528     if (nRequested > NumRemainingHandlesInBucket)
 529     {
 530         if (m_pHead != NULL)
 531         {
 532             // mark the handles in that remaining region as available for re-use
 533             ReleaseHandles(m_pHead->CurrentPos(), NumRemainingHandlesInBucket);
 534
 535             // mark what's left as having been used
 536             m_pHead->ConsumeRemaining();
 537         }
 538
 539         // create a new bucket for this allocation
 540
 541         // We need a block big enough to hold the requested handles
 542         DWORD NewBucketSize = max(m_NextBucketSize, nRequested);
 543
 544         m_pHead = new LargeHeapHandleBucket(m_pHead, NewBucketSize, m_pDomain, bCrossAD);
 545
 546         m_NextBucketSize = min(m_NextBucketSize * 2, MAX_BUCKETSIZE);
 547     }
 548
 549     return m_pHead->AllocateHandles(nRequested);
 550 }
 551
 552 //*****************************************************************************
 553 // Release object handles allocated using AllocateHandles().
 554 void LargeHeapHandleTable::ReleaseHandles(OBJECTREF *pObjRef, DWORD nReleased)
 555 {
 556     CONTRACTL
 557     {
 558         NOTHROW;
 559         GC_NOTRIGGER;
 560         MODE_COOPERATIVE;
 561         PRECONDITION(CheckPointer(pObjRef));
 562     }
 563     CONTRACTL_END;
 564
 565     // SEE "LOCKING RULES FOR AllocateHandles() and ReleaseHandles()" above
 566
 567     // the lock must be registered and already held by the caller per contract
 568 #ifdef _DEBUG
 569     _ASSERTE(m_pCrstDebug != NULL);
 570     _ASSERTE(m_pCrstDebug->OwnedByCurrentThread());
 571 #endif
 572
 573     OBJECTREF pPreallocatedSentinalObject = ObjectFromHandle(g_pPreallocatedSentinelObject);
 574     _ASSERTE(pPreallocatedSentinalObject  != NULL);
 575
 576
 577     // Add the released handles to the list of available handles.
 578     for (DWORD i = 0; i < nReleased; i++)
 579     {
 580         SetObjectReference(&pObjRef[i], pPreallocatedSentinalObject, NULL);
 581     }
 582
 583     m_cEmbeddedFree += nReleased;
 584 }
 585
 586
 587
 588
 589 // Constructor for the ThreadStaticHandleBucket class.
 590 ThreadStaticHandleBucket::ThreadStaticHandleBucket(ThreadStaticHandleBucket *pNext, DWORD Size, BaseDomain *pDomain)
 591 : m_pNext(pNext)
 592 , m_ArraySize(Size)
 593 {
 594     CONTRACTL
 595     {
 596         THROWS;
 597         GC_TRIGGERS;
 598         MODE_COOPERATIVE;
 599         PRECONDITION(CheckPointer(pDomain));
 600         INJECT_FAULT(COMPlusThrowOM(););
 601     }
 602     CONTRACTL_END;
 603
 604     PTRARRAYREF HandleArrayObj;
 605
 606     // Allocate the array on the GC heap.
 607     OVERRIDE_TYPE_LOAD_LEVEL_LIMIT(CLASS_LOADED);
 608     HandleArrayObj = (PTRARRAYREF)AllocateObjectArray(Size, g_pObjectClass, FALSE);
 609
 610     // Store the array in a strong handle to keep it alive.
 611     m_hndHandleArray = pDomain->CreateStrongHandle((OBJECTREF)HandleArrayObj);
 612 }
 613
 614 // Destructor for the ThreadStaticHandleBucket class.
 615 ThreadStaticHandleBucket::~ThreadStaticHandleBucket()
 616 {
 617     CONTRACTL
 618     {
 619         NOTHROW;
 620         GC_NOTRIGGER;
 621         MODE_COOPERATIVE;
 622     }
 623     CONTRACTL_END;
 624
 625     if (m_hndHandleArray)
 626     {
 627         DestroyStrongHandle(m_hndHandleArray);
 628         m_hndHandleArray = NULL;
 629     }
 630 }
 631
 632 // Allocate handles from the bucket.
 633 OBJECTHANDLE ThreadStaticHandleBucket::GetHandles()
 634 {
 635     CONTRACTL
 636     {
 637         NOTHROW;
 638         GC_NOTRIGGER;
 639         MODE_COOPERATIVE;
 640     }
 641     CONTRACTL_END;
 642
 643     return m_hndHandleArray;
 644 }
 645
 646 // Constructor for the ThreadStaticHandleTable class.
 647 ThreadStaticHandleTable::ThreadStaticHandleTable(BaseDomain *pDomain)
 648 : m_pHead(NULL)
 649 , m_pDomain(pDomain)
 650 {
 651     CONTRACTL
 652     {
 653         NOTHROW;
 654         GC_NOTRIGGER;
 655         MODE_ANY;
 656         PRECONDITION(CheckPointer(pDomain));
 657     }
 658     CONTRACTL_END;
 659 }
 660
 661 // Destructor for the ThreadStaticHandleTable class.
 662 ThreadStaticHandleTable::~ThreadStaticHandleTable()
 663 {
 664     CONTRACTL
 665     {
 666         NOTHROW;
 667         GC_NOTRIGGER;
 668     }
 669     CONTRACTL_END;
 670
 671     // Delete the buckets.
 672     while (m_pHead)
 673     {
 674         ThreadStaticHandleBucket *pOld = m_pHead;
 675         m_pHead = pOld->GetNext();
 676         delete pOld;
 677     }
 678 }
 679
 680 // Allocate handles from the large heap handle table.
 681 OBJECTHANDLE ThreadStaticHandleTable::AllocateHandles(DWORD nRequested)
 682 {
 683     CONTRACTL
 684     {
 685         THROWS;
 686         GC_TRIGGERS;
 687         MODE_COOPERATIVE;
 688         PRECONDITION(nRequested > 0);
 689         INJECT_FAULT(COMPlusThrowOM(););
 690     }
 691     CONTRACTL_END;
 692
 693     // create a new bucket for this allocation
 694     m_pHead = new ThreadStaticHandleBucket(m_pHead, nRequested, m_pDomain);
 695
 696     return m_pHead->GetHandles();
 697 }
 698
 699 #endif // CROSSGEN_COMPILE
 700
 701
 702 //*****************************************************************************
 703 // BaseDomain
 704 //*****************************************************************************
 705 void BaseDomain::Attach()
 706 {
 707     m_SpecialStaticsCrst.Init(CrstSpecialStatics);
 708 }
 709
 710 BaseDomain::BaseDomain()
 711 {
 712     // initialize fields so the domain can be safely destructed
 713     // shouldn't call anything that can fail here - use ::Init instead
 714     CONTRACTL
 715     {
 716         THROWS;
 717         GC_TRIGGERS;
 718         MODE_ANY;
 719         FORBID_FAULT;
 720     }
 721     CONTRACTL_END;
 722
 723     m_fDisableInterfaceCache = FALSE;
 724
 725     m_pFusionContext = NULL;
 726     m_pTPABinderContext = NULL;
 727
 728     // Make sure the container is set to NULL so that it gets loaded when it is used.
 729     m_pLargeHeapHandleTable = NULL;
 730
 731 #ifndef CROSSGEN_COMPILE
 732     // Note that m_handleStore is overridden by app domains
 733     m_handleStore = GCHandleUtilities::GetGCHandleManager()->GetGlobalHandleStore();
 734 #else
 735     m_handleStore = NULL;
 736 #endif
 737
 738     m_pMarshalingData = NULL;
 739
 740     m_dwContextStatics = 0;
 741 #ifdef FEATURE_COMINTEROP
 742     m_pMngStdInterfacesInfo = NULL;
 743     m_pWinRtBinder = NULL;
 744 #endif
 745     m_FileLoadLock.PreInit();
 746     m_JITLock.PreInit();
 747     m_ClassInitLock.PreInit();
 748     m_ILStubGenLock.PreInit();
 749
 750 #ifdef FEATURE_CODE_VERSIONING
 751     m_codeVersionManager.PreInit(this == (BaseDomain *)g_pSharedDomainMemory);
 752 #endif
 753
 754 } //BaseDomain::BaseDomain
 755
 756 //*****************************************************************************
 757 void BaseDomain::Init()
 758 {
 759     CONTRACTL
 760     {
 761         THROWS;
 762         GC_TRIGGERS;
 763         MODE_ANY;
 764         INJECT_FAULT(COMPlusThrowOM(););
 765     }
 766     CONTRACTL_END;
 767
 768     //
 769     // Initialize the domain locks
 770     //
 771
 772     if (this == reinterpret_cast<BaseDomain*>(&g_pSharedDomainMemory[0]))
 773         m_DomainCrst.Init(CrstSharedBaseDomain);
 774     else if (this == reinterpret_cast<BaseDomain*>(&g_pSystemDomainMemory[0]))
 775         m_DomainCrst.Init(CrstSystemBaseDomain);
 776     else
 777         m_DomainCrst.Init(CrstBaseDomain);
 778
 779     m_DomainCacheCrst.Init(CrstAppDomainCache);
 780     m_DomainLocalBlockCrst.Init(CrstDomainLocalBlock);
 781
 782     m_InteropDataCrst.Init(CrstInteropData, CRST_REENTRANCY);
 783
 784     m_WinRTFactoryCacheCrst.Init(CrstWinRTFactoryCache, CRST_UNSAFE_COOPGC);
 785
 786     // NOTE: CRST_UNSAFE_COOPGC prevents a GC mode switch to preemptive when entering this crst.
 787     // If you remove this flag, we will switch to preemptive mode when entering
 788     // m_FileLoadLock, which means all functions that enter it will become
 789     // GC_TRIGGERS.  (This includes all uses of PEFileListLockHolder, LoadLockHolder, etc.)  So be sure
 790     // to update the contracts if you remove this flag.
 791     m_FileLoadLock.Init(CrstAssemblyLoader,
 792                         CrstFlags(CRST_HOST_BREAKABLE), TRUE);
 793
 794     //
 795     //   The JIT lock and the CCtor locks are at the same level (and marked as
 796     //   UNSAFE_SAME_LEVEL) because they are all part of the same deadlock detection mechanism. We
 797     //   see through cycles of JITting and .cctor execution and then explicitly allow the cycle to
 798     //   be broken by giving access to uninitialized classes.  If there is no cycle or if the cycle
 799     //   involves other locks that arent part of this special deadlock-breaking semantics, then
 800     //   we continue to block.
 801     //
 802     m_JITLock.Init(CrstJit, CrstFlags(CRST_REENTRANCY | CRST_UNSAFE_SAMELEVEL), TRUE);
 803     m_ClassInitLock.Init(CrstClassInit, CrstFlags(CRST_REENTRANCY | CRST_UNSAFE_SAMELEVEL), TRUE);
 804
 805     m_ILStubGenLock.Init(CrstILStubGen, CrstFlags(CRST_REENTRANCY), TRUE);
 806
 807     // Large heap handle table CRST.
 808     m_LargeHeapHandleTableCrst.Init(CrstAppDomainHandleTable);
 809
 810     m_crstLoaderAllocatorReferences.Init(CrstLoaderAllocatorReferences);
 811     // Has to switch thread to GC_NOTRIGGER while being held (see code:BaseDomain#AssemblyListLock)
 812     m_crstAssemblyList.Init(CrstAssemblyList, CrstFlags(
 813         CRST_GC_NOTRIGGER_WHEN_TAKEN | CRST_DEBUGGER_THREAD | CRST_TAKEN_DURING_SHUTDOWN));
 814
 815     // Initialize the EE marshaling data to NULL.
 816     m_pMarshalingData = NULL;
 817
 818 #ifdef FEATURE_COMINTEROP
 819     // Allocate the managed standard interfaces information.
 820     m_pMngStdInterfacesInfo = new MngStdInterfacesInfo();
 821
 822     {
 823         CLRPrivBinderWinRT::NamespaceResolutionKind fNamespaceResolutionKind = CLRPrivBinderWinRT::NamespaceResolutionKind_WindowsAPI;
 824         if (CLRConfig::GetConfigValue(CLRConfig::EXTERNAL_DesignerNamespaceResolutionEnabled) != FALSE)
 825         {
 826             fNamespaceResolutionKind = CLRPrivBinderWinRT::NamespaceResolutionKind_DesignerResolveEvent;
 827         }
 828         CLRPrivTypeCacheWinRT * pWinRtTypeCache = CLRPrivTypeCacheWinRT::GetOrCreateTypeCache();
 829         m_pWinRtBinder = CLRPrivBinderWinRT::GetOrCreateBinder(pWinRtTypeCache, fNamespaceResolutionKind);
 830     }
 831 #endif // FEATURE_COMINTEROP
 832
 833     // Init the COM Interop data hash
 834     {
 835         LockOwner lock = {&m_InteropDataCrst, IsOwnerOfCrst};
 836         m_interopDataHash.Init(0, NULL, false, &lock);
 837     }
 838
 839     m_dwSizedRefHandles = 0;
 840     if (!m_iNumberOfProcessors)
 841     {
 842         m_iNumberOfProcessors = GetCurrentProcessCpuCount();
 843     }
 844 }
 845
 846 #undef LOADERHEAP_PROFILE_COUNTER
 847
 848 #ifndef CROSSGEN_COMPILE
 849 //*****************************************************************************
 850 void BaseDomain::Terminate()
 851 {
 852     CONTRACTL
 853     {
 854         NOTHROW;
 855         GC_TRIGGERS;
 856         MODE_ANY;
 857     }
 858     CONTRACTL_END;
 859
 860     m_crstLoaderAllocatorReferences.Destroy();
 861     m_DomainCrst.Destroy();
 862     m_DomainCacheCrst.Destroy();
 863     m_DomainLocalBlockCrst.Destroy();
 864     m_InteropDataCrst.Destroy();
 865
 866     JitListLockEntry* pJitElement;
 867     ListLockEntry* pElement;
 868
 869     // All the threads that are in this domain had better be stopped by this
 870     // point.
 871     //
 872     // We might be jitting or running a .cctor so we need to empty that queue.
 873     pJitElement = m_JITLock.Pop(TRUE);
 874     while (pJitElement)
 875     {
 876 #ifdef STRICT_JITLOCK_ENTRY_LEAK_DETECTION
 877         _ASSERTE ((m_JITLock.m_pHead->m_dwRefCount == 1
 878             && m_JITLock.m_pHead->m_hrResultCode == E_FAIL) ||
 879             dbg_fDrasticShutdown || g_fInControlC);
 880 #endif // STRICT_JITLOCK_ENTRY_LEAK_DETECTION
 881         delete(pJitElement);
 882         pJitElement = m_JITLock.Pop(TRUE);
 883
 884     }
 885     m_JITLock.Destroy();
 886
 887     pElement = m_ClassInitLock.Pop(TRUE);
 888     while (pElement)
 889     {
 890 #ifdef STRICT_CLSINITLOCK_ENTRY_LEAK_DETECTION
 891         _ASSERTE (dbg_fDrasticShutdown || g_fInControlC);
 892 #endif
 893         delete(pElement);
 894         pElement = m_ClassInitLock.Pop(TRUE);
 895     }
 896     m_ClassInitLock.Destroy();
 897
 898     FileLoadLock* pFileElement;
 899     pFileElement = (FileLoadLock*) m_FileLoadLock.Pop(TRUE);
 900     while (pFileElement)
 901     {
 902 #ifdef STRICT_CLSINITLOCK_ENTRY_LEAK_DETECTION
 903         _ASSERTE (dbg_fDrasticShutdown || g_fInControlC);
 904 #endif
 905         pFileElement->Release();
 906         pFileElement = (FileLoadLock*) m_FileLoadLock.Pop(TRUE);
 907     }
 908     m_FileLoadLock.Destroy();
 909
 910     pElement = m_ILStubGenLock.Pop(TRUE);
 911     while (pElement)
 912     {
 913 #ifdef STRICT_JITLOCK_ENTRY_LEAK_DETECTION
 914         _ASSERTE ((m_ILStubGenLock.m_pHead->m_dwRefCount == 1
 915             && m_ILStubGenLock.m_pHead->m_hrResultCode == E_FAIL) ||
 916             dbg_fDrasticShutdown || g_fInControlC);
 917 #endif // STRICT_JITLOCK_ENTRY_LEAK_DETECTION
 918         delete(pElement);
 919         pElement = m_ILStubGenLock.Pop(TRUE);
 920     }
 921     m_ILStubGenLock.Destroy();
 922
 923     m_LargeHeapHandleTableCrst.Destroy();
 924
 925     if (m_pLargeHeapHandleTable != NULL)
 926     {
 927         delete m_pLargeHeapHandleTable;
 928         m_pLargeHeapHandleTable = NULL;
 929     }
 930
 931     if (!IsAppDomain())
 932     {
 933         // Kind of a workaround - during unloading, we need to have an EE halt
 934         // around deleting this stuff. So it gets deleted in AppDomain::Terminate()
 935         // for those things (because there is a convenient place there.)
 936         GetLoaderAllocator()->CleanupStringLiteralMap();
 937     }
 938
 939 #ifdef FEATURE_COMINTEROP
 940     if (m_pMngStdInterfacesInfo)
 941     {
 942         delete m_pMngStdInterfacesInfo;
 943         m_pMngStdInterfacesInfo = NULL;
 944     }
 945
 946     if (m_pWinRtBinder != NULL)
 947     {
 948         m_pWinRtBinder->Release();
 949     }
 950 #endif // FEATURE_COMINTEROP
 951
 952     ClearFusionContext();
 953
 954     m_dwSizedRefHandles = 0;
 955 }
 956 #endif // CROSSGEN_COMPILE
 957
 958 void BaseDomain::InitVSD()
 959 {
 960     STANDARD_VM_CONTRACT;
 961
 962     // This is a workaround for gcc, since it fails to successfully resolve
 963     // "TypeIDMap::STARTING_SHARED_DOMAIN_ID" when used within the ?: operator.
 964     UINT32 startingId;
 965     if (IsSharedDomain())
 966     {
 967         startingId = TypeIDMap::STARTING_SHARED_DOMAIN_ID;
 968     }
 969     else
 970     {
 971         startingId = TypeIDMap::STARTING_UNSHARED_DOMAIN_ID;
 972     }
 973
 974     // By passing false as the last parameter, interfaces loaded in the
 975     // shared domain will not be given fat type ids if RequiresFatDispatchTokens
 976     // is set. This is correct, as the fat dispatch tokens are only needed to solve
 977     // uniqueness problems involving domain specific types.
 978     m_typeIDMap.Init(startingId, 2, !IsSharedDomain());
 979
 980 #ifndef CROSSGEN_COMPILE
 981     GetLoaderAllocator()->InitVirtualCallStubManager(this);
 982 #endif
 983 }
 984
 985 #ifndef CROSSGEN_COMPILE
 986
 987 DWORD BaseDomain::AllocateContextStaticsOffset(DWORD* pOffsetSlot)
 988 {
 989     CONTRACTL
 990     {
 991         THROWS;
 992         GC_TRIGGERS;
 993     }
 994     CONTRACTL_END;
 995
 996     CrstHolder ch(&m_SpecialStaticsCrst);
 997
 998     DWORD dwOffset = *pOffsetSlot;
 999
1000     if (dwOffset == (DWORD)-1)
1001     {
1002         // Allocate the slot
1003         dwOffset = m_dwContextStatics++;
1004         *pOffsetSlot = dwOffset;
1005     }
1006
1007     return dwOffset;
1008 }
1009
1010 void BaseDomain::ClearFusionContext()
1011 {
1012     CONTRACTL
1013     {
1014         NOTHROW;
1015         GC_TRIGGERS;
1016         MODE_PREEMPTIVE;
1017     }
1018     CONTRACTL_END;
1019
1020     if(m_pFusionContext) {
1021         m_pFusionContext->Release();
1022         m_pFusionContext = NULL;
1023     }
1024     if (m_pTPABinderContext) {
1025         m_pTPABinderContext->Release();
1026         m_pTPABinderContext = NULL;
1027     }
1028 }
1029
1030 #ifdef  FEATURE_PREJIT
1031 void AppDomain::DeleteNativeCodeRanges()
1032 {
1033     CONTRACTL
1034     {
1035         NOTHROW;
1036         GC_NOTRIGGER;
1037         MODE_PREEMPTIVE;
1038         FORBID_FAULT;
1039     }
1040     CONTRACTL_END;
1041
1042     // Fast path to skip using the assembly iterator when the appdomain has not yet completely been initialized
1043     // and yet we are destroying it.  (This is the case if we OOM during AppDomain creation.)
1044     if (m_Assemblies.IsEmpty())
1045         return;
1046
1047     // Shutdown assemblies
1048     AssemblyIterator i = IterateAssembliesEx( (AssemblyIterationFlags)(kIncludeLoaded | kIncludeLoading | kIncludeExecution | kIncludeIntrospection | kIncludeFailedToLoad) );
1049     CollectibleAssemblyHolder<DomainAssembly *> pDomainAssembly;
1050
1051     while (i.Next(pDomainAssembly.This()))
1052     {
1053         Assembly * assembly = pDomainAssembly->m_pAssembly;
1054         if ((assembly != NULL) && !assembly->IsDomainNeutral())
1055             assembly->DeleteNativeCodeRanges();
1056     }
1057 }
1058 #endif
1059
1060 void AppDomain::ShutdownAssemblies()
1061 {
1062     CONTRACTL
1063     {
1064         NOTHROW;
1065         GC_TRIGGERS;
1066         MODE_ANY;
1067     }
1068     CONTRACTL_END;
1069
1070     // Fast path to skip using the assembly iterator when the appdomain has not yet completely been initialized
1071     // and yet we are destroying it.  (This is the case if we OOM during AppDomain creation.)
1072     if (m_Assemblies.IsEmpty())
1073         return;
1074
1075     // Shutdown assemblies
1076     // has two stages because Terminate needs info from the Assembly's dependencies
1077
1078     // Stage 1: call code:Assembly::Terminate
1079     AssemblyIterator i = IterateAssembliesEx((AssemblyIterationFlags)(
1080         kIncludeLoaded | kIncludeLoading | kIncludeExecution | kIncludeIntrospection | kIncludeFailedToLoad | kIncludeCollected));
1081     DomainAssembly * pDomainAssembly = NULL;
1082
1083     while (i.Next_UnsafeNoAddRef(&pDomainAssembly))
1084     {
1085         // Note: cannot use DomainAssembly::GetAssembly() here as it asserts that the assembly has been
1086         // loaded to at least the FILE_LOAD_ALLOCATE level. Since domain shutdown can take place
1087         // asynchronously this property cannot be guaranteed. Access the m_pAssembly field directly instead.
1088         Assembly * assembly = pDomainAssembly->m_pAssembly;
1089         if (assembly && !assembly->IsDomainNeutral())
1090             assembly->Terminate();
1091     }
1092
1093     // Stage 2: Clear the list of assemblies
1094     i = IterateAssembliesEx((AssemblyIterationFlags)(
1095         kIncludeLoaded | kIncludeLoading | kIncludeExecution | kIncludeIntrospection | kIncludeFailedToLoad | kIncludeCollected));
1096     while (i.Next_UnsafeNoAddRef(&pDomainAssembly))
1097     {
1098         // We are in shutdown path, no one else can get to the list anymore
1099         delete pDomainAssembly;
1100     }
1101     m_Assemblies.Clear(this);
1102
1103     // Stage 2: Clear the loader allocators registered for deletion from code:Assembly:Terminate calls in
1104     // stage 1
1105     // Note: It is not clear to me why we cannot delete the loader allocator from within
1106     // code:DomainAssembly::~DomainAssembly
1107     ShutdownFreeLoaderAllocators(FALSE);
1108 } // AppDomain::ShutdownAssemblies
1109
1110 void AppDomain::ShutdownFreeLoaderAllocators(BOOL bFromManagedCode)
1111 {
1112     // If we're called from managed code (i.e. the finalizer thread) we take a lock in
1113     // LoaderAllocator::CleanupFailedTypeInit, which may throw. Otherwise we're called
1114     // from the app-domain shutdown path in which we can avoid taking the lock.
1115     CONTRACTL
1116     {
1117         GC_TRIGGERS;
1118         if (bFromManagedCode) THROWS; else NOTHROW;
1119         MODE_ANY;
1120         CAN_TAKE_LOCK;
1121     }
1122     CONTRACTL_END;
1123
1124     CrstHolder ch(GetLoaderAllocatorReferencesLock());
1125
1126     // Shutdown the LoaderAllocators associated with collectible assemblies
1127     while (m_pDelayedLoaderAllocatorUnloadList != NULL)
1128     {
1129         LoaderAllocator * pCurrentLoaderAllocator = m_pDelayedLoaderAllocatorUnloadList;
1130         // Remove next loader allocator from the list
1131         m_pDelayedLoaderAllocatorUnloadList = m_pDelayedLoaderAllocatorUnloadList->m_pLoaderAllocatorDestroyNext;
1132
1133         if (bFromManagedCode)
1134         {
1135             // For loader allocator finalization, we need to be careful about cleaning up per-appdomain allocations
1136             // and synchronizing with GC using delay unload list. We need to wait for next Gen2 GC to finish to ensure
1137             // that GC heap does not have any references to the MethodTables being unloaded.
1138
1139             pCurrentLoaderAllocator->CleanupFailedTypeInit();
1140
1141             pCurrentLoaderAllocator->CleanupHandles();
1142
1143             GCX_COOP();
1144             SystemDomain::System()->AddToDelayedUnloadList(pCurrentLoaderAllocator);
1145         }
1146         else
1147         {
1148             // For appdomain unload, delete the loader allocator right away
1149             delete pCurrentLoaderAllocator;
1150         }
1151     }
1152 } // AppDomain::ShutdownFreeLoaderAllocators
1153
1154 //---------------------------------------------------------------------------------------
1155 //
1156 // Register the loader allocator for deletion in code:AppDomain::ShutdownFreeLoaderAllocators.
1157 //
1158 void AppDomain::RegisterLoaderAllocatorForDeletion(LoaderAllocator * pLoaderAllocator)
1159 {
1160     CONTRACTL
1161     {
1162         GC_TRIGGERS;
1163         NOTHROW;
1164         MODE_ANY;
1165         CAN_TAKE_LOCK;
1166     }
1167     CONTRACTL_END;
1168
1169     CrstHolder ch(GetLoaderAllocatorReferencesLock());
1170
1171     pLoaderAllocator->m_pLoaderAllocatorDestroyNext = m_pDelayedLoaderAllocatorUnloadList;
1172     m_pDelayedLoaderAllocatorUnloadList = pLoaderAllocator;
1173 }
1174
1175 void AppDomain::ShutdownNativeDllSearchDirectories()
1176 {
1177     LIMITED_METHOD_CONTRACT;
1178     // Shutdown assemblies
1179     PathIterator i = IterateNativeDllSearchDirectories();
1180
1181     while (i.Next())
1182     {
1183         delete i.GetPath();
1184     }
1185
1186     m_NativeDllSearchDirectories.Clear();
1187 }
1188
1189 void AppDomain::ReleaseDomainBoundInfo()
1190 {
1191     CONTRACTL
1192     {
1193         NOTHROW;
1194         GC_TRIGGERS;
1195         MODE_ANY;
1196     }
1197     CONTRACTL_END;;
1198     // Shutdown assemblies
1199     m_AssemblyCache.OnAppDomainUnload();
1200
1201     AssemblyIterator i = IterateAssembliesEx( (AssemblyIterationFlags)(kIncludeFailedToLoad) );
1202     CollectibleAssemblyHolder<DomainAssembly *> pDomainAssembly;
1203
1204     while (i.Next(pDomainAssembly.This()))
1205     {
1206        pDomainAssembly->ReleaseManagedData();
1207     }
1208 }
1209
1210 void AppDomain::ReleaseFiles()
1211 {
1212     STANDARD_VM_CONTRACT;
1213
1214     // Shutdown assemblies
1215     AssemblyIterator i = IterateAssembliesEx((AssemblyIterationFlags)(
1216         kIncludeLoaded  | kIncludeExecution | kIncludeIntrospection | kIncludeFailedToLoad | kIncludeLoading));
1217     CollectibleAssemblyHolder<DomainAssembly *> pAsm;
1218
1219     while (i.Next(pAsm.This()))
1220     {
1221         if (pAsm->GetCurrentAssembly() == NULL)
1222         {
1223             // Might be domain neutral or not, but should have no live objects as it has not been
1224             // really loaded yet. Just reset it.
1225             _ASSERTE(FitsIn<DWORD>(i.GetIndex()));
1226             m_Assemblies.Set(this, static_cast<DWORD>(i.GetIndex()), NULL);
1227             delete pAsm.Extract();
1228         }
1229         else
1230         {
1231             if (!pAsm->GetCurrentAssembly()->IsDomainNeutral())
1232                 pAsm->ReleaseFiles();
1233         }
1234     }
1235 } // AppDomain::ReleaseFiles
1236
1237
1238 OBJECTREF* BaseDomain::AllocateObjRefPtrsInLargeTable(int nRequested, OBJECTREF** ppLazyAllocate, BOOL bCrossAD)
1239 {
1240     CONTRACTL
1241     {
1242         THROWS;
1243         GC_TRIGGERS;
1244         MODE_ANY;
1245         PRECONDITION((nRequested > 0));
1246         INJECT_FAULT(COMPlusThrowOM(););
1247     }
1248     CONTRACTL_END;
1249
1250     if (ppLazyAllocate && *ppLazyAllocate)
1251     {
1252         // Allocation already happened
1253         return *ppLazyAllocate;
1254     }
1255
1256     // Enter preemptive state, take the lock and go back to cooperative mode.
1257     {
1258         CrstHolder ch(&m_LargeHeapHandleTableCrst);
1259         GCX_COOP();
1260
1261         if (ppLazyAllocate && *ppLazyAllocate)
1262         {
1263             // Allocation already happened
1264             return *ppLazyAllocate;
1265         }
1266
1267         // Make sure the large heap handle table is initialized.
1268         if (!m_pLargeHeapHandleTable)
1269             InitLargeHeapHandleTable();
1270
1271         // Allocate the handles.
1272         OBJECTREF* result = m_pLargeHeapHandleTable->AllocateHandles(nRequested, bCrossAD);
1273
1274         if (ppLazyAllocate)
1275         {
1276             *ppLazyAllocate = result;
1277         }
1278
1279         return result;
1280     }
1281 }
1282 #endif // CROSSGEN_COMPILE
1283
1284 #endif // !DACCESS_COMPILE
1285
1286 /*static*/
1287 PTR_BaseDomain BaseDomain::ComputeBaseDomain(
1288     BaseDomain * pGenericDefinitionDomain,   // the domain that owns the generic type or method
1289     Instantiation classInst,                // the type arguments to the type (if any)
1290     Instantiation methodInst)               // the type arguments to the method (if any)
1291 {
1292     CONTRACT(PTR_BaseDomain)
1293     {
1294         NOTHROW;
1295         GC_NOTRIGGER;
1296         FORBID_FAULT;
1297         MODE_ANY;
1298         POSTCONDITION(CheckPointer(RETVAL));
1299         SUPPORTS_DAC;
1300         SO_TOLERANT;
1301     }
1302     CONTRACT_END
1303
1304     if (pGenericDefinitionDomain && pGenericDefinitionDomain->IsAppDomain())
1305         RETURN PTR_BaseDomain(pGenericDefinitionDomain);
1306
1307     for (DWORD i = 0; i < classInst.GetNumArgs(); i++)
1308     {
1309         PTR_BaseDomain pArgDomain = classInst[i].GetDomain();
1310         if (pArgDomain->IsAppDomain())
1311             RETURN pArgDomain;
1312     }
1313
1314     for (DWORD i = 0; i < methodInst.GetNumArgs(); i++)
1315     {
1316         PTR_BaseDomain pArgDomain = methodInst[i].GetDomain();
1317         if (pArgDomain->IsAppDomain())
1318             RETURN pArgDomain;
1319     }
1320     RETURN (pGenericDefinitionDomain ?
1321             PTR_BaseDomain(pGenericDefinitionDomain) :
1322             PTR_BaseDomain(SystemDomain::System()));
1323 }
1324
1325 PTR_BaseDomain BaseDomain::ComputeBaseDomain(TypeKey * pKey)
1326 {
1327     CONTRACTL
1328     {
1329         NOTHROW;
1330         GC_NOTRIGGER;
1331         MODE_ANY;
1332         SUPPORTS_DAC;
1333     }
1334     CONTRACTL_END;
1335
1336
1337     if (pKey->GetKind() == ELEMENT_TYPE_CLASS)
1338         return BaseDomain::ComputeBaseDomain(pKey->GetModule()->GetDomain(),
1339                                              pKey->GetInstantiation());
1340     else if (pKey->GetKind() != ELEMENT_TYPE_FNPTR)
1341         return pKey->GetElementType().GetDomain();
1342     else
1343         return BaseDomain::ComputeBaseDomain(NULL,Instantiation(pKey->GetRetAndArgTypes(), pKey->GetNumArgs()+1));
1344 }
1345
1346
1347
1348
1349
1350 #ifndef DACCESS_COMPILE
1351
1352 // Insert class in the hash table
1353 void AppDomain::InsertClassForCLSID(MethodTable* pMT, BOOL fForceInsert /*=FALSE*/)
1354 {
1355     CONTRACTL
1356     {
1357         GC_TRIGGERS;
1358         MODE_ANY;
1359         THROWS;
1360         INJECT_FAULT(COMPlusThrowOM(););
1361     }
1362     CONTRACTL_END;
1363
1364     CVID cvid;
1365
1366     // Ensure that registered classes are activated for allocation
1367     pMT->EnsureInstanceActive();
1368
1369     // Note that it is possible for multiple classes to claim the same CLSID, and in such a
1370     // case it is arbitrary which one we will return for a future query for a given app domain.
1371
1372     pMT->GetGuid(&cvid, fForceInsert);
1373
1374     if (!IsEqualIID(cvid, GUID_NULL))
1375     {
1376         //<TODO>@todo get a better key</TODO>
1377         LPVOID val = (LPVOID)pMT;
1378         {
1379             LockHolder lh(this);
1380
1381             if (LookupClass(cvid) != pMT)
1382             {
1383                 m_clsidHash.InsertValue(GetKeyFromGUID(&cvid), val);
1384             }
1385         }
1386     }
1387 }
1388
1389 void AppDomain::InsertClassForCLSID(MethodTable* pMT, GUID *pGuid)
1390 {
1391     CONTRACT_VOID
1392     {
1393         NOTHROW;
1394         PRECONDITION(CheckPointer(pMT));
1395         PRECONDITION(CheckPointer(pGuid));
1396     }
1397     CONTRACT_END;
1398
1399     LPVOID val = (LPVOID)pMT;
1400     {
1401         LockHolder lh(this);
1402
1403         CVID* cvid = pGuid;
1404         if (LookupClass(*cvid) != pMT)
1405         {
1406             m_clsidHash.InsertValue(GetKeyFromGUID(pGuid), val);
1407         }
1408     }
1409
1410     RETURN;
1411 }
1412 #endif // DACCESS_COMPILE
1413
1414 #ifdef FEATURE_COMINTEROP
1415
1416 #ifndef DACCESS_COMPILE
1417 void AppDomain::CacheTypeByName(const SString &ssClassName, const UINT vCacheVersion, TypeHandle typeHandle, BYTE bFlags, BOOL bReplaceExisting /*= FALSE*/)
1418 {
1419     WRAPPER_NO_CONTRACT;
1420     LockHolder lh(this);
1421     CacheTypeByNameWorker(ssClassName, vCacheVersion, typeHandle, bFlags, bReplaceExisting);
1422 }
1423
1424 void AppDomain::CacheTypeByNameWorker(const SString &ssClassName, const UINT vCacheVersion, TypeHandle typeHandle, BYTE bFlags, BOOL bReplaceExisting /*= FALSE*/)
1425 {
1426     CONTRACTL
1427     {
1428         THROWS;
1429         GC_TRIGGERS;
1430         PRECONDITION(!typeHandle.IsNull());
1431     }
1432     CONTRACTL_END;
1433
1434     NewArrayHolder<WCHAR> wzClassName(DuplicateStringThrowing(ssClassName.GetUnicode()));
1435
1436     if (m_vNameToTypeMapVersion != vCacheVersion)
1437         return;
1438
1439     if (m_pNameToTypeMap == nullptr)
1440     {
1441         m_pNameToTypeMap = new NameToTypeMapTable();
1442     }
1443
1444     NameToTypeMapEntry e;
1445     e.m_key.m_wzName = wzClassName;
1446     e.m_key.m_cchName = ssClassName.GetCount();
1447     e.m_typeHandle = typeHandle;
1448     e.m_nEpoch = this->m_nEpoch;
1449     e.m_bFlags = bFlags;
1450     if (!bReplaceExisting)
1451         m_pNameToTypeMap->Add(e);
1452     else
1453         m_pNameToTypeMap->AddOrReplace(e);
1454
1455     wzClassName.SuppressRelease();
1456 }
1457 #endif // DACCESS_COMPILE
1458
1459 TypeHandle AppDomain::LookupTypeByName(const SString &ssClassName, UINT* pvCacheVersion, BYTE *pbFlags)
1460 {
1461     WRAPPER_NO_CONTRACT;
1462     LockHolder lh(this);
1463     return LookupTypeByNameWorker(ssClassName, pvCacheVersion, pbFlags);
1464 }
1465
1466 TypeHandle AppDomain::LookupTypeByNameWorker(const SString &ssClassName, UINT* pvCacheVersion, BYTE *pbFlags)
1467 {
1468     CONTRACTL
1469     {
1470         THROWS;
1471         GC_TRIGGERS;
1472         SUPPORTS_DAC;
1473         PRECONDITION(CheckPointer(pbFlags, NULL_OK));
1474     }
1475     CONTRACTL_END;
1476
1477     *pvCacheVersion = m_vNameToTypeMapVersion;
1478
1479     if (m_pNameToTypeMap == nullptr)
1480         return TypeHandle();  // a null TypeHandle
1481
1482     NameToTypeMapEntry::Key key;
1483     key.m_cchName = ssClassName.GetCount();
1484     key.m_wzName  = ssClassName.GetUnicode();
1485
1486     const NameToTypeMapEntry * pEntry = m_pNameToTypeMap->LookupPtr(key);
1487     if (pEntry == NULL)
1488         return TypeHandle();  // a null TypeHandle
1489
1490     if (pbFlags != NULL)
1491         *pbFlags = pEntry->m_bFlags;
1492
1493     return pEntry->m_typeHandle;
1494 }
1495
1496 PTR_MethodTable AppDomain::LookupTypeByGuid(const GUID & guid)
1497 {
1498     CONTRACTL
1499     {
1500         THROWS;
1501         GC_TRIGGERS;
1502         MODE_ANY;
1503         SUPPORTS_DAC;
1504     }
1505     CONTRACTL_END;
1506
1507     SString sGuid;
1508     {
1509         WCHAR wszGuid[64];
1510         GuidToLPWSTR(guid, wszGuid, _countof(wszGuid));
1511         sGuid.Append(wszGuid);
1512     }
1513     UINT ver;
1514     TypeHandle th = LookupTypeByName(sGuid, &ver, NULL);
1515
1516     if (!th.IsNull())
1517     {
1518         _ASSERTE(!th.IsTypeDesc());
1519         return th.AsMethodTable();
1520     }
1521
1522 #ifdef FEATURE_PREJIT
1523     else
1524     {
1525         // Next look in each ngen'ed image in turn
1526         AssemblyIterator assemblyIterator = IterateAssembliesEx((AssemblyIterationFlags)(
1527             kIncludeLoaded | kIncludeExecution));
1528         CollectibleAssemblyHolder<DomainAssembly *> pDomainAssembly;
1529         while (assemblyIterator.Next(pDomainAssembly.This()))
1530         {
1531             CollectibleAssemblyHolder<Assembly *> pAssembly = pDomainAssembly->GetLoadedAssembly();
1532
1533             DomainAssembly::ModuleIterator i = pDomainAssembly->IterateModules(kModIterIncludeLoaded);
1534             while (i.Next())
1535             {
1536                 Module * pModule = i.GetLoadedModule();
1537                 if (!pModule->HasNativeImage())
1538                     continue;
1539                 _ASSERTE(!pModule->IsCollectible());
1540                 PTR_MethodTable pMT = pModule->LookupTypeByGuid(guid);
1541                 if (pMT != NULL)
1542                 {
1543                     return pMT;
1544                 }
1545             }
1546         }
1547     }
1548 #endif // FEATURE_PREJIT
1549     return NULL;
1550 }
1551
1552 #ifndef DACCESS_COMPILE
1553 void AppDomain::CacheWinRTTypeByGuid(TypeHandle typeHandle)
1554 {
1555     CONTRACTL
1556     {
1557         THROWS;
1558         GC_TRIGGERS;
1559         MODE_ANY;
1560         PRECONDITION(!typeHandle.IsTypeDesc());
1561         PRECONDITION(CanCacheWinRTTypeByGuid(typeHandle));
1562     }
1563     CONTRACTL_END;
1564
1565     PTR_MethodTable pMT = typeHandle.AsMethodTable();
1566
1567     GUID guid;
1568     if (pMT->GetGuidForWinRT(&guid))
1569     {
1570         SString sGuid;
1571
1572         {
1573             WCHAR wszGuid[64];
1574             GuidToLPWSTR(guid, wszGuid, _countof(wszGuid));
1575             sGuid.Append(wszGuid);
1576         }
1577
1578         BYTE bFlags = 0x80;
1579         TypeHandle th;
1580         UINT vCacheVersion;
1581         {
1582             LockHolder lh(this);
1583             th = LookupTypeByNameWorker(sGuid, &vCacheVersion, &bFlags);
1584
1585             if (th.IsNull())
1586             {
1587                 // no other entry with the same GUID exists in the cache
1588                 CacheTypeByNameWorker(sGuid, vCacheVersion, typeHandle, bFlags);
1589             }
1590             else if (typeHandle.AsMethodTable() != th.AsMethodTable() && th.IsProjectedFromWinRT())
1591             {
1592                 // If we found a native WinRT type cached with the same GUID, replace it.
1593                 // Otherwise simply add the new mapping to the cache.
1594                 CacheTypeByNameWorker(sGuid, vCacheVersion, typeHandle, bFlags, TRUE);
1595             }
1596         }
1597     }
1598 }
1599 #endif // DACCESS_COMPILE
1600
1601 void AppDomain::GetCachedWinRTTypes(
1602                         SArray<PTR_MethodTable> * pTypes,
1603                         SArray<GUID> * pGuids,
1604                         UINT minEpoch,
1605                         UINT * pCurEpoch)
1606 {
1607     CONTRACTL
1608     {
1609         THROWS;
1610         GC_TRIGGERS;
1611         MODE_ANY;
1612         SUPPORTS_DAC;
1613     }
1614     CONTRACTL_END;
1615
1616     LockHolder lh(this);
1617
1618     for (auto it = m_pNameToTypeMap->Begin(), end = m_pNameToTypeMap->End();
1619             it != end;
1620             ++it)
1621     {
1622         NameToTypeMapEntry entry = (NameToTypeMapEntry)(*it);
1623         TypeHandle th = entry.m_typeHandle;
1624         if (th.AsMethodTable() != NULL &&
1625             entry.m_key.m_wzName[0] == W('{') &&
1626             entry.m_nEpoch >= minEpoch)
1627         {
1628             _ASSERTE(!th.IsTypeDesc());
1629             PTR_MethodTable pMT = th.AsMethodTable();
1630             // we're parsing the GUID value from the cache, because projected types do not cache the
1631             // COM GUID in their GetGuid() but rather the legacy GUID
1632             GUID iid;
1633             if (LPWSTRToGuid(&iid, entry.m_key.m_wzName, 38) && iid != GUID_NULL)
1634             {
1635                 pTypes->Append(pMT);
1636                 pGuids->Append(iid);
1637             }
1638         }
1639     }
1640
1641 #ifdef FEATURE_PREJIT
1642     // Next look in each ngen'ed image in turn
1643     AssemblyIterator assemblyIterator = IterateAssembliesEx((AssemblyIterationFlags)(
1644         kIncludeLoaded | kIncludeExecution));
1645     CollectibleAssemblyHolder<DomainAssembly *> pDomainAssembly;
1646     while (assemblyIterator.Next(pDomainAssembly.This()))
1647     {
1648         CollectibleAssemblyHolder<Assembly *> pAssembly = pDomainAssembly->GetLoadedAssembly();
1649
1650         DomainAssembly::ModuleIterator i = pDomainAssembly->IterateModules(kModIterIncludeLoaded);
1651         while (i.Next())
1652         {
1653             Module * pModule = i.GetLoadedModule();
1654             if (!pModule->HasNativeImage())
1655                 continue;
1656             _ASSERTE(!pModule->IsCollectible());
1657
1658             pModule->GetCachedWinRTTypes(pTypes, pGuids);
1659         }
1660     }
1661 #endif // FEATURE_PREJIT
1662
1663     if (pCurEpoch != NULL)
1664         *pCurEpoch = m_nEpoch;
1665     ++m_nEpoch;
1666 }
1667
1668 #ifndef CROSSGEN_COMPILE
1669 #ifndef DACCESS_COMPILE
1670 // static
1671 void WinRTFactoryCacheTraits::OnDestructPerEntryCleanupAction(const WinRTFactoryCacheEntry& e)
1672 {
1673     WRAPPER_NO_CONTRACT;
1674     if (e.m_pCtxEntry != NULL)
1675     {
1676         e.m_pCtxEntry->Release();
1677     }
1678     // the AD is going away, no need to destroy the OBJECTHANDLE
1679 }
1680
1681 void AppDomain::CacheWinRTFactoryObject(MethodTable *pClassMT, OBJECTREF *refFactory, LPVOID lpCtxCookie)
1682 {
1683     CONTRACTL
1684     {
1685         THROWS;
1686         GC_TRIGGERS;
1687         MODE_COOPERATIVE;
1688         PRECONDITION(CheckPointer(pClassMT));
1689     }
1690     CONTRACTL_END;
1691
1692     CtxEntryHolder pNewCtxEntry;
1693     if (lpCtxCookie != NULL)
1694     {
1695         // We don't want to insert the context cookie in the cache because it's just an address
1696         // of an internal COM data structure which will be freed when the apartment is torn down.
1697         // What's worse, if another apartment is later created, its context cookie may have exactly
1698         // the same value leading to incorrect cache hits. We'll use our CtxEntry instead which
1699         // is ref-counted and keeps the COM data structure alive even after the apartment ceases
1700         // to exist.
1701         pNewCtxEntry = CtxEntryCache::GetCtxEntryCache()->FindCtxEntry(lpCtxCookie, GetThread());
1702     }
1703
1704     WinRTFactoryCacheLockHolder lh(this);
1705
1706     if (m_pWinRTFactoryCache == nullptr)
1707     {
1708         m_pWinRTFactoryCache = new WinRTFactoryCache();
1709     }
1710
1711     WinRTFactoryCacheEntry *pEntry = const_cast<WinRTFactoryCacheEntry*>(m_pWinRTFactoryCache->LookupPtr(pClassMT));
1712     if (!pEntry)
1713     {
1714         //
1715         // No existing entry for this cache
1716         // Create a new one
1717         //
1718         WinRTFactoryCacheEntry e;
1719
1720         OBJECTHANDLEHolder ohNewHandle(CreateHandle(*refFactory));
1721
1722         e.key               = pClassMT;
1723         e.m_pCtxEntry       = pNewCtxEntry;
1724         e.m_ohFactoryObject = ohNewHandle;
1725
1726         m_pWinRTFactoryCache->Add(e);
1727
1728         // suppress release of the CtxEntry and handle after we successfully inserted the new entry
1729         pNewCtxEntry.SuppressRelease();
1730         ohNewHandle.SuppressRelease();
1731     }
1732     else
1733     {
1734         //
1735         // Existing entry
1736         //
1737         // release the old CtxEntry and update the entry
1738         CtxEntry *pTemp = pNewCtxEntry.Extract();
1739         pNewCtxEntry = pEntry->m_pCtxEntry;
1740         pEntry->m_pCtxEntry = pTemp;
1741
1742         IGCHandleManager *mgr = GCHandleUtilities::GetGCHandleManager();
1743         mgr->StoreObjectInHandle(pEntry->m_ohFactoryObject, OBJECTREFToObject(*refFactory));
1744     }
1745 }
1746
1747 OBJECTREF AppDomain::LookupWinRTFactoryObject(MethodTable *pClassMT, LPVOID lpCtxCookie)
1748 {
1749     CONTRACTL
1750     {
1751         THROWS;
1752         GC_NOTRIGGER;
1753         MODE_COOPERATIVE;
1754         PRECONDITION(CheckPointer(pClassMT));
1755         PRECONDITION(CheckPointer(m_pWinRTFactoryCache, NULL_OK));
1756     }
1757     CONTRACTL_END;
1758
1759
1760     if (m_pWinRTFactoryCache == nullptr)
1761         return NULL;
1762
1763     //
1764     // Retrieve cached factory
1765     //
1766     WinRTFactoryCacheLockHolder lh(this);
1767
1768     const WinRTFactoryCacheEntry *pEntry = m_pWinRTFactoryCache->LookupPtr(pClassMT);
1769     if (pEntry == NULL)
1770         return NULL;
1771
1772     //
1773     // Ignore factories from a different context, unless lpCtxCookie == NULL,
1774     // which means the factory is free-threaded
1775     // Note that we cannot touch the RCW to retrieve cookie at this point
1776     // because the RCW might belong to a STA thread and that STA thread might die
1777     // and take the RCW with it. Therefore we have to save cookie in this cache
1778     //
1779     if (pEntry->m_pCtxEntry == NULL || pEntry->m_pCtxEntry->GetCtxCookie() == lpCtxCookie)
1780         return ObjectFromHandle(pEntry->m_ohFactoryObject);
1781
1782     return NULL;
1783 }
1784
1785 void AppDomain::RemoveWinRTFactoryObjects(LPVOID pCtxCookie)
1786 {
1787     CONTRACTL
1788     {
1789         THROWS;
1790         GC_TRIGGERS;
1791         MODE_ANY;
1792     }
1793     CONTRACTL_END;
1794
1795     if (m_pWinRTFactoryCache == nullptr)
1796         return;
1797
1798     // helper class for delayed CtxEntry cleanup
1799     class CtxEntryListReleaseHolder
1800     {
1801     public:
1802         CQuickArrayList<CtxEntry *> m_list;
1803
1804         ~CtxEntryListReleaseHolder()
1805         {
1806             CONTRACTL
1807             {
1808                 NOTHROW;
1809                 GC_TRIGGERS;
1810                 MODE_ANY;
1811             }
1812             CONTRACTL_END;
1813
1814             for (SIZE_T i = 0; i < m_list.Size(); i++)
1815             {
1816                 m_list[i]->Release();
1817             }
1818         }
1819     } ctxEntryListReleaseHolder;
1820
1821     GCX_COOP();
1822     {
1823         WinRTFactoryCacheLockHolder lh(this);
1824
1825         // Go through the hash table and remove items in the given context
1826         for (WinRTFactoryCache::Iterator it = m_pWinRTFactoryCache->Begin(); it != m_pWinRTFactoryCache->End(); it++)
1827         {
1828             if (it->m_pCtxEntry != NULL && it->m_pCtxEntry->GetCtxCookie() == pCtxCookie)
1829             {
1830                 // Releasing the CtxEntry may trigger GC which we can't do under the lock so we push
1831                 // it on our local list and release them all after we're done iterating the hashtable.
1832                 ctxEntryListReleaseHolder.m_list.Push(it->m_pCtxEntry);
1833
1834                 DestroyHandle(it->m_ohFactoryObject);
1835                 m_pWinRTFactoryCache->Remove(it);
1836             }
1837         }
1838     }
1839 }
1840
1841 OBJECTREF AppDomain::GetMissingObject()
1842 {
1843     CONTRACTL
1844     {
1845         THROWS;
1846         GC_TRIGGERS;
1847         MODE_COOPERATIVE;
1848     }
1849     CONTRACTL_END;
1850
1851     if (!m_hndMissing)
1852     {
1853         // Get the field
1854         FieldDesc *pValueFD = MscorlibBinder::GetField(FIELD__MISSING__VALUE);
1855
1856         pValueFD->CheckRunClassInitThrowing();
1857
1858         // Retrieve the value static field and store it.
1859         OBJECTHANDLE hndMissing = CreateHandle(pValueFD->GetStaticOBJECTREF());
1860
1861         if (FastInterlockCompareExchangePointer(&m_hndMissing, hndMissing, NULL) != NULL)
1862         {
1863             // Exchanged failed. The m_hndMissing did not equal NULL and was returned.
1864             DestroyHandle(hndMissing);
1865         }
1866     }
1867
1868     return ObjectFromHandle(m_hndMissing);
1869 }
1870
1871 #endif // DACCESS_COMPILE
1872 #endif //CROSSGEN_COMPILE
1873 #endif // FEATURE_COMINTEROP
1874
1875 #ifndef DACCESS_COMPILE
1876
1877 EEMarshalingData *BaseDomain::GetMarshalingData()
1878 {
1879     CONTRACT (EEMarshalingData*)
1880     {
1881         THROWS;
1882         GC_TRIGGERS;
1883         MODE_ANY;
1884         INJECT_FAULT(COMPlusThrowOM());
1885         POSTCONDITION(CheckPointer(m_pMarshalingData));
1886     }
1887     CONTRACT_END;
1888
1889     if (!m_pMarshalingData)
1890     {
1891         // Take the lock
1892         CrstHolder holder(&m_InteropDataCrst);
1893
1894         if (!m_pMarshalingData)
1895         {
1896             LoaderHeap* pHeap = GetLoaderAllocator()->GetLowFrequencyHeap();
1897             m_pMarshalingData = new (pHeap) EEMarshalingData(this, pHeap, &m_DomainCrst);
1898         }
1899     }
1900
1901     RETURN m_pMarshalingData;
1902 }
1903
1904 void BaseDomain::DeleteMarshalingData()
1905 {
1906     CONTRACTL
1907     {
1908         NOTHROW;
1909         GC_TRIGGERS;
1910         MODE_ANY;
1911     }
1912     CONTRACTL_END;
1913
1914     // We are in shutdown - no need to take any lock
1915     if (m_pMarshalingData)
1916     {
1917         delete m_pMarshalingData;
1918         m_pMarshalingData = NULL;
1919     }
1920 }
1921
1922 #ifndef CROSSGEN_COMPILE
1923
1924 STRINGREF *BaseDomain::IsStringInterned(STRINGREF *pString)
1925 {
1926     CONTRACTL
1927     {
1928         GC_TRIGGERS;
1929         THROWS;
1930         MODE_COOPERATIVE;
1931         PRECONDITION(CheckPointer(pString));
1932         INJECT_FAULT(COMPlusThrowOM(););
1933     }
1934     CONTRACTL_END;
1935
1936     return GetLoaderAllocator()->IsStringInterned(pString);
1937 }
1938
1939 STRINGREF *BaseDomain::GetOrInternString(STRINGREF *pString)
1940 {
1941     CONTRACTL
1942     {
1943         GC_TRIGGERS;
1944         THROWS;
1945         MODE_COOPERATIVE;
1946         PRECONDITION(CheckPointer(pString));
1947         INJECT_FAULT(COMPlusThrowOM(););
1948     }
1949     CONTRACTL_END;
1950
1951     return GetLoaderAllocator()->GetOrInternString(pString);
1952 }
1953
1954 void BaseDomain::InitLargeHeapHandleTable()
1955 {
1956     CONTRACTL
1957     {
1958         THROWS;
1959         GC_TRIGGERS;
1960         MODE_ANY;
1961         PRECONDITION(m_pLargeHeapHandleTable==NULL);
1962         INJECT_FAULT(COMPlusThrowOM(););
1963     }
1964     CONTRACTL_END;
1965
1966     m_pLargeHeapHandleTable = new LargeHeapHandleTable(this, STATIC_OBJECT_TABLE_BUCKET_SIZE);
1967
1968 #ifdef _DEBUG
1969     m_pLargeHeapHandleTable->RegisterCrstDebug(&m_LargeHeapHandleTableCrst);
1970 #endif
1971 }
1972
1973 #ifdef FEATURE_COMINTEROP
1974 MethodTable* AppDomain::GetLicenseInteropHelperMethodTable()
1975 {
1976     CONTRACTL
1977     {
1978         THROWS;
1979         GC_TRIGGERS;
1980     }
1981     CONTRACTL_END;
1982
1983     if(m_pLicenseInteropHelperMT == NULL)
1984     {
1985         // Do this work outside of the lock so we don't have an unbreakable lock condition
1986
1987         TypeHandle licenseMgrTypeHnd;
1988         MethodDescCallSite  loadLM(METHOD__MARSHAL__LOAD_LICENSE_MANAGER);
1989
1990         licenseMgrTypeHnd = (MethodTable*) loadLM.Call_RetLPVOID((ARG_SLOT*)NULL);
1991
1992         //
1993         // Look up this method by name, because the type is actually declared in System.dll.  <TODO>@todo: why?</TODO>
1994         //
1995
1996         MethodDesc *pGetLIHMD = MemberLoader::FindMethod(licenseMgrTypeHnd.AsMethodTable(),
1997                 "GetLicenseInteropHelperType", &gsig_SM_Void_RetIntPtr);
1998         _ASSERTE(pGetLIHMD);
1999
2000         TypeHandle lihTypeHnd;
2001
2002         MethodDescCallSite getLIH(pGetLIHMD);
2003         lihTypeHnd = (MethodTable*) getLIH.Call_RetLPVOID((ARG_SLOT*)NULL);
2004
2005         BaseDomain::LockHolder lh(this);
2006
2007         if(m_pLicenseInteropHelperMT == NULL)
2008             m_pLicenseInteropHelperMT = lihTypeHnd.AsMethodTable();
2009     }
2010     return m_pLicenseInteropHelperMT;
2011 }
2012
2013 COMorRemotingFlag AppDomain::GetComOrRemotingFlag()
2014 {
2015     CONTRACTL
2016     {
2017         NOTHROW;
2018         GC_TRIGGERS;
2019         MODE_ANY;
2020     }
2021     CONTRACTL_END;
2022
2023     // 0. check if the value is already been set
2024     if (m_COMorRemotingFlag != COMorRemoting_NotInitialized)
2025         return m_COMorRemotingFlag;
2026
2027     // 1. check whether the process is AppX
2028     if (AppX::IsAppXProcess())
2029     {
2030         // do not use Remoting in AppX
2031         m_COMorRemotingFlag = COMorRemoting_COM;
2032         return m_COMorRemotingFlag;
2033     }
2034
2035     // 2. check the xml file
2036     m_COMorRemotingFlag = GetPreferComInsteadOfManagedRemotingFromConfigFile();
2037     if (m_COMorRemotingFlag != COMorRemoting_NotInitialized)
2038     {
2039         return m_COMorRemotingFlag;
2040     }
2041
2042     // 3. check the global setting
2043     if (NULL != g_pConfig && g_pConfig->ComInsteadOfManagedRemoting())
2044     {
2045         m_COMorRemotingFlag = COMorRemoting_COM;
2046     }
2047     else
2048     {
2049         m_COMorRemotingFlag = COMorRemoting_Remoting;
2050     }
2051
2052     return m_COMorRemotingFlag;
2053 }
2054
2055 BOOL AppDomain::GetPreferComInsteadOfManagedRemoting()
2056 {
2057     WRAPPER_NO_CONTRACT;
2058
2059     return (GetComOrRemotingFlag() == COMorRemoting_COM);
2060 }
2061
2062 COMorRemotingFlag AppDomain::GetPreferComInsteadOfManagedRemotingFromConfigFile()
2063 {
2064     CONTRACTL
2065     {
2066         NOTHROW;
2067         GC_TRIGGERS;
2068         MODE_ANY;
2069     }
2070     CONTRACTL_END;
2071
2072     return COMorRemoting_COM;
2073 }
2074 #endif // FEATURE_COMINTEROP
2075
2076 #endif // CROSSGEN_COMPILE
2077
2078 //*****************************************************************************
2079 //*****************************************************************************
2080 //*****************************************************************************
2081
2082 void *SystemDomain::operator new(size_t size, void *pInPlace)
2083 {
2084     LIMITED_METHOD_CONTRACT;
2085     return pInPlace;
2086 }
2087
2088
2089 void SystemDomain::operator delete(void *pMem)
2090 {
2091     LIMITED_METHOD_CONTRACT;
2092     // Do nothing - new() was in-place
2093 }
2094
2095
2096 void    SystemDomain::SetCompilationOverrides(BOOL fForceDebug,
2097                                               BOOL fForceProfiling,
2098                                               BOOL fForceInstrument)
2099 {
2100     LIMITED_METHOD_CONTRACT;
2101     s_fForceDebug = fForceDebug;
2102     s_fForceProfiling = fForceProfiling;
2103     s_fForceInstrument = fForceInstrument;
2104 }
2105
2106 #endif //!DACCESS_COMPILE
2107
2108 void    SystemDomain::GetCompilationOverrides(BOOL * fForceDebug,
2109                                               BOOL * fForceProfiling,
2110                                               BOOL * fForceInstrument)
2111 {
2112     LIMITED_METHOD_DAC_CONTRACT;
2113     *fForceDebug = s_fForceDebug;
2114     *fForceProfiling = s_fForceProfiling;
2115     *fForceInstrument = s_fForceInstrument;
2116 }
2117
2118 #ifndef DACCESS_COMPILE
2119
2120 void SystemDomain::Attach()
2121 {
2122     CONTRACTL
2123     {
2124         THROWS;
2125         GC_TRIGGERS;
2126         MODE_ANY;
2127         PRECONDITION(m_pSystemDomain == NULL);
2128         INJECT_FAULT(COMPlusThrowOM(););
2129     }
2130     CONTRACTL_END;
2131
2132 #ifndef CROSSGEN_COMPILE
2133     // Initialize stub managers
2134     PrecodeStubManager::Init();
2135     DelegateInvokeStubManager::Init();
2136     JumpStubStubManager::Init();
2137     RangeSectionStubManager::Init();
2138     ILStubManager::Init();
2139     InteropDispatchStubManager::Init();
2140     StubLinkStubManager::Init();
2141
2142     ThunkHeapStubManager::Init();
2143
2144     TailCallStubManager::Init();
2145
2146     PerAppDomainTPCountList::InitAppDomainIndexList();
2147 #endif // CROSSGEN_COMPILE
2148
2149     m_appDomainIndexList.Init();
2150     m_appDomainIdList.Init();
2151
2152     m_SystemDomainCrst.Init(CrstSystemDomain, (CrstFlags)(CRST_REENTRANCY | CRST_TAKEN_DURING_SHUTDOWN));
2153     m_DelayedUnloadCrst.Init(CrstSystemDomainDelayedUnloadList, CRST_UNSAFE_COOPGC);
2154
2155     // Initialize the ID dispenser that is used for domain neutral module IDs
2156     g_pModuleIndexDispenser = new IdDispenser();
2157
2158     // Create the global SystemDomain and initialize it.
2159     m_pSystemDomain = new (&g_pSystemDomainMemory[0]) SystemDomain();
2160     // No way it can fail since g_pSystemDomainMemory is a static array.
2161     CONSISTENCY_CHECK(CheckPointer(m_pSystemDomain));
2162
2163     LOG((LF_CLASSLOADER,
2164          LL_INFO10,
2165          "Created system domain at %p\n",
2166          m_pSystemDomain));
2167
2168     // We need to initialize the memory pools etc. for the system domain.
2169     m_pSystemDomain->BaseDomain::Init(); // Setup the memory heaps
2170
2171     // Create the default domain
2172     m_pSystemDomain->CreateDefaultDomain();
2173     SharedDomain::Attach();
2174
2175     // Each domain gets its own ReJitManager, and ReJitManager has its own static
2176     // initialization to run
2177     ReJitManager::InitStatic();
2178 }
2179
2180 #ifndef CROSSGEN_COMPILE
2181
2182 void SystemDomain::DetachBegin()
2183 {
2184     WRAPPER_NO_CONTRACT;
2185     // Shut down the domain and its children (but don't deallocate anything just
2186     // yet).
2187
2188     // TODO: we should really not running managed DLLMain during process detach.
2189     if (GetThread() == NULL)
2190     {
2191         return;
2192     }
2193
2194     if(m_pSystemDomain)
2195         m_pSystemDomain->Stop();
2196 }
2197
2198 void SystemDomain::DetachEnd()
2199 {
2200     CONTRACTL
2201     {
2202         NOTHROW;
2203         GC_TRIGGERS;
2204         MODE_ANY;
2205     }
2206     CONTRACTL_END;
2207     // Shut down the domain and its children (but don't deallocate anything just
2208     // yet).
2209     if(m_pSystemDomain)
2210     {
2211         GCX_PREEMP();
2212         m_pSystemDomain->ClearFusionContext();
2213         if (m_pSystemDomain->m_pDefaultDomain)
2214             m_pSystemDomain->m_pDefaultDomain->ClearFusionContext();
2215     }
2216 }
2217
2218 void SystemDomain::Stop()
2219 {
2220     WRAPPER_NO_CONTRACT;
2221     AppDomainIterator i(TRUE);
2222
2223     while (i.Next())
2224         if (i.GetDomain()->m_Stage < AppDomain::STAGE_CLEARED)
2225             i.GetDomain()->Stop();
2226 }
2227
2228
2229 void SystemDomain::Terminate() // bNotifyProfiler is ignored
2230 {
2231     CONTRACTL
2232     {
2233         NOTHROW;
2234         GC_TRIGGERS;
2235         MODE_ANY;
2236     }
2237     CONTRACTL_END;
2238
2239     // This ignores the refences and terminates the appdomains
2240     AppDomainIterator i(FALSE);
2241
2242     while (i.Next())
2243     {
2244         delete i.GetDomain();
2245         // Keep the iterator from Releasing the current domain
2246         i.m_pCurrent = NULL;
2247     }
2248
2249     if (m_pSystemFile != NULL) {
2250         m_pSystemFile->Release();
2251         m_pSystemFile = NULL;
2252     }
2253
2254     m_pSystemAssembly = NULL;
2255
2256     if(m_pwDevpath) {
2257         delete[] m_pwDevpath;
2258         m_pwDevpath = NULL;
2259     }
2260     m_dwDevpath = 0;
2261     m_fDevpath = FALSE;
2262
2263     if (m_pGlobalStringLiteralMap) {
2264         delete m_pGlobalStringLiteralMap;
2265         m_pGlobalStringLiteralMap = NULL;
2266     }
2267
2268
2269     SharedDomain::Detach();
2270
2271     BaseDomain::Terminate();
2272
2273 #ifdef FEATURE_COMINTEROP
2274     if (g_pRCWCleanupList != NULL)
2275         delete g_pRCWCleanupList;
2276 #endif // FEATURE_COMINTEROP
2277     m_GlobalAllocator.Terminate();
2278 }
2279
2280
2281 void SystemDomain::PreallocateSpecialObjects()
2282 {
2283     CONTRACTL
2284     {
2285         THROWS;
2286         GC_TRIGGERS;
2287         MODE_COOPERATIVE;
2288         INJECT_FAULT(COMPlusThrowOM(););
2289     }
2290     CONTRACTL_END;
2291
2292     _ASSERTE(g_pPreallocatedSentinelObject == NULL);
2293
2294     OBJECTREF pPreallocatedSentinalObject = AllocateObject(g_pObjectClass);
2295 #if CHECK_APP_DOMAIN_LEAKS
2296     pPreallocatedSentinalObject->SetSyncBlockAppDomainAgile();
2297 #endif
2298     g_pPreallocatedSentinelObject = CreatePinningHandle( pPreallocatedSentinalObject );
2299
2300 #ifdef FEATURE_PREJIT
2301     if (SystemModule()->HasNativeImage())
2302     {
2303         CORCOMPILE_EE_INFO_TABLE *pEEInfo = SystemModule()->GetNativeImage()->GetNativeEEInfoTable();
2304         pEEInfo->emptyString = (CORINFO_Object **)StringObject::GetEmptyStringRefPtr();
2305     }
2306 #endif
2307 }
2308
2309 void SystemDomain::CreatePreallocatedExceptions()
2310 {
2311     CONTRACTL
2312     {
2313         THROWS;
2314         GC_TRIGGERS;
2315         MODE_COOPERATIVE;
2316         INJECT_FAULT(COMPlusThrowOM(););
2317     }
2318     CONTRACTL_END;
2319
2320     EXCEPTIONREF pBaseException = (EXCEPTIONREF)AllocateObject(g_pExceptionClass);
2321     pBaseException->SetHResult(COR_E_EXCEPTION);
2322     pBaseException->SetXCode(EXCEPTION_COMPLUS);
2323     _ASSERTE(g_pPreallocatedBaseException == NULL);
2324     g_pPreallocatedBaseException = CreateHandle(pBaseException);
2325
2326
2327     EXCEPTIONREF pOutOfMemory = (EXCEPTIONREF)AllocateObject(g_pOutOfMemoryExceptionClass);
2328     pOutOfMemory->SetHResult(COR_E_OUTOFMEMORY);
2329     pOutOfMemory->SetXCode(EXCEPTION_COMPLUS);
2330     _ASSERTE(g_pPreallocatedOutOfMemoryException == NULL);
2331     g_pPreallocatedOutOfMemoryException = CreateHandle(pOutOfMemory);
2332
2333
2334     EXCEPTIONREF pStackOverflow = (EXCEPTIONREF)AllocateObject(g_pStackOverflowExceptionClass);
2335     pStackOverflow->SetHResult(COR_E_STACKOVERFLOW);
2336     pStackOverflow->SetXCode(EXCEPTION_COMPLUS);
2337     _ASSERTE(g_pPreallocatedStackOverflowException == NULL);
2338     g_pPreallocatedStackOverflowException = CreateHandle(pStackOverflow);
2339
2340
2341     EXCEPTIONREF pExecutionEngine = (EXCEPTIONREF)AllocateObject(g_pExecutionEngineExceptionClass);
2342     pExecutionEngine->SetHResult(COR_E_EXECUTIONENGINE);
2343     pExecutionEngine->SetXCode(EXCEPTION_COMPLUS);
2344     _ASSERTE(g_pPreallocatedExecutionEngineException == NULL);
2345     g_pPreallocatedExecutionEngineException = CreateHandle(pExecutionEngine);
2346
2347
2348     EXCEPTIONREF pRudeAbortException = (EXCEPTIONREF)AllocateObject(g_pThreadAbortExceptionClass);
2349 #if CHECK_APP_DOMAIN_LEAKS
2350     pRudeAbortException->SetSyncBlockAppDomainAgile();
2351 #endif
2352     pRudeAbortException->SetHResult(COR_E_THREADABORTED);
2353     pRudeAbortException->SetXCode(EXCEPTION_COMPLUS);
2354     _ASSERTE(g_pPreallocatedRudeThreadAbortException == NULL);
2355     g_pPreallocatedRudeThreadAbortException = CreateHandle(pRudeAbortException);
2356
2357
2358     EXCEPTIONREF pAbortException = (EXCEPTIONREF)AllocateObject(g_pThreadAbortExceptionClass);
2359 #if CHECK_APP_DOMAIN_LEAKS
2360     pAbortException->SetSyncBlockAppDomainAgile();
2361 #endif
2362     pAbortException->SetHResult(COR_E_THREADABORTED);
2363     pAbortException->SetXCode(EXCEPTION_COMPLUS);
2364     _ASSERTE(g_pPreallocatedThreadAbortException == NULL);
2365     g_pPreallocatedThreadAbortException = CreateHandle( pAbortException );
2366 }
2367 #endif // CROSSGEN_COMPILE
2368
2369 void SystemDomain::Init()
2370 {
2371     STANDARD_VM_CONTRACT;
2372
2373     HRESULT hr = S_OK;
2374
2375 #ifdef _DEBUG
2376     LOG((
2377         LF_EEMEM,
2378         LL_INFO10,
2379         "sizeof(EEClass)     = %d\n"
2380         "sizeof(MethodTable) = %d\n"
2381         "sizeof(MethodDesc)= %d\n"
2382         "sizeof(FieldDesc)   = %d\n"
2383         "sizeof(Module)      = %d\n",
2384         sizeof(EEClass),
2385         sizeof(MethodTable),
2386         sizeof(MethodDesc),
2387         sizeof(FieldDesc),
2388         sizeof(Module)
2389     ));
2390 #endif // _DEBUG
2391
2392     // The base domain is initialized in SystemDomain::Attach()
2393     // to allow stub caches to use the memory pool. Do not
2394     // initialze it here!
2395
2396 #ifndef CROSSGEN_COMPILE
2397 #ifdef _DEBUG
2398     Context     *curCtx = GetCurrentContext();
2399 #endif
2400     _ASSERTE(curCtx);
2401     _ASSERTE(curCtx->GetDomain() != NULL);
2402 #endif
2403
2404 #ifdef FEATURE_PREJIT
2405     if (CLRConfig::GetConfigValue(CLRConfig::EXTERNAL_ZapDisable) != 0)
2406         g_fAllowNativeImages = false;
2407 #endif
2408
2409     m_pSystemFile = NULL;
2410     m_pSystemAssembly = NULL;
2411
2412     DWORD size = 0;
2413
2414
2415     // Get the install directory so we can find mscorlib
2416     hr = GetInternalSystemDirectory(NULL, &size);
2417     if (hr != HRESULT_FROM_WIN32(ERROR_INSUFFICIENT_BUFFER))
2418         ThrowHR(hr);
2419
2420     // GetInternalSystemDirectory returns a size, including the null!
2421     WCHAR *buffer = m_SystemDirectory.OpenUnicodeBuffer(size-1);
2422     IfFailThrow(GetInternalSystemDirectory(buffer, &size));
2423     m_SystemDirectory.CloseBuffer();
2424     m_SystemDirectory.Normalize();
2425
2426     // At this point m_SystemDirectory should already be canonicalized
2427
2428
2429     m_BaseLibrary.Append(m_SystemDirectory);
2430     if (!m_BaseLibrary.EndsWith(DIRECTORY_SEPARATOR_CHAR_W))
2431     {
2432         m_BaseLibrary.Append(DIRECTORY_SEPARATOR_CHAR_W);
2433     }
2434     m_BaseLibrary.Append(g_pwBaseLibrary);
2435     m_BaseLibrary.Normalize();
2436
2437     LoadBaseSystemClasses();
2438
2439     {
2440         // We are about to start allocating objects, so we must be in cooperative mode.
2441         // However, many of the entrypoints to the system (DllGetClassObject and all
2442         // N/Direct exports) get called multiple times.  Sometimes they initialize the EE,
2443         // but generally they remain in preemptive mode.  So we really want to push/pop
2444         // the state here:
2445         GCX_COOP();
2446
2447 #ifndef CROSSGEN_COMPILE
2448         if (!NingenEnabled())
2449         {
2450             CreatePreallocatedExceptions();
2451
2452             PreallocateSpecialObjects();
2453         }
2454 #endif
2455
2456         // Finish loading mscorlib now.
2457         m_pSystemAssembly->GetDomainAssembly()->EnsureActive();
2458     }
2459
2460 #ifdef _DEBUG
2461     BOOL fPause = EEConfig::GetConfigDWORD_DontUse_(CLRConfig::INTERNAL_PauseOnLoad, FALSE);
2462
2463     while(fPause)
2464     {
2465         ClrSleepEx(20, TRUE);
2466     }
2467 #endif // _DEBUG
2468 }
2469
2470 #ifndef CROSSGEN_COMPILE
2471 void SystemDomain::LazyInitGlobalStringLiteralMap()
2472 {
2473     CONTRACTL
2474     {
2475         THROWS;
2476         GC_TRIGGERS;
2477         MODE_ANY;
2478         INJECT_FAULT(COMPlusThrowOM(););
2479     }
2480     CONTRACTL_END;
2481
2482     // Allocate the global string literal map.
2483     NewHolder<GlobalStringLiteralMap> pGlobalStringLiteralMap(new GlobalStringLiteralMap());
2484
2485     // Initialize the global string literal map.
2486     pGlobalStringLiteralMap->Init();
2487
2488     if (InterlockedCompareExchangeT<GlobalStringLiteralMap *>(&m_pGlobalStringLiteralMap, pGlobalStringLiteralMap, NULL) == NULL)
2489     {
2490         pGlobalStringLiteralMap.SuppressRelease();
2491     }
2492 }
2493
2494 void AppDomain::CreateADUnloadStartEvent()
2495 {
2496     CONTRACTL
2497     {
2498         THROWS;
2499         GC_NOTRIGGER;
2500         SO_TOLERANT;
2501         MODE_ANY;
2502     }
2503     CONTRACTL_END;
2504
2505     g_pUnloadStartEvent = new CLREvent();
2506     g_pUnloadStartEvent->CreateAutoEvent(FALSE);
2507 }
2508
2509 /*static*/ void SystemDomain::EnumAllStaticGCRefs(promote_func* fn, ScanContext* sc)
2510 {
2511     CONTRACT_VOID
2512     {
2513         NOTHROW;
2514         GC_NOTRIGGER;
2515         MODE_COOPERATIVE;
2516     }
2517     CONTRACT_END;
2518
2519     // We don't do a normal AppDomainIterator because we can't take the SystemDomain lock from
2520     // here.
2521     // We're only supposed to call this from a Server GC. We're walking here m_appDomainIdList
2522     // m_appDomainIdList will have an AppDomain* or will be NULL. So the only danger is if we
2523     // Fetch an AppDomain and then in some other thread the AppDomain is deleted.
2524     //
2525     // If the thread deleting the AppDomain (AppDomain::~AppDomain)was in Preemptive mode
2526     // while doing SystemDomain::EnumAllStaticGCRefs we will issue a GCX_COOP(), which will wait
2527     // for the GC to finish, so we are safe
2528     //
2529     // If the thread is in cooperative mode, it must have been suspended for the GC so a delete
2530     // can't happen.
2531
2532     _ASSERTE(GCHeapUtilities::IsGCInProgress() &&
2533              GCHeapUtilities::IsServerHeap()   &&
2534              IsGCSpecialThread());
2535
2536     SystemDomain* sysDomain = SystemDomain::System();
2537     if (sysDomain)
2538     {
2539         DWORD i;
2540         DWORD count = (DWORD) m_appDomainIdList.GetCount();
2541         for (i = 0 ; i < count ; i++)
2542         {
2543             AppDomain* pAppDomain = (AppDomain *)m_appDomainIdList.Get(i);
2544             if (pAppDomain && pAppDomain->IsActive() && !pAppDomain->IsUnloading())
2545             {
2546 #ifdef FEATURE_APPDOMAIN_RESOURCE_MONITORING
2547                 if (g_fEnableARM)
2548                 {
2549                     sc->pCurrentDomain = pAppDomain;
2550                 }
2551 #endif //FEATURE_APPDOMAIN_RESOURCE_MONITORING
2552                 pAppDomain->EnumStaticGCRefs(fn, sc);
2553             }
2554         }
2555     }
2556
2557     RETURN;
2558 }
2559
2560 #ifdef FEATURE_APPDOMAIN_RESOURCE_MONITORING
2561 void SystemDomain::ResetADSurvivedBytes()
2562 {
2563     CONTRACT_VOID
2564     {
2565         NOTHROW;
2566         GC_NOTRIGGER;
2567         MODE_ANY;
2568     }
2569     CONTRACT_END;
2570
2571     _ASSERTE(GCHeapUtilities::IsGCInProgress());
2572
2573     SystemDomain* sysDomain = SystemDomain::System();
2574     if (sysDomain)
2575     {
2576         DWORD i;
2577         DWORD count = (DWORD) m_appDomainIdList.GetCount();
2578         for (i = 0 ; i < count ; i++)
2579         {
2580             AppDomain* pAppDomain = (AppDomain *)m_appDomainIdList.Get(i);
2581             if (pAppDomain && pAppDomain->IsUserActive())
2582             {
2583                 pAppDomain->ResetSurvivedBytes();
2584             }
2585         }
2586     }
2587
2588     RETURN;
2589 }
2590
2591 ULONGLONG SystemDomain::GetADSurvivedBytes()
2592 {
2593     CONTRACTL
2594     {
2595         NOTHROW;
2596         GC_NOTRIGGER;
2597         MODE_ANY;
2598     }
2599     CONTRACTL_END;
2600
2601     SystemDomain* sysDomain = SystemDomain::System();
2602     ULONGLONG ullTotalADSurvived = 0;
2603     if (sysDomain)
2604     {
2605         DWORD i;
2606         DWORD count = (DWORD) m_appDomainIdList.GetCount();
2607         for (i = 0 ; i < count ; i++)
2608         {
2609             AppDomain* pAppDomain = (AppDomain *)m_appDomainIdList.Get(i);
2610             if (pAppDomain && pAppDomain->IsUserActive())
2611             {
2612                 ULONGLONG ullSurvived = pAppDomain->GetSurvivedBytes();
2613                 ullTotalADSurvived += ullSurvived;
2614             }
2615         }
2616     }
2617
2618     return ullTotalADSurvived;
2619 }
2620
2621 void SystemDomain::RecordTotalSurvivedBytes(size_t totalSurvivedBytes)
2622 {
2623     CONTRACT_VOID
2624     {
2625         NOTHROW;
2626         GC_NOTRIGGER;
2627         MODE_ANY;
2628     }
2629     CONTRACT_END;
2630
2631     m_totalSurvivedBytes = totalSurvivedBytes;
2632
2633     SystemDomain* sysDomain = SystemDomain::System();
2634     if (sysDomain)
2635     {
2636         DWORD i;
2637         DWORD count = (DWORD) m_appDomainIdList.GetCount();
2638         for (i = 0 ; i < count ; i++)
2639         {
2640             AppDomain* pAppDomain = (AppDomain *)m_appDomainIdList.Get(i);
2641             if (pAppDomain && pAppDomain->IsUserActive())
2642             {
2643                 FireEtwAppDomainMemSurvived((ULONGLONG)pAppDomain, pAppDomain->GetSurvivedBytes(), totalSurvivedBytes, GetClrInstanceId());
2644             }
2645         }
2646     }
2647
2648     RETURN;
2649 }
2650 #endif //FEATURE_APPDOMAIN_RESOURCE_MONITORING
2651
2652 // Only called when EE is suspended.
2653 DWORD SystemDomain::GetTotalNumSizedRefHandles()
2654 {
2655     CONTRACTL
2656     {
2657         NOTHROW;
2658         GC_NOTRIGGER;
2659         MODE_ANY;
2660     }
2661     CONTRACTL_END;
2662
2663     SystemDomain* sysDomain = SystemDomain::System();
2664     DWORD dwTotalNumSizedRefHandles = 0;
2665     if (sysDomain)
2666     {
2667         DWORD i;
2668         DWORD count = (DWORD) m_appDomainIdList.GetCount();
2669         for (i = 0 ; i < count ; i++)
2670         {
2671             AppDomain* pAppDomain = (AppDomain *)m_appDomainIdList.Get(i);
2672             if (pAppDomain && pAppDomain->IsActive() && !pAppDomain->IsUnloading())
2673             {
2674                 dwTotalNumSizedRefHandles += pAppDomain->GetNumSizedRefHandles();
2675             }
2676         }
2677     }
2678
2679     return dwTotalNumSizedRefHandles;
2680 }
2681 #endif // CROSSGEN_COMPILE
2682
2683 void SystemDomain::LoadBaseSystemClasses()
2684 {
2685     STANDARD_VM_CONTRACT;
2686
2687     ETWOnStartup(LdSysBases_V1, LdSysBasesEnd_V1);
2688
2689     {
2690         m_pSystemFile = PEAssembly::OpenSystem(NULL);
2691     }
2692     // Only partially load the system assembly. Other parts of the code will want to access
2693     // the globals in this function before finishing the load.
2694     m_pSystemAssembly = DefaultDomain()->LoadDomainAssembly(NULL, m_pSystemFile, FILE_LOAD_POST_LOADLIBRARY)->GetCurrentAssembly();
2695
2696     // Set up binder for mscorlib
2697     MscorlibBinder::AttachModule(m_pSystemAssembly->GetManifestModule());
2698
2699     // Load Object
2700     g_pObjectClass = MscorlibBinder::GetClass(CLASS__OBJECT);
2701
2702     // Now that ObjectClass is loaded, we can set up
2703     // the system for finalizers.  There is no point in deferring this, since we need
2704     // to know this before we allocate our first object.
2705     g_pObjectFinalizerMD = MscorlibBinder::GetMethod(METHOD__OBJECT__FINALIZE);
2706
2707
2708     g_pCanonMethodTableClass = MscorlibBinder::GetClass(CLASS____CANON);
2709
2710     // NOTE: !!!IMPORTANT!!! ValueType and Enum MUST be loaded one immediately after
2711     //                       the other, because we have coded MethodTable::IsChildValueType
2712     //                       in such a way that it depends on this behaviour.
2713     // Load the ValueType class
2714     g_pValueTypeClass = MscorlibBinder::GetClass(CLASS__VALUE_TYPE);
2715
2716     // Load the enum class
2717     g_pEnumClass = MscorlibBinder::GetClass(CLASS__ENUM);
2718     _ASSERTE(!g_pEnumClass->IsValueType());
2719
2720     // Load System.RuntimeType
2721     g_pRuntimeTypeClass = MscorlibBinder::GetClass(CLASS__CLASS);
2722     _ASSERTE(g_pRuntimeTypeClass->IsFullyLoaded());
2723
2724     // Load Array class
2725     g_pArrayClass = MscorlibBinder::GetClass(CLASS__ARRAY);
2726
2727     // Calling a method on IList<T> for an array requires redirection to a method on
2728     // the SZArrayHelper class. Retrieving such methods means calling
2729     // GetActualImplementationForArrayGenericIListMethod, which calls FetchMethod for
2730     // the corresponding method on SZArrayHelper. This basically results in a class
2731     // load due to a method call, which the debugger cannot handle, so we pre-load
2732     // the SZArrayHelper class here.
2733     g_pSZArrayHelperClass = MscorlibBinder::GetClass(CLASS__SZARRAYHELPER);
2734
2735     // Load ByReference class
2736     //
2737     // NOTE: ByReference<T> must be the first by-ref-like system type to be loaded,
2738     //       because MethodTable::ClassifyEightBytesWithManagedLayout depends on it.
2739     g_pByReferenceClass = MscorlibBinder::GetClass(CLASS__BYREFERENCE);
2740
2741     // Load Nullable class
2742     g_pNullableClass = MscorlibBinder::GetClass(CLASS__NULLABLE);
2743
2744     // Load the Object array class.
2745     g_pPredefinedArrayTypes[ELEMENT_TYPE_OBJECT] = ClassLoader::LoadArrayTypeThrowing(TypeHandle(g_pObjectClass)).AsArray();
2746
2747     // We have delayed allocation of mscorlib's static handles until we load the object class
2748     MscorlibBinder::GetModule()->AllocateRegularStaticHandles(DefaultDomain());
2749
2750     g_TypedReferenceMT = MscorlibBinder::GetClass(CLASS__TYPED_REFERENCE);
2751
2752     // Make sure all primitive types are loaded
2753     for (int et = ELEMENT_TYPE_VOID; et <= ELEMENT_TYPE_R8; et++)
2754         MscorlibBinder::LoadPrimitiveType((CorElementType)et);
2755
2756     MscorlibBinder::LoadPrimitiveType(ELEMENT_TYPE_I);
2757     MscorlibBinder::LoadPrimitiveType(ELEMENT_TYPE_U);
2758
2759     // unfortunately, the following cannot be delay loaded since the jit
2760     // uses it to compute method attributes within a function that cannot
2761     // handle Complus exception and the following call goes through a path
2762     // where a complus exception can be thrown. It is unfortunate, because
2763     // we know that the delegate class and multidelegate class are always
2764     // guaranteed to be found.
2765     g_pDelegateClass = MscorlibBinder::GetClass(CLASS__DELEGATE);
2766     g_pMulticastDelegateClass = MscorlibBinder::GetClass(CLASS__MULTICAST_DELEGATE);
2767
2768     // used by IsImplicitInterfaceOfSZArray
2769     MscorlibBinder::GetClass(CLASS__IENUMERABLEGENERIC);
2770     MscorlibBinder::GetClass(CLASS__ICOLLECTIONGENERIC);
2771     MscorlibBinder::GetClass(CLASS__ILISTGENERIC);
2772     MscorlibBinder::GetClass(CLASS__IREADONLYCOLLECTIONGENERIC);
2773     MscorlibBinder::GetClass(CLASS__IREADONLYLISTGENERIC);
2774
2775     // Load String
2776     g_pStringClass = MscorlibBinder::LoadPrimitiveType(ELEMENT_TYPE_STRING);
2777     _ASSERTE(g_pStringClass->GetBaseSize() == ObjSizeOf(StringObject)+sizeof(WCHAR));
2778     _ASSERTE(g_pStringClass->GetComponentSize() == 2);
2779
2780     // Used by Buffer::BlockCopy
2781     g_pByteArrayMT = ClassLoader::LoadArrayTypeThrowing(
2782         TypeHandle(MscorlibBinder::GetElementType(ELEMENT_TYPE_U1))).AsArray()->GetMethodTable();
2783
2784 #ifndef CROSSGEN_COMPILE
2785     ECall::PopulateManagedStringConstructors();
2786 #endif // CROSSGEN_COMPILE
2787
2788     g_pExceptionClass = MscorlibBinder::GetClass(CLASS__EXCEPTION);
2789     g_pOutOfMemoryExceptionClass = MscorlibBinder::GetException(kOutOfMemoryException);
2790     g_pStackOverflowExceptionClass = MscorlibBinder::GetException(kStackOverflowException);
2791     g_pExecutionEngineExceptionClass = MscorlibBinder::GetException(kExecutionEngineException);
2792     g_pThreadAbortExceptionClass = MscorlibBinder::GetException(kThreadAbortException);
2793
2794
2795     // used by gc to handle predefined agility checking
2796     g_pThreadClass = MscorlibBinder::GetClass(CLASS__THREAD);
2797
2798 #ifdef FEATURE_COMINTEROP
2799     g_pBaseCOMObject = MscorlibBinder::GetClass(CLASS__COM_OBJECT);
2800     g_pBaseRuntimeClass = MscorlibBinder::GetClass(CLASS__RUNTIME_CLASS);
2801
2802     MscorlibBinder::GetClass(CLASS__IDICTIONARYGENERIC);
2803     MscorlibBinder::GetClass(CLASS__IREADONLYDICTIONARYGENERIC);
2804     MscorlibBinder::GetClass(CLASS__ATTRIBUTE);
2805     MscorlibBinder::GetClass(CLASS__EVENT_HANDLERGENERIC);
2806
2807     MscorlibBinder::GetClass(CLASS__IENUMERABLE);
2808     MscorlibBinder::GetClass(CLASS__ICOLLECTION);
2809     MscorlibBinder::GetClass(CLASS__ILIST);
2810     MscorlibBinder::GetClass(CLASS__IDISPOSABLE);
2811
2812 #ifdef _DEBUG
2813     WinRTInterfaceRedirector::VerifyRedirectedInterfaceStubs();
2814 #endif // _DEBUG
2815 #endif
2816
2817 #ifdef FEATURE_ICASTABLE
2818     g_pICastableInterface = MscorlibBinder::GetClass(CLASS__ICASTABLE);
2819 #endif // FEATURE_ICASTABLE
2820
2821     // Load a special marker method used to detect Constrained Execution Regions
2822     // at jit time.
2823     g_pExecuteBackoutCodeHelperMethod = MscorlibBinder::GetMethod(METHOD__RUNTIME_HELPERS__EXECUTE_BACKOUT_CODE_HELPER);
2824
2825     // Make sure that FCall mapping for Monitor.Enter is initialized. We need it in case Monitor.Enter is used only as JIT helper.
2826     // For more details, see comment in code:JITutil_MonEnterWorker around "__me = GetEEFuncEntryPointMacro(JIT_MonEnter)".
2827     ECall::GetFCallImpl(MscorlibBinder::GetMethod(METHOD__MONITOR__ENTER));
2828
2829 #ifdef PROFILING_SUPPORTED
2830     // Note that g_profControlBlock.fBaseSystemClassesLoaded must be set to TRUE only after
2831     // all base system classes are loaded.  Profilers are not allowed to call any type-loading
2832     // APIs until g_profControlBlock.fBaseSystemClassesLoaded is TRUE.  It is important that
2833     // all base system classes need to be loaded before profilers can trigger the type loading.
2834     g_profControlBlock.fBaseSystemClassesLoaded = TRUE;
2835 #endif // PROFILING_SUPPORTED
2836
2837 #if defined(_DEBUG) && !defined(CROSSGEN_COMPILE)
2838     if (!NingenEnabled())
2839     {
2840         g_Mscorlib.Check();
2841     }
2842 #endif
2843
2844 #if defined(HAVE_GCCOVER) && defined(FEATURE_PREJIT)
2845     if (GCStress<cfg_instr_ngen>::IsEnabled())
2846     {
2847         // Setting up gc coverage requires the base system classes
2848         //  to be initialized. So we have deferred it until now for mscorlib.
2849         Module *pModule = MscorlibBinder::GetModule();
2850         _ASSERTE(pModule->IsSystem());
2851         if(pModule->HasNativeImage())
2852         {
2853             SetupGcCoverageForNativeImage(pModule);
2854         }
2855     }
2856 #endif // defined(HAVE_GCCOVER) && !defined(FEATURE_PREJIT)
2857 }
2858
2859 /*static*/
2860 void SystemDomain::LoadDomain(AppDomain *pDomain)
2861 {
2862     CONTRACTL
2863     {
2864         THROWS;
2865         GC_TRIGGERS;
2866         MODE_ANY;
2867         PRECONDITION(CheckPointer(System()));
2868         INJECT_FAULT(COMPlusThrowOM(););
2869     }
2870     CONTRACTL_END;
2871
2872     pDomain->SetCanUnload();    // by default can unload any domain
2873     SystemDomain::System()->AddDomain(pDomain);
2874 }
2875
2876 ADIndex SystemDomain::GetNewAppDomainIndex(AppDomain *pAppDomain)
2877 {
2878     STANDARD_VM_CONTRACT;
2879
2880     DWORD count = m_appDomainIndexList.GetCount();
2881     DWORD i;
2882
2883 #ifdef _DEBUG
2884     if (count < 2000)
2885     {
2886         // So that we can keep AD index inside object header.
2887         // We do not want to create syncblock unless needed.
2888         i = count;
2889     }
2890     else
2891     {
2892 #endif // _DEBUG
2893         //
2894         // Look for an unused index.  Note that in a checked build,
2895         // we never reuse indexes - this makes it easier to tell
2896         // when we are looking at a stale app domain.
2897         //
2898
2899         i = m_appDomainIndexList.FindElement(m_dwLowestFreeIndex, NULL);
2900         if (i == (DWORD) ArrayList::NOT_FOUND)
2901             i = count;
2902         m_dwLowestFreeIndex = i+1;
2903 #ifdef _DEBUG
2904         if (m_dwLowestFreeIndex >= 2000)
2905         {
2906             m_dwLowestFreeIndex = 0;
2907         }
2908     }
2909 #endif // _DEBUG
2910
2911     if (i == count)
2912         IfFailThrow(m_appDomainIndexList.Append(pAppDomain));
2913     else
2914         m_appDomainIndexList.Set(i, pAppDomain);
2915
2916     _ASSERTE(i < m_appDomainIndexList.GetCount());
2917
2918     // Note that index 0 means domain agile.
2919     return ADIndex(i+1);
2920 }
2921
2922 void SystemDomain::ReleaseAppDomainIndex(ADIndex index)
2923 {
2924     WRAPPER_NO_CONTRACT;
2925     SystemDomain::LockHolder lh;
2926     // Note that index 0 means domain agile.
2927     index.m_dwIndex--;
2928
2929     _ASSERTE(m_appDomainIndexList.Get(index.m_dwIndex) != NULL);
2930
2931     m_appDomainIndexList.Set(index.m_dwIndex, NULL);
2932
2933 #ifndef _DEBUG
2934     if (index.m_dwIndex < m_dwLowestFreeIndex)
2935         m_dwLowestFreeIndex = index.m_dwIndex;
2936 #endif // !_DEBUG
2937 }
2938
2939 #endif // !DACCESS_COMPILE
2940
2941 PTR_AppDomain SystemDomain::GetAppDomainAtIndex(ADIndex index)
2942 {
2943     LIMITED_METHOD_CONTRACT;
2944     SUPPORTS_DAC;
2945     _ASSERTE(index.m_dwIndex != 0);
2946
2947     PTR_AppDomain pAppDomain = TestGetAppDomainAtIndex(index);
2948
2949     _ASSERTE(pAppDomain || !"Attempt to access unloaded app domain");
2950
2951     return pAppDomain;
2952 }
2953
2954 PTR_AppDomain SystemDomain::TestGetAppDomainAtIndex(ADIndex index)
2955 {
2956     LIMITED_METHOD_CONTRACT;
2957     SUPPORTS_DAC;
2958     _ASSERTE(index.m_dwIndex != 0);
2959     index.m_dwIndex--;
2960
2961 #ifndef DACCESS_COMPILE
2962     _ASSERTE(index.m_dwIndex < (DWORD)m_appDomainIndexList.GetCount());
2963     AppDomain *pAppDomain = (AppDomain*) m_appDomainIndexList.Get(index.m_dwIndex);
2964 #else // DACCESS_COMPILE
2965     PTR_ArrayListStatic pList = &m_appDomainIndexList;
2966     AppDomain *pAppDomain = dac_cast<PTR_AppDomain>(pList->Get(index.m_dwIndex));
2967 #endif // DACCESS_COMPILE
2968     return PTR_AppDomain(pAppDomain);
2969 }
2970
2971 #ifndef DACCESS_COMPILE
2972
2973 // See also code:SystemDomain::ReleaseAppDomainId
2974 ADID SystemDomain::GetNewAppDomainId(AppDomain *pAppDomain)
2975 {
2976     CONTRACTL
2977     {
2978         THROWS;
2979         GC_TRIGGERS;
2980         MODE_ANY;
2981         INJECT_FAULT(COMPlusThrowOM(););
2982     }
2983     CONTRACTL_END;
2984
2985     DWORD i = m_appDomainIdList.GetCount();
2986
2987     IfFailThrow(m_appDomainIdList.Append(pAppDomain));
2988
2989     _ASSERTE(i < m_appDomainIdList.GetCount());
2990
2991     return ADID(i+1);
2992 }
2993
2994 AppDomain *SystemDomain::GetAppDomainAtId(ADID index)
2995 {
2996     CONTRACTL
2997     {
2998 #ifdef _DEBUG
2999         if (!SystemDomain::IsUnderDomainLock() && !IsGCThread()) { MODE_COOPERATIVE;} else { DISABLED(MODE_ANY);}
3000 #endif
3001         GC_NOTRIGGER;
3002         SO_TOLERANT;
3003         NOTHROW;
3004     }
3005     CONTRACTL_END;
3006
3007     if(index.m_dwId == 0)
3008         return NULL;
3009     DWORD requestedID = index.m_dwId - 1;
3010
3011     if(requestedID  >= (DWORD)m_appDomainIdList.GetCount())
3012         return NULL;
3013
3014     AppDomain * result = (AppDomain *)m_appDomainIdList.Get(requestedID);
3015
3016 #ifndef CROSSGEN_COMPILE
3017     if(result==NULL && GetThread() == FinalizerThread::GetFinalizerThread() &&
3018         SystemDomain::System()->AppDomainBeingUnloaded()!=NULL &&
3019         SystemDomain::System()->AppDomainBeingUnloaded()->GetId()==index)
3020         result=SystemDomain::System()->AppDomainBeingUnloaded();
3021     // If the current thread can't enter the AppDomain, then don't return it.
3022     if (!result || !result->CanThreadEnter(GetThread()))
3023         return NULL;
3024 #endif // CROSSGEN_COMPILE
3025
3026     return result;
3027 }
3028
3029 // Releases an appdomain index.   Note that today we have code that depends on these
3030 // indexes not being recycled, so we don't actually shrink m_appDomainIdList, but
3031 // simply zero out an entry.   THus we 'leak' the memory associated the slot in
3032 // m_appDomainIdList.
3033 //
3034 // TODO make this a sparse structure so that we avoid that leak.
3035 //
3036 void SystemDomain::ReleaseAppDomainId(ADID index)
3037 {
3038     LIMITED_METHOD_CONTRACT;
3039     index.m_dwId--;
3040
3041     _ASSERTE(index.m_dwId < (DWORD)m_appDomainIdList.GetCount());
3042
3043     m_appDomainIdList.Set(index.m_dwId, NULL);
3044 }
3045
3046 #if defined(FEATURE_COMINTEROP_APARTMENT_SUPPORT) && !defined(CROSSGEN_COMPILE)
3047
3048 #ifdef _DEBUG
3049 int g_fMainThreadApartmentStateSet = 0;
3050 #endif
3051
3052 Thread::ApartmentState SystemDomain::GetEntryPointThreadAptState(IMDInternalImport* pScope, mdMethodDef mdMethod)
3053 {
3054     STANDARD_VM_CONTRACT;
3055
3056     HRESULT hr;
3057     IfFailThrow(hr = pScope->GetCustomAttributeByName(mdMethod,
3058                                                       DEFAULTDOMAIN_MTA_TYPE,
3059                                                       NULL,
3060                                                       NULL));
3061     BOOL fIsMTA = FALSE;
3062     if(hr == S_OK)
3063         fIsMTA = TRUE;
3064
3065     IfFailThrow(hr = pScope->GetCustomAttributeByName(mdMethod,
3066                                                       DEFAULTDOMAIN_STA_TYPE,
3067                                                       NULL,
3068                                                       NULL));
3069     BOOL fIsSTA = FALSE;
3070     if (hr == S_OK)
3071         fIsSTA = TRUE;
3072
3073     if (fIsSTA && fIsMTA)
3074         COMPlusThrowHR(COR_E_CUSTOMATTRIBUTEFORMAT);
3075
3076     if (fIsSTA)
3077         return Thread::AS_InSTA;
3078     else if (fIsMTA)
3079         return Thread::AS_InMTA;
3080
3081     return Thread::AS_Unknown;
3082 }
3083
3084 void SystemDomain::SetThreadAptState (IMDInternalImport* pScope, Thread::ApartmentState state)
3085 {
3086     STANDARD_VM_CONTRACT;
3087
3088     BOOL fIsLegacy = FALSE;
3089
3090     // Check for legacy behavior regarding COM Apartment state of the main thread.
3091
3092 #define METAMODEL_MAJOR_VER_WITH_NEW_BEHAVIOR 2
3093 #define METAMODEL_MINOR_VER_WITH_NEW_BEHAVIOR 0
3094
3095     LPCSTR pVer;
3096     IfFailThrow(pScope->GetVersionString(&pVer));
3097
3098     // Does this look like a version?
3099     if (pVer != NULL)
3100     {
3101         // Is it 'vN.' where N is a digit?
3102         if ((pVer[0] == 'v' || pVer[0] == 'V') &&
3103             IS_DIGIT(pVer[1]) &&
3104             (pVer[2] == '.') )
3105         {
3106             // Looks like a version.  Is it lesser than v2.0 major version where we start using new behavior?
3107             fIsLegacy = DIGIT_TO_INT(pVer[1]) < METAMODEL_MAJOR_VER_WITH_NEW_BEHAVIOR;
3108         }
3109     }
3110
3111     if (!fIsLegacy && g_pConfig != NULL)
3112     {
3113         fIsLegacy = g_pConfig->LegacyApartmentInitPolicy();
3114     }
3115
3116
3117     Thread* pThread = GetThread();
3118     _ASSERTE(pThread);
3119
3120     if(state == Thread::AS_InSTA)
3121     {
3122         Thread::ApartmentState pState = pThread->SetApartment(Thread::AS_InSTA, TRUE);
3123         _ASSERTE(pState == Thread::AS_InSTA);
3124     }
3125     else if ((state == Thread::AS_InMTA) || (!fIsLegacy))
3126     {
3127         // If either MTAThreadAttribute is specified or (if no attribute is specified and we are not
3128         // running in legacy mode), then
3129         // we will set the apartment state to MTA. The reason for this is to ensure the apartment
3130         // state is consistent and reliably set. Without this, the apartment state for the main
3131         // thread would be undefined and would actually be dependent on if the assembly was
3132         // ngen'd, which other type were loaded, etc.
3133         Thread::ApartmentState pState = pThread->SetApartment(Thread::AS_InMTA, TRUE);
3134         _ASSERTE(pState == Thread::AS_InMTA);
3135     }
3136
3137 #ifdef _DEBUG
3138     g_fMainThreadApartmentStateSet++;
3139 #endif
3140 }
3141 #endif // defined(FEATURE_COMINTEROP_APARTMENT_SUPPORT) && !defined(CROSSGEN_COMPILE)
3142
3143 // Looks in all the modules for the DefaultDomain attribute
3144 // The order is assembly and then the modules. It is first
3145 // come, first serve.
3146 BOOL SystemDomain::SetGlobalSharePolicyUsingAttribute(IMDInternalImport* pScope, mdMethodDef mdMethod)
3147 {
3148     STANDARD_VM_CONTRACT;
3149
3150
3151     return FALSE;
3152 }
3153
3154 void SystemDomain::SetupDefaultDomain()
3155 {
3156     CONTRACT_VOID
3157     {
3158         THROWS;
3159         GC_TRIGGERS;
3160         MODE_ANY;
3161         INJECT_FAULT(COMPlusThrowOM(););
3162     }
3163     CONTRACT_END;
3164
3165
3166     Thread *pThread = GetThread();
3167     _ASSERTE(pThread);
3168
3169     AppDomain *pDomain;
3170     pDomain = pThread->GetDomain();
3171     _ASSERTE(pDomain);
3172
3173     GCX_COOP();
3174
3175     ENTER_DOMAIN_PTR(SystemDomain::System()->DefaultDomain(),ADV_DEFAULTAD)
3176     {
3177         // Push this frame around loading the main assembly to ensure the
3178         // debugger can properly recgonize any managed code that gets run
3179         // as "class initializaion" code.
3180         FrameWithCookie<DebuggerClassInitMarkFrame> __dcimf;
3181
3182         {
3183             GCX_PREEMP();
3184             InitializeDefaultDomain(TRUE);
3185         }
3186
3187         __dcimf.Pop();
3188     }
3189     END_DOMAIN_TRANSITION;
3190
3191     RETURN;
3192 }
3193
3194 HRESULT SystemDomain::SetupDefaultDomainNoThrow()
3195 {
3196     CONTRACTL
3197     {
3198         NOTHROW;
3199         MODE_ANY;
3200     }
3201     CONTRACTL_END;
3202
3203     HRESULT hr = S_OK;
3204
3205     EX_TRY
3206     {
3207         SystemDomain::SetupDefaultDomain();
3208     }
3209     EX_CATCH_HRESULT(hr);
3210
3211     return hr;
3212 }
3213
3214 #ifdef _DEBUG
3215 int g_fInitializingInitialAD = 0;
3216 #endif
3217
3218 // This routine completes the initialization of the default domaine.
3219 // After this call mananged code can be executed.
3220 void SystemDomain::InitializeDefaultDomain(
3221     BOOL allowRedirects,
3222     ICLRPrivBinder * pBinder)
3223 {
3224     STANDARD_VM_CONTRACT;
3225
3226     WCHAR* pwsConfig = NULL;
3227     WCHAR* pwsPath = NULL;
3228
3229     ETWOnStartup (InitDefaultDomain_V1, InitDefaultDomainEnd_V1);
3230
3231
3232     // Setup the default AppDomain.
3233
3234 #ifdef _DEBUG
3235     g_fInitializingInitialAD++;
3236 #endif
3237
3238     AppDomain* pDefaultDomain = SystemDomain::System()->DefaultDomain();
3239
3240     if (pBinder != nullptr)
3241     {
3242         pDefaultDomain->SetLoadContextHostBinder(pBinder);
3243     }
3244
3245     {
3246         GCX_COOP();
3247
3248         pDefaultDomain->InitializeDomainContext(allowRedirects, pwsPath, pwsConfig);
3249
3250 #ifndef CROSSGEN_COMPILE
3251         if (!NingenEnabled())
3252         {
3253
3254             if (!IsSingleAppDomain())
3255             {
3256                 pDefaultDomain->InitializeDefaultDomainManager();
3257             }
3258         }
3259 #endif // CROSSGEN_COMPILE
3260     }
3261
3262     // DefaultDomain Load event
3263     ETW::LoaderLog::DomainLoad(pDefaultDomain);
3264
3265 #ifdef _DEBUG
3266     g_fInitializingInitialAD--;
3267 #endif
3268
3269     TESTHOOKCALL(RuntimeStarted(RTS_DEFAULTADREADY));
3270 }
3271
3272
3273
3274 #ifndef CROSSGEN_COMPILE
3275
3276 #ifdef _DEBUG
3277 Volatile<LONG> g_fInExecuteMainMethod = 0;
3278 #endif
3279
3280
3281
3282
3283 #endif // CROSSGEN_COMPILE
3284
3285
3286
3287 // Helper function to load an assembly. This is called from LoadCOMClass.
3288 /* static */
3289
3290 Assembly *AppDomain::LoadAssemblyHelper(LPCWSTR wszAssembly,
3291                                         LPCWSTR wszCodeBase)
3292 {
3293     CONTRACT(Assembly *)
3294     {
3295         THROWS;
3296         POSTCONDITION(CheckPointer(RETVAL));
3297         PRECONDITION(wszAssembly || wszCodeBase);
3298         INJECT_FAULT(COMPlusThrowOM(););
3299     }
3300     CONTRACT_END;
3301
3302     AssemblySpec spec;
3303     if(wszAssembly) {
3304         #define MAKE_TRANSLATIONFAILED  { ThrowOutOfMemory(); }
3305         MAKE_UTF8PTR_FROMWIDE(szAssembly,wszAssembly);
3306         #undef  MAKE_TRANSLATIONFAILED
3307
3308         IfFailThrow(spec.Init(szAssembly));
3309     }
3310
3311     if (wszCodeBase) {
3312         spec.SetCodeBase(wszCodeBase);
3313     }
3314     RETURN spec.LoadAssembly(FILE_LOADED);
3315 }
3316
3317 #if defined(FEATURE_CLASSIC_COMINTEROP) && !defined(CROSSGEN_COMPILE)
3318
3319 MethodTable *AppDomain::LoadCOMClass(GUID clsid,
3320                                      BOOL bLoadRecord/*=FALSE*/,
3321                                      BOOL* pfAssemblyInReg/*=NULL*/)
3322 {
3323     // @CORESYSTODO: what to do here?
3324     return NULL;
3325 }
3326
3327 #endif // FEATURE_CLASSIC_COMINTEROP && !CROSSGEN_COMPILE
3328
3329
3330 /*static*/
3331 bool SystemDomain::IsReflectionInvocationMethod(MethodDesc* pMeth)
3332 {
3333     CONTRACTL
3334     {
3335         THROWS;
3336         GC_TRIGGERS;
3337         MODE_ANY;
3338     }
3339     CONTRACTL_END;
3340
3341     MethodTable* pCaller = pMeth->GetMethodTable();
3342
3343     // All Reflection Invocation methods are defined in mscorlib.dll
3344     if (!pCaller->GetModule()->IsSystem())
3345         return false;
3346
3347     /* List of types that should be skipped to identify true caller */
3348     static const BinderClassID reflectionInvocationTypes[] = {
3349         CLASS__METHOD,
3350         CLASS__METHOD_BASE,
3351         CLASS__METHOD_INFO,
3352         CLASS__CONSTRUCTOR,
3353         CLASS__CONSTRUCTOR_INFO,
3354         CLASS__CLASS,
3355         CLASS__TYPE_HANDLE,
3356         CLASS__METHOD_HANDLE,
3357         CLASS__FIELD_HANDLE,
3358         CLASS__TYPE,
3359         CLASS__FIELD,
3360         CLASS__RT_FIELD_INFO,
3361         CLASS__FIELD_INFO,
3362         CLASS__EVENT,
3363         CLASS__EVENT_INFO,
3364         CLASS__PROPERTY,
3365         CLASS__PROPERTY_INFO,
3366         CLASS__ACTIVATOR,
3367         CLASS__ARRAY,
3368         CLASS__ASSEMBLYBASE,
3369         CLASS__ASSEMBLY,
3370         CLASS__TYPE_DELEGATOR,
3371         CLASS__RUNTIME_HELPERS,
3372         CLASS__LAZY_INITIALIZER,
3373         CLASS__DYNAMICMETHOD,
3374         CLASS__DELEGATE,
3375         CLASS__MULTICAST_DELEGATE,
3376         CLASS__APP_DOMAIN
3377     };
3378
3379     static const BinderClassID genericReflectionInvocationTypes[] = {
3380         CLASS__LAZY
3381     };
3382
3383     static mdTypeDef genericReflectionInvocationTypeDefs[NumItems(genericReflectionInvocationTypes)];
3384
3385     static bool fInited = false;
3386
3387     if (!VolatileLoad(&fInited))
3388     {
3389         // Make sure all types are loaded so that we can use faster GetExistingClass()
3390         for (unsigned i = 0; i < NumItems(reflectionInvocationTypes); i++)
3391         {
3392             MscorlibBinder::GetClass(reflectionInvocationTypes[i]);
3393         }
3394
3395         // Make sure all types are loaded so that we can use faster GetExistingClass()
3396         for (unsigned i = 0; i < NumItems(genericReflectionInvocationTypes); i++)
3397         {
3398             genericReflectionInvocationTypeDefs[i] = MscorlibBinder::GetClass(genericReflectionInvocationTypes[i])->GetCl();
3399         }
3400
3401         MscorlibBinder::GetClass(CLASS__APP_DOMAIN);
3402
3403         VolatileStore(&fInited, true);
3404     }
3405
3406     if (pCaller->HasInstantiation())
3407     {
3408         // For generic types, pCaller will be an instantiated type and never equal to the type definition.
3409         // So we compare their TypeDef tokens instead.
3410         for (unsigned i = 0; i < NumItems(genericReflectionInvocationTypeDefs); i++)
3411         {
3412             if (pCaller->GetCl() == genericReflectionInvocationTypeDefs[i])
3413                 return true;
3414         }
3415     }
3416     else
3417     {
3418         for (unsigned i = 0; i < NumItems(reflectionInvocationTypes); i++)
3419         {
3420             if (MscorlibBinder::GetExistingClass(reflectionInvocationTypes[i]) == pCaller)
3421                 return true;
3422         }
3423     }
3424
3425     return false;
3426 }
3427
3428 #ifndef CROSSGEN_COMPILE
3429 struct CallersDataWithStackMark
3430 {
3431     StackCrawlMark* stackMark;
3432     BOOL foundMe;
3433     MethodDesc* pFoundMethod;
3434     MethodDesc* pPrevMethod;
3435     AppDomain*  pAppDomain;
3436 };
3437
3438 /*static*/
3439 MethodDesc* SystemDomain::GetCallersMethod(StackCrawlMark* stackMark,
3440                                            AppDomain **ppAppDomain/*=NULL*/)
3441
3442 {
3443     CONTRACTL
3444     {
3445         THROWS;
3446         GC_TRIGGERS;
3447         MODE_ANY;
3448         INJECT_FAULT(COMPlusThrowOM(););
3449     }
3450     CONTRACTL_END;
3451
3452     GCX_COOP();
3453
3454     CallersDataWithStackMark cdata;
3455     ZeroMemory(&cdata, sizeof(CallersDataWithStackMark));
3456     cdata.stackMark = stackMark;
3457
3458     GetThread()->StackWalkFrames(CallersMethodCallbackWithStackMark, &cdata, FUNCTIONSONLY | LIGHTUNWIND);
3459
3460     if(cdata.pFoundMethod) {
3461         if (ppAppDomain)
3462             *ppAppDomain = cdata.pAppDomain;
3463         return cdata.pFoundMethod;
3464     } else
3465         return NULL;
3466 }
3467
3468 /*static*/
3469 MethodTable* SystemDomain::GetCallersType(StackCrawlMark* stackMark,
3470                                           AppDomain **ppAppDomain/*=NULL*/)
3471
3472 {
3473     CONTRACTL
3474     {
3475         THROWS;
3476         GC_TRIGGERS;
3477         MODE_COOPERATIVE;
3478         INJECT_FAULT(COMPlusThrowOM(););
3479     }
3480     CONTRACTL_END;
3481
3482     CallersDataWithStackMark cdata;
3483     ZeroMemory(&cdata, sizeof(CallersDataWithStackMark));
3484     cdata.stackMark = stackMark;
3485
3486     GetThread()->StackWalkFrames(CallersMethodCallbackWithStackMark, &cdata, FUNCTIONSONLY | LIGHTUNWIND);
3487
3488     if(cdata.pFoundMethod) {
3489         if (ppAppDomain)
3490             *ppAppDomain = cdata.pAppDomain;
3491         return cdata.pFoundMethod->GetMethodTable();
3492     } else
3493         return NULL;
3494 }
3495
3496 /*static*/
3497 Module* SystemDomain::GetCallersModule(StackCrawlMark* stackMark,
3498                                        AppDomain **ppAppDomain/*=NULL*/)
3499
3500 {
3501     CONTRACTL
3502     {
3503         THROWS;
3504         GC_TRIGGERS;
3505         MODE_ANY;
3506         INJECT_FAULT(COMPlusThrowOM(););
3507     }
3508     CONTRACTL_END;
3509
3510     GCX_COOP();
3511
3512     CallersDataWithStackMark cdata;
3513     ZeroMemory(&cdata, sizeof(CallersDataWithStackMark));
3514     cdata.stackMark = stackMark;
3515
3516     GetThread()->StackWalkFrames(CallersMethodCallbackWithStackMark, &cdata, FUNCTIONSONLY | LIGHTUNWIND);
3517
3518     if(cdata.pFoundMethod) {
3519         if (ppAppDomain)
3520             *ppAppDomain = cdata.pAppDomain;
3521         return cdata.pFoundMethod->GetModule();
3522     } else
3523         return NULL;
3524 }
3525
3526 struct CallersData
3527 {
3528     int skip;
3529     MethodDesc* pMethod;
3530 };
3531
3532 /*static*/
3533 Assembly* SystemDomain::GetCallersAssembly(StackCrawlMark *stackMark,
3534                                            AppDomain **ppAppDomain/*=NULL*/)
3535 {
3536     WRAPPER_NO_CONTRACT;
3537     Module* mod = GetCallersModule(stackMark, ppAppDomain);
3538     if (mod)
3539         return mod->GetAssembly();
3540     return NULL;
3541 }
3542
3543 /*static*/
3544 Module* SystemDomain::GetCallersModule(int skip)
3545 {
3546     CONTRACTL
3547     {
3548         THROWS;
3549         GC_TRIGGERS;
3550         MODE_ANY;
3551         INJECT_FAULT(COMPlusThrowOM(););
3552     }
3553     CONTRACTL_END;
3554
3555     GCX_COOP();
3556
3557     CallersData cdata;
3558     ZeroMemory(&cdata, sizeof(CallersData));
3559     cdata.skip = skip;
3560
3561     StackWalkFunctions(GetThread(), CallersMethodCallback, &cdata);
3562
3563     if(cdata.pMethod)
3564         return cdata.pMethod->GetModule();
3565     else
3566         return NULL;
3567 }
3568
3569 /*private static*/
3570 StackWalkAction SystemDomain::CallersMethodCallbackWithStackMark(CrawlFrame* pCf, VOID* data)
3571 {
3572     CONTRACTL
3573     {
3574         THROWS;
3575         GC_TRIGGERS;
3576         MODE_COOPERATIVE;
3577         SO_INTOLERANT;
3578         INJECT_FAULT(COMPlusThrowOM(););
3579     }
3580     CONTRACTL_END;
3581
3582
3583     MethodDesc *pFunc = pCf->GetFunction();
3584
3585     /* We asked to be called back only for functions */
3586     _ASSERTE(pFunc);
3587
3588     CallersDataWithStackMark* pCaller = (CallersDataWithStackMark*) data;
3589     if (pCaller->stackMark)
3590     {
3591         if (!pCf->IsInCalleesFrames(pCaller->stackMark))
3592         {
3593             // save the current in case it is the one we want
3594             pCaller->pPrevMethod = pFunc;
3595             pCaller->pAppDomain = pCf->GetAppDomain();
3596             return SWA_CONTINUE;
3597         }
3598
3599         // LookForMe stack crawl marks needn't worry about reflection or
3600         // remoting frames on the stack. Each frame above (newer than) the
3601         // target will be captured by the logic above. Once we transition to
3602         // finding the stack mark below the AofRA, we know that we hit the
3603         // target last time round and immediately exit with the cached result.
3604
3605         if (*(pCaller->stackMark) == LookForMe)
3606         {
3607             pCaller->pFoundMethod = pCaller->pPrevMethod;
3608             return SWA_ABORT;
3609         }
3610     }
3611
3612     // Skip reflection and remoting frames that could lie between a stack marked
3613     // method and its true caller (or that caller and its own caller). These
3614     // frames are infrastructure and logically transparent to the stack crawling
3615     // algorithm.
3616
3617     // Skipping remoting frames. We always skip entire client to server spans
3618     // (though we see them in the order server then client during a stack crawl
3619     // obviously).
3620
3621     // We spot the server dispatcher end because all calls are dispatched
3622     // through a single method: StackBuilderSink._PrivateProcessMessage.
3623
3624     Frame* frame = pCf->GetFrame();
3625     _ASSERTE(pCf->IsFrameless() || frame);
3626
3627
3628
3629     // Skipping reflection frames. We don't need to be quite as exhaustive here
3630     // as the security or reflection stack walking code since we know this logic
3631     // is only invoked for selected methods in mscorlib itself. So we're
3632     // reasonably sure we won't have any sensitive methods late bound invoked on
3633     // constructors, properties or events. This leaves being invoked via
3634     // MethodInfo, Type or Delegate (and depending on which invoke overload is
3635     // being used, several different reflection classes may be involved).
3636
3637     g_IBCLogger.LogMethodDescAccess(pFunc);
3638
3639     if (SystemDomain::IsReflectionInvocationMethod(pFunc))
3640         return SWA_CONTINUE;
3641
3642     if (frame && frame->GetFrameType() == Frame::TYPE_MULTICAST)
3643     {
3644         // This must be either a secure delegate frame or a true multicast delegate invocation.
3645
3646         _ASSERTE(pFunc->GetMethodTable()->IsDelegate());
3647
3648         DELEGATEREF del = (DELEGATEREF)((SecureDelegateFrame*)frame)->GetThis(); // This can throw.
3649
3650         if (COMDelegate::IsSecureDelegate(del))
3651         {
3652             if (del->IsWrapperDelegate())
3653             {
3654                 // On ARM, we use secure delegate infrastructure to preserve R4 register.
3655                 return SWA_CONTINUE;
3656             }
3657             // For a secure delegate frame, we should return the delegate creator instead
3658             // of the delegate method itself.
3659             pFunc = (MethodDesc*) del->GetMethodPtrAux();
3660         }
3661         else
3662         {
3663             _ASSERTE(COMDelegate::IsTrueMulticastDelegate(del));
3664             return SWA_CONTINUE;
3665         }
3666     }
3667
3668     // Return the first non-reflection/remoting frame if no stack mark was
3669     // supplied.
3670     if (!pCaller->stackMark)
3671     {
3672         pCaller->pFoundMethod = pFunc;
3673         pCaller->pAppDomain = pCf->GetAppDomain();
3674         return SWA_ABORT;
3675     }
3676
3677     // If we got here, we must already be in the frame containing the stack mark and we are not looking for "me".
3678     _ASSERTE(pCaller->stackMark &&
3679              pCf->IsInCalleesFrames(pCaller->stackMark) &&
3680              *(pCaller->stackMark) != LookForMe);
3681
3682     // When looking for caller's caller, we delay returning results for another
3683     // round (the way this is structured, we will still be able to skip
3684     // reflection and remoting frames between the caller and the caller's
3685     // caller).
3686
3687     if ((*(pCaller->stackMark) == LookForMyCallersCaller) &&
3688         (pCaller->pFoundMethod == NULL))
3689     {
3690         pCaller->pFoundMethod = pFunc;
3691         return SWA_CONTINUE;
3692     }
3693
3694     // If remoting is not available, we only set the caller if the crawlframe is from the same domain.
3695     // Why? Because if the callerdomain is different from current domain,
3696     // there have to be interop/native frames in between.
3697     // For example, in the CORECLR, if we find the caller to be in a different domain, then the
3698     // call into reflection is due to an unmanaged call into mscorlib. For that
3699     // case, the caller really is an INTEROP method.
3700     // In general, if the caller is INTEROP, we set the caller/callerdomain to be NULL
3701     // (To be precise: they are already NULL and we don't change them).
3702     if (pCf->GetAppDomain() == GetAppDomain())
3703     // We must either be looking for the caller, or the caller's caller when
3704     // we've already found the caller (we used a non-null value in pFoundMethod
3705     // simply as a flag, the correct method to return in both case is the
3706     // current method).
3707     {
3708         pCaller->pFoundMethod = pFunc;
3709         pCaller->pAppDomain = pCf->GetAppDomain();
3710     }
3711
3712     return SWA_ABORT;
3713 }
3714
3715 /*private static*/
3716 StackWalkAction SystemDomain::CallersMethodCallback(CrawlFrame* pCf, VOID* data)
3717 {
3718     LIMITED_METHOD_CONTRACT;
3719     STATIC_CONTRACT_SO_TOLERANT;
3720     MethodDesc *pFunc = pCf->GetFunction();
3721
3722     /* We asked to be called back only for functions */
3723     _ASSERTE(pFunc);
3724
3725     CallersData* pCaller = (CallersData*) data;
3726     if(pCaller->skip == 0) {
3727         pCaller->pMethod = pFunc;
3728         return SWA_ABORT;
3729     }
3730     else {
3731         pCaller->skip--;
3732         return SWA_CONTINUE;
3733     }
3734
3735 }
3736 #endif // CROSSGEN_COMPILE
3737
3738 #ifdef CROSSGEN_COMPILE
3739 // defined in compile.cpp
3740 extern CompilationDomain * theDomain;
3741 #endif
3742
3743 void SystemDomain::CreateDefaultDomain()
3744 {
3745     STANDARD_VM_CONTRACT;
3746
3747 #ifdef CROSSGEN_COMPILE
3748     AppDomainRefHolder pDomain(theDomain);
3749 #else
3750     AppDomainRefHolder pDomain(new AppDomain());
3751 #endif
3752
3753     SystemDomain::LockHolder lh;
3754     pDomain->Init();
3755
3756     // need to make this assignment here since we'll be releasing
3757     // the lock before calling AddDomain. So any other thread
3758     // grabbing this lock after we release it will find that
3759     // the COM Domain has already been created
3760     m_pDefaultDomain = pDomain;
3761     _ASSERTE (pDomain->GetId().m_dwId == DefaultADID);
3762
3763     // allocate a Virtual Call Stub Manager for the default domain
3764     m_pDefaultDomain->InitVSD();
3765
3766     pDomain->SetStage(AppDomain::STAGE_OPEN);
3767     pDomain.SuppressRelease();
3768
3769     LOG((LF_CLASSLOADER | LF_CORDB,
3770          LL_INFO10,
3771          "Created default domain at %p\n", m_pDefaultDomain));
3772 }
3773
3774 #ifdef DEBUGGING_SUPPORTED
3775
3776 void SystemDomain::PublishAppDomainAndInformDebugger (AppDomain *pDomain)
3777 {
3778     CONTRACTL
3779     {
3780         if(!g_fEEInit) {THROWS;} else {DISABLED(NOTHROW);};
3781         if(!g_fEEInit) {GC_TRIGGERS;} else {DISABLED(GC_NOTRIGGER);};
3782         MODE_ANY;
3783     }
3784     CONTRACTL_END;
3785
3786     LOG((LF_CORDB, LL_INFO100, "SD::PADAID: Adding 0x%x\n", pDomain));
3787
3788     // Call the publisher API to add this appdomain entry to the list
3789     // The publisher will handle failures, so we don't care if this succeeds or fails.
3790     if (g_pDebugInterface != NULL)
3791     {
3792         g_pDebugInterface->AddAppDomainToIPC(pDomain);
3793     }
3794 }
3795
3796 #endif // DEBUGGING_SUPPORTED
3797
3798 void SystemDomain::AddDomain(AppDomain* pDomain)
3799 {
3800     CONTRACTL
3801     {
3802         NOTHROW;
3803         MODE_ANY;
3804         GC_TRIGGERS;
3805         PRECONDITION(CheckPointer((pDomain)));
3806     }
3807     CONTRACTL_END;
3808
3809     {
3810         LockHolder lh;
3811
3812         _ASSERTE (pDomain->m_Stage != AppDomain::STAGE_CREATING);
3813         if (pDomain->m_Stage == AppDomain::STAGE_READYFORMANAGEDCODE ||
3814             pDomain->m_Stage == AppDomain::STAGE_ACTIVE)
3815         {
3816             pDomain->SetStage(AppDomain::STAGE_OPEN);
3817             IncrementNumAppDomains(); // Maintain a count of app domains added to the list.
3818         }
3819     }
3820
3821     // Note that if you add another path that can reach here without calling
3822     // PublishAppDomainAndInformDebugger, then you should go back & make sure
3823     // that PADAID gets called.  Right after this call, if not sooner.
3824     LOG((LF_CORDB, LL_INFO1000, "SD::AD:Would have added domain here! 0x%x\n",
3825         pDomain));
3826 }
3827
3828 BOOL SystemDomain::RemoveDomain(AppDomain* pDomain)
3829 {
3830     CONTRACTL
3831     {
3832         NOTHROW;
3833         GC_TRIGGERS;
3834         MODE_ANY;
3835         PRECONDITION(CheckPointer(pDomain));
3836         PRECONDITION(!pDomain->IsDefaultDomain());
3837     }
3838     CONTRACTL_END;
3839
3840     // You can not remove the default domain.
3841
3842
3843     if (!pDomain->IsActive())
3844         return FALSE;
3845
3846     pDomain->Release();
3847
3848     return TRUE;
3849 }
3850
3851
3852 #ifdef PROFILING_SUPPORTED
3853 void SystemDomain::NotifyProfilerStartup()
3854 {
3855     CONTRACTL
3856     {
3857         NOTHROW;
3858         GC_TRIGGERS;
3859         MODE_PREEMPTIVE;
3860     }
3861     CONTRACTL_END;
3862
3863     {
3864         BEGIN_PIN_PROFILER(CORProfilerTrackAppDomainLoads());
3865         _ASSERTE(System());
3866         g_profControlBlock.pProfInterface->AppDomainCreationStarted((AppDomainID) System());
3867         END_PIN_PROFILER();
3868     }
3869
3870     {
3871         BEGIN_PIN_PROFILER(CORProfilerTrackAppDomainLoads());
3872         _ASSERTE(System());
3873         g_profControlBlock.pProfInterface->AppDomainCreationFinished((AppDomainID) System(), S_OK);
3874         END_PIN_PROFILER();
3875     }
3876
3877     {
3878         BEGIN_PIN_PROFILER(CORProfilerTrackAppDomainLoads());
3879         _ASSERTE(System()->DefaultDomain());
3880         g_profControlBlock.pProfInterface->AppDomainCreationStarted((AppDomainID) System()->DefaultDomain());
3881         END_PIN_PROFILER();
3882     }
3883
3884     {
3885         BEGIN_PIN_PROFILER(CORProfilerTrackAppDomainLoads());
3886         _ASSERTE(System()->DefaultDomain());
3887         g_profControlBlock.pProfInterface->AppDomainCreationFinished((AppDomainID) System()->DefaultDomain(), S_OK);
3888         END_PIN_PROFILER();
3889     }
3890
3891     {
3892         BEGIN_PIN_PROFILER(CORProfilerTrackAppDomainLoads());
3893         _ASSERTE(SharedDomain::GetDomain());
3894         g_profControlBlock.pProfInterface->AppDomainCreationStarted((AppDomainID) SharedDomain::GetDomain());
3895         END_PIN_PROFILER();
3896     }
3897
3898     {
3899         BEGIN_PIN_PROFILER(CORProfilerTrackAppDomainLoads());
3900         _ASSERTE(SharedDomain::GetDomain());
3901         g_profControlBlock.pProfInterface->AppDomainCreationFinished((AppDomainID) SharedDomain::GetDomain(), S_OK);
3902         END_PIN_PROFILER();
3903     }
3904 }
3905
3906 HRESULT SystemDomain::NotifyProfilerShutdown()
3907 {
3908     CONTRACTL
3909     {
3910         NOTHROW;
3911         GC_TRIGGERS;
3912         MODE_PREEMPTIVE;
3913     }
3914     CONTRACTL_END;
3915
3916     {
3917         BEGIN_PIN_PROFILER(CORProfilerTrackAppDomainLoads());
3918         _ASSERTE(System());
3919         g_profControlBlock.pProfInterface->AppDomainShutdownStarted((AppDomainID) System());
3920         END_PIN_PROFILER();
3921     }
3922
3923     {
3924         BEGIN_PIN_PROFILER(CORProfilerTrackAppDomainLoads());
3925         _ASSERTE(System());
3926         g_profControlBlock.pProfInterface->AppDomainShutdownFinished((AppDomainID) System(), S_OK);
3927         END_PIN_PROFILER();
3928     }
3929
3930     {
3931         BEGIN_PIN_PROFILER(CORProfilerTrackAppDomainLoads());
3932         _ASSERTE(System()->DefaultDomain());
3933         g_profControlBlock.pProfInterface->AppDomainShutdownStarted((AppDomainID) System()->DefaultDomain());
3934         END_PIN_PROFILER();
3935     }
3936
3937     {
3938         BEGIN_PIN_PROFILER(CORProfilerTrackAppDomainLoads());
3939         _ASSERTE(System()->DefaultDomain());
3940         g_profControlBlock.pProfInterface->AppDomainShutdownFinished((AppDomainID) System()->DefaultDomain(), S_OK);
3941         END_PIN_PROFILER();
3942     }
3943     return (S_OK);
3944 }
3945 #endif // PROFILING_SUPPORTED
3946
3947
3948 #ifdef _DEBUG
3949 struct AppDomain::ThreadTrackInfo {
3950     Thread *pThread;
3951     CDynArray<Frame *> frameStack;
3952 };
3953 #endif // _DEBUG
3954
3955 AppDomain::AppDomain()
3956 {
3957     // initialize fields so the appdomain can be safely destructed
3958     // shouldn't call anything that can fail here - use ::Init instead
3959     CONTRACTL
3960     {
3961         THROWS;
3962         GC_TRIGGERS;
3963         MODE_ANY;
3964         FORBID_FAULT;
3965     }
3966     CONTRACTL_END;
3967
3968     m_cRef=1;
3969     m_pNextInDelayedUnloadList = NULL;
3970     m_fRudeUnload = FALSE;
3971     m_pUnloadRequestThread = NULL;
3972     m_ADUnloadSink=NULL;
3973
3974
3975     // Initialize Shared state. Assemblies are loaded
3976     // into each domain by default.
3977 #ifdef FEATURE_LOADER_OPTIMIZATION
3978     m_SharePolicy = SHARE_POLICY_UNSPECIFIED;
3979 #endif
3980
3981     m_pRootAssembly = NULL;
3982
3983     m_pwDynamicDir = NULL;
3984
3985     m_dwFlags = 0;
3986     m_pDefaultContext = NULL;
3987 #ifdef FEATURE_COMINTEROP
3988     m_pComCallWrapperCache = NULL;
3989     m_pRCWCache = NULL;
3990     m_pRCWRefCache = NULL;
3991     m_pLicenseInteropHelperMT = NULL;
3992     m_COMorRemotingFlag = COMorRemoting_NotInitialized;
3993     memset(m_rpCLRTypes, 0, sizeof(m_rpCLRTypes));
3994 #endif // FEATURE_COMINTEROP
3995
3996     m_pUMEntryThunkCache = NULL;
3997
3998     m_pAsyncPool = NULL;
3999     m_handleStore = NULL;
4000
4001     m_ExposedObject = NULL;
4002     m_pComIPForExposedObject = NULL;
4003
4004  #ifdef _DEBUG
4005     m_pThreadTrackInfoList = NULL;
4006     m_TrackSpinLock = 0;
4007     m_Assemblies.Debug_SetAppDomain(this);
4008 #endif // _DEBUG
4009
4010     m_dwThreadEnterCount = 0;
4011     m_dwThreadsStillInAppDomain = (ULONG)-1;
4012
4013 #ifdef FEATURE_COMINTEROP
4014     m_pRefDispIDCache = NULL;
4015     m_hndMissing = NULL;
4016 #endif
4017
4018     m_pRefClassFactHash = NULL;
4019     m_anonymouslyHostedDynamicMethodsAssembly = NULL;
4020
4021     m_ReversePInvokeCanEnter=TRUE;
4022     m_ForceTrivialWaitOperations = false;
4023     m_Stage=STAGE_CREATING;
4024
4025     m_bForceGCOnUnload=FALSE;
4026     m_bUnloadingFromUnloadEvent=FALSE;
4027 #ifdef _DEBUG
4028     m_dwIterHolders=0;
4029     m_dwRefTakers=0;
4030     m_dwCreationHolders=0;
4031 #endif
4032
4033 #ifdef FEATURE_APPDOMAIN_RESOURCE_MONITORING
4034     m_ullTotalProcessorUsage = 0;
4035     m_pullAllocBytes = NULL;
4036     m_pullSurvivedBytes = NULL;
4037 #endif //FEATURE_APPDOMAIN_RESOURCE_MONITORING
4038
4039 #ifdef FEATURE_TYPEEQUIVALENCE
4040     m_pTypeEquivalenceTable = NULL;
4041 #endif // FEATURE_TYPEEQUIVALENCE
4042
4043 #ifdef FEATURE_COMINTEROP
4044     m_pNameToTypeMap = NULL;
4045     m_vNameToTypeMapVersion = 0;
4046     m_nEpoch = 0;
4047     m_pWinRTFactoryCache = NULL;
4048 #endif // FEATURE_COMINTEROP
4049
4050 #ifdef FEATURE_PREJIT
4051     m_pDomainFileWithNativeImageList = NULL;
4052 #endif
4053
4054     m_fIsBindingModelLocked.Store(FALSE);
4055
4056 } // AppDomain::AppDomain
4057
4058 AppDomain::~AppDomain()
4059 {
4060     CONTRACTL
4061     {
4062         NOTHROW;
4063         GC_TRIGGERS;
4064         MODE_ANY;
4065     }
4066     CONTRACTL_END;
4067
4068 #ifndef CROSSGEN_COMPILE
4069
4070     _ASSERTE(m_dwCreationHolders == 0);
4071
4072     // release the TPIndex.  note that since TPIndex values are recycled the TPIndex
4073     // can only be released once all threads in the AppDomain have exited.
4074     if (GetTPIndex().m_dwIndex != 0)
4075         PerAppDomainTPCountList::ResetAppDomainIndex(GetTPIndex());
4076
4077     if (m_dwId.m_dwId!=0)
4078         SystemDomain::ReleaseAppDomainId(m_dwId);
4079
4080     m_AssemblyCache.Clear();
4081
4082     if (m_ADUnloadSink)
4083         m_ADUnloadSink->Release();
4084
4085     if(!g_fEEInit)
4086         Terminate();
4087
4088
4089
4090
4091 #ifdef FEATURE_COMINTEROP
4092     if (m_pNameToTypeMap != nullptr)
4093     {
4094         delete m_pNameToTypeMap;
4095         m_pNameToTypeMap = nullptr;
4096     }
4097     if (m_pWinRTFactoryCache != nullptr)
4098     {
4099         delete m_pWinRTFactoryCache;
4100         m_pWinRTFactoryCache = nullptr;
4101     }
4102 #endif //FEATURE_COMINTEROP
4103
4104 #ifdef _DEBUG
4105     // If we were tracking thread AD transitions, cleanup the list on shutdown
4106     if (m_pThreadTrackInfoList)
4107     {
4108         while (m_pThreadTrackInfoList->Count() > 0)
4109         {
4110             // Get the very last element
4111             ThreadTrackInfo *pElem = *(m_pThreadTrackInfoList->Get(m_pThreadTrackInfoList->Count() - 1));
4112             _ASSERTE(pElem);
4113
4114             // Free the memory
4115             delete pElem;
4116
4117             // Remove pointer entry from the list
4118             m_pThreadTrackInfoList->Delete(m_pThreadTrackInfoList->Count() - 1);
4119         }
4120
4121         // Now delete the list itself
4122         delete m_pThreadTrackInfoList;
4123         m_pThreadTrackInfoList = NULL;
4124     }
4125 #endif // _DEBUG
4126
4127 #endif // CROSSGEN_COMPILE
4128 }
4129
4130 //*****************************************************************************
4131 //*****************************************************************************
4132 //*****************************************************************************
4133 void AppDomain::Init()
4134 {
4135     CONTRACTL
4136     {
4137         STANDARD_VM_CHECK;
4138         PRECONDITION(SystemDomain::IsUnderDomainLock());
4139     }
4140     CONTRACTL_END;
4141
4142     m_pDelayedLoaderAllocatorUnloadList = NULL;
4143
4144     SetStage( STAGE_CREATING);
4145
4146
4147     // The lock is taken also during stack walking (GC or profiler)
4148     //  - To prevent deadlock with GC thread, we cannot trigger GC while holding the lock
4149     //  - To prevent deadlock with profiler thread, we cannot allow thread suspension
4150     m_crstHostAssemblyMap.Init(
4151         CrstHostAssemblyMap,
4152         (CrstFlags)(CRST_GC_NOTRIGGER_WHEN_TAKEN
4153                     | CRST_DEBUGGER_THREAD
4154                     INDEBUG(| CRST_DEBUG_ONLY_CHECK_FORBID_SUSPEND_THREAD)));
4155     m_crstHostAssemblyMapAdd.Init(CrstHostAssemblyMapAdd);
4156
4157     m_dwId = SystemDomain::GetNewAppDomainId(this);
4158
4159     m_LoaderAllocator.Init(this);
4160
4161 #ifndef CROSSGEN_COMPILE
4162     //Allocate the threadpool entry before the appdomin id list. Otherwise,
4163     //the thread pool list will be out of sync if insertion of id in
4164     //the appdomain fails.
4165     m_tpIndex = PerAppDomainTPCountList::AddNewTPIndex();
4166 #endif // CROSSGEN_COMPILE
4167
4168     m_dwIndex = SystemDomain::GetNewAppDomainIndex(this);
4169
4170 #ifndef CROSSGEN_COMPILE
4171     PerAppDomainTPCountList::SetAppDomainId(m_tpIndex, m_dwId);
4172
4173     m_ADUnloadSink=new ADUnloadSink();
4174 #endif
4175
4176     BaseDomain::Init();
4177
4178     // Set up the IL stub cache
4179     m_ILStubCache.Init(GetLoaderAllocator()->GetHighFrequencyHeap());
4180
4181 // Set up the binding caches
4182     m_AssemblyCache.Init(&m_DomainCacheCrst, GetHighFrequencyHeap());
4183     m_UnmanagedCache.InitializeTable(this, &m_DomainCacheCrst);
4184
4185     m_MemoryPressure = 0;
4186
4187     m_sDomainLocalBlock.Init(this);
4188
4189 #ifndef CROSSGEN_COMPILE
4190
4191 #ifdef FEATURE_APPDOMAIN_RESOURCE_MONITORING
4192     // NOTE: it's important that we initialize ARM data structures before calling
4193     // Ref_CreateHandleTableBucket, this is because AD::Init() can race with GC
4194     // and once we add ourselves to the handle table map the GC can start walking
4195     // our handles and calling AD::RecordSurvivedBytes() which touches ARM data.
4196     if (GCHeapUtilities::IsServerHeap())
4197         m_dwNumHeaps = CPUGroupInfo::CanEnableGCCPUGroups() ?
4198                            CPUGroupInfo::GetNumActiveProcessors() :
4199                            GetCurrentProcessCpuCount();
4200     else
4201         m_dwNumHeaps = 1;
4202     m_pullAllocBytes = new ULONGLONG [m_dwNumHeaps * ARM_CACHE_LINE_SIZE_ULL];
4203     m_pullSurvivedBytes = new ULONGLONG [m_dwNumHeaps * ARM_CACHE_LINE_SIZE_ULL];
4204     for (DWORD i = 0; i < m_dwNumHeaps; i++)
4205     {
4206         m_pullAllocBytes[i * ARM_CACHE_LINE_SIZE_ULL] = 0;
4207         m_pullSurvivedBytes[i * ARM_CACHE_LINE_SIZE_ULL] = 0;
4208     }
4209     m_ullLastEtwAllocBytes = 0;
4210 #endif //FEATURE_APPDOMAIN_RESOURCE_MONITORING
4211
4212     // Default domain reuses the handletablemap that was created during EEStartup since
4213     // default domain cannot be unloaded.
4214     if (GetId().m_dwId == DefaultADID)
4215     {
4216         m_handleStore = GCHandleUtilities::GetGCHandleManager()->GetGlobalHandleStore();
4217     }
4218     else
4219     {
4220         m_handleStore = GCHandleUtilities::GetGCHandleManager()->CreateHandleStore((void*)(uintptr_t)m_dwIndex.m_dwIndex);
4221     }
4222
4223     if (!m_handleStore)
4224     {
4225         COMPlusThrowOM();
4226     }
4227
4228 #endif // CROSSGEN_COMPILE
4229
4230 #ifdef FEATURE_TYPEEQUIVALENCE
4231     m_TypeEquivalenceCrst.Init(CrstTypeEquivalenceMap);
4232 #endif
4233
4234     m_ReflectionCrst.Init(CrstReflection, CRST_UNSAFE_ANYMODE);
4235     m_RefClassFactCrst.Init(CrstClassFactInfoHash);
4236
4237     {
4238         LockOwner lock = {&m_DomainCrst, IsOwnerOfCrst};
4239         m_clsidHash.Init(0,&CompareCLSID,true, &lock); // init hash table
4240     }
4241
4242     SetStage(STAGE_READYFORMANAGEDCODE);
4243
4244 #ifndef CROSSGEN_COMPILE
4245     m_pDefaultContext = new Context(this);
4246
4247     m_ExposedObject = CreateHandle(NULL);
4248
4249     // Create the Application Security Descriptor
4250
4251     COUNTER_ONLY(GetPerfCounters().m_Loading.cAppDomains++);
4252
4253 #ifdef FEATURE_COMINTEROP
4254     if (!AppX::IsAppXProcess())
4255     {
4256     }
4257 #endif //FEATURE_COMINTEROP
4258
4259 #ifdef FEATURE_TIERED_COMPILATION
4260     m_tieredCompilationManager.Init(GetId());
4261 #endif
4262 #endif // CROSSGEN_COMPILE
4263 } // AppDomain::Init
4264
4265
4266 /*********************************************************************/
4267
4268 BOOL AppDomain::IsCompilationDomain()
4269 {
4270     LIMITED_METHOD_CONTRACT;
4271
4272     BOOL isCompilationDomain = (m_dwFlags & COMPILATION_DOMAIN) != 0;
4273 #ifdef FEATURE_PREJIT
4274     _ASSERTE(!isCompilationDomain ||
4275              (IsCompilationProcess() && IsPassiveDomain()));
4276 #endif // FEATURE_PREJIT
4277     return isCompilationDomain;
4278 }
4279
4280 #ifndef CROSSGEN_COMPILE
4281
4282 extern int g_fADUnloadWorkerOK;
4283
4284 // Notes:
4285 //   This helper will send the AppDomain creation notifications for profiler / debugger.
4286 //   If it throws, its backout code will also send a notification.
4287 //   If it succeeds, then we still need to send a AppDomainCreateFinished notification.
4288 void AppDomain::CreateUnmanagedObject(AppDomainCreationHolder<AppDomain>& pDomain)
4289 {
4290     CONTRACTL
4291     {
4292         THROWS;
4293         MODE_COOPERATIVE;
4294         GC_TRIGGERS;
4295         INJECT_FAULT(COMPlusThrowOM(););
4296     }
4297     CONTRACTL_END;
4298
4299     GCX_PREEMP();
4300
4301     pDomain.Assign(new AppDomain());
4302     if (g_fADUnloadWorkerOK<0)
4303     {
4304         AppDomain::CreateADUnloadWorker();
4305     }
4306
4307     //@todo: B#25921
4308     // We addref Appdomain object here and notify a profiler that appdomain
4309     // creation has started, then return to managed code which will  call
4310     // the function that releases the appdomain and notifies a profiler that we finished
4311     // creating the appdomain. If an exception is raised while we're in that managed code
4312     // we will leak memory and the profiler will not be notified about the failure
4313
4314 #ifdef PROFILING_SUPPORTED
4315     // Signal profile if present.
4316     {
4317         BEGIN_PIN_PROFILER(CORProfilerTrackAppDomainLoads());
4318         g_profControlBlock.pProfInterface->AppDomainCreationStarted((AppDomainID) (AppDomain*) pDomain);
4319         END_PIN_PROFILER();
4320     }
4321     EX_TRY
4322 #endif // PROFILING_SUPPORTED
4323     {
4324         {
4325             SystemDomain::LockHolder lh;
4326             pDomain->Init();
4327             // allocate a Virtual Call Stub Manager for this domain
4328             pDomain->InitVSD();
4329         }
4330
4331         pDomain->SetCanUnload();    // by default can unload any domain
4332
4333         #ifdef DEBUGGING_SUPPORTED
4334         // Notify the debugger here, before the thread transitions into the
4335         // AD to finish the setup, and before any assemblies are loaded into it.
4336         SystemDomain::PublishAppDomainAndInformDebugger(pDomain);
4337         #endif // DEBUGGING_SUPPORTED
4338
4339         STRESS_LOG2 (LF_APPDOMAIN, LL_INFO100, "Create domain [%d] %p\n", pDomain->GetId().m_dwId, (AppDomain*)pDomain);
4340         pDomain->LoadSystemAssemblies();
4341         pDomain->SetupSharedStatics();
4342
4343         pDomain->SetStage(AppDomain::STAGE_ACTIVE);
4344     }
4345 #ifdef PROFILING_SUPPORTED
4346     EX_HOOK
4347     {
4348         // Need the first assembly loaded in to get any data on an app domain.
4349         {
4350             BEGIN_PIN_PROFILER(CORProfilerTrackAppDomainLoads());
4351             g_profControlBlock.pProfInterface->AppDomainCreationFinished((AppDomainID)(AppDomain*) pDomain, GET_EXCEPTION()->GetHR());
4352             END_PIN_PROFILER();
4353         }
4354     }
4355     EX_END_HOOK;
4356
4357     // On success, caller must still send the AppDomainCreationFinished notification.
4358 #endif // PROFILING_SUPPORTED
4359 }
4360
4361 void AppDomain::Stop()
4362 {
4363     CONTRACTL
4364     {
4365         NOTHROW;
4366         MODE_ANY;
4367         GC_TRIGGERS;
4368     }
4369     CONTRACTL_END;
4370
4371 #ifdef FEATURE_MULTICOREJIT
4372     GetMulticoreJitManager().StopProfile(true);
4373 #endif
4374
4375     // Set the unloaded flag before notifying the debugger
4376     GetLoaderAllocator()->SetIsUnloaded();
4377
4378 #ifdef DEBUGGING_SUPPORTED
4379     if (IsDebuggerAttached())
4380         NotifyDebuggerUnload();
4381 #endif // DEBUGGING_SUPPORTED
4382
4383     m_pRootAssembly = NULL; // This assembly is in the assembly list;
4384
4385 #ifdef DEBUGGING_SUPPORTED
4386     if (NULL != g_pDebugInterface)
4387     {
4388         // Call the publisher API to delete this appdomain entry from the list
4389         CONTRACT_VIOLATION(ThrowsViolation);
4390         g_pDebugInterface->RemoveAppDomainFromIPC (this);
4391     }
4392 #endif // DEBUGGING_SUPPORTED
4393 }
4394
4395 void AppDomain::Terminate()
4396 {
4397     CONTRACTL
4398     {
4399         NOTHROW;
4400         GC_TRIGGERS;
4401         MODE_ANY;
4402     }
4403     CONTRACTL_END;
4404
4405     GCX_PREEMP();
4406
4407
4408     _ASSERTE(m_dwThreadEnterCount == 0 || IsDefaultDomain());
4409
4410     if (m_pComIPForExposedObject)
4411     {
4412         m_pComIPForExposedObject->Release();
4413         m_pComIPForExposedObject = NULL;
4414     }
4415
4416     delete m_pDefaultContext;
4417     m_pDefaultContext = NULL;
4418
4419     if (m_pUMEntryThunkCache)
4420     {
4421         delete m_pUMEntryThunkCache;
4422         m_pUMEntryThunkCache = NULL;
4423     }
4424
4425 #ifdef FEATURE_COMINTEROP
4426     if (m_pRCWCache)
4427     {
4428         delete m_pRCWCache;
4429         m_pRCWCache = NULL;
4430     }
4431
4432     if (m_pRCWRefCache)
4433     {
4434         delete m_pRCWRefCache;
4435         m_pRCWRefCache = NULL;
4436     }
4437
4438     if (m_pComCallWrapperCache)
4439     {
4440         m_pComCallWrapperCache->Neuter();
4441         m_pComCallWrapperCache->Release();
4442     }
4443
4444     // if the above released the wrapper cache, then it will call back and reset our
4445     // m_pComCallWrapperCache to null. If not null, then need to set it's domain pointer to
4446     // null.
4447     if (! m_pComCallWrapperCache)
4448     {
4449         LOG((LF_APPDOMAIN, LL_INFO10, "AppDomain::Terminate ComCallWrapperCache released\n"));
4450     }
4451 #ifdef _DEBUG
4452     else
4453     {
4454         m_pComCallWrapperCache = NULL;
4455         LOG((LF_APPDOMAIN, LL_INFO10, "AppDomain::Terminate ComCallWrapperCache not released\n"));
4456     }
4457 #endif // _DEBUG
4458
4459 #endif // FEATURE_COMINTEROP
4460
4461
4462     if (!IsAtProcessExit())
4463     {
4464         // if we're not shutting down everything then clean up the string literals associated
4465         // with this appdomain -- note that is no longer needs to happen while suspended
4466         // because the appropriate locks are taken in the GlobalStringLiteralMap
4467         // this is important as this locks have a higher lock number than does the
4468         // thread-store lock which is taken when we suspend.
4469         GetLoaderAllocator()->CleanupStringLiteralMap();
4470
4471         // Suspend the EE to do some clean up that can only occur
4472         // while no threads are running.
4473         GCX_COOP (); // SuspendEE may require current thread to be in Coop mode
4474         ThreadSuspend::SuspendEE(ThreadSuspend::SUSPEND_FOR_APPDOMAIN_SHUTDOWN);
4475     }
4476
4477     // Note that this must be performed before restarting the EE. It will clean
4478     // the cache and prevent others from using stale cache entries.
4479     //@TODO: Would be nice to get this back to BaseDomain, but need larger fix for that.
4480     // NOTE: Must have the runtime suspended to unlink managers
4481     // NOTE: May be NULL due to OOM during initialization. Can skip in that case.
4482     GetLoaderAllocator()->UninitVirtualCallStubManager();
4483     MethodTable::ClearMethodDataCache();
4484     ClearJitGenericHandleCache(this);
4485
4486     // @TODO s_TPMethodTableCrst prevents us from from keeping the whole
4487     // assembly shutdown logic here. See if we can do better in the next milestone
4488 #ifdef  FEATURE_PREJIT
4489     DeleteNativeCodeRanges();
4490 #endif
4491
4492     if (!IsAtProcessExit())
4493     {
4494         // Resume the EE.
4495         ThreadSuspend::RestartEE(FALSE, TRUE);
4496     }
4497
4498     ShutdownAssemblies();
4499     ShutdownNativeDllSearchDirectories();
4500
4501     if (m_pRefClassFactHash)
4502     {
4503         m_pRefClassFactHash->Destroy();
4504         // storage for m_pRefClassFactHash itself is allocated on the loader heap
4505     }
4506
4507 #ifdef FEATURE_TYPEEQUIVALENCE
4508     m_TypeEquivalenceCrst.Destroy();
4509 #endif
4510
4511     m_ReflectionCrst.Destroy();
4512     m_RefClassFactCrst.Destroy();
4513
4514     m_LoaderAllocator.Terminate();
4515
4516     BaseDomain::Terminate();
4517
4518     if (m_handleStore)
4519     {
4520         GCHandleUtilities::GetGCHandleManager()->DestroyHandleStore(m_handleStore);
4521         m_handleStore = NULL;
4522     }
4523
4524 #ifdef FEATURE_APPDOMAIN_RESOURCE_MONITORING
4525     if (m_pullAllocBytes)
4526     {
4527         delete [] m_pullAllocBytes;
4528     }
4529     if (m_pullSurvivedBytes)
4530     {
4531         delete [] m_pullSurvivedBytes;
4532     }
4533 #endif //FEATURE_APPDOMAIN_RESOURCE_MONITORING
4534
4535     if(m_dwIndex.m_dwIndex != 0)
4536         SystemDomain::ReleaseAppDomainIndex(m_dwIndex);
4537 } // AppDomain::Terminate
4538
4539 void AppDomain::CloseDomain()
4540 {
4541     CONTRACTL
4542     {
4543         NOTHROW;
4544         GC_TRIGGERS;
4545         MODE_ANY;
4546     }
4547     CONTRACTL_END;
4548
4549
4550     BOOL bADRemoved=FALSE;;
4551
4552     AddRef();  // Hold a reference
4553     AppDomainRefHolder AdHolder(this);
4554     {
4555         SystemDomain::LockHolder lh;
4556
4557         SystemDomain::System()->DecrementNumAppDomains(); // Maintain a count of app domains added to the list.
4558         bADRemoved = SystemDomain::System()->RemoveDomain(this);
4559     }
4560
4561     if(bADRemoved)
4562         Stop();
4563 }
4564
4565 /*********************************************************************/
4566
4567 struct GetExposedObject_Args
4568 {
4569     AppDomain *pDomain;
4570     OBJECTREF *ref;
4571 };
4572
4573 static void GetExposedObject_Wrapper(LPVOID ptr)
4574 {
4575     CONTRACTL
4576     {
4577         THROWS;
4578         GC_TRIGGERS;
4579         MODE_COOPERATIVE;
4580     }
4581     CONTRACTL_END;
4582     GetExposedObject_Args *args = (GetExposedObject_Args *) ptr;
4583     *(args->ref) = args->pDomain->GetExposedObject();
4584 }
4585
4586
4587 OBJECTREF AppDomain::GetExposedObject()
4588 {
4589     CONTRACTL
4590     {
4591         MODE_COOPERATIVE;
4592         THROWS;
4593         GC_TRIGGERS;
4594         INJECT_FAULT(COMPlusThrowOM(););
4595     }
4596     CONTRACTL_END;
4597
4598     OBJECTREF ref = GetRawExposedObject();
4599     if (ref == NULL)
4600     {
4601         APPDOMAINREF obj = NULL;
4602
4603         Thread *pThread = GetThread();
4604         if (pThread->GetDomain() != this)
4605         {
4606             GCPROTECT_BEGIN(ref);
4607             GetExposedObject_Args args = {this, &ref};
4608             // call through DoCallBack with a domain transition
4609             pThread->DoADCallBack(this,GetExposedObject_Wrapper, &args,ADV_CREATING|ADV_RUNNINGIN);
4610             GCPROTECT_END();
4611             return ref;
4612         }
4613         MethodTable *pMT = MscorlibBinder::GetClass(CLASS__APP_DOMAIN);
4614
4615         // Create the module object
4616         obj = (APPDOMAINREF) AllocateObject(pMT);
4617         obj->SetDomain(this);
4618
4619         if (!StoreFirstObjectInHandle(m_ExposedObject, (OBJECTREF) obj))
4620         {
4621             obj = (APPDOMAINREF) GetRawExposedObject();
4622             _ASSERTE(obj);
4623         }
4624
4625         return (OBJECTREF) obj;
4626     }
4627
4628     return ref;
4629 }
4630
4631
4632
4633 OBJECTREF AppDomain::DoSetup(OBJECTREF* setupInfo)
4634 {
4635     CONTRACTL
4636     {
4637         MODE_COOPERATIVE;
4638         THROWS;
4639         GC_TRIGGERS;
4640         INJECT_FAULT(COMPlusThrowOM(););
4641     }
4642     CONTRACTL_END;
4643
4644     ADID adid=GetAppDomain()->GetId();
4645
4646     OBJECTREF retval=NULL;
4647     GCPROTECT_BEGIN(retval);
4648
4649     ENTER_DOMAIN_PTR(this,ADV_CREATING);
4650
4651     MethodDescCallSite setup(METHOD__APP_DOMAIN__SETUP);
4652
4653     ARG_SLOT args[1];
4654
4655     args[0]=ObjToArgSlot(*setupInfo);
4656
4657     OBJECTREF activator;
4658     activator=setup.Call_RetOBJECTREF(args);
4659     _ASSERTE(activator==NULL);
4660
4661 #if defined(FEATURE_MULTICOREJIT)
4662     // Disable AutoStartProfile in default domain from this code path.
4663     // It's called from SystemDomain::ExecuteMainMethod for normal program, not needed for SL and Asp.Net
4664     if (! IsDefaultDomain())
4665     {
4666         GCX_PREEMP();
4667
4668         GetMulticoreJitManager().AutoStartProfile(this);
4669     }
4670 #endif
4671
4672     END_DOMAIN_TRANSITION;
4673     GCPROTECT_END();
4674     return retval;
4675 }
4676
4677 #endif // !CROSSGEN_COMPILE
4678
4679 #ifdef FEATURE_COMINTEROP
4680 #ifndef CROSSGEN_COMPILE
4681 HRESULT AppDomain::GetComIPForExposedObject(IUnknown **pComIP)
4682 {
4683     // Assumption: This function is called for AppDomain's that the current
4684     //             thread is in or has entered, or the AppDomain is kept alive.
4685     //
4686     // Assumption: This function can now throw.  The caller is responsible for any
4687     //             BEGIN_EXTERNAL_ENTRYPOINT, EX_TRY, or other
4688     //             techniques to convert to a COM HRESULT protocol.
4689     CONTRACTL
4690     {
4691         THROWS;
4692         GC_TRIGGERS;
4693         MODE_ANY;
4694     }
4695     CONTRACTL_END;
4696
4697     HRESULT hr = S_OK;
4698     Thread *pThread = GetThread();
4699     if (m_pComIPForExposedObject)
4700     {
4701         GCX_PREEMP_THREAD_EXISTS(pThread);
4702         m_pComIPForExposedObject->AddRef();
4703         *pComIP = m_pComIPForExposedObject;
4704         return S_OK;
4705     }
4706
4707     IUnknown* punk = NULL;
4708
4709     OBJECTREF ref = NULL;
4710     GCPROTECT_BEGIN(ref);
4711
4712     EnsureComStarted();
4713
4714     ENTER_DOMAIN_PTR(this,ADV_DEFAULTAD)
4715     {
4716         ref = GetExposedObject();
4717         punk = GetComIPFromObjectRef(&ref);
4718         if (FastInterlockCompareExchangePointer(&m_pComIPForExposedObject, punk, NULL) == NULL)
4719         {
4720             GCX_PREEMP_THREAD_EXISTS(pThread);
4721             m_pComIPForExposedObject->AddRef();
4722         }
4723     }
4724     END_DOMAIN_TRANSITION;
4725
4726     GCPROTECT_END();
4727
4728     if(SUCCEEDED(hr))
4729     {
4730         *pComIP = m_pComIPForExposedObject;
4731     }
4732
4733     return hr;
4734 }
4735 #endif //#ifndef CROSSGEN_COMPILE
4736
4737 MethodTable *AppDomain::GetRedirectedType(WinMDAdapter::RedirectedTypeIndex index)
4738 {
4739     CONTRACTL
4740     {
4741         THROWS;
4742         GC_TRIGGERS;
4743         MODE_ANY;
4744     }
4745     CONTRACTL_END;
4746
4747     // If we have the type loaded already, use that
4748     if (m_rpCLRTypes[index] != nullptr)
4749     {
4750         return m_rpCLRTypes[index];
4751     }
4752
4753     WinMDAdapter::FrameworkAssemblyIndex frameworkAssemblyIndex;
4754     WinMDAdapter::GetRedirectedTypeInfo(index, nullptr, nullptr, nullptr, &frameworkAssemblyIndex, nullptr, nullptr);
4755     MethodTable * pMT = LoadRedirectedType(index, frameworkAssemblyIndex);
4756     m_rpCLRTypes[index] = pMT;
4757     return pMT;
4758 }
4759
4760 MethodTable* AppDomain::LoadRedirectedType(WinMDAdapter::RedirectedTypeIndex index, WinMDAdapter::FrameworkAssemblyIndex assembly)
4761 {
4762     CONTRACTL
4763     {
4764         THROWS;
4765         GC_TRIGGERS;
4766         MODE_ANY;
4767         PRECONDITION(index < WinMDAdapter::RedirectedTypeIndex_Count);
4768     }
4769     CONTRACTL_END;
4770
4771     LPCSTR szClrNamespace;
4772     LPCSTR szClrName;
4773     LPCSTR szFullWinRTName;
4774     WinMDAdapter::FrameworkAssemblyIndex nFrameworkAssemblyIndex;
4775
4776     WinMDAdapter::GetRedirectedTypeInfo(index, &szClrNamespace, &szClrName, &szFullWinRTName, &nFrameworkAssemblyIndex, nullptr, nullptr);
4777
4778     _ASSERTE(nFrameworkAssemblyIndex >= WinMDAdapter::FrameworkAssembly_Mscorlib &&
4779              nFrameworkAssemblyIndex < WinMDAdapter::FrameworkAssembly_Count);
4780
4781     if (assembly != nFrameworkAssemblyIndex)
4782     {
4783         // The framework type does not live in the assembly we were requested to load redirected types from
4784         return nullptr;
4785     }
4786     else if (nFrameworkAssemblyIndex == WinMDAdapter::FrameworkAssembly_Mscorlib)
4787     {
4788         return ClassLoader::LoadTypeByNameThrowing(MscorlibBinder::GetModule()->GetAssembly(),
4789                                                    szClrNamespace,
4790                                                    szClrName,
4791                                                    ClassLoader::ThrowIfNotFound,
4792                                                    ClassLoader::LoadTypes,
4793                                                    CLASS_LOAD_EXACTPARENTS).GetMethodTable();
4794     }
4795     else
4796     {
4797         LPCSTR pSimpleName;
4798         AssemblyMetaDataInternal context;
4799         const BYTE * pbKeyToken;
4800         DWORD cbKeyTokenLength;
4801         DWORD dwFlags;
4802
4803         WinMDAdapter::GetExtraAssemblyRefProps(nFrameworkAssemblyIndex,
4804                                                &pSimpleName,
4805                                                &context,
4806                                                &pbKeyToken,
4807                                                &cbKeyTokenLength,
4808                                                &dwFlags);
4809
4810         Assembly* pAssembly = AssemblySpec::LoadAssembly(pSimpleName,
4811                                                          &context,
4812                                                          pbKeyToken,
4813                                                          cbKeyTokenLength,
4814                                                          dwFlags);
4815
4816         return ClassLoader::LoadTypeByNameThrowing(
4817             pAssembly,
4818             szClrNamespace,
4819             szClrName,
4820             ClassLoader::ThrowIfNotFound,
4821             ClassLoader::LoadTypes,
4822             CLASS_LOAD_EXACTPARENTS).GetMethodTable();
4823     }
4824 }
4825 #endif //FEATURE_COMINTEROP
4826
4827 #endif //!DACCESS_COMPILE
4828
4829 #ifndef DACCESS_COMPILE
4830
4831 bool IsPlatformAssembly(LPCSTR szName, DomainAssembly *pDomainAssembly)
4832 {
4833     CONTRACTL
4834     {
4835         THROWS;
4836         GC_TRIGGERS;
4837         MODE_ANY;
4838         PRECONDITION(CheckPointer(szName));
4839         PRECONDITION(CheckPointer(pDomainAssembly));
4840     }
4841     CONTRACTL_END;
4842
4843     PEAssembly *pPEAssembly = pDomainAssembly->GetFile();
4844
4845     if (strcmp(szName, pPEAssembly->GetSimpleName()) != 0)
4846     {
4847         return false;
4848     }
4849
4850     DWORD cbPublicKey;
4851     const BYTE *pbPublicKey = static_cast<const BYTE *>(pPEAssembly->GetPublicKey(&cbPublicKey));
4852     if (pbPublicKey == nullptr)
4853     {
4854         return false;
4855     }
4856
4857     return StrongNameIsSilverlightPlatformKey(pbPublicKey, cbPublicKey);
4858 }
4859
4860 void AppDomain::AddAssembly(DomainAssembly * assem)
4861 {
4862     CONTRACTL
4863     {
4864         THROWS;
4865         GC_TRIGGERS;
4866         MODE_ANY;
4867         INJECT_FAULT(COMPlusThrowOM(););
4868     }
4869     CONTRACTL_END;
4870
4871     {
4872         CrstHolder ch(GetAssemblyListLock());
4873
4874         // Attempt to find empty space in assemblies list
4875         DWORD asmCount = m_Assemblies.GetCount_Unlocked();
4876         for (DWORD i = 0; i < asmCount; ++i)
4877         {
4878             if (m_Assemblies.Get_UnlockedNoReference(i) == NULL)
4879             {
4880                 m_Assemblies.Set_Unlocked(i, assem);
4881                 return;
4882             }
4883         }
4884
4885         // If empty space not found, simply add to end of list
4886         IfFailThrow(m_Assemblies.Append_Unlocked(assem));
4887     }
4888 }
4889
4890 void AppDomain::RemoveAssembly_Unlocked(DomainAssembly * pAsm)
4891 {
4892     CONTRACTL
4893     {
4894         NOTHROW;
4895         GC_NOTRIGGER;
4896     }
4897     CONTRACTL_END;
4898
4899     _ASSERTE(GetAssemblyListLock()->OwnedByCurrentThread());
4900
4901     DWORD asmCount = m_Assemblies.GetCount_Unlocked();
4902     for (DWORD i = 0; i < asmCount; ++i)
4903     {
4904         if (m_Assemblies.Get_UnlockedNoReference(i) == pAsm)
4905         {
4906             m_Assemblies.Set_Unlocked(i, NULL);
4907             return;
4908         }
4909     }
4910
4911     _ASSERTE(!"Unreachable");
4912 }
4913
4914 BOOL AppDomain::ContainsAssembly(Assembly * assem)
4915 {
4916     WRAPPER_NO_CONTRACT;
4917     AssemblyIterator i = IterateAssembliesEx((AssemblyIterationFlags)(
4918         kIncludeLoaded |
4919         (assem->IsIntrospectionOnly() ? kIncludeIntrospection : kIncludeExecution)));
4920     CollectibleAssemblyHolder<DomainAssembly *> pDomainAssembly;
4921
4922     while (i.Next(pDomainAssembly.This()))
4923     {
4924         CollectibleAssemblyHolder<Assembly *> pAssembly = pDomainAssembly->GetLoadedAssembly();
4925         if (pAssembly == assem)
4926             return TRUE;
4927     }
4928
4929     return FALSE;
4930 }
4931
4932 EEClassFactoryInfoHashTable* AppDomain::SetupClassFactHash()
4933 {
4934     CONTRACTL
4935     {
4936         THROWS;
4937         GC_TRIGGERS;
4938         MODE_ANY;
4939         INJECT_FAULT(COMPlusThrowOM(););
4940     }
4941     CONTRACTL_END;
4942
4943     CrstHolder ch(&m_ReflectionCrst);
4944
4945     if (m_pRefClassFactHash == NULL)
4946     {
4947         AllocMemHolder<void> pCache(GetLowFrequencyHeap()->AllocMem(S_SIZE_T(sizeof (EEClassFactoryInfoHashTable))));
4948         EEClassFactoryInfoHashTable *tmp = new (pCache) EEClassFactoryInfoHashTable;
4949         LockOwner lock = {&m_RefClassFactCrst,IsOwnerOfCrst};
4950         if (!tmp->Init(20, &lock))
4951             COMPlusThrowOM();
4952         pCache.SuppressRelease();
4953         m_pRefClassFactHash = tmp;
4954     }
4955
4956     return m_pRefClassFactHash;
4957 }
4958
4959 #ifdef FEATURE_COMINTEROP
4960 DispIDCache* AppDomain::SetupRefDispIDCache()
4961 {
4962     CONTRACTL
4963     {
4964         THROWS;
4965         GC_TRIGGERS;
4966         MODE_ANY;
4967         INJECT_FAULT(COMPlusThrowOM(););
4968     }
4969     CONTRACTL_END;
4970
4971     CrstHolder ch(&m_ReflectionCrst);
4972
4973     if (m_pRefDispIDCache == NULL)
4974     {
4975         AllocMemHolder<void> pCache = GetLowFrequencyHeap()->AllocMem(S_SIZE_T(sizeof (DispIDCache)));
4976
4977         DispIDCache *tmp = new (pCache) DispIDCache;
4978         tmp->Init();
4979
4980         pCache.SuppressRelease();
4981         m_pRefDispIDCache = tmp;
4982     }
4983
4984     return m_pRefDispIDCache;
4985 }
4986
4987 #endif // FEATURE_COMINTEROP
4988
4989 FileLoadLock *FileLoadLock::Create(PEFileListLock *pLock, PEFile *pFile, DomainFile *pDomainFile)
4990 {
4991     CONTRACTL
4992     {
4993         THROWS;
4994         GC_TRIGGERS;
4995         MODE_ANY;
4996         PRECONDITION(pLock->HasLock());
4997         PRECONDITION(pLock->FindFileLock(pFile) == NULL);
4998         INJECT_FAULT(COMPlusThrowOM(););
4999     }
5000     CONTRACTL_END;
5001
5002     NewHolder<FileLoadLock> result(new FileLoadLock(pLock, pFile, pDomainFile));
5003
5004     pLock->AddElement(result);
5005     result->AddRef(); // Add one ref on behalf of the ListLock's reference. The corresponding Release() happens in FileLoadLock::CompleteLoadLevel.
5006     return result.Extract();
5007 }
5008
5009 FileLoadLock::~FileLoadLock()
5010 {
5011     CONTRACTL
5012     {
5013         DESTRUCTOR_CHECK;
5014         NOTHROW;
5015         GC_TRIGGERS;
5016         MODE_ANY;
5017     }
5018     CONTRACTL_END;
5019     ((PEFile *) m_data)->Release();
5020 }
5021
5022 DomainFile *FileLoadLock::GetDomainFile()
5023 {
5024     LIMITED_METHOD_CONTRACT;
5025     return m_pDomainFile;
5026 }
5027
5028 FileLoadLevel FileLoadLock::GetLoadLevel()
5029 {
5030     LIMITED_METHOD_CONTRACT;
5031     return m_level;
5032 }
5033
5034 ADID FileLoadLock::GetAppDomainId()
5035 {
5036     LIMITED_METHOD_CONTRACT;
5037     return m_AppDomainId;
5038 }
5039
5040 // Acquire will return FALSE and not take the lock if the file
5041 // has already been loaded to the target level.  Otherwise,
5042 // it will return TRUE and take the lock.
5043 //
5044 // Note that the taker must release the lock via IncrementLoadLevel.
5045
5046 BOOL FileLoadLock::Acquire(FileLoadLevel targetLevel)
5047 {
5048     WRAPPER_NO_CONTRACT;
5049
5050     // If we are already loaded to the desired level, the lock is "free".
5051     if (m_level >= targetLevel)
5052         return FALSE;
5053
5054     if (!DeadlockAwareEnter())
5055     {
5056         // We failed to get the lock due to a deadlock.
5057         return FALSE;
5058     }
5059
5060     if (m_level >= targetLevel)
5061     {
5062         Leave();
5063         return FALSE;
5064     }
5065
5066     return TRUE;
5067 }
5068
5069 BOOL FileLoadLock::CanAcquire(FileLoadLevel targetLevel)
5070 {
5071     // If we are already loaded to the desired level, the lock is "free".
5072     if (m_level >= targetLevel)
5073         return FALSE;
5074
5075     return CanDeadlockAwareEnter();
5076 }
5077
5078 #if !defined(DACCESS_COMPILE) && (defined(LOGGING) || defined(STRESS_LOG))
5079 static const char *fileLoadLevelName[] =
5080 {
5081     "CREATE",                             // FILE_LOAD_CREATE
5082     "BEGIN",                              // FILE_LOAD_BEGIN
5083     "FIND_NATIVE_IMAGE",                  // FILE_LOAD_FIND_NATIVE_IMAGE
5084     "VERIFY_NATIVE_IMAGE_DEPENDENCIES",   // FILE_LOAD_VERIFY_NATIVE_IMAGE_DEPENDENCIES
5085     "ALLOCATE",                           // FILE_LOAD_ALLOCATE
5086     "ADD_DEPENDENCIES",                   // FILE_LOAD_ADD_DEPENDENCIES
5087     "PRE_LOADLIBRARY",                    // FILE_LOAD_PRE_LOADLIBRARY
5088     "LOADLIBRARY",                        // FILE_LOAD_LOADLIBRARY
5089     "POST_LOADLIBRARY",                   // FILE_LOAD_POST_LOADLIBRARY
5090     "EAGER_FIXUPS",                       // FILE_LOAD_EAGER_FIXUPS
5091     "VTABLE FIXUPS",                      // FILE_LOAD_VTABLE_FIXUPS
5092     "DELIVER_EVENTS",                     // FILE_LOAD_DELIVER_EVENTS
5093     "LOADED",                             // FILE_LOADED
5094     "VERIFY_EXECUTION",                   // FILE_LOAD_VERIFY_EXECUTION
5095     "ACTIVE",                             // FILE_ACTIVE
5096 };
5097 #endif // !DACCESS_COMPILE && (LOGGING || STRESS_LOG)
5098
5099 BOOL FileLoadLock::CompleteLoadLevel(FileLoadLevel level, BOOL success)
5100 {
5101     CONTRACTL
5102     {
5103         MODE_ANY;
5104         GC_TRIGGERS;
5105         THROWS;
5106         PRECONDITION(HasLock());
5107     }
5108     CONTRACTL_END;
5109
5110     // Increment may happen more than once if reentrancy occurs (e.g. LoadLibrary)
5111     if (level > m_level)
5112     {
5113         // Must complete each level in turn, unless we have an error
5114         CONSISTENCY_CHECK(m_pDomainFile->IsError() || (level == (m_level+1)));
5115         // Remove the lock from the list if the load is completed
5116         if (level >= FILE_ACTIVE)
5117         {
5118             {
5119                 GCX_COOP();
5120                 PEFileListLockHolder lock((PEFileListLock*)m_pList);
5121
5122 #if _DEBUG
5123                 BOOL fDbgOnly_SuccessfulUnlink =
5124 #endif
5125                     m_pList->Unlink(this);
5126                 _ASSERTE(fDbgOnly_SuccessfulUnlink);
5127
5128                 m_pDomainFile->ClearLoading();
5129
5130                 CONSISTENCY_CHECK(m_dwRefCount >= 2); // Caller (LoadDomainFile) should have 1 refcount and m_pList should have another which was acquired in FileLoadLock::Create.
5131
5132                 m_level = (FileLoadLevel)level;
5133
5134                 // Dev11 bug 236344
5135                 // In AppDomain::IsLoading, if the lock is taken on m_pList and then FindFileLock returns NULL,
5136                 // we depend on the DomainFile's load level being up to date. Hence we must update the load
5137                 // level while the m_pList lock is held.
5138                 if (success)
5139                     m_pDomainFile->SetLoadLevel(level);
5140             }
5141
5142
5143             Release(); // Release m_pList's refcount on this lock, which was acquired in FileLoadLock::Create
5144
5145         }
5146         else
5147         {
5148             m_level = (FileLoadLevel)level;
5149
5150             if (success)
5151                 m_pDomainFile->SetLoadLevel(level);
5152         }
5153
5154 #ifndef DACCESS_COMPILE
5155         switch(level)
5156         {
5157             case FILE_LOAD_ALLOCATE:
5158             case FILE_LOAD_ADD_DEPENDENCIES:
5159             case FILE_LOAD_DELIVER_EVENTS:
5160             case FILE_LOADED:
5161             case FILE_ACTIVE: // The timing of stress logs is not critical, so even for the FILE_ACTIVE stage we need not do it while the m_pList lock is held.
5162                 STRESS_LOG4(LF_CLASSLOADER, LL_INFO100, "Completed Load Level %s for DomainFile %p in AD %i - success = %i\n", fileLoadLevelName[level], m_pDomainFile, m_AppDomainId.m_dwId, success);
5163                 break;
5164             default:
5165                 break;
5166         }
5167 #endif
5168
5169         return TRUE;
5170     }
5171     else
5172         return FALSE;
5173 }
5174
5175 void FileLoadLock::SetError(Exception *ex)
5176 {
5177     CONTRACTL
5178     {
5179         MODE_ANY;
5180         GC_TRIGGERS;
5181         THROWS;
5182         PRECONDITION(CheckPointer(ex));
5183         PRECONDITION(HasLock());
5184         INJECT_FAULT(COMPlusThrowOM(););
5185     }
5186     CONTRACTL_END;
5187
5188     m_cachedHR = ex->GetHR();
5189
5190     LOG((LF_LOADER, LL_WARNING, "LOADER: %x:***%s*\t!!!Non-transient error 0x%x\n",
5191          m_pDomainFile->GetAppDomain(), m_pDomainFile->GetSimpleName(), m_cachedHR));
5192
5193     m_pDomainFile->SetError(ex);
5194
5195     CompleteLoadLevel(FILE_ACTIVE, FALSE);
5196 }
5197
5198 void FileLoadLock::AddRef()
5199 {
5200     LIMITED_METHOD_CONTRACT;
5201     FastInterlockIncrement((LONG *) &m_dwRefCount);
5202 }
5203
5204 UINT32 FileLoadLock::Release()
5205 {
5206     CONTRACTL
5207     {
5208         NOTHROW;
5209         GC_TRIGGERS;
5210         MODE_ANY;
5211     }
5212     CONTRACTL_END;
5213
5214     LONG count = FastInterlockDecrement((LONG *) &m_dwRefCount);
5215     if (count == 0)
5216         delete this;
5217
5218     return count;
5219 }
5220
5221 FileLoadLock::FileLoadLock(PEFileListLock *pLock, PEFile *pFile, DomainFile *pDomainFile)
5222   : ListLockEntry(pLock, pFile, "File load lock"),
5223     m_level((FileLoadLevel) (FILE_LOAD_CREATE)),
5224     m_pDomainFile(pDomainFile),
5225     m_cachedHR(S_OK),
5226     m_AppDomainId(pDomainFile->GetAppDomain()->GetId())
5227 {
5228     WRAPPER_NO_CONTRACT;
5229     pFile->AddRef();
5230 }
5231
5232 void FileLoadLock::HolderLeave(FileLoadLock *pThis)
5233 {
5234     LIMITED_METHOD_CONTRACT;
5235     pThis->Leave();
5236 }
5237
5238
5239
5240
5241
5242
5243 //
5244 // Assembly loading:
5245 //
5246 // Assembly loading is carefully layered to avoid deadlocks in the
5247 // presence of circular loading dependencies.
5248 // A LoadLevel is associated with each assembly as it is being loaded.  During the
5249 // act of loading (abstractly, increasing its load level), its lock is
5250 // held, and the current load level is stored on the thread.  Any
5251 // recursive loads during that period are automatically restricted to
5252 // only partially load the dependent assembly to the same level as the
5253 // caller (or to one short of that level in the presence of a deadlock
5254 // loop.)
5255 //
5256 // Each loading stage must be carfully constructed so that
5257 // this constraint is expected and can be dealt with.
5258 //
5259 // Note that there is one case where this still doesn't handle recursion, and that is the
5260 // security subsytem. The security system runs managed code, and thus must typically fully
5261 // initialize assemblies of permission sets it is trying to use. (And of course, these may be used
5262 // while those assemblies are initializing.)  This is dealt with in the historical manner - namely
5263 // the security system passes in a special flag which says that it will deal with null return values
5264 // in the case where a load cannot be safely completed due to such issues.
5265 //
5266
5267 void AppDomain::LoadSystemAssemblies()
5268 {
5269     STANDARD_VM_CONTRACT;
5270
5271     // The only reason to make an assembly a "system assembly" is if the EE is caching
5272     // pointers to stuff in the assembly.  Because this is going on, we need to preserve
5273     // the invariant that the assembly is loaded into every app domain.
5274     //
5275     // Right now we have only one system assembly. We shouldn't need to add any more.
5276
5277     LoadAssembly(NULL, SystemDomain::System()->SystemFile(), FILE_ACTIVE);
5278 }
5279
5280 FileLoadLevel AppDomain::GetDomainFileLoadLevel(DomainFile *pFile)
5281 {
5282     CONTRACTL
5283     {
5284         THROWS;
5285         GC_TRIGGERS;
5286         MODE_ANY;
5287     }
5288     CONTRACTL_END
5289
5290     LoadLockHolder lock(this);
5291
5292     FileLoadLock* pLockEntry = (FileLoadLock *) lock->FindFileLock(pFile->GetFile());
5293
5294     if (pLockEntry == NULL)
5295         return pFile->GetLoadLevel();
5296     else
5297         return pLockEntry->GetLoadLevel();
5298 }
5299
5300 // This checks if the thread has initiated (or completed) loading at the given level.  A false guarantees that
5301 // (a) The current thread (or a thread blocking on the current thread) has not started loading the file
5302 //      at the given level, and
5303 // (b) No other thread had started loading the file at this level at the start of this function call.
5304
5305 // Note that another thread may start loading the file at that level in a race with the completion of
5306 // this function.  However, the caller still has the guarantee that such a load started after this
5307 // function was called (and e.g. any state in place before the function call will be seen by the other thread.)
5308 //
5309 // Conversely, a true guarantees that either the current thread has started the load step, or another
5310 // thread has completed the load step.
5311 //
5312
5313 BOOL AppDomain::IsLoading(DomainFile *pFile, FileLoadLevel level)
5314 {
5315     // Cheap out
5316     if (pFile->GetLoadLevel() < level)
5317     {
5318         FileLoadLock *pLock = NULL;
5319         {
5320             LoadLockHolder lock(this);
5321
5322             pLock = (FileLoadLock *) lock->FindFileLock(pFile->GetFile());
5323
5324             if (pLock == NULL)
5325             {
5326                 // No thread involved with loading
5327                 return pFile->GetLoadLevel() >= level;
5328             }
5329
5330             pLock->AddRef();
5331         }
5332
5333         FileLoadLockRefHolder lockRef(pLock);
5334
5335         if (pLock->Acquire(level))
5336         {
5337             // We got the lock - therefore no other thread has started this loading step yet.
5338             pLock->Leave();
5339             return FALSE;
5340         }
5341
5342         // We didn't get the lock - either this thread is already doing the load,
5343         // or else the load has already finished.
5344     }
5345     return TRUE;
5346 }
5347
5348 // CheckLoading is a weaker form of IsLoading, which will not block on
5349 // other threads waiting for their status.  This is appropriate for asserts.
5350 CHECK AppDomain::CheckLoading(DomainFile *pFile, FileLoadLevel level)
5351 {
5352     // Cheap out
5353     if (pFile->GetLoadLevel() < level)
5354     {
5355         FileLoadLock *pLock = NULL;
5356
5357         LoadLockHolder lock(this);
5358
5359         pLock = (FileLoadLock *) lock->FindFileLock(pFile->GetFile());
5360
5361         if (pLock != NULL
5362             && pLock->CanAcquire(level))
5363         {
5364             // We can get the lock - therefore no other thread has started this loading step yet.
5365             CHECK_FAILF(("Loading step %d has not been initiated yet", level));
5366         }
5367
5368         // We didn't get the lock - either this thread is already doing the load,
5369         // or else the load has already finished.
5370     }
5371
5372     CHECK_OK;
5373 }
5374
5375 CHECK AppDomain::CheckCanLoadTypes(Assembly *pAssembly)
5376 {
5377     CONTRACTL
5378     {
5379         THROWS;
5380         GC_TRIGGERS;
5381         MODE_ANY;
5382     }
5383     CONTRACTL_END;
5384     CHECK_MSG(CheckValidModule(pAssembly->GetManifestModule()),
5385               "Type loading can occur only when executing in the assembly's app domain");
5386     CHECK_OK;
5387 }
5388
5389 CHECK AppDomain::CheckCanExecuteManagedCode(MethodDesc* pMD)
5390 {
5391     CONTRACTL
5392     {
5393         THROWS;
5394         GC_TRIGGERS;
5395         MODE_ANY;
5396     }
5397     CONTRACTL_END;
5398
5399     Module* pModule=pMD->GetModule();
5400
5401     CHECK_MSG(CheckValidModule(pModule),
5402               "Managed code can only run when executing in the module's app domain");
5403
5404     if (!pMD->IsInterface() || pMD->IsStatic()) //interfaces require no activation for instance methods
5405     {
5406         //cctor could have been interupted by ADU
5407         CHECK_MSG(HasUnloadStarted() || pModule->CheckActivated(),
5408               "Managed code can only run when its module has been activated in the current app domain");
5409     }
5410
5411     CHECK_MSG(!IsPassiveDomain() || pModule->CanExecuteCode(),
5412               "Executing managed code from an unsafe assembly in a Passive AppDomain");
5413
5414     CHECK_OK;
5415 }
5416
5417 #endif // !DACCESS_COMPILE
5418
5419 void AppDomain::LoadDomainFile(DomainFile *pFile,
5420                                FileLoadLevel targetLevel)
5421 {
5422     CONTRACTL
5423     {
5424         if (FORBIDGC_LOADER_USE_ENABLED()) NOTHROW; else THROWS;
5425         if (FORBIDGC_LOADER_USE_ENABLED()) GC_NOTRIGGER; else GC_TRIGGERS;
5426         if (FORBIDGC_LOADER_USE_ENABLED()) FORBID_FAULT; else { INJECT_FAULT(COMPlusThrowOM();); }
5427         INJECT_FAULT(COMPlusThrowOM(););
5428     }
5429     CONTRACTL_END;
5430
5431     // Quick exit if finished
5432     if (pFile->GetLoadLevel() >= targetLevel)
5433         return;
5434
5435     // Handle the error case
5436     pFile->ThrowIfError(targetLevel);
5437
5438
5439 #ifndef DACCESS_COMPILE
5440
5441     if (pFile->IsLoading())
5442     {
5443         GCX_PREEMP();
5444
5445         // Load some more if appropriate
5446         LoadLockHolder lock(this);
5447
5448         FileLoadLock* pLockEntry = (FileLoadLock *) lock->FindFileLock(pFile->GetFile());
5449         if (pLockEntry == NULL)
5450         {
5451             _ASSERTE (!pFile->IsLoading());
5452             return;
5453         }
5454
5455         pLockEntry->AddRef();
5456
5457         lock.Release();
5458
5459         LoadDomainFile(pLockEntry, targetLevel);
5460     }
5461
5462 #else // DACCESS_COMPILE
5463     DacNotImpl();
5464 #endif // DACCESS_COMPILE
5465 }
5466
5467 #ifndef DACCESS_COMPILE
5468
5469 FileLoadLevel AppDomain::GetThreadFileLoadLevel()
5470 {
5471     WRAPPER_NO_CONTRACT;
5472     if (GetThread()->GetLoadLevelLimiter() == NULL)
5473         return FILE_ACTIVE;
5474     else
5475         return (FileLoadLevel)(GetThread()->GetLoadLevelLimiter()->GetLoadLevel()-1);
5476 }
5477
5478
5479 Assembly *AppDomain::LoadAssembly(AssemblySpec* pIdentity,
5480                                   PEAssembly *pFile,
5481                                   FileLoadLevel targetLevel)
5482 {
5483     CONTRACT(Assembly *)
5484     {
5485         GC_TRIGGERS;
5486         THROWS;
5487         MODE_ANY;
5488         PRECONDITION(CheckPointer(pFile));
5489         POSTCONDITION(CheckPointer(RETVAL, NULL_OK)); // May be NULL in recursive load case
5490         INJECT_FAULT(COMPlusThrowOM(););
5491     }
5492     CONTRACT_END;
5493
5494     DomainAssembly *pAssembly = LoadDomainAssembly(pIdentity, pFile, targetLevel);
5495     PREFIX_ASSUME(pAssembly != NULL);
5496
5497     RETURN pAssembly->GetAssembly();
5498 }
5499
5500 #ifndef CROSSGEN_COMPILE
5501 // Thread stress
5502 class LoadDomainAssemblyStress : APIThreadStress
5503 {
5504 public:
5505     AppDomain *pThis;
5506     AssemblySpec* pSpec;
5507     PEAssembly *pFile;
5508     FileLoadLevel targetLevel;
5509
5510     LoadDomainAssemblyStress(AppDomain *pThis, AssemblySpec* pSpec, PEAssembly *pFile, FileLoadLevel targetLevel)
5511         : pThis(pThis), pSpec(pSpec), pFile(pFile), targetLevel(targetLevel) {LIMITED_METHOD_CONTRACT;}
5512
5513     void Invoke()
5514     {
5515         WRAPPER_NO_CONTRACT;
5516         STATIC_CONTRACT_SO_INTOLERANT;
5517         SetupThread();
5518         pThis->LoadDomainAssembly(pSpec, pFile, targetLevel);
5519     }
5520 };
5521 #endif // CROSSGEN_COMPILE
5522
5523 extern BOOL AreSameBinderInstance(ICLRPrivBinder *pBinderA, ICLRPrivBinder *pBinderB);
5524
5525 DomainAssembly* AppDomain::LoadDomainAssembly( AssemblySpec* pSpec,
5526                                                 PEAssembly *pFile,
5527                                                 FileLoadLevel targetLevel)
5528 {
5529     STATIC_CONTRACT_THROWS;
5530
5531     if (pSpec == nullptr)
5532     {
5533         // skip caching, since we don't have anything to base it on
5534         return LoadDomainAssemblyInternal(pSpec, pFile, targetLevel);
5535     }
5536
5537     DomainAssembly* pRetVal = NULL;
5538     EX_TRY
5539     {
5540         pRetVal = LoadDomainAssemblyInternal(pSpec, pFile, targetLevel);
5541     }
5542     EX_HOOK
5543     {
5544         Exception* pEx=GET_EXCEPTION();
5545         if (!pEx->IsTransient())
5546         {
5547             // Setup the binder reference in AssemblySpec from the PEAssembly if one is not already set.
5548             ICLRPrivBinder* pCurrentBindingContext = pSpec->GetBindingContext();
5549             ICLRPrivBinder* pBindingContextFromPEAssembly = pFile->GetBindingContext();
5550
5551             if (pCurrentBindingContext == NULL)
5552             {
5553                 // Set the binding context we got from the PEAssembly if AssemblySpec does not
5554                 // have that information
5555                 _ASSERTE(pBindingContextFromPEAssembly != NULL);
5556                 pSpec->SetBindingContext(pBindingContextFromPEAssembly);
5557             }
5558 #if defined(_DEBUG)
5559             else
5560             {
5561                 // Binding context in the spec should be the same as the binding context in the PEAssembly
5562                 _ASSERTE(AreSameBinderInstance(pCurrentBindingContext, pBindingContextFromPEAssembly));
5563             }
5564 #endif // _DEBUG
5565
5566             if (!EEFileLoadException::CheckType(pEx))
5567             {
5568                 StackSString name;
5569                 pSpec->GetFileOrDisplayName(0, name);
5570                 pEx=new EEFileLoadException(name, pEx->GetHR(), NULL, pEx);
5571                 AddExceptionToCache(pSpec, pEx);
5572                 PAL_CPP_THROW(Exception *, pEx);
5573             }
5574             else
5575                 AddExceptionToCache(pSpec, pEx);
5576         }
5577     }
5578     EX_END_HOOK;
5579
5580     return pRetVal;
5581 }
5582
5583
5584 DomainAssembly *AppDomain::LoadDomainAssemblyInternal(AssemblySpec* pIdentity,
5585                                               PEAssembly *pFile,
5586                                               FileLoadLevel targetLevel)
5587 {
5588     CONTRACT(DomainAssembly *)
5589     {
5590         GC_TRIGGERS;
5591         THROWS;
5592         MODE_ANY;
5593         PRECONDITION(CheckPointer(pFile));
5594         PRECONDITION(pFile->IsSystem() || ::GetAppDomain()==this);
5595         POSTCONDITION(CheckPointer(RETVAL));
5596         POSTCONDITION(RETVAL->GetLoadLevel() >= GetThreadFileLoadLevel()
5597                       || RETVAL->GetLoadLevel() >= targetLevel);
5598         POSTCONDITION(RETVAL->CheckNoError(targetLevel));
5599         INJECT_FAULT(COMPlusThrowOM(););
5600     }
5601     CONTRACT_END;
5602
5603
5604     DomainAssembly * result;
5605
5606 #ifndef CROSSGEN_COMPILE
5607     LoadDomainAssemblyStress ts (this, pIdentity, pFile, targetLevel);
5608 #endif
5609
5610     // Go into preemptive mode since this may take a while.
5611     GCX_PREEMP();
5612
5613     // Check for existing fully loaded assembly, or for an assembly which has failed during the loading process.
5614     result = FindAssembly(pFile, FindAssemblyOptions_IncludeFailedToLoad);
5615
5616     if (result == NULL)
5617     {
5618         // Allocate the DomainAssembly a bit early to avoid GC mode problems. We could potentially avoid
5619         // a rare redundant allocation by moving this closer to FileLoadLock::Create, but it's not worth it.
5620
5621         NewHolder<DomainAssembly> pDomainAssembly;
5622         pDomainAssembly = new DomainAssembly(this, pFile, this->GetLoaderAllocator());
5623
5624         LoadLockHolder lock(this);
5625
5626         // Find the list lock entry
5627         FileLoadLock * fileLock = (FileLoadLock *)lock->FindFileLock(pFile);
5628         if (fileLock == NULL)
5629         {
5630             // Check again in case we were racing
5631             result = FindAssembly(pFile, FindAssemblyOptions_IncludeFailedToLoad);
5632             if (result == NULL)
5633             {
5634                 // We are the first one in - create the DomainAssembly
5635                 fileLock = FileLoadLock::Create(lock, pFile, pDomainAssembly);
5636                 pDomainAssembly.SuppressRelease();
5637             }
5638         }
5639         else
5640         {
5641             fileLock->AddRef();
5642         }
5643
5644         lock.Release();
5645
5646         if (result == NULL)
5647         {
5648             // We pass our ref on fileLock to LoadDomainFile to release.
5649
5650             // Note that if we throw here, we will poison fileLock with an error condition,
5651             // so it will not be removed until app domain unload.  So there is no need
5652             // to release our ref count.
5653             result = (DomainAssembly *)LoadDomainFile(fileLock, targetLevel);
5654         }
5655         else
5656         {
5657             result->EnsureLoadLevel(targetLevel);
5658         }
5659     }
5660     else
5661         result->EnsureLoadLevel(targetLevel);
5662
5663     // Malformed metadata may contain a Module reference to what is actually
5664     // an Assembly. In this case we need to throw an exception, since returning
5665     // a DomainModule as a DomainAssembly is a type safety violation.
5666     if (!result->IsAssembly())
5667     {
5668         ThrowHR(COR_E_ASSEMBLYEXPECTED);
5669     }
5670
5671     // Cache result in all cases, since found pFile could be from a different AssemblyRef than pIdentity
5672     // Do not cache WindowsRuntime assemblies, they are cached in code:CLRPrivTypeCacheWinRT
5673     if ((pIdentity != NULL) && (pIdentity->CanUseWithBindingCache()) && (result->CanUseWithBindingCache()))
5674         GetAppDomain()->AddAssemblyToCache(pIdentity, result);
5675
5676     RETURN result;
5677 } // AppDomain::LoadDomainAssembly
5678
5679
5680 struct LoadFileArgs
5681 {
5682     FileLoadLock *pLock;
5683     FileLoadLevel targetLevel;
5684     DomainFile *result;
5685 };
5686
5687 #ifndef CROSSGEN_COMPILE
5688 static void LoadDomainFile_Wrapper(void *ptr)
5689 {
5690     WRAPPER_NO_CONTRACT;
5691     STATIC_CONTRACT_SO_INTOLERANT;
5692     GCX_PREEMP();
5693     LoadFileArgs *args = (LoadFileArgs *) ptr;
5694     args->result = GetAppDomain()->LoadDomainFile(args->pLock, args->targetLevel);
5695 }
5696 #endif // !CROSSGEN_COMPILE
5697
5698 DomainFile *AppDomain::LoadDomainFile(FileLoadLock *pLock, FileLoadLevel targetLevel)
5699 {
5700     CONTRACT(DomainFile *)
5701     {
5702         STANDARD_VM_CHECK;
5703         PRECONDITION(CheckPointer(pLock));
5704         PRECONDITION(pLock->GetDomainFile()->GetAppDomain() == this);
5705         POSTCONDITION(RETVAL->GetLoadLevel() >= GetThreadFileLoadLevel()
5706                       || RETVAL->GetLoadLevel() >= targetLevel);
5707         POSTCONDITION(RETVAL->CheckNoError(targetLevel));
5708     }
5709     CONTRACT_END;
5710
5711
5712     if(!CanLoadCode())
5713         COMPlusThrow(kAppDomainUnloadedException);
5714
5715     // Thread stress
5716     APIThreadStress::SyncThreadStress();
5717
5718     DomainFile *pFile = pLock->GetDomainFile();
5719
5720     // Make sure we release the lock on exit
5721     FileLoadLockRefHolder lockRef(pLock);
5722
5723     // We need to perform the early steps of loading mscorlib without a domain transition.  This is
5724     // important for bootstrapping purposes - we need to get mscorlib at least partially loaded
5725     // into a domain before we can run serialization code to do the transition.
5726     //
5727     // Note that we cannot do this in general for all assemblies, because some of the security computations
5728     // require the managed exposed object, which must be created in the correct app domain.
5729
5730     if (this != GetAppDomain()
5731         && pFile->GetFile()->IsSystem()
5732         && targetLevel > FILE_LOAD_ALLOCATE)
5733     {
5734         // Re-call the routine with a limited load level. This will cause the first part of the load to
5735         // get performed in the current app domain.
5736
5737         pLock->AddRef();
5738         LoadDomainFile(pLock, targetLevel > FILE_LOAD_ALLOCATE ? FILE_LOAD_ALLOCATE : targetLevel);
5739
5740         // Now continue on to complete the rest of the load, if any.
5741     }
5742
5743     // Do a quick out check for the already loaded case.
5744     if (pLock->GetLoadLevel() >= targetLevel)
5745     {
5746         pFile->ThrowIfError(targetLevel);
5747
5748         RETURN pFile;
5749     }
5750
5751 #ifndef CROSSGEN_COMPILE
5752     // Make sure we are in the right domain.  Many of the load operations require the target domain
5753     // to be the current app domain, most notably anything involving managed code or managed object
5754     // creation.
5755     if (this != GetAppDomain()
5756         && (!pFile->GetFile()->IsSystem() || targetLevel > FILE_LOAD_ALLOCATE))
5757     {
5758         // Transition to the correct app domain and perform the load there.
5759         GCX_COOP();
5760
5761         // we will release the lock in the other app domain
5762         lockRef.SuppressRelease();
5763
5764         if(!CanLoadCode() || GetDefaultContext() ==NULL)
5765             COMPlusThrow(kAppDomainUnloadedException);
5766         LoadFileArgs args = {pLock, targetLevel, NULL};
5767         GetThread()->DoADCallBack(this, LoadDomainFile_Wrapper, (void *) &args, ADV_CREATING);
5768
5769         RETURN args.result;
5770     }
5771 #endif // CROSSGEN_COMPILE
5772
5773     // Initialize a loading queue.  This will hold any loads which are triggered recursively but
5774     // which cannot be immediately satisfied due to anti-deadlock constraints.
5775
5776     // PendingLoadQueues are allocated on the stack during a load, and
5777     // shared with all nested loads on the same thread. (Note that we won't use
5778     // "candidate" if we are in a recursive load; that's OK since they are cheap to
5779     // construct.)
5780     FileLoadLevel immediateTargetLevel = targetLevel;
5781     {
5782         LoadLevelLimiter limit;
5783         limit.Activate();
5784
5785         // We cannot set a target level higher than that allowed by the limiter currently.
5786         // This is because of anti-deadlock constraints.
5787         if (immediateTargetLevel > limit.GetLoadLevel())
5788             immediateTargetLevel = limit.GetLoadLevel();
5789
5790         LOG((LF_LOADER, LL_INFO100, "LOADER: %x:***%s*\t>>>Load initiated, %s/%s\n",
5791              pFile->GetAppDomain(), pFile->GetSimpleName(),
5792              fileLoadLevelName[immediateTargetLevel], fileLoadLevelName[targetLevel]));
5793
5794         // Now loop and do the load incrementally to the target level.
5795         if (pLock->GetLoadLevel() < immediateTargetLevel)
5796         {
5797             // Thread stress
5798             APIThreadStress::SyncThreadStress();
5799
5800             while (pLock->Acquire(immediateTargetLevel))
5801             {
5802                 FileLoadLevel workLevel;
5803                 {
5804                     FileLoadLockHolder fileLock(pLock);
5805
5806                     // Work level is next step to do
5807                     workLevel = (FileLoadLevel)(fileLock->GetLoadLevel()+1);
5808
5809                     // Set up the anti-deadlock constraint: we cannot safely recursively load any assemblies
5810                     // on this thread to a higher level than this assembly is being loaded now.
5811                     // Note that we do allow work at a parallel level; any deadlocks caused here will
5812                     // be resolved by the deadlock detection in the FileLoadLocks.
5813                     limit.SetLoadLevel(workLevel);
5814
5815                     LOG((LF_LOADER,
5816                          (workLevel == FILE_LOAD_BEGIN
5817                           || workLevel == FILE_LOADED
5818                           || workLevel == FILE_ACTIVE)
5819                          ? LL_INFO10 : LL_INFO1000,
5820                          "LOADER: %p:***%s*\t   loading at level %s\n",
5821                          this, pFile->GetSimpleName(), fileLoadLevelName[workLevel]));
5822
5823                     TryIncrementalLoad(pFile, workLevel, fileLock);
5824                 }
5825                 TESTHOOKCALL(CompletedFileLoadLevel(GetId().m_dwId,pFile,workLevel));
5826             }
5827
5828             if (pLock->GetLoadLevel() == immediateTargetLevel-1)
5829             {
5830                 LOG((LF_LOADER, LL_INFO100, "LOADER: %x:***%s*\t<<<Load limited due to detected deadlock, %s\n",
5831                      pFile->GetAppDomain(), pFile->GetSimpleName(),
5832                      fileLoadLevelName[immediateTargetLevel-1]));
5833             }
5834         }
5835
5836         LOG((LF_LOADER, LL_INFO100, "LOADER: %x:***%s*\t<<<Load completed, %s\n",
5837              pFile->GetAppDomain(), pFile->GetSimpleName(),
5838              fileLoadLevelName[pLock->GetLoadLevel()]));
5839
5840     }
5841
5842     // There may have been an error stored on the domain file by another thread, or from a previous load
5843     pFile->ThrowIfError(targetLevel);
5844
5845     // There are two normal results from the above loop.
5846     //
5847     // 1. We succeeded in loading the file to the current thread's load level.
5848     // 2. We succeeded in loading the file to the current thread's load level - 1, due
5849     //      to deadlock condition with another thread loading the same assembly.
5850     //
5851     // Either of these are considered satisfactory results, as code inside a load must expect
5852     // a parial load result.
5853     //
5854     // However, if load level elevation has occurred, then it is possible for a deadlock to
5855     // prevent us from loading an assembly which was loading before the elevation at a radically
5856     // lower level.  In such a case, we throw an exception which transiently fails the current
5857     // load, since it is likely we have not satisfied the caller.
5858     // (An alternate, and possibly preferable, strategy here would be for all callers to explicitly
5859     // identify the minimum load level acceptable via CheckLoadDomainFile and throw from there.)
5860
5861     pFile->RequireLoadLevel((FileLoadLevel)(immediateTargetLevel-1));
5862
5863
5864     RETURN pFile;
5865 }
5866
5867 void AppDomain::TryIncrementalLoad(DomainFile *pFile, FileLoadLevel workLevel, FileLoadLockHolder &lockHolder)
5868 {
5869     STANDARD_VM_CONTRACT;
5870
5871     // This is factored out so we don't call EX_TRY in a loop (EX_TRY can _alloca)
5872
5873     BOOL released = FALSE;
5874     FileLoadLock* pLoadLock = lockHolder.GetValue();
5875
5876     EX_TRY
5877     {
5878
5879         // Special case: for LoadLibrary, we cannot hold the lock during the
5880         // actual LoadLibrary call, because we might get a callback from _CorDllMain on any
5881         // other thread.  (Note that this requires DomainFile's LoadLibrary to be independently threadsafe.)
5882
5883         if (workLevel == FILE_LOAD_LOADLIBRARY)
5884         {
5885             lockHolder.Release();
5886             released = TRUE;
5887         }
5888
5889         // Do the work
5890         TESTHOOKCALL(NextFileLoadLevel(GetId().m_dwId,pFile,workLevel));
5891         BOOL success = pFile->DoIncrementalLoad(workLevel);
5892         TESTHOOKCALL(CompletingFileLoadLevel(GetId().m_dwId,pFile,workLevel));
5893         if (released)
5894         {
5895             // Reobtain lock to increment level. (Note that another thread may
5896             // have already done it which is OK.
5897             if (pLoadLock->Acquire(workLevel))
5898             {
5899                 // note lockHolder.Acquire isn't wired up to actually take the lock
5900                 lockHolder = pLoadLock;
5901                 released = FALSE;
5902             }
5903         }
5904
5905         if (!released)
5906         {
5907             // Complete the level.
5908             if (pLoadLock->CompleteLoadLevel(workLevel, success) &&
5909                 pLoadLock->GetLoadLevel()==FILE_LOAD_DELIVER_EVENTS)
5910             {
5911                 lockHolder.Release();
5912                 released = TRUE;
5913                 pFile->DeliverAsyncEvents();
5914             };
5915         }
5916     }
5917     EX_HOOK
5918     {
5919         Exception *pEx = GET_EXCEPTION();
5920
5921
5922         //We will cache this error and wire this load to forever fail,
5923         // unless the exception is transient or the file is loaded OK but just cannot execute
5924         if (!pEx->IsTransient() && !pFile->IsLoaded())
5925         {
5926
5927             if (released)
5928             {
5929                 // Reobtain lock to increment level. (Note that another thread may
5930                 // have already done it which is OK.
5931                 if (pLoadLock->Acquire(workLevel)) // note pLockHolder->Acquire isn't wired up to actually take the lock
5932                 {
5933                     // note lockHolder.Acquire isn't wired up to actually take the lock
5934                     lockHolder = pLoadLock;
5935                     released = FALSE;
5936                 }
5937             }
5938
5939             if (!released)
5940             {
5941                 // Report the error in the lock
5942                 pLoadLock->SetError(pEx);
5943             }
5944
5945             if (!EEFileLoadException::CheckType(pEx))
5946                 EEFileLoadException::Throw(pFile->GetFile(), pEx->GetHR(), pEx);
5947         }
5948
5949         // Otherwise, we simply abort this load, and can retry later on.
5950         // @todo cleanup: make sure that each level is restartable after an exception, and
5951         // leaves no bad side effects
5952     }
5953     EX_END_HOOK;
5954 }
5955
5956 // Checks whether the module is valid to be in the given app domain (need not be yet loaded)
5957 CHECK AppDomain::CheckValidModule(Module * pModule)
5958 {
5959     CONTRACTL
5960     {
5961         THROWS;
5962         GC_TRIGGERS;
5963         MODE_ANY;
5964     }
5965     CONTRACTL_END;
5966
5967     if (pModule->FindDomainFile(this) != NULL)
5968         CHECK_OK;
5969
5970     CCHECK_START
5971     {
5972         Assembly * pAssembly = pModule->GetAssembly();
5973
5974         CCHECK(pAssembly->IsDomainNeutral());
5975 #ifdef FEATURE_LOADER_OPTIMIZATION
5976         Assembly * pSharedAssembly = NULL;
5977         _ASSERTE(this == ::GetAppDomain());
5978         {
5979             SharedAssemblyLocator locator(pAssembly->GetManifestFile());
5980             pSharedAssembly = SharedDomain::GetDomain()->FindShareableAssembly(&locator);
5981         }
5982
5983         CCHECK(pAssembly == pSharedAssembly);
5984 #endif
5985     }
5986     CCHECK_END;
5987
5988     CHECK_OK;
5989 }
5990
5991 #ifdef FEATURE_LOADER_OPTIMIZATION
5992 // Loads an existing Module into an AppDomain
5993 // WARNING: this can only be done in a very limited scenario - the Module must be an unloaded domain neutral
5994 // dependency in the app domain in question.  Normal code should not call this!
5995 DomainFile *AppDomain::LoadDomainNeutralModuleDependency(Module *pModule, FileLoadLevel targetLevel)
5996 {
5997     CONTRACT(DomainFile *)
5998     {
5999         THROWS;
6000         GC_TRIGGERS;
6001         MODE_ANY;
6002         PRECONDITION(::GetAppDomain()==this);
6003         PRECONDITION(CheckPointer(pModule));
6004         POSTCONDITION(CheckValidModule(pModule));
6005         POSTCONDITION(CheckPointer(RETVAL));
6006         POSTCONDITION(RETVAL->GetModule() == pModule);
6007     }
6008     CONTRACT_END;
6009
6010     DomainFile *pDomainFile = pModule->FindDomainFile(this);
6011
6012     STRESS_LOG3(LF_CLASSLOADER, LL_INFO100,"LDNMD: DomainFile %p for module %p in AppDomain %i\n",pDomainFile,pModule,GetId().m_dwId);
6013
6014     if (pDomainFile == NULL)
6015     {
6016         GCX_PREEMP();
6017
6018         Assembly *pAssembly = pModule->GetAssembly();
6019
6020         DomainAssembly *pDomainAssembly = pAssembly->FindDomainAssembly(this);
6021         if (pDomainAssembly == NULL)
6022         {
6023             AssemblySpec spec(this);
6024             spec.InitializeSpec(pAssembly->GetManifestFile());
6025
6026             pDomainAssembly = spec.LoadDomainAssembly(targetLevel);
6027         }
6028         else
6029         {
6030             //if the domain assembly already exists, we need to load it to the target level
6031             pDomainAssembly->EnsureLoadLevel (targetLevel);
6032         }
6033
6034         if(pAssembly != pDomainAssembly->GetAssembly())
6035         {
6036             ThrowHR(SECURITY_E_INCOMPATIBLE_SHARE);
6037         }
6038
6039         _ASSERTE (pModule == pAssembly->GetManifestModule());
6040         pDomainFile = pDomainAssembly;
6041     }
6042     else
6043     {
6044         // If the DomainFile already exists, we need to load it to the target level.
6045         pDomainFile->EnsureLoadLevel (targetLevel);
6046     }
6047
6048     RETURN pDomainFile;
6049 }
6050
6051 AppDomain::SharePolicy AppDomain::GetSharePolicy()
6052 {
6053     LIMITED_METHOD_CONTRACT;
6054
6055     return SHARE_POLICY_NEVER;
6056 }
6057 #endif // FEATURE_LOADER_OPTIMIZATION
6058
6059
6060 void AppDomain::CheckForMismatchedNativeImages(AssemblySpec * pSpec, const GUID * pGuid)
6061 {
6062     STANDARD_VM_CONTRACT;
6063
6064     //
6065     // The native images are ever used only for trusted images in CoreCLR.
6066     // We don't wish to open the IL file at runtime so we just forgo any
6067     // eager consistency checking. But we still want to prevent mistmatched
6068     // NGen images from being used. We record all mappings between assembly
6069     // names and MVID, and fail once we detect mismatch.
6070     //
6071
6072     if (pSpec->IsStrongNamed() && pSpec->HasPublicKey())
6073     {
6074         pSpec->ConvertPublicKeyToToken();
6075     }
6076
6077     //
6078     // CoreCLR binder unifies assembly versions. Ignore assembly version here to
6079     // detect more types of potential mismatches.
6080     //
6081     AssemblyMetaDataInternal * pContext = pSpec->GetContext();
6082     pContext->usMajorVersion = (USHORT)-1;
6083     pContext->usMinorVersion = (USHORT)-1;
6084     pContext->usBuildNumber = (USHORT)-1;
6085     pContext->usRevisionNumber = (USHORT)-1;
6086
6087     // Ignore the WinRT type while considering if two assemblies have the same identity.
6088     pSpec->SetWindowsRuntimeType(NULL, NULL);
6089
6090     CrstHolder ch(&m_DomainCrst);
6091
6092     const NativeImageDependenciesEntry * pEntry = m_NativeImageDependencies.Lookup(pSpec);
6093
6094     if (pEntry != NULL)
6095     {
6096         if (*pGuid != pEntry->m_guidMVID)
6097         {
6098             SString msg;
6099             msg.Printf("ERROR: Native images generated against multiple versions of assembly %s. ", pSpec->GetName());
6100             WszOutputDebugString(msg.GetUnicode());
6101             COMPlusThrowNonLocalized(kFileLoadException, msg.GetUnicode());
6102         }
6103     }
6104     else
6105     {
6106         //
6107         // No entry yet - create one
6108         //
6109         AllocMemTracker amTracker;
6110         AllocMemTracker *pamTracker = &amTracker;
6111
6112         NativeImageDependenciesEntry * pNewEntry =
6113             new (pamTracker->Track(GetLowFrequencyHeap()->AllocMem(S_SIZE_T(sizeof(NativeImageDependenciesEntry)))))
6114                 NativeImageDependenciesEntry();
6115
6116         pNewEntry->m_AssemblySpec.CopyFrom(pSpec);
6117         pNewEntry->m_AssemblySpec.CloneFieldsToLoaderHeap(AssemblySpec::ALL_OWNED, GetLowFrequencyHeap(), pamTracker);
6118
6119         pNewEntry->m_guidMVID = *pGuid;
6120
6121         m_NativeImageDependencies.Add(pNewEntry);
6122         amTracker.SuppressRelease();
6123     }
6124 }
6125
6126
6127 void AppDomain::SetupSharedStatics()
6128 {
6129     CONTRACTL
6130     {
6131         THROWS;
6132         GC_TRIGGERS;
6133         MODE_ANY;
6134         INJECT_FAULT(COMPlusThrowOM(););
6135     }
6136     CONTRACTL_END;
6137
6138 #ifndef CROSSGEN_COMPILE
6139     if (NingenEnabled())
6140         return;
6141
6142     LOG((LF_CLASSLOADER, LL_INFO10000, "STATICS: SetupSharedStatics()"));
6143
6144     // don't do any work in init stage. If not init only do work in non-shared case if are default domain
6145     _ASSERTE(!g_fEEInit);
6146
6147     // Because we are allocating/referencing objects, need to be in cooperative mode
6148     GCX_COOP();
6149
6150     static OBJECTHANDLE hSharedStaticsHandle = NULL;
6151
6152     if (hSharedStaticsHandle == NULL) {
6153         // Note that there is no race here since the default domain is always set up first
6154         _ASSERTE(IsDefaultDomain());
6155
6156         MethodTable *pMT = MscorlibBinder::GetClass(CLASS__SHARED_STATICS);
6157         _ASSERTE(pMT->IsClassPreInited());
6158
6159         hSharedStaticsHandle = CreateGlobalHandle(AllocateObject(pMT));
6160     }
6161
6162     DomainLocalModule *pLocalModule;
6163
6164     if (IsSingleAppDomain())
6165     {
6166         pLocalModule = MscorlibBinder::GetModule()->GetDomainLocalModule();
6167     }
6168     else
6169     {
6170         pLocalModule = GetDomainLocalBlock()->GetModuleSlot(
6171             MscorlibBinder::GetModule()->GetModuleIndex());
6172     }
6173
6174     FieldDesc *pFD = MscorlibBinder::GetField(FIELD__SHARED_STATICS__SHARED_STATICS);
6175
6176     OBJECTREF* pHandle = (OBJECTREF*)
6177         ((TADDR)pLocalModule->GetPrecomputedGCStaticsBasePointer()+pFD->GetOffset());
6178     SetObjectReference( pHandle, ObjectFromHandle(hSharedStaticsHandle), this );
6179
6180     // This is a convenient place to initialize String.Empty.
6181     // It is treated as intrinsic by the JIT as so the static constructor would never run.
6182     // Leaving it uninitialized would confuse debuggers.
6183
6184     // String should not have any static constructors.
6185     _ASSERTE(g_pStringClass->IsClassPreInited());
6186
6187     FieldDesc * pEmptyStringFD = MscorlibBinder::GetField(FIELD__STRING__EMPTY);
6188     OBJECTREF* pEmptyStringHandle = (OBJECTREF*)
6189         ((TADDR)pLocalModule->GetPrecomputedGCStaticsBasePointer()+pEmptyStringFD->GetOffset());
6190     SetObjectReference( pEmptyStringHandle, StringObject::GetEmptyString(), this );
6191 #endif // CROSSGEN_COMPILE
6192 }
6193
6194 DomainAssembly * AppDomain::FindAssembly(PEAssembly * pFile, FindAssemblyOptions options/* = FindAssemblyOptions_None*/)
6195 {
6196     CONTRACTL
6197     {
6198         THROWS;
6199         GC_TRIGGERS;
6200         MODE_ANY;
6201         INJECT_FAULT(COMPlusThrowOM(););
6202     }
6203     CONTRACTL_END;
6204
6205     const bool includeFailedToLoad = (options & FindAssemblyOptions_IncludeFailedToLoad) != 0;
6206
6207     if (pFile->HasHostAssembly())
6208     {
6209         DomainAssembly * pDA = FindAssembly(pFile->GetHostAssembly());
6210         if (pDA != nullptr && (pDA->IsLoaded() || (includeFailedToLoad && pDA->IsError())))
6211         {
6212             return pDA;
6213         }
6214         return nullptr;
6215     }
6216
6217     AssemblyIterator i = IterateAssembliesEx((AssemblyIterationFlags)(
6218         kIncludeLoaded |
6219         (includeFailedToLoad ? kIncludeFailedToLoad : 0) |
6220         (pFile->IsIntrospectionOnly() ? kIncludeIntrospection : kIncludeExecution)));
6221     CollectibleAssemblyHolder<DomainAssembly *> pDomainAssembly;
6222
6223     while (i.Next(pDomainAssembly.This()))
6224     {
6225         PEFile * pManifestFile = pDomainAssembly->GetFile();
6226         if (pManifestFile &&
6227             !pManifestFile->IsResource() &&
6228             pManifestFile->Equals(pFile))
6229         {
6230             // Caller already has PEAssembly, so we can give DomainAssembly away freely without AddRef
6231             return pDomainAssembly.Extract();
6232         }
6233     }
6234     return NULL;
6235 }
6236
6237 static const AssemblyIterationFlags STANDARD_IJW_ITERATOR_FLAGS =
6238     (AssemblyIterationFlags)(kIncludeLoaded | kIncludeLoading | kIncludeExecution | kExcludeCollectible);
6239
6240
6241 void AppDomain::SetFriendlyName(LPCWSTR pwzFriendlyName, BOOL fDebuggerCares/*=TRUE*/)
6242 {
6243     CONTRACTL
6244     {
6245         THROWS;
6246         if (GetThread()) {GC_TRIGGERS;} else {DISABLED(GC_NOTRIGGER);}
6247         MODE_ANY;
6248         INJECT_FAULT(COMPlusThrowOM(););
6249     }
6250     CONTRACTL_END;
6251
6252     // Do all computations into a temporary until we're ensured of success
6253     SString tmpFriendlyName;
6254
6255
6256     if (pwzFriendlyName)
6257         tmpFriendlyName.Set(pwzFriendlyName);
6258     else
6259     {
6260         // If there is an assembly, try to get the name from it.
6261         // If no assembly, but if it's the DefaultDomain, then give it a name
6262
6263         if (m_pRootAssembly)
6264         {
6265             tmpFriendlyName.SetUTF8(m_pRootAssembly->GetSimpleName());
6266
6267             SString::Iterator i = tmpFriendlyName.End();
6268             if (tmpFriendlyName.FindBack(i, '.'))
6269                 tmpFriendlyName.Truncate(i);
6270         }
6271         else
6272         {
6273             if (IsDefaultDomain())
6274                 tmpFriendlyName.Set(DEFAULT_DOMAIN_FRIENDLY_NAME);
6275
6276             // This is for the profiler - if they call GetFriendlyName on an AppdomainCreateStarted
6277             // event, then we want to give them a temporary name they can use.
6278             else if (GetId().m_dwId != 0)
6279             {
6280                 tmpFriendlyName.Clear();
6281                 tmpFriendlyName.Printf(W("%s %d"), OTHER_DOMAIN_FRIENDLY_NAME_PREFIX, GetId().m_dwId);
6282             }
6283         }
6284
6285     }
6286
6287     tmpFriendlyName.Normalize();
6288
6289
6290     m_friendlyName = tmpFriendlyName;
6291     m_friendlyName.Normalize();
6292
6293     if(g_pDebugInterface)
6294     {
6295         // update the name in the IPC publishing block
6296         if (SUCCEEDED(g_pDebugInterface->UpdateAppDomainEntryInIPC(this)))
6297         {
6298             // inform the attached debugger that the name of this appdomain has changed.
6299             if (IsDebuggerAttached() && fDebuggerCares)
6300                 g_pDebugInterface->NameChangeEvent(this, NULL);
6301         }
6302     }
6303 }
6304
6305 void AppDomain::ResetFriendlyName(BOOL fDebuggerCares/*=TRUE*/)
6306 {
6307     WRAPPER_NO_CONTRACT;
6308     SetFriendlyName(NULL, fDebuggerCares);
6309 }
6310
6311 LPCWSTR AppDomain::GetFriendlyName(BOOL fDebuggerCares/*=TRUE*/)
6312 {
6313     CONTRACT (LPCWSTR)
6314     {
6315         THROWS;
6316         if (GetThread()) {GC_TRIGGERS;} else {DISABLED(GC_NOTRIGGER);}
6317         MODE_ANY;
6318         POSTCONDITION(CheckPointer(RETVAL, NULL_OK));
6319         INJECT_FAULT(COMPlusThrowOM(););
6320     }
6321     CONTRACT_END;
6322
6323 #if _DEBUG
6324     // Handle NULL this pointer - this happens sometimes when printing log messages
6325     // but in general shouldn't occur in real code
6326     if (this == NULL)
6327         RETURN NULL;
6328 #endif // _DEBUG
6329
6330     if (m_friendlyName.IsEmpty())
6331         SetFriendlyName(NULL, fDebuggerCares);
6332
6333     RETURN m_friendlyName;
6334 }
6335
6336 LPCWSTR AppDomain::GetFriendlyNameForLogging()
6337 {
6338     CONTRACT(LPWSTR)
6339     {
6340         NOTHROW;
6341         GC_NOTRIGGER;
6342         MODE_ANY;
6343         POSTCONDITION(CheckPointer(RETVAL,NULL_OK));
6344     }
6345     CONTRACT_END;
6346 #if _DEBUG
6347     // Handle NULL this pointer - this happens sometimes when printing log messages
6348     // but in general shouldn't occur in real code
6349     if (this == NULL)
6350         RETURN NULL;
6351 #endif // _DEBUG
6352     RETURN (m_friendlyName.IsEmpty() ?W(""):(LPCWSTR)m_friendlyName);
6353 }
6354
6355 LPCWSTR AppDomain::GetFriendlyNameForDebugger()
6356 {
6357     CONTRACT (LPCWSTR)
6358     {
6359         NOTHROW;
6360         if (GetThread()) {GC_TRIGGERS;} else {DISABLED(GC_NOTRIGGER);}
6361         MODE_ANY;
6362         POSTCONDITION(CheckPointer(RETVAL));
6363     }
6364     CONTRACT_END;
6365
6366
6367     if (m_friendlyName.IsEmpty())
6368     {
6369         BOOL fSuccess = FALSE;
6370
6371         EX_TRY
6372         {
6373             SetFriendlyName(NULL);
6374
6375             fSuccess = TRUE;
6376         }
6377         EX_CATCH
6378         {
6379             // Gobble all exceptions.
6380         }
6381         EX_END_CATCH(SwallowAllExceptions);
6382
6383         if (!fSuccess)
6384         {
6385             RETURN W("");
6386         }
6387     }
6388
6389     RETURN m_friendlyName;
6390 }
6391
6392
6393 #endif // !DACCESS_COMPILE
6394
6395 #ifdef DACCESS_COMPILE
6396
6397 PVOID AppDomain::GetFriendlyNameNoSet(bool* isUtf8)
6398 {
6399     SUPPORTS_DAC;
6400
6401     if (!m_friendlyName.IsEmpty())
6402     {
6403         *isUtf8 = false;
6404         return m_friendlyName.DacGetRawContent();
6405     }
6406     else if (m_pRootAssembly)
6407     {
6408         *isUtf8 = true;
6409         return (PVOID)m_pRootAssembly->GetSimpleName();
6410     }
6411     else if (dac_cast<TADDR>(this) ==
6412              dac_cast<TADDR>(SystemDomain::System()->DefaultDomain()))
6413     {
6414         *isUtf8 = false;
6415         return (PVOID)DEFAULT_DOMAIN_FRIENDLY_NAME;
6416     }
6417     else
6418     {
6419         return NULL;
6420     }
6421 }
6422
6423 #endif // DACCESS_COMPILE
6424
6425 #ifndef DACCESS_COMPILE
6426
6427 BOOL AppDomain::AddFileToCache(AssemblySpec* pSpec, PEAssembly *pFile, BOOL fAllowFailure)
6428 {
6429     CONTRACTL
6430     {
6431         THROWS;
6432         GC_TRIGGERS;
6433         MODE_ANY;
6434         PRECONDITION(CheckPointer(pSpec));
6435         // Hosted fusion binder makes an exception here, so we cannot assert.
6436         //PRECONDITION(pSpec->CanUseWithBindingCache());
6437         //PRECONDITION(pFile->CanUseWithBindingCache());
6438         INJECT_FAULT(COMPlusThrowOM(););
6439     }
6440     CONTRACTL_END;
6441
6442     CrstHolder holder(&m_DomainCacheCrst);
6443     // !!! suppress exceptions
6444     if(!m_AssemblyCache.StoreFile(pSpec, pFile) && !fAllowFailure)
6445     {
6446         // TODO: Disabling the below assertion as currently we experience
6447         // inconsistency on resolving the Microsoft.Office.Interop.MSProject.dll
6448         // This causes below assertion to fire and crashes the VS. This issue
6449         // is being tracked with Dev10 Bug 658555. Brought back it when this bug
6450         // is fixed.
6451         // _ASSERTE(FALSE);
6452
6453         EEFileLoadException::Throw(pSpec, FUSION_E_CACHEFILE_FAILED, NULL);
6454     }
6455
6456     return TRUE;
6457 }
6458
6459 BOOL AppDomain::AddAssemblyToCache(AssemblySpec* pSpec, DomainAssembly *pAssembly)
6460 {
6461     CONTRACTL
6462     {
6463         THROWS;
6464         GC_TRIGGERS;
6465         MODE_ANY;
6466         PRECONDITION(CheckPointer(pSpec));
6467         PRECONDITION(CheckPointer(pAssembly));
6468         PRECONDITION(pSpec->CanUseWithBindingCache());
6469         PRECONDITION(pAssembly->CanUseWithBindingCache());
6470         INJECT_FAULT(COMPlusThrowOM(););
6471     }
6472     CONTRACTL_END;
6473
6474     CrstHolder holder(&m_DomainCacheCrst);
6475     // !!! suppress exceptions
6476     BOOL bRetVal = m_AssemblyCache.StoreAssembly(pSpec, pAssembly);
6477     return bRetVal;
6478 }
6479
6480 BOOL AppDomain::AddExceptionToCache(AssemblySpec* pSpec, Exception *ex)
6481 {
6482     CONTRACTL
6483     {
6484         THROWS;
6485         GC_TRIGGERS;
6486         MODE_ANY;
6487         PRECONDITION(CheckPointer(pSpec));
6488         PRECONDITION(pSpec->CanUseWithBindingCache());
6489         INJECT_FAULT(COMPlusThrowOM(););
6490     }
6491     CONTRACTL_END;
6492
6493     if (ex->IsTransient())
6494         return TRUE;
6495
6496     CrstHolder holder(&m_DomainCacheCrst);
6497     // !!! suppress exceptions
6498     return m_AssemblyCache.StoreException(pSpec, ex);
6499 }
6500
6501 void AppDomain::AddUnmanagedImageToCache(LPCWSTR libraryName, HMODULE hMod)
6502 {
6503     CONTRACTL
6504     {
6505         THROWS;
6506         GC_TRIGGERS;
6507         MODE_ANY;
6508         PRECONDITION(CheckPointer(libraryName));
6509         INJECT_FAULT(COMPlusThrowOM(););
6510     }
6511     CONTRACTL_END;
6512     if (libraryName)
6513     {
6514         AssemblySpec spec;
6515         spec.SetCodeBase(libraryName);
6516         m_UnmanagedCache.InsertEntry(&spec, hMod);
6517     }
6518     return ;
6519 }
6520
6521
6522 HMODULE AppDomain::FindUnmanagedImageInCache(LPCWSTR libraryName)
6523 {
6524     CONTRACT(HMODULE)
6525     {
6526         THROWS;
6527         GC_TRIGGERS;
6528         MODE_ANY;
6529         PRECONDITION(CheckPointer(libraryName,NULL_OK));
6530         POSTCONDITION(CheckPointer(RETVAL,NULL_OK));
6531         INJECT_FAULT(COMPlusThrowOM(););
6532     }
6533     CONTRACT_END;
6534     if(libraryName == NULL) RETURN NULL;
6535
6536     AssemblySpec spec;
6537     spec.SetCodeBase(libraryName);
6538     RETURN (HMODULE) m_UnmanagedCache.LookupEntry(&spec, 0);
6539 }
6540
6541
6542 BOOL AppDomain::IsCached(AssemblySpec *pSpec)
6543 {
6544     WRAPPER_NO_CONTRACT;
6545
6546     // Check to see if this fits our rather loose idea of a reference to mscorlib.
6547     // If so, don't use fusion to bind it - do it ourselves.
6548     if (pSpec->IsMscorlib())
6549         return TRUE;
6550
6551     return m_AssemblyCache.Contains(pSpec);
6552 }
6553
6554 void AppDomain::GetCacheAssemblyList(SetSHash<PTR_DomainAssembly>& assemblyList)
6555 {
6556     CrstHolder holder(&m_DomainCacheCrst);
6557     m_AssemblyCache.GetAllAssemblies(assemblyList);
6558 }
6559
6560 PEAssembly* AppDomain::FindCachedFile(AssemblySpec* pSpec, BOOL fThrow /*=TRUE*/)
6561 {
6562     CONTRACTL
6563     {
6564         if (fThrow) {
6565             GC_TRIGGERS;
6566             THROWS;
6567         }
6568         else {
6569             GC_NOTRIGGER;
6570             NOTHROW;
6571         }
6572         MODE_ANY;
6573     }
6574     CONTRACTL_END;
6575
6576     // Check to see if this fits our rather loose idea of a reference to mscorlib.
6577     // If so, don't use fusion to bind it - do it ourselves.
6578     if (fThrow && pSpec->IsMscorlib())
6579     {
6580         CONSISTENCY_CHECK(SystemDomain::System()->SystemAssembly() != NULL);
6581         PEAssembly *pFile = SystemDomain::System()->SystemFile();
6582         pFile->AddRef();
6583         return pFile;
6584     }
6585
6586     return m_AssemblyCache.LookupFile(pSpec, fThrow);
6587 }
6588
6589
6590 BOOL AppDomain::PostBindResolveAssembly(AssemblySpec  *pPrePolicySpec,
6591                                         AssemblySpec  *pPostPolicySpec,
6592                                         HRESULT        hrBindResult,
6593                                         AssemblySpec **ppFailedSpec)
6594 {
6595     STATIC_CONTRACT_THROWS;
6596     STATIC_CONTRACT_GC_TRIGGERS;
6597     PRECONDITION(CheckPointer(pPrePolicySpec));
6598     PRECONDITION(CheckPointer(pPostPolicySpec));
6599     PRECONDITION(CheckPointer(ppFailedSpec));
6600
6601     BOOL fFailure = TRUE;
6602     *ppFailedSpec = pPrePolicySpec;
6603
6604
6605     PEAssemblyHolder result;
6606
6607     if ((EEFileLoadException::GetFileLoadKind(hrBindResult) == kFileNotFoundException) ||
6608         (hrBindResult == FUSION_E_REF_DEF_MISMATCH) ||
6609         (hrBindResult == FUSION_E_INVALID_NAME))
6610     {
6611         result = TryResolveAssembly(*ppFailedSpec, FALSE /* fPreBind */);
6612
6613         if (result != NULL && pPrePolicySpec->CanUseWithBindingCache() && result->CanUseWithBindingCache())
6614         {
6615             fFailure = FALSE;
6616
6617             // Given the post-policy resolve event construction of the CLR binder,
6618             // chained managed resolve events can race with each other, therefore we do allow
6619             // the adding of the result to fail. Checking for already chached specs
6620             // is not an option as it would introduce another race window.
6621             // The binder does a re-fetch of the
6622             // orignal binding spec and therefore will not cause inconsistency here.
6623             // For the purposes of the resolve event, failure to add to the cache still is a success.
6624             AddFileToCache(pPrePolicySpec, result, TRUE /* fAllowFailure */);
6625             if (*ppFailedSpec != pPrePolicySpec && pPostPolicySpec->CanUseWithBindingCache())
6626             {
6627                 AddFileToCache(pPostPolicySpec, result, TRUE /* fAllowFailure */ );
6628             }
6629         }
6630     }
6631
6632     return fFailure;
6633 }
6634
6635 //----------------------------------------------------------------------------------------
6636 // Helper class for hosted binder
6637
6638 class PEAssemblyAsPrivAssemblyInfo : public IUnknownCommon<ICLRPrivAssemblyInfo>
6639 {
6640 public:
6641     //------------------------------------------------------------------------------------
6642     // Ctor
6643
6644     PEAssemblyAsPrivAssemblyInfo(PEAssembly *pPEAssembly)
6645     {
6646         LIMITED_METHOD_CONTRACT;
6647         STATIC_CONTRACT_THROWS;
6648
6649         if (pPEAssembly == nullptr)
6650             ThrowHR(E_UNEXPECTED);
6651
6652         pPEAssembly->AddRef();
6653         m_pPEAssembly = pPEAssembly;
6654     }
6655
6656     //------------------------------------------------------------------------------------
6657     // ICLRPrivAssemblyInfo methods
6658
6659     //------------------------------------------------------------------------------------
6660     STDMETHOD(GetAssemblyName)(
6661         __in  DWORD cchBuffer,
6662         __out_opt LPDWORD pcchBuffer,
6663         __out_ecount_part_opt(cchBuffer, *pcchBuffer) LPWSTR wzBuffer)
6664     {
6665         CONTRACTL
6666         {
6667             NOTHROW;
6668             GC_TRIGGERS;
6669             MODE_ANY;
6670         }
6671         CONTRACTL_END;
6672
6673         HRESULT hr = S_OK;
6674
6675         if ((cchBuffer == 0) != (wzBuffer == nullptr))
6676         {
6677             return E_INVALIDARG;
6678         }
6679
6680         LPCUTF8 szName = m_pPEAssembly->GetSimpleName();
6681
6682         bool bIsAscii;
6683         DWORD cchName;
6684         IfFailRet(FString::Utf8_Unicode_Length(szName, &bIsAscii, &cchName));
6685
6686         if (cchBuffer < cchName + 1)
6687         {
6688             if (pcchBuffer != nullptr)
6689             {
6690                 *pcchBuffer = cchName + 1;
6691             }
6692             return HRESULT_FROM_WIN32(ERROR_INSUFFICIENT_BUFFER);
6693         }
6694         else
6695         {
6696             IfFailRet(FString::Utf8_Unicode(szName, bIsAscii, wzBuffer, cchName));
6697             if (pcchBuffer != nullptr)
6698             {
6699                 *pcchBuffer = cchName;
6700             }
6701             return S_OK;
6702         }
6703     }
6704
6705     //------------------------------------------------------------------------------------
6706     STDMETHOD(GetAssemblyVersion)(
6707         USHORT *pMajor,
6708         USHORT *pMinor,
6709         USHORT *pBuild,
6710         USHORT *pRevision)
6711     {
6712         WRAPPER_NO_CONTRACT;
6713         return m_pPEAssembly->GetVersion(pMajor, pMinor, pBuild, pRevision);
6714     }
6715
6716     //------------------------------------------------------------------------------------
6717     STDMETHOD(GetAssemblyPublicKey)(
6718         DWORD cbBuffer,
6719         LPDWORD pcbBuffer,
6720         BYTE *pbBuffer)
6721     {
6722         STATIC_CONTRACT_LIMITED_METHOD;
6723         STATIC_CONTRACT_CAN_TAKE_LOCK;
6724
6725         VALIDATE_PTR_RET(pcbBuffer);
6726         VALIDATE_CONDITION((pbBuffer == nullptr) == (cbBuffer == 0), return E_INVALIDARG);
6727
6728         HRESULT hr = S_OK;
6729
6730         EX_TRY
6731         {
6732             // Note: PEAssembly::GetPublicKey will return bogus data pointer when *pcbBuffer == 0
6733             LPCVOID pbKey = m_pPEAssembly->GetPublicKey(pcbBuffer);
6734
6735             if (*pcbBuffer != 0)
6736             {
6737                 if (pbBuffer != nullptr && cbBuffer >= *pcbBuffer)
6738                 {
6739                     memcpy(pbBuffer, pbKey, *pcbBuffer);
6740                     hr = S_OK;
6741                 }
6742                 else
6743                 {
6744                     hr = HRESULT_FROM_WIN32(ERROR_INSUFFICIENT_BUFFER);
6745                 }
6746             }
6747             else
6748             {
6749                 hr = S_FALSE; // ==> No public key
6750             }
6751         }
6752         EX_CATCH_HRESULT(hr);
6753
6754         return hr;
6755     }
6756
6757 private:
6758     ReleaseHolder<PEAssembly> m_pPEAssembly;
6759 };
6760
6761 //-----------------------------------------------------------------------------------------------------------------
6762 static HRESULT VerifyBindHelper(
6763     ICLRPrivAssembly *pPrivAssembly,
6764     IAssemblyName *pAssemblyName,
6765     PEAssembly *pPEAssembly)
6766 {
6767     STATIC_CONTRACT_THROWS;
6768     STATIC_CONTRACT_GC_TRIGGERS;
6769
6770     HRESULT hr = S_OK;
6771     // Create an ICLRPrivAssemblyInfo to call to ICLRPrivAssembly::VerifyBind
6772     NewHolder<PEAssemblyAsPrivAssemblyInfo> pPrivAssemblyInfoImpl = new PEAssemblyAsPrivAssemblyInfo(pPEAssembly);
6773     ReleaseHolder<ICLRPrivAssemblyInfo> pPrivAssemblyInfo;
6774     IfFailRet(pPrivAssemblyInfoImpl->QueryInterface(__uuidof(ICLRPrivAssemblyInfo), (LPVOID *)&pPrivAssemblyInfo));
6775     pPrivAssemblyInfoImpl.SuppressRelease();
6776
6777     // Call VerifyBind to give the host a chance to reject the bind based on assembly image contents.
6778     IfFailRet(pPrivAssembly->VerifyBind(pAssemblyName, pPrivAssembly, pPrivAssemblyInfo));
6779
6780     return hr;
6781 }
6782
6783 //-----------------------------------------------------------------------------------------------------------------
6784 HRESULT AppDomain::BindAssemblySpecForHostedBinder(
6785     AssemblySpec *   pSpec,
6786     IAssemblyName *  pAssemblyName,
6787     ICLRPrivBinder * pBinder,
6788     PEAssembly **    ppAssembly)
6789 {
6790     STANDARD_VM_CONTRACT;
6791
6792     PRECONDITION(CheckPointer(pSpec));
6793     PRECONDITION(pSpec->GetAppDomain() == this);
6794     PRECONDITION(CheckPointer(ppAssembly));
6795     PRECONDITION(pSpec->GetCodeBase() == nullptr);
6796
6797     HRESULT hr = S_OK;
6798
6799
6800     // The Fusion binder can throw (to preserve compat, since it will actually perform an assembly
6801     // load as part of it's bind), so we need to be careful here to catch any FileNotFoundException
6802     // objects if fThrowIfNotFound is false.
6803     ReleaseHolder<ICLRPrivAssembly> pPrivAssembly;
6804
6805     // We return HRESULTs here on failure instead of throwing as failures here are not necessarily indicative
6806     // of an actual application problem. Returning an error code is substantially faster than throwing, and
6807     // should be used when possible.
6808     IfFailRet(pBinder->BindAssemblyByName(pAssemblyName, &pPrivAssembly));
6809
6810     IfFailRet(BindHostedPrivAssembly(nullptr, pPrivAssembly, pAssemblyName, ppAssembly));
6811
6812
6813     return S_OK;
6814 }
6815
6816 //-----------------------------------------------------------------------------------------------------------------
6817 HRESULT
6818 AppDomain::BindHostedPrivAssembly(
6819     PEAssembly *       pParentAssembly,
6820     ICLRPrivAssembly * pPrivAssembly,
6821     IAssemblyName *    pAssemblyName,
6822     PEAssembly **      ppAssembly,
6823     BOOL               fIsIntrospectionOnly) // = FALSE
6824 {
6825     STANDARD_VM_CONTRACT;
6826
6827     PRECONDITION(CheckPointer(pPrivAssembly));
6828     PRECONDITION(CheckPointer(ppAssembly));
6829
6830     HRESULT hr = S_OK;
6831
6832     *ppAssembly = nullptr;
6833
6834     // See if result has been previously loaded.
6835     {
6836         DomainAssembly* pDomainAssembly = FindAssembly(pPrivAssembly);
6837         if (pDomainAssembly != nullptr)
6838         {
6839             *ppAssembly = clr::SafeAddRef(pDomainAssembly->GetFile());
6840         }
6841     }
6842
6843     if (*ppAssembly != nullptr)
6844     {   // Already exists: ask the binder to verify and return the assembly.
6845         return VerifyBindHelper(pPrivAssembly, pAssemblyName, *ppAssembly);
6846     }
6847
6848     // Get the IL PEFile.
6849     PEImageHolder pPEImageIL;
6850     {
6851         // Does not already exist, so get the resource for the assembly and load it.
6852         DWORD dwImageType;
6853         ReleaseHolder<ICLRPrivResource> pIResourceIL;
6854
6855         IfFailRet(pPrivAssembly->GetImageResource(ASSEMBLY_IMAGE_TYPE_IL, &dwImageType, &pIResourceIL));
6856         _ASSERTE(dwImageType == ASSEMBLY_IMAGE_TYPE_IL);
6857
6858         pPEImageIL = PEImage::OpenImage(pIResourceIL, MDInternalImport_Default);
6859     }
6860
6861     // See if an NI is available.
6862     DWORD dwAvailableImages;
6863     IfFailRet(pPrivAssembly->GetAvailableImageTypes(&dwAvailableImages));
6864     _ASSERTE(dwAvailableImages & ASSEMBLY_IMAGE_TYPE_IL); // Just double checking that IL bit is always set.
6865
6866     // Get the NI PEFile if available.
6867     PEImageHolder pPEImageNI;
6868     if (dwAvailableImages & ASSEMBLY_IMAGE_TYPE_NATIVE)
6869     {
6870         DWORD dwImageType;
6871         ReleaseHolder<ICLRPrivResource> pIResourceNI;
6872
6873         IfFailRet(pPrivAssembly->GetImageResource(ASSEMBLY_IMAGE_TYPE_NATIVE, &dwImageType, &pIResourceNI));
6874         _ASSERTE(dwImageType == ASSEMBLY_IMAGE_TYPE_NATIVE || FAILED(hr));
6875
6876         pPEImageNI = PEImage::OpenImage(pIResourceNI, MDInternalImport_TrustedNativeImage);
6877     }
6878     _ASSERTE(pPEImageIL != nullptr);
6879
6880     // Create a PEAssembly using the IL and NI images.
6881     PEAssemblyHolder pPEAssembly = PEAssembly::Open(pParentAssembly, pPEImageIL, pPEImageNI, pPrivAssembly, fIsIntrospectionOnly);
6882
6883
6884     // Ask the binder to verify.
6885     IfFailRet(VerifyBindHelper(pPrivAssembly, pAssemblyName, pPEAssembly));
6886
6887     // The result.
6888     *ppAssembly = pPEAssembly.Extract();
6889
6890     return S_OK;
6891 } // AppDomain::BindHostedPrivAssembly
6892
6893 //---------------------------------------------------------------------------------------------------------------------
6894 PEAssembly * AppDomain::BindAssemblySpec(
6895     AssemblySpec *         pSpec,
6896     BOOL                   fThrowOnFileNotFound,
6897     BOOL                   fRaisePrebindEvents,
6898     StackCrawlMark *       pCallerStackMark,
6899     BOOL                   fUseHostBinderIfAvailable)
6900 {
6901     STATIC_CONTRACT_THROWS;
6902     STATIC_CONTRACT_GC_TRIGGERS;
6903     PRECONDITION(CheckPointer(pSpec));
6904     PRECONDITION(pSpec->GetAppDomain() == this);
6905     PRECONDITION(this==::GetAppDomain());
6906
6907     GCX_PREEMP();
6908
6909     BOOL fForceReThrow = FALSE;
6910
6911 #if defined(FEATURE_COMINTEROP)
6912     // Handle WinRT assemblies in the classic/hybrid scenario. If this is an AppX process,
6913     // then this case will be handled by the previous block as part of the full set of
6914     // available binding hosts.
6915     if (pSpec->IsContentType_WindowsRuntime())
6916     {
6917         HRESULT hr = S_OK;
6918
6919         // Get the assembly display name.
6920         ReleaseHolder<IAssemblyName> pAssemblyName;
6921
6922         IfFailThrow(pSpec->CreateFusionName(&pAssemblyName, TRUE, TRUE));
6923
6924
6925         PEAssemblyHolder pAssembly;
6926
6927         EX_TRY
6928         {
6929             hr = BindAssemblySpecForHostedBinder(pSpec, pAssemblyName, m_pWinRtBinder, &pAssembly);
6930             if (FAILED(hr))
6931                 goto EndTry2; // Goto end of try block.
6932 EndTry2:;
6933         }
6934         // The combination of this conditional catch/ the following if statement which will throw reduces the count of exceptions
6935         // thrown in scenarios where the exception does not escape the method. We cannot get rid of the try/catch block, as
6936         // there are cases within some of the clrpriv binder's which throw.
6937         // Note: In theory, FileNotFound should always come here as HRESULT, never as exception.
6938         EX_CATCH_HRESULT_IF(hr,
6939             !fThrowOnFileNotFound && Assembly::FileNotFound(hr))
6940
6941         if (FAILED(hr) && (fThrowOnFileNotFound || !Assembly::FileNotFound(hr)))
6942         {
6943             if (Assembly::FileNotFound(hr))
6944             {
6945                 _ASSERTE(fThrowOnFileNotFound);
6946                 // Uses defaultScope
6947                 EEFileLoadException::Throw(pSpec, hr);
6948             }
6949
6950             // WinRT type bind failures
6951             _ASSERTE(pSpec->IsContentType_WindowsRuntime());
6952             if (hr == HRESULT_FROM_WIN32(APPMODEL_ERROR_NO_PACKAGE)) // Returned by RoResolveNamespace when using 3rd party WinRT types in classic process
6953             {
6954                 if (fThrowOnFileNotFound)
6955                 {   // Throw NotSupportedException (with custom message) wrapped by TypeLoadException to give user type name for diagnostics
6956                     // Note: TypeLoadException is equivalent of FileNotFound in WinRT world
6957                     EEMessageException ex(kNotSupportedException, IDS_EE_WINRT_THIRDPARTY_NOTSUPPORTED);
6958                     EX_THROW_WITH_INNER(EETypeLoadException, (pSpec->GetWinRtTypeNamespace(), pSpec->GetWinRtTypeClassName(), nullptr, nullptr, IDS_EE_WINRT_LOADFAILURE), &ex);
6959                 }
6960             }
6961             else if ((hr == CLR_E_BIND_UNRECOGNIZED_IDENTITY_FORMAT) || // Returned e.g. for WinRT type name without namespace
6962                      (hr == COR_E_PLATFORMNOTSUPPORTED)) // Using WinRT on pre-Win8 OS
6963             {
6964                 if (fThrowOnFileNotFound)
6965                 {   // Throw ArgumentException/PlatformNotSupportedException wrapped by TypeLoadException to give user type name for diagnostics
6966                     // Note: TypeLoadException is equivalent of FileNotFound in WinRT world
6967                     EEMessageException ex(hr);
6968                     EX_THROW_WITH_INNER(EETypeLoadException, (pSpec->GetWinRtTypeNamespace(), pSpec->GetWinRtTypeClassName(), nullptr, nullptr, IDS_EE_WINRT_LOADFAILURE), &ex);
6969                 }
6970             }
6971             else
6972             {
6973                 IfFailThrow(hr);
6974             }
6975         }
6976         _ASSERTE((FAILED(hr) && !fThrowOnFileNotFound) || pAssembly != nullptr);
6977
6978         return pAssembly.Extract();
6979     }
6980     else
6981 #endif // FEATURE_COMINTEROP
6982     if (pSpec->HasUniqueIdentity())
6983     {
6984         HRESULT hrBindResult = S_OK;
6985         PEAssemblyHolder result;
6986
6987
6988         EX_TRY
6989         {
6990             if (!IsCached(pSpec))
6991             {
6992
6993                 {
6994                     bool fAddFileToCache = false;
6995
6996                     BOOL fIsWellKnown = FALSE;
6997
6998                     // Use CoreClr's fusion alternative
6999                     CoreBindResult bindResult;
7000
7001                     pSpec->Bind(this, fThrowOnFileNotFound, &bindResult, FALSE /* fNgenExplicitBind */, FALSE /* fExplicitBindToNativeImage */, pCallerStackMark);
7002                     hrBindResult = bindResult.GetHRBindResult();
7003
7004                     if (bindResult.Found())
7005                     {
7006                         if (SystemDomain::SystemFile() && bindResult.IsMscorlib())
7007                         {
7008                             // Avoid rebinding to another copy of mscorlib
7009                             result = SystemDomain::SystemFile();
7010                             result.SuppressRelease(); // Didn't get a refcount
7011                         }
7012                         else
7013                         {
7014                             // IsSystem on the PEFile should be false, even for mscorlib satellites
7015                             result = PEAssembly::Open(&bindResult,
7016                                                       FALSE, pSpec->IsIntrospectionOnly());
7017                         }
7018                         fAddFileToCache = true;
7019
7020                         // Setup the reference to the binder, which performed the bind, into the AssemblySpec
7021                         ICLRPrivBinder* pBinder = result->GetBindingContext();
7022                         _ASSERTE(pBinder != NULL);
7023                         pSpec->SetBindingContext(pBinder);
7024                     }
7025
7026
7027                     if (fAddFileToCache)
7028                     {
7029
7030
7031                         if (pSpec->CanUseWithBindingCache() && result->CanUseWithBindingCache())
7032                         {
7033                             // Failure to add simply means someone else beat us to it. In that case
7034                             // the FindCachedFile call below (after catch block) will update result
7035                             // to the cached value.
7036                             AddFileToCache(pSpec, result, TRUE /*fAllowFailure*/);
7037                         }
7038                     }
7039                     else if (!fIsWellKnown)
7040                     {
7041                         _ASSERTE(fThrowOnFileNotFound == FALSE);
7042
7043                         // Don't trigger the resolve event for the CoreLib satellite assembly. A misbehaving resolve event may
7044                         // return an assembly that does not match, and this can cause recursive resource lookups during error
7045                         // reporting. The CoreLib satellite assembly is loaded from relative locations based on the culture, see
7046                         // AssemblySpec::Bind().
7047                         if (!pSpec->IsMscorlibSatellite())
7048                         {
7049                             // Trigger the resolve event also for non-throw situation.
7050                             // However, this code path will behave as if the resolve handler has thrown,
7051                             // that is, not trigger an MDA.
7052
7053                             AssemblySpec NewSpec(this);
7054                             AssemblySpec *pFailedSpec = NULL;
7055
7056                             fForceReThrow = TRUE; // Managed resolve event handler can throw
7057
7058                             // Purposly ignore return value
7059                             PostBindResolveAssembly(pSpec, &NewSpec, hrBindResult, &pFailedSpec);
7060                         }
7061                     }
7062                 }
7063             }
7064         }
7065         EX_CATCH
7066         {
7067             Exception *ex = GET_EXCEPTION();
7068
7069             AssemblySpec NewSpec(this);
7070             AssemblySpec *pFailedSpec = NULL;
7071
7072             // Let transient exceptions or managed resolve event handler exceptions propagate
7073             if (ex->IsTransient() || fForceReThrow)
7074             {
7075                 EX_RETHROW;
7076             }
7077
7078             {
7079                 // This is not executed for SO exceptions so we need to disable the backout
7080                 // stack validation to prevent false violations from being reported.
7081                 DISABLE_BACKOUT_STACK_VALIDATION;
7082
7083                 BOOL fFailure = PostBindResolveAssembly(pSpec, &NewSpec, ex->GetHR(), &pFailedSpec);
7084                 if (fFailure)
7085                 {
7086                     BOOL bFileNotFoundException =
7087                         (EEFileLoadException::GetFileLoadKind(ex->GetHR()) == kFileNotFoundException);
7088
7089                     if (!bFileNotFoundException)
7090                     {
7091                         fFailure = AddExceptionToCache(pFailedSpec, ex);
7092                     } // else, fFailure stays TRUE
7093                     // Effectively, fFailure == bFileNotFoundException || AddExceptionToCache(pFailedSpec, ex)
7094
7095                     // Only throw this exception if we are the first in the cache
7096                     if (fFailure)
7097                     {
7098                         //
7099                         // If the BindingFailure MDA is enabled, trigger one for this failure
7100                         // Note: TryResolveAssembly() can also throw if an AssemblyResolve event subscriber throws
7101                         //       and the MDA isn't sent in this case (or for transient failure cases)
7102                         //
7103 #ifdef MDA_SUPPORTED
7104                         MdaBindingFailure* pProbe = MDA_GET_ASSISTANT(BindingFailure);
7105                         if (pProbe)
7106                         {
7107                             // Transition to cooperative GC mode before using any OBJECTREFs.
7108                             GCX_COOP();
7109
7110                             OBJECTREF exceptionObj = GET_THROWABLE();
7111                             GCPROTECT_BEGIN(exceptionObj)
7112                             {
7113                                 pProbe->BindFailed(pFailedSpec, &exceptionObj);
7114                             }
7115                             GCPROTECT_END();
7116                         }
7117 #endif
7118
7119                         // In the same cases as for the MDA, store the failure information for DAC to read
7120                         if (IsDebuggerAttached()) {
7121                             FailedAssembly *pFailed = new FailedAssembly();
7122                             pFailed->Initialize(pFailedSpec, ex);
7123                             IfFailThrow(m_failedAssemblies.Append(pFailed));
7124                         }
7125
7126                         if (!bFileNotFoundException || fThrowOnFileNotFound)
7127                         {
7128
7129                             // V1.1 App-compatibility workaround. See VSW530166 if you want to whine about it.
7130                             //
7131                             // In Everett, if we failed to download an assembly because of a broken network cable,
7132                             // we returned a FileNotFoundException with a COR_E_FILENOTFOUND hr embedded inside
7133                             // (which would be exposed when marshaled to native.)
7134                             //
7135                             // In Whidbey, we now set the more appropriate INET_E_RESOURCE_NOT_FOUND hr. But
7136                             // the online/offline switch code in VSTO for Everett hardcoded a check for
7137                             // COR_E_FILENOTFOUND.
7138                             //
7139                             // So now, to keep that code from breaking, we have to remap INET_E_RESOURCE_NOT_FOUND
7140                             // back to COR_E_FILENOTFOUND. We're doing it here rather down in Fusion so as to affect
7141                             // the least number of callers.
7142
7143                             if (ex->GetHR() == INET_E_RESOURCE_NOT_FOUND)
7144                             {
7145                                 EEFileLoadException::Throw(pFailedSpec, COR_E_FILENOTFOUND, ex);
7146                             }
7147
7148                             if (EEFileLoadException::CheckType(ex))
7149                             {
7150                                 if (pFailedSpec == pSpec)
7151                                 {
7152                                     EX_RETHROW; //preserve the information
7153                                 }
7154                                 else
7155                                 {
7156                                     StackSString exceptionDisplayName, failedSpecDisplayName;
7157
7158                                     ((EEFileLoadException*)ex)->GetName(exceptionDisplayName);
7159                                     pFailedSpec->GetFileOrDisplayName(0, failedSpecDisplayName);
7160
7161                                     if (exceptionDisplayName.CompareCaseInsensitive(failedSpecDisplayName) == 0)
7162                                     {
7163                                         EX_RETHROW; // Throw the original exception. Otherwise, we'd throw an exception that contains the same message twice.
7164                                     }
7165                                 }
7166                             }
7167
7168                             EEFileLoadException::Throw(pFailedSpec, ex->GetHR(), ex);
7169                         }
7170
7171                     }
7172                 }
7173             }
7174         }
7175         EX_END_CATCH(RethrowTerminalExceptions);
7176
7177         // Now, if it's a cacheable bind we need to re-fetch the result from the cache, as we may have been racing with another
7178         // thread to store our result.  Note that we may throw from here, if there is a cached exception.
7179         // This will release the refcount of the current result holder (if any), and will replace
7180         // it with a non-addref'ed result
7181         if (pSpec->CanUseWithBindingCache() && (result== NULL || result->CanUseWithBindingCache()))
7182         {
7183             result = FindCachedFile(pSpec);
7184
7185             if (result != NULL)
7186                 result->AddRef();
7187         }
7188
7189         return result.Extract();
7190     }
7191     else
7192     {
7193         // Unsupported content type
7194         if (fThrowOnFileNotFound)
7195         {
7196             ThrowHR(COR_E_BADIMAGEFORMAT);
7197         }
7198         return nullptr;
7199     }
7200 } // AppDomain::BindAssemblySpec
7201
7202
7203
7204 PEAssembly *AppDomain::TryResolveAssembly(AssemblySpec *pSpec, BOOL fPreBind)
7205 {
7206     STATIC_CONTRACT_THROWS;
7207     STATIC_CONTRACT_GC_TRIGGERS;
7208     STATIC_CONTRACT_MODE_ANY;
7209
7210     PEAssembly *result = NULL;
7211
7212     EX_TRY
7213     {
7214         result = pSpec->ResolveAssemblyFile(this, fPreBind);
7215     }
7216     EX_HOOK
7217     {
7218         Exception *pEx = GET_EXCEPTION();
7219
7220         if (!pEx->IsTransient())
7221         {
7222             AddExceptionToCache(pSpec, pEx);
7223             if (!EEFileLoadException::CheckType(pEx))
7224                 EEFileLoadException::Throw(pSpec, pEx->GetHR(), pEx);
7225         }
7226     }
7227     EX_END_HOOK;
7228
7229     return result;
7230 }
7231
7232
7233 ULONG AppDomain::AddRef()
7234 {
7235     LIMITED_METHOD_CONTRACT;
7236     return InterlockedIncrement(&m_cRef);
7237 }
7238
7239 ULONG AppDomain::Release()
7240 {
7241     CONTRACTL
7242     {
7243         NOTHROW;
7244         GC_TRIGGERS;
7245         MODE_ANY;
7246         PRECONDITION(m_cRef > 0);
7247     }
7248     CONTRACTL_END;
7249
7250     ULONG   cRef = InterlockedDecrement(&m_cRef);
7251     if (!cRef)
7252     {
7253         _ASSERTE (m_Stage == STAGE_CREATING || m_Stage == STAGE_CLOSED);
7254         ADID adid=GetId();
7255         delete this;
7256         TESTHOOKCALL(AppDomainDestroyed(adid.m_dwId));
7257     }
7258     return (cRef);
7259 }
7260
7261
7262 AppDomain* AppDomain::s_pAppDomainToRaiseUnloadEvent;
7263 BOOL AppDomain::s_fProcessUnloadDomainEvent = FALSE;
7264
7265 #ifndef CROSSGEN_COMPILE
7266
7267 void AppDomain::RaiseUnloadDomainEvent_Wrapper(LPVOID ptr)
7268 {
7269     CONTRACTL
7270     {
7271         THROWS;
7272         MODE_COOPERATIVE;
7273         GC_TRIGGERS;
7274         INJECT_FAULT(COMPlusThrowOM(););
7275         SO_INTOLERANT;
7276     }
7277     CONTRACTL_END;
7278
7279     AppDomain* pDomain = (AppDomain *) ptr;
7280     pDomain->RaiseUnloadDomainEvent();
7281 }
7282
7283 void AppDomain::ProcessUnloadDomainEventOnFinalizeThread()
7284 {
7285     CONTRACTL
7286     {
7287         THROWS;
7288         GC_TRIGGERS;
7289         MODE_COOPERATIVE;
7290     }
7291     CONTRACTL_END;
7292     Thread *pThread = GetThread();
7293     _ASSERTE (pThread && IsFinalizerThread());
7294
7295     // if we are not unloading domain now, do not process the event
7296     if (SystemDomain::AppDomainBeingUnloaded() == NULL)
7297     {
7298         s_pAppDomainToRaiseUnloadEvent->SetStage(STAGE_UNLOAD_REQUESTED);
7299         s_pAppDomainToRaiseUnloadEvent->EnableADUnloadWorker(
7300             s_pAppDomainToRaiseUnloadEvent->IsRudeUnload()?EEPolicy::ADU_Rude:EEPolicy::ADU_Safe);
7301         FastInterlockExchangePointer(&s_pAppDomainToRaiseUnloadEvent, NULL);
7302         return;
7303     }
7304     FastInterlockExchange((LONG*)&s_fProcessUnloadDomainEvent, TRUE);
7305     AppDomain::EnableADUnloadWorkerForFinalizer();
7306     pThread->SetThreadStateNC(Thread::TSNC_RaiseUnloadEvent);
7307     s_pAppDomainToRaiseUnloadEvent->RaiseUnloadDomainEvent();
7308     pThread->ResetThreadStateNC(Thread::TSNC_RaiseUnloadEvent);
7309     s_pAppDomainToRaiseUnloadEvent->EnableADUnloadWorker(
7310         s_pAppDomainToRaiseUnloadEvent->IsRudeUnload()?EEPolicy::ADU_Rude:EEPolicy::ADU_Safe);
7311     FastInterlockExchangePointer(&s_pAppDomainToRaiseUnloadEvent, NULL);
7312     FastInterlockExchange((LONG*)&s_fProcessUnloadDomainEvent, FALSE);
7313
7314     if (pThread->IsAbortRequested())
7315     {
7316         pThread->UnmarkThreadForAbort(Thread::TAR_Thread);
7317     }
7318 }
7319
7320 void AppDomain::RaiseUnloadDomainEvent()
7321 {
7322     CONTRACTL
7323     {
7324         THROWS;
7325         MODE_COOPERATIVE;
7326         GC_TRIGGERS;
7327         SO_INTOLERANT;
7328     }
7329     CONTRACTL_END;
7330
7331     Thread *pThread = GetThread();
7332     if (this != pThread->GetDomain())
7333     {
7334         pThread->DoADCallBack(this, AppDomain::RaiseUnloadDomainEvent_Wrapper, this,ADV_FINALIZER|ADV_COMPILATION);
7335     }
7336     else
7337     {
7338         struct _gc
7339         {
7340             APPDOMAINREF Domain;
7341             OBJECTREF    Delegate;
7342         } gc;
7343         ZeroMemory(&gc, sizeof(gc));
7344
7345         GCPROTECT_BEGIN(gc);
7346         gc.Domain = (APPDOMAINREF) GetRawExposedObject();
7347         if (gc.Domain != NULL)
7348         {
7349             gc.Delegate = gc.Domain->m_pDomainUnloadEventHandler;
7350             if (gc.Delegate != NULL)
7351                 DistributeEvent(&gc.Delegate, (OBJECTREF *) &gc.Domain);
7352         }
7353         GCPROTECT_END();
7354     }
7355 }
7356
7357 void AppDomain::RaiseLoadingAssemblyEvent(DomainAssembly *pAssembly)
7358 {
7359     CONTRACTL
7360     {
7361         NOTHROW;
7362         GC_TRIGGERS;
7363         PRECONDITION(this == GetAppDomain());
7364         MODE_ANY;
7365     }
7366     CONTRACTL_END;
7367
7368     GCX_COOP();
7369     FAULT_NOT_FATAL();
7370     OVERRIDE_TYPE_LOAD_LEVEL_LIMIT(CLASS_LOADED);
7371
7372     EX_TRY
7373     {
7374         struct _gc {
7375             APPDOMAINREF AppDomainRef;
7376             OBJECTREF    orThis;
7377         } gc;
7378         ZeroMemory(&gc, sizeof(gc));
7379
7380         if ((gc.AppDomainRef = (APPDOMAINREF) GetRawExposedObject()) != NULL) {
7381             if (gc.AppDomainRef->m_pAssemblyEventHandler != NULL)
7382             {
7383                 ARG_SLOT args[2];
7384                 GCPROTECT_BEGIN(gc);
7385
7386                 gc.orThis = pAssembly->GetExposedAssemblyObject();
7387
7388                 MethodDescCallSite  onAssemblyLoad(METHOD__APP_DOMAIN__ON_ASSEMBLY_LOAD, &gc.orThis);
7389
7390                 // GetExposedAssemblyObject may cause a gc, so call this before filling args[0]
7391                 args[1] = ObjToArgSlot(gc.orThis);
7392                 args[0] = ObjToArgSlot(gc.AppDomainRef);
7393
7394                 onAssemblyLoad.Call(args);
7395
7396                 GCPROTECT_END();
7397             }
7398         }
7399     }
7400     EX_CATCH
7401     {
7402     }
7403     EX_END_CATCH(SwallowAllExceptions);
7404 }
7405
7406
7407 BOOL AppDomain::OnUnhandledException(OBJECTREF *pThrowable, BOOL isTerminating/*=TRUE*/)
7408 {
7409     STATIC_CONTRACT_NOTHROW;
7410     STATIC_CONTRACT_GC_TRIGGERS;
7411     STATIC_CONTRACT_MODE_ANY;
7412
7413     BOOL retVal= FALSE;
7414
7415     GCX_COOP();
7416
7417     // The Everett behavior was to send the unhandled exception event only to the Default
7418     // AppDomain (since that's the only place that exceptions actually went unhandled).
7419     //
7420     // During Whidbey development, we broadcast the event to all AppDomains in the process.
7421     //
7422     // But the official shipping Whidbey behavior is that the unhandled exception event is
7423     // sent to the Default AppDomain and to whatever AppDomain the exception went unhandled
7424     // in.  To achieve this, we declare the exception to be unhandled *BEFORE* we marshal
7425     // it back to the Default AppDomain at the base of the Finalizer, threadpool and managed
7426     // threads.
7427     //
7428     // The rationale for sending the event to the Default AppDomain as well as the one the
7429     // exception went unhandled in is:
7430     //
7431     // 1)  This is compatible with the pre-Whidbey behavior, where only the Default AppDomain
7432     //     received the notification.
7433     //
7434     // 2)  This is convenient for hosts, which don't want to bother injecting listeners into
7435     //     every single AppDomain.
7436
7437     AppDomain *pAppDomain = GetAppDomain();
7438     OBJECTREF orSender = 0;
7439
7440     GCPROTECT_BEGIN(orSender);
7441
7442     orSender = pAppDomain->GetRawExposedObject();
7443
7444     retVal = pAppDomain->RaiseUnhandledExceptionEventNoThrow(&orSender, pThrowable, isTerminating);
7445
7446     GCPROTECT_END();
7447
7448     return retVal;
7449 }
7450
7451
7452 // Move outside of the AppDomain iteration, to avoid issues with the GC Frames being outside
7453 // the domain transition.  This is a chronic issue that causes us to report roots for an AppDomain
7454 // after we have left it.  This causes problems with AppDomain unloading that we only find
7455 // with stress coverage..
7456 void AppDomain::RaiseOneExitProcessEvent()
7457 {
7458     CONTRACTL
7459     {
7460         THROWS;
7461         GC_TRIGGERS;
7462         MODE_COOPERATIVE;
7463     }
7464     CONTRACTL_END;
7465
7466     struct _gc
7467     {
7468         APPDOMAINREF Domain;
7469         OBJECTREF    Delegate;
7470     } gc;
7471     ZeroMemory(&gc, sizeof(gc));
7472
7473     GCPROTECT_BEGIN(gc);
7474     gc.Domain = (APPDOMAINREF) SystemDomain::GetCurrentDomain()->GetRawExposedObject();
7475     if (gc.Domain != NULL)
7476     {
7477         gc.Delegate = gc.Domain->m_pProcessExitEventHandler;
7478         if (gc.Delegate != NULL)
7479             DistributeEvent(&gc.Delegate, (OBJECTREF *) &gc.Domain);
7480     }
7481     GCPROTECT_END();
7482 }
7483
7484 // Local wrapper used in AppDomain::RaiseExitProcessEvent,
7485 // introduced solely to avoid stack overflow because of _alloca in the loop.
7486 // It's just factored out body of the loop, but it has to be a member method of AppDomain,
7487 // because it calls private RaiseOneExitProcessEvent
7488 /*static*/ void AppDomain::RaiseOneExitProcessEvent_Wrapper(AppDomainIterator* pi)
7489 {
7490     STATIC_CONTRACT_MODE_COOPERATIVE;
7491     STATIC_CONTRACT_THROWS;
7492     STATIC_CONTRACT_GC_TRIGGERS;
7493
7494     ENTER_DOMAIN_PTR(pi->GetDomain(), ADV_ITERATOR)
7495     AppDomain::RaiseOneExitProcessEvent();
7496     END_DOMAIN_TRANSITION;
7497 }
7498
7499 static LONG s_ProcessedExitProcessEventCount = 0;
7500
7501 LONG GetProcessedExitProcessEventCount()
7502 {
7503     LIMITED_METHOD_CONTRACT;
7504     return s_ProcessedExitProcessEventCount;
7505 }
7506
7507 void AppDomain::RaiseExitProcessEvent()
7508 {
7509     if (!g_fEEStarted)
7510         return;
7511
7512     STATIC_CONTRACT_MODE_COOPERATIVE;
7513     STATIC_CONTRACT_THROWS;
7514     STATIC_CONTRACT_GC_TRIGGERS;
7515
7516     // Only finalizer thread during shutdown can call this function.
7517     _ASSERTE ((g_fEEShutDown&ShutDown_Finalize1) && GetThread() == FinalizerThread::GetFinalizerThread());
7518
7519     _ASSERTE (GetThread()->PreemptiveGCDisabled());
7520
7521     _ASSERTE (GetThread()->GetDomain()->IsDefaultDomain());
7522
7523     AppDomainIterator i(TRUE);
7524     while (i.Next())
7525     {
7526         RaiseOneExitProcessEvent_Wrapper(&i);
7527         FastInterlockIncrement(&s_ProcessedExitProcessEventCount);
7528     }
7529 }
7530
7531
7532 BOOL
7533 AppDomain::RaiseUnhandledExceptionEventNoThrow(OBJECTREF *pSender, OBJECTREF *pThrowable, BOOL isTerminating)
7534 {
7535     CONTRACTL
7536     {
7537         NOTHROW;
7538         GC_TRIGGERS;
7539         MODE_COOPERATIVE;
7540     }
7541     CONTRACTL_END;
7542     BOOL bRetVal=FALSE;
7543
7544     EX_TRY
7545     {
7546         bRetVal = RaiseUnhandledExceptionEvent(pSender, pThrowable, isTerminating);
7547     }
7548     EX_CATCH
7549     {
7550     }
7551     EX_END_CATCH(SwallowAllExceptions)  // Swallow any errors.
7552     return bRetVal;
7553
7554 }
7555
7556 BOOL
7557 AppDomain::HasUnhandledExceptionEventHandler()
7558 {
7559     CONTRACTL
7560     {
7561         MODE_COOPERATIVE;
7562         GC_NOTRIGGER; //essential
7563         NOTHROW;
7564     }
7565     CONTRACTL_END;
7566     if (!CanThreadEnter(GetThread()))
7567         return FALSE;
7568     if (GetRawExposedObject()==NULL)
7569         return FALSE;
7570     return (((APPDOMAINREF)GetRawExposedObject())->m_pUnhandledExceptionEventHandler!=NULL);
7571 }
7572
7573 BOOL
7574 AppDomain::RaiseUnhandledExceptionEvent(OBJECTREF *pSender, OBJECTREF *pThrowable, BOOL isTerminating)
7575 {
7576     CONTRACTL
7577     {
7578         THROWS;
7579         GC_TRIGGERS;
7580         MODE_COOPERATIVE;
7581         INJECT_FAULT(COMPlusThrowOM(););
7582     }
7583     CONTRACTL_END;
7584
7585     if (!HasUnhandledExceptionEventHandler())
7586         return FALSE;
7587
7588     BOOL result = FALSE;
7589
7590     _ASSERTE(pThrowable != NULL && IsProtectedByGCFrame(pThrowable));
7591     _ASSERTE(pSender    != NULL && IsProtectedByGCFrame(pSender));
7592
7593     _ASSERTE(this == GetThread()->GetDomain());
7594
7595
7596     OBJECTREF orDelegate = NULL;
7597
7598     GCPROTECT_BEGIN(orDelegate);
7599
7600     APPDOMAINREF orAD = (APPDOMAINREF) GetAppDomain()->GetRawExposedObject();
7601
7602     if (orAD != NULL)
7603     {
7604         orDelegate = orAD->m_pUnhandledExceptionEventHandler;
7605         if (orDelegate != NULL)
7606         {
7607             result = TRUE;
7608             DistributeUnhandledExceptionReliably(&orDelegate, pSender, pThrowable, isTerminating);
7609         }
7610     }
7611     GCPROTECT_END();
7612     return result;
7613 }
7614
7615
7616
7617 #endif // CROSSGEN_COMPILE
7618
7619 // You must be in the correct context before calling this
7620 // routine. Therefore, it is only good for initializing the
7621 // default domain.
7622 void AppDomain::InitializeDomainContext(BOOL allowRedirects,
7623                                         LPCWSTR pwszPath,
7624                                         LPCWSTR pwszConfig)
7625 {
7626     CONTRACTL
7627     {
7628         MODE_COOPERATIVE;
7629         GC_TRIGGERS;
7630         THROWS;
7631         INJECT_FAULT(COMPlusThrowOM(););
7632     }
7633     CONTRACTL_END;
7634
7635     if (NingenEnabled())
7636     {
7637
7638         CreateFusionContext();
7639
7640         return;
7641     }
7642
7643 #ifndef CROSSGEN_COMPILE
7644     struct _gc {
7645         STRINGREF pFilePath;
7646         STRINGREF pConfig;
7647         OBJECTREF ref;
7648         PTRARRAYREF propertyNames;
7649         PTRARRAYREF propertyValues;
7650     } gc;
7651     ZeroMemory(&gc, sizeof(gc));
7652
7653     GCPROTECT_BEGIN(gc);
7654     if(pwszPath)
7655     {
7656         gc.pFilePath = StringObject::NewString(pwszPath);
7657     }
7658
7659     if(pwszConfig)
7660     {
7661         gc.pConfig = StringObject::NewString(pwszConfig);
7662     }
7663
7664
7665     if ((gc.ref = GetExposedObject()) != NULL)
7666     {
7667         MethodDescCallSite setupDomain(METHOD__APP_DOMAIN__SETUP_DOMAIN);
7668
7669         ARG_SLOT args[] =
7670         {
7671             ObjToArgSlot(gc.ref),
7672             BoolToArgSlot(allowRedirects),
7673             ObjToArgSlot(gc.pFilePath),
7674             ObjToArgSlot(gc.pConfig),
7675             ObjToArgSlot(gc.propertyNames),
7676             ObjToArgSlot(gc.propertyValues)
7677         };
7678         setupDomain.Call(args);
7679     }
7680     GCPROTECT_END();
7681 #endif // CROSSGEN_COMPILE
7682 }
7683
7684
7685 IUnknown *AppDomain::CreateFusionContext()
7686 {
7687     CONTRACT(IUnknown *)
7688     {
7689         GC_TRIGGERS;
7690         THROWS;
7691         MODE_ANY;
7692         POSTCONDITION(CheckPointer(RETVAL));
7693         INJECT_FAULT(COMPlusThrowOM(););
7694     }
7695     CONTRACT_END;
7696
7697     if (!m_pFusionContext)
7698     {
7699         ETWOnStartup (FusionAppCtx_V1, FusionAppCtxEnd_V1);
7700         CLRPrivBinderCoreCLR *pTPABinder = NULL;
7701
7702         GCX_PREEMP();
7703
7704         // Initialize the assembly binder for the default context loads for CoreCLR.
7705         IfFailThrow(CCoreCLRBinderHelper::DefaultBinderSetupContext(GetId().m_dwId, &pTPABinder));
7706         m_pFusionContext = reinterpret_cast<IUnknown *>(pTPABinder);
7707
7708         // By default, initial binding context setup for CoreCLR is also the TPABinding context
7709         (m_pTPABinderContext = pTPABinder)->AddRef();
7710
7711     }
7712
7713     RETURN m_pFusionContext;
7714 }
7715
7716
7717
7718 //---------------------------------------------------------------------------------------
7719 //
7720 // AppDomain::IsDebuggerAttached - is a debugger attached to this process
7721 //
7722 // Arguments:
7723 //    None
7724 //
7725 // Return Value:
7726 //    TRUE if a debugger is attached to this process, FALSE otherwise.
7727 //
7728 // Notes:
7729 //    This is identical to CORDebuggerAttached.  This exists idependantly for legacy reasons - we used to
7730 //    support attaching to individual AppDomains.  This should probably go away eventually.
7731 //
7732
7733 BOOL AppDomain::IsDebuggerAttached()
7734 {
7735     LIMITED_METHOD_CONTRACT;
7736
7737     if (CORDebuggerAttached())
7738     {
7739         return TRUE;
7740     }
7741     else
7742     {
7743         return FALSE;
7744     }
7745 }
7746
7747 #ifdef DEBUGGING_SUPPORTED
7748
7749 // This is called from the debugger to request notification events from
7750 // Assemblies, Modules, Types in this appdomain.
7751 BOOL AppDomain::NotifyDebuggerLoad(int flags, BOOL attaching)
7752 {
7753     WRAPPER_NO_CONTRACT;
7754     BOOL result = FALSE;
7755
7756     if (!attaching && !IsDebuggerAttached())
7757         return FALSE;
7758
7759     AssemblyIterator i;
7760
7761     // Attach to our assemblies
7762     LOG((LF_CORDB, LL_INFO100, "AD::NDA: Iterating assemblies\n"));
7763     i = IterateAssembliesEx((AssemblyIterationFlags)(kIncludeLoaded | kIncludeLoading | kIncludeExecution));
7764     CollectibleAssemblyHolder<DomainAssembly *> pDomainAssembly;
7765     while (i.Next(pDomainAssembly.This()))
7766     {
7767         result = (pDomainAssembly->NotifyDebuggerLoad(flags, attaching) ||
7768                   result);
7769     }
7770
7771     return result;
7772 }
7773
7774 void AppDomain::NotifyDebuggerUnload()
7775 {
7776     WRAPPER_NO_CONTRACT;
7777     if (!IsDebuggerAttached())
7778         return;
7779
7780     LOG((LF_CORDB, LL_INFO10, "AD::NDD domain [%d] %#08x %ls\n",
7781          GetId().m_dwId, this, GetFriendlyNameForLogging()));
7782
7783     LOG((LF_CORDB, LL_INFO100, "AD::NDD: Interating domain bound assemblies\n"));
7784     AssemblyIterator i = IterateAssembliesEx((AssemblyIterationFlags)(kIncludeLoaded |  kIncludeLoading  | kIncludeExecution));
7785     CollectibleAssemblyHolder<DomainAssembly *> pDomainAssembly;
7786
7787     // Detach from our assemblies
7788     while (i.Next(pDomainAssembly.This()))
7789     {
7790         LOG((LF_CORDB, LL_INFO100, "AD::NDD: Iterating assemblies\n"));
7791         pDomainAssembly->NotifyDebuggerUnload();
7792     }
7793 }
7794 #endif // DEBUGGING_SUPPORTED
7795
7796 void AppDomain::SetSystemAssemblyLoadEventSent(BOOL fFlag)
7797 {
7798     LIMITED_METHOD_CONTRACT;
7799     if (fFlag == TRUE)
7800         m_dwFlags |= LOAD_SYSTEM_ASSEMBLY_EVENT_SENT;
7801     else
7802         m_dwFlags &= ~LOAD_SYSTEM_ASSEMBLY_EVENT_SENT;
7803 }
7804
7805 BOOL AppDomain::WasSystemAssemblyLoadEventSent(void)
7806 {
7807     LIMITED_METHOD_CONTRACT;
7808     return ((m_dwFlags & LOAD_SYSTEM_ASSEMBLY_EVENT_SENT) == 0) ? FALSE : TRUE;
7809 }
7810
7811 #ifndef CROSSGEN_COMPILE
7812 // U->M thunks created in this domain and not associated with a delegate.
7813 UMEntryThunkCache *AppDomain::GetUMEntryThunkCache()
7814 {
7815     CONTRACTL
7816     {
7817         THROWS;
7818         GC_TRIGGERS;
7819         MODE_ANY;
7820         INJECT_FAULT(COMPlusThrowOM(););
7821     }
7822     CONTRACTL_END;
7823
7824     if (!m_pUMEntryThunkCache)
7825     {
7826         UMEntryThunkCache *pUMEntryThunkCache = new UMEntryThunkCache(this);
7827
7828         if (FastInterlockCompareExchangePointer(&m_pUMEntryThunkCache, pUMEntryThunkCache, NULL) != NULL)
7829         {
7830             // some thread swooped in and set the field
7831             delete pUMEntryThunkCache;
7832         }
7833     }
7834     _ASSERTE(m_pUMEntryThunkCache);
7835     return m_pUMEntryThunkCache;
7836 }
7837
7838 #ifdef FEATURE_COMINTEROP
7839
7840 ComCallWrapperCache *AppDomain::GetComCallWrapperCache()
7841 {
7842     CONTRACTL
7843     {
7844         THROWS;
7845         GC_TRIGGERS;
7846         MODE_ANY;
7847         INJECT_FAULT(COMPlusThrowOM(););
7848     }
7849     CONTRACTL_END;
7850
7851     if (! m_pComCallWrapperCache)
7852     {
7853         BaseDomain::LockHolder lh(this);
7854
7855         if (! m_pComCallWrapperCache)
7856             m_pComCallWrapperCache = ComCallWrapperCache::Create(this);
7857     }
7858     _ASSERTE(m_pComCallWrapperCache);
7859     return m_pComCallWrapperCache;
7860 }
7861
7862 RCWRefCache *AppDomain::GetRCWRefCache()
7863 {
7864     CONTRACT(RCWRefCache*)
7865     {
7866         THROWS;
7867         GC_NOTRIGGER;
7868         MODE_ANY;
7869         POSTCONDITION(CheckPointer(RETVAL));
7870     }
7871     CONTRACT_END;
7872
7873     if (!m_pRCWRefCache) {
7874         NewHolder<RCWRefCache> pRCWRefCache = new RCWRefCache(this);
7875         if (FastInterlockCompareExchangePointer(&m_pRCWRefCache, (RCWRefCache *)pRCWRefCache, NULL) == NULL)
7876         {
7877             pRCWRefCache.SuppressRelease();
7878         }
7879     }
7880     RETURN m_pRCWRefCache;
7881 }
7882
7883 RCWCache *AppDomain::CreateRCWCache()
7884 {
7885     CONTRACT(RCWCache*)
7886     {
7887         THROWS;
7888         GC_TRIGGERS;
7889         MODE_ANY;
7890         INJECT_FAULT(COMPlusThrowOM(););
7891         POSTCONDITION(CheckPointer(RETVAL));
7892     }
7893     CONTRACT_END;
7894
7895     // Initialize the global RCW cleanup list here as well. This is so that it
7896     // it guaranteed to exist if any RCW's are created, but it is not created
7897     // unconditionally.
7898     if (!g_pRCWCleanupList)
7899     {
7900         SystemDomain::LockHolder lh;
7901
7902         if (!g_pRCWCleanupList)
7903             g_pRCWCleanupList = new RCWCleanupList();
7904     }
7905     _ASSERTE(g_pRCWCleanupList);
7906
7907     {
7908         BaseDomain::LockHolder lh(this);
7909
7910         if (!m_pRCWCache)
7911             m_pRCWCache = new RCWCache(this);
7912     }
7913
7914     RETURN m_pRCWCache;
7915 }
7916
7917 void AppDomain::ReleaseRCWs(LPVOID pCtxCookie)
7918 {
7919     WRAPPER_NO_CONTRACT;
7920     if (m_pRCWCache)
7921         m_pRCWCache->ReleaseWrappersWorker(pCtxCookie);
7922
7923     RemoveWinRTFactoryObjects(pCtxCookie);
7924 }
7925
7926 void AppDomain::DetachRCWs()
7927 {
7928     WRAPPER_NO_CONTRACT;
7929     if (m_pRCWCache)
7930         m_pRCWCache->DetachWrappersWorker();
7931 }
7932
7933 #endif // FEATURE_COMINTEROP
7934
7935 BOOL AppDomain::CanThreadEnter(Thread *pThread)
7936 {
7937     WRAPPER_NO_CONTRACT;
7938
7939     if (m_Stage < STAGE_EXITED)
7940         return TRUE;
7941
7942     if (pThread == SystemDomain::System()->GetUnloadingThread())
7943         return m_Stage < STAGE_FINALIZING;
7944     if (pThread == FinalizerThread::GetFinalizerThread())
7945         return m_Stage < STAGE_FINALIZED;
7946
7947     return FALSE;
7948 }
7949
7950 void AppDomain::AllowThreadEntrance(AppDomain * pApp)
7951 {
7952     CONTRACTL
7953     {
7954         NOTHROW;
7955         GC_TRIGGERS;
7956         MODE_ANY;
7957         FORBID_FAULT;
7958         PRECONDITION(CheckPointer(pApp));
7959     }
7960     CONTRACTL_END;
7961
7962     if (pApp->GetUnloadRequestThread() == NULL)
7963     {
7964         // This is asynchonous unload, either by a host, or by AppDomain.Unload from AD unload event.
7965         if (!pApp->IsUnloadingFromUnloadEvent())
7966         {
7967             pApp->SetStage(STAGE_UNLOAD_REQUESTED);
7968             pApp->EnableADUnloadWorker(
7969                  pApp->IsRudeUnload()?EEPolicy::ADU_Rude:EEPolicy::ADU_Safe);
7970             return;
7971         }
7972     }
7973
7974     SystemDomain::LockHolder lh; // we don't want to reopen appdomain if other thread can be preparing to unload it
7975
7976 #ifdef FEATURE_COMINTEROP
7977     if (pApp->m_pComCallWrapperCache)
7978         pApp->m_pComCallWrapperCache->ResetDomainIsUnloading();
7979 #endif // FEATURE_COMINTEROP
7980
7981     pApp->SetStage(STAGE_OPEN);
7982 }
7983
7984 void AppDomain::RestrictThreadEntrance(AppDomain * pApp)
7985 {
7986     CONTRACTL
7987     {
7988         DISABLED(NOTHROW);
7989         DISABLED(GC_TRIGGERS);
7990         MODE_ANY;
7991         DISABLED(FORBID_FAULT);
7992         PRECONDITION(CheckPointer(pApp));
7993     }
7994     CONTRACTL_END;
7995
7996 #ifdef FEATURE_COMINTEROP
7997     // Set the flag on our CCW cache so stubs won't enter
7998     if (pApp->m_pComCallWrapperCache)
7999         pApp->m_pComCallWrapperCache->SetDomainIsUnloading();
8000 #endif // FEATURE_COMINTEROP
8001
8002     SystemDomain::LockHolder lh; // we don't want to reopen appdomain if other thread can be preparing to unload it
8003     // Release our ID so remoting and thread pool won't enter
8004     pApp->SetStage(STAGE_EXITED);
8005 };
8006
8007 void AppDomain::Exit(BOOL fRunFinalizers, BOOL fAsyncExit)
8008 {
8009     CONTRACTL
8010     {
8011         THROWS;
8012         GC_TRIGGERS;
8013         MODE_COOPERATIVE;
8014     }
8015     CONTRACTL_END;
8016
8017     LOG((LF_APPDOMAIN | LF_CORDB, LL_INFO10, "AppDomain::Exiting domain [%d] %#08x %ls\n",
8018          GetId().m_dwId, this, GetFriendlyNameForLogging()));
8019
8020     RestrictEnterHolder RestrictEnter(this);
8021
8022     {
8023         SystemDomain::LockHolder lh; // we don't want to close appdomain if other thread can be preparing to unload it
8024         SetStage(STAGE_EXITING);  // Note that we're trying to exit
8025     }
8026
8027     // Raise the event indicating the domain is being unloaded.
8028     if (GetDefaultContext())
8029     {
8030         FastInterlockExchangePointer(&s_pAppDomainToRaiseUnloadEvent, this);
8031
8032         DWORD timeout = GetEEPolicy()->GetTimeout(m_fRudeUnload?OPR_AppDomainRudeUnload : OPR_AppDomainUnload);
8033         //if (timeout == INFINITE)
8034         //{
8035         //    timeout = 20000; // 20 seconds
8036         //}
8037         DWORD timeoutForFinalizer = GetEEPolicy()->GetTimeout(OPR_FinalizerRun);
8038         ULONGLONG curTime = CLRGetTickCount64();
8039         ULONGLONG endTime = 0;
8040         if (timeout != INFINITE)
8041         {
8042             endTime = curTime + timeout;
8043             // We will try to kill AD unload event if it takes too long, and then we move on to the next registered caller.
8044             timeout /= 5;
8045         }
8046
8047         while (s_pAppDomainToRaiseUnloadEvent != NULL)
8048         {
8049             FinalizerThread::FinalizerThreadWait(s_fProcessUnloadDomainEvent?timeout:timeoutForFinalizer);
8050             if (endTime != 0 && s_pAppDomainToRaiseUnloadEvent != NULL)
8051             {
8052                 if (CLRGetTickCount64() >= endTime)
8053                 {
8054                     SString sThreadId;
8055                     sThreadId.Printf(W("%x"), FinalizerThread::GetFinalizerThread()->GetThreadId());
8056                     COMPlusThrow(kCannotUnloadAppDomainException,
8057                                  IDS_EE_ADUNLOAD_CANT_UNWIND_THREAD,
8058                                  sThreadId);
8059                 }
8060             }
8061         }
8062     }
8063
8064     // Tell the tiered compilation manager to stop initiating any new work for background
8065     // jit optimization. Its possible the standard thread unwind mechanisms would pre-emptively
8066     // evacuate the jit threadpool worker threads from the domain on their own, but I see no reason
8067     // to take the risk of relying on them when we can easily augment with a cooperative
8068     // shutdown check. This notification only initiates the process of evacuating the threads
8069     // and then the UnwindThreads() call below is where blocking will occur to ensure the threads
8070     // have exited the domain.
8071     //
8072 #ifdef FEATURE_TIERED_COMPILATION
8073     m_tieredCompilationManager.Shutdown(FALSE);
8074 #endif
8075
8076     //
8077     // Set up blocks so no threads can enter except for the finalizer and the thread
8078     // doing the unload.
8079     //
8080
8081     RestrictThreadEntrance(this);
8082
8083     // Cause existing threads to abort out of this domain.  This should ensure all
8084     // normal threads are outside the domain, and we've already ensured that no new threads
8085     // can enter.
8086
8087     PerAppDomainTPCountList::AppDomainUnloadingHolder tpAdUnloadHolder(GetTPIndex());
8088
8089
8090     if (!NingenEnabled())
8091     {
8092         UnwindThreads();
8093     }
8094
8095     TESTHOOKCALL(UnwoundThreads(GetId().m_dwId)) ;
8096     ProcessEventForHost(Event_DomainUnload, (PVOID)(UINT_PTR)GetId().m_dwId);
8097
8098     RestrictEnter.SuppressRelease(); //after this point we don't guarantee appdomain consistency
8099 #ifdef PROFILING_SUPPORTED
8100     // Signal profile if present.
8101     {
8102         BEGIN_PIN_PROFILER(CORProfilerTrackAppDomainLoads());
8103         GCX_PREEMP();
8104         g_profControlBlock.pProfInterface->AppDomainShutdownStarted((AppDomainID) this);
8105         END_PIN_PROFILER();
8106     }
8107 #endif // PROFILING_SUPPORTED
8108     COUNTER_ONLY(GetPerfCounters().m_Loading.cAppDomains--);
8109     COUNTER_ONLY(GetPerfCounters().m_Loading.cAppDomainsUnloaded++);
8110
8111     LOG((LF_APPDOMAIN | LF_CORDB, LL_INFO10, "AppDomain::Domain [%d] %#08x %ls is exited.\n",
8112          GetId().m_dwId, this, GetFriendlyNameForLogging()));
8113
8114     // Send ETW events for this domain's unload and potentially iterate through this
8115     // domain's modules & assemblies to send events for their unloads as well.  This
8116     // needs to occur before STAGE_FINALIZED (to ensure everything is there), so we do
8117     // this before any finalization occurs at all.
8118     ETW::LoaderLog::DomainUnload(this);
8119
8120     CodeVersionManager::OnAppDomainExit(this);
8121
8122     //
8123     // Spin running finalizers until we flush them all.  We need to make multiple passes
8124     // in case the finalizers create more finalizable objects.  This is important to clear
8125     // the finalizable objects as roots, as well as to actually execute the finalizers. This
8126     // will only finalize instances instances of types that aren't potentially agile becuase we can't
8127     // risk finalizing agile objects. So we will be left with instances of potentially agile types
8128     // in handles or statics.
8129     //
8130     // <TODO>@todo: Need to ensure this will terminate in a reasonable amount of time.  Eventually
8131     // we should probably start passing FALSE for fRunFinalizers. Also I'm not sure we
8132     // guarantee that FinalizerThreadWait will ever terminate in general.</TODO>
8133     //
8134
8135     SetStage(STAGE_FINALIZING);
8136
8137     // Flush finalizers now.
8138     FinalizerThread::UnloadAppDomain(this, fRunFinalizers);
8139
8140     DWORD timeout = GetEEPolicy()->GetTimeout(m_fRudeUnload?OPR_AppDomainRudeUnload : OPR_AppDomainUnload);
8141     ULONGLONG startTime = CLRGetTickCount64();
8142     ULONGLONG elapsedTime = 0;
8143     DWORD finalizerWait = 0;
8144
8145     while (FinalizerThread::GetUnloadingAppDomain() != NULL)
8146     {
8147
8148         if (timeout != INFINITE)
8149         {
8150             elapsedTime = CLRGetTickCount64() - startTime;
8151         }
8152         if (timeout > elapsedTime)
8153         {
8154             finalizerWait = timeout - static_cast<DWORD>(elapsedTime);
8155         }
8156         FinalizerThread::FinalizerThreadWait(finalizerWait); //will set stage to finalized
8157         if (timeout != INFINITE && FinalizerThread::GetUnloadingAppDomain() != NULL)
8158         {
8159             elapsedTime = CLRGetTickCount64() - startTime;
8160             if (timeout <= elapsedTime)
8161             {
8162                 SetRudeUnload();
8163                 // TODO: Consider escalation from RudeAppDomain
8164                 timeout = INFINITE;
8165             }
8166         }
8167     }
8168
8169     tpAdUnloadHolder.SuppressRelease();
8170     PerAppDomainTPCountList::ResetAppDomainTPCounts(GetTPIndex());
8171
8172     LOG((LF_APPDOMAIN | LF_CORDB, LL_INFO10, "AppDomain::Domain [%d] %#08x %ls is finalized.\n",
8173          GetId().m_dwId, this, GetFriendlyNameForLogging()));
8174
8175
8176     AppDomainRefHolder This(this);
8177     AddRef();           // Hold a reference so CloseDomain won't delete us yet
8178     CloseDomain();      // Remove ourself from the list of app domains
8179
8180     // This needs to be done prior to destroying the handle tables below.
8181     ReleaseDomainBoundInfo();
8182
8183     //
8184     // It should be impossible to run non-mscorlib code in this domain now.
8185     // Cleanup all of our roots except the handles. We do this to allow as many
8186     // finalizers as possible to run correctly. If we delete the handles, they
8187     // can't run.
8188     //
8189     if (!NingenEnabled())
8190     {
8191     }
8192
8193     ClearGCRoots();
8194     ClearGCHandles();
8195
8196     LOG((LF_APPDOMAIN | LF_CORDB, LL_INFO10, "AppDomain::Domain [%d] %#08x %ls is cleared.\n",
8197          GetId().m_dwId, this, GetFriendlyNameForLogging()));
8198
8199     if (fAsyncExit && fRunFinalizers)
8200     {
8201         GCX_PREEMP();
8202         m_AssemblyCache.Clear();
8203         ClearFusionContext();
8204         ReleaseFiles();
8205         if (!NingenEnabled())
8206         {
8207             AddMemoryPressure();
8208         }
8209     }
8210     SystemDomain::System()->AddToDelayedUnloadList(this, fAsyncExit);
8211     SystemDomain::SetUnloadDomainCleared();
8212     if (m_dwId.m_dwId!=0)
8213         SystemDomain::ReleaseAppDomainId(m_dwId);
8214 #ifdef PROFILING_SUPPORTED
8215     // Always signal profile if present, even when failed.
8216     {
8217         BEGIN_PIN_PROFILER(CORProfilerTrackAppDomainLoads());
8218         GCX_PREEMP();
8219         g_profControlBlock.pProfInterface->AppDomainShutdownFinished((AppDomainID) this, S_OK);
8220         END_PIN_PROFILER();
8221     }
8222 #endif // PROFILING_SUPPORTED
8223
8224 }
8225
8226 void AppDomain::Close()
8227 {
8228     CONTRACTL
8229     {
8230         GC_TRIGGERS;
8231         NOTHROW;
8232     }
8233     CONTRACTL_END;
8234
8235     LOG((LF_APPDOMAIN | LF_CORDB, LL_INFO10, "AppDomain::Domain [%d] %#08x %ls is collected.\n",
8236          GetId().m_dwId, this, GetFriendlyNameForLogging()));
8237
8238
8239 #if CHECK_APP_DOMAIN_LEAKS
8240     if (g_pConfig->AppDomainLeaks())
8241         // at this point shouldn't have any non-agile objects in the heap because we finalized all the non-agile ones.
8242         SyncBlockCache::GetSyncBlockCache()->CheckForUnloadedInstances(GetIndex());
8243 #endif // CHECK_APP_DOMAIN_LEAKS
8244     {
8245         GCX_PREEMP();
8246         RemoveMemoryPressure();
8247     }
8248     _ASSERTE(m_cRef>0); //should be alive at this point otherwise iterator can revive us and crash
8249     {
8250         SystemDomain::LockHolder lh;    // Avoid races with AppDomainIterator
8251         SetStage(STAGE_CLOSED);
8252     }
8253
8254     // CONSIDER: move releasing remoting cache from managed code to here.
8255 }
8256
8257
8258 void AppDomain::ResetUnloadRequestThread(ADID Id)
8259 {
8260     CONTRACTL
8261     {
8262         NOTHROW;
8263         MODE_ANY;
8264         PRECONDITION(!IsADUnloadHelperThread());
8265     }
8266     CONTRACTL_END;
8267
8268     GCX_COOP();
8269     AppDomainFromIDHolder ad(Id, TRUE);
8270     if(!ad.IsUnloaded() && ad->m_Stage < STAGE_UNLOAD_REQUESTED)
8271     {
8272         Thread *pThread = ad->GetUnloadRequestThread();
8273         if(pThread==GetThread())
8274         {
8275             ad->m_dwThreadsStillInAppDomain=(ULONG)-1;
8276
8277             if(pThread)
8278             {
8279                 if (pThread->GetUnloadBoundaryFrame() && pThread->IsBeingAbortedForADUnload())
8280                 {
8281                     pThread->UnmarkThreadForAbort(Thread::TAR_ADUnload);
8282                 }
8283                 ad->GetUnloadRequestThread()->ResetUnloadBoundaryFrame();
8284                 pThread->ResetBeginAbortedForADUnload();
8285             }
8286
8287             ad->SetUnloadRequestThread(NULL);
8288         }
8289     }
8290 }
8291
8292
8293 int g_fADUnloadWorkerOK = -1;
8294
8295 HRESULT AppDomain::UnloadById(ADID dwId, BOOL fSync,BOOL fExceptionsPassThrough)
8296 {
8297     CONTRACTL
8298     {
8299         if(fExceptionsPassThrough) {THROWS;} else {NOTHROW;}
8300         MODE_ANY;
8301         if (GetThread()) {GC_TRIGGERS;} else {DISABLED(GC_TRIGGERS);}
8302         FORBID_FAULT;
8303     }
8304     CONTRACTL_END;
8305
8306     if (dwId==(ADID)DefaultADID)
8307         return COR_E_CANNOTUNLOADAPPDOMAIN;
8308
8309     Thread *pThread = GetThread();
8310
8311     // Finalizer thread can not wait until AD unload is done,
8312     // because AD unload is going to wait for Finalizer Thread.
8313     if (fSync && pThread == FinalizerThread::GetFinalizerThread() &&
8314         !pThread->HasThreadStateNC(Thread::TSNC_RaiseUnloadEvent))
8315         return COR_E_CANNOTUNLOADAPPDOMAIN;
8316
8317
8318     // AD unload helper thread should have been created.
8319     _ASSERTE (g_fADUnloadWorkerOK == 1);
8320
8321     _ASSERTE (!IsADUnloadHelperThread());
8322
8323     BOOL fIsRaisingUnloadEvent = (pThread != NULL && pThread->HasThreadStateNC(Thread::TSNC_RaiseUnloadEvent));
8324
8325     if (fIsRaisingUnloadEvent)
8326     {
8327         AppDomainFromIDHolder pApp(dwId, TRUE, AppDomainFromIDHolder::SyncType_GC);
8328
8329         if (pApp.IsUnloaded() || ! pApp->CanLoadCode() || pApp->GetId().m_dwId == 0)
8330             return COR_E_APPDOMAINUNLOADED;
8331
8332         pApp->EnableADUnloadWorker();
8333
8334         return S_FALSE;
8335     }
8336
8337
8338     ADUnloadSinkHolder pSink;
8339
8340     {
8341         SystemDomain::LockHolder ulh;
8342
8343         AppDomainFromIDHolder pApp(dwId, TRUE, AppDomainFromIDHolder::SyncType_ADLock);
8344
8345         if (pApp.IsUnloaded() || ! pApp->CanLoadCode() || pApp->GetId().m_dwId == 0)
8346             return COR_E_APPDOMAINUNLOADED;
8347
8348         if (g_fADUnloadWorkerOK != 1)
8349         {
8350             _ASSERTE(FALSE);
8351             return E_UNEXPECTED;
8352         }
8353
8354         if (!fSync)
8355         {
8356             pApp->EnableADUnloadWorker();
8357             return S_OK;
8358         }
8359
8360         pSink = pApp->PrepareForWaitUnloadCompletion();
8361
8362         pApp->EnableADUnloadWorker();
8363
8364         // release the holders - we don't care anymore if the appdomain is gone
8365     }
8366
8367 #ifdef FEATURE_TESTHOOKS
8368     if (fExceptionsPassThrough)
8369     {
8370         CONTRACT_VIOLATION(FaultViolation);
8371         return UnloadWaitNoCatch(dwId,pSink);
8372     }
8373 #endif
8374
8375     return UnloadWait(dwId,pSink);
8376 }
8377
8378 HRESULT AppDomain::UnloadWait(ADID Id, ADUnloadSink * pSink)
8379 {
8380     CONTRACTL
8381     {
8382         NOTHROW;
8383         MODE_ANY;
8384         if (GetThread()) {GC_TRIGGERS;} else {DISABLED(GC_TRIGGERS);}
8385     }
8386     CONTRACTL_END;
8387
8388     HRESULT hr=S_OK;
8389     EX_TRY
8390     {
8391         // IF you ever try to change this to something not using events, please address the fact that
8392         // AppDomain::StopEEAndUnwindThreads relies on that events are used.
8393
8394         pSink->WaitUnloadCompletion();
8395     }
8396     EX_CATCH_HRESULT(hr);
8397
8398     if (SUCCEEDED(hr))
8399         hr=pSink->GetUnloadResult();
8400
8401     if (FAILED(hr))
8402     {
8403         ResetUnloadRequestThread(Id);
8404     }
8405     return hr;
8406 }
8407
8408 #ifdef FEATURE_TESTHOOKS
8409 HRESULT AppDomain::UnloadWaitNoCatch(ADID Id, ADUnloadSink * pSink)
8410 {
8411     STATIC_CONTRACT_THROWS;
8412     STATIC_CONTRACT_MODE_ANY;
8413
8414     Holder<ADID, DoNothing<ADID>, AppDomain::ResetUnloadRequestThread> resetUnloadHolder(Id);
8415
8416     // IF you ever try to change this to something not using events, please address the fact that
8417     // AppDomain::StopEEAndUnwindThreads relies on that events are used.
8418     pSink->WaitUnloadCompletion();
8419
8420     HRESULT hr = pSink->GetUnloadResult();
8421
8422     if (SUCCEEDED(hr))
8423         resetUnloadHolder.SuppressRelease();
8424
8425     return hr;
8426 }
8427 #endif
8428
8429 void AppDomain::Unload(BOOL fForceUnload)
8430 {
8431     CONTRACTL
8432     {
8433         THROWS;
8434         MODE_COOPERATIVE;
8435         GC_TRIGGERS;
8436         INJECT_FAULT(COMPlusThrowOM(););
8437     }
8438     CONTRACTL_END;
8439
8440 #ifdef FEATURE_MULTICOREJIT
8441
8442     // Avoid profiling file is partially written in ASP.net scenarios, call it earlier
8443     GetMulticoreJitManager().StopProfile(true);
8444
8445 #endif
8446
8447     Thread *pThread = GetThread();
8448
8449
8450     if (! fForceUnload && !g_pConfig->AppDomainUnload())
8451         return;
8452
8453     EPolicyAction action;
8454     EClrOperation operation;
8455     if (!IsRudeUnload())
8456     {
8457         operation = OPR_AppDomainUnload;
8458     }
8459     else
8460     {
8461         operation = OPR_AppDomainRudeUnload;
8462     }
8463     action = GetEEPolicy()->GetDefaultAction(operation,NULL);
8464     GetEEPolicy()->NotifyHostOnDefaultAction(operation,action);
8465
8466     switch (action)
8467     {
8468     case eUnloadAppDomain:
8469         break;
8470     case eRudeUnloadAppDomain:
8471         SetRudeUnload();
8472         break;
8473     case eExitProcess:
8474     case eFastExitProcess:
8475     case eRudeExitProcess:
8476     case eDisableRuntime:
8477         EEPolicy::HandleExitProcessFromEscalation(action, HOST_E_EXITPROCESS_ADUNLOAD);
8478         _ASSERTE (!"Should not get here");
8479         break;
8480     default:
8481         break;
8482     }
8483
8484 #if (defined(_DEBUG) || defined(BREAK_ON_UNLOAD) || defined(AD_LOG_MEMORY) || defined(AD_SNAPSHOT))
8485     static int unloadCount = 0;
8486 #endif
8487
8488 #ifdef AD_LOG_MEMORY
8489     {
8490         GCX_PREEMP();
8491         static int logMemory = CLRConfig::GetConfigValue(CLRConfig::INTERNAL_ADLogMemory);
8492         typedef void (__cdecl *LogItFcn) ( int );
8493         static LogItFcn pLogIt = NULL;
8494
8495         if (logMemory && ! pLogIt)
8496         {
8497             HMODULE hMod = CLRLoadLibrary(W("mpdh.dll"));
8498             if (hMod)
8499             {
8500                 pLogIt = (LogItFcn)GetProcAddress(hMod, "logIt");
8501                 if (pLogIt)
8502                 {
8503                     pLogIt(9999);
8504                     pLogIt(9999);
8505                 }
8506             }
8507         }
8508     }
8509 #endif // AD_LOG_MEMORY
8510
8511     if (IsDefaultDomain() && !IsSingleAppDomain())
8512         COMPlusThrow(kCannotUnloadAppDomainException, IDS_EE_ADUNLOAD_DEFAULT);
8513
8514     _ASSERTE(CanUnload());
8515
8516     if (pThread == FinalizerThread::GetFinalizerThread() || GetUnloadRequestThread() == FinalizerThread::GetFinalizerThread())
8517         COMPlusThrow(kCannotUnloadAppDomainException, IDS_EE_ADUNLOAD_IN_FINALIZER);
8518
8519     _ASSERTE(! SystemDomain::AppDomainBeingUnloaded());
8520
8521     // should not be running in this AD because unload spawned thread in default domain
8522     if (!NingenEnabled())
8523     {
8524         _ASSERTE(!pThread->IsRunningIn(this, NULL));
8525     }
8526
8527
8528 #ifdef APPDOMAIN_STATE
8529     _ASSERTE_ALL_BUILDS("clr/src/VM/AppDomain.cpp", pThread->GetDomain()->IsDefaultDomain());
8530 #endif
8531
8532     LOG((LF_APPDOMAIN | LF_CORDB, LL_INFO10, "AppDomain::Unloading domain [%d] %#08x %ls\n", GetId().m_dwId, this, GetFriendlyName()));
8533
8534     STRESS_LOG3 (LF_APPDOMAIN, LL_INFO100, "Unload domain [%d, %d] %p\n", GetId().m_dwId, GetIndex().m_dwIndex, this);
8535
8536     UnloadHolder hold(this);
8537
8538     SystemDomain::System()->SetUnloadRequestingThread(GetUnloadRequestThread());
8539     SystemDomain::System()->SetUnloadingThread(pThread);
8540
8541
8542 #ifdef _DEBUG
8543     static int dumpSB = -1;
8544
8545     if (dumpSB == -1)
8546         dumpSB = CLRConfig::GetConfigValue(CLRConfig::INTERNAL_ADDumpSB);
8547
8548     if (dumpSB > 1)
8549     {
8550         LogSpewAlways("Starting unload %3.3d\n", unloadCount);
8551         DumpSyncBlockCache();
8552     }
8553 #endif // _DEBUG
8554
8555     BOOL bForceGC=m_bForceGCOnUnload;
8556
8557 #ifdef AD_LOG_MEMORY
8558     if (pLogIt)
8559         bForceGC=TRUE;
8560 #endif // AD_LOG_MEMORY
8561
8562 #ifdef AD_SNAPSHOT
8563     static int takeSnapShot = -1;
8564
8565     if (takeSnapShot == -1)
8566         takeSnapShot = CLRConfig::GetConfigValue(CLRConfig::INTERNAL_ADTakeSnapShot);
8567
8568     if (takeSnapShot)
8569         bForceGC=TRUE;
8570 #endif // AD_SNAPSHOT
8571
8572 #ifdef _DEBUG
8573     if (dumpSB > 0)
8574         bForceGC=TRUE;
8575 #endif // _DEBUG
8576     static int cfgForceGC = -1;
8577
8578     if (cfgForceGC == -1)
8579         cfgForceGC =!CLRConfig::GetConfigValue(CLRConfig::EXTERNAL_ADULazyMemoryRelease);
8580
8581     bForceGC=bForceGC||cfgForceGC;
8582     AppDomainRefHolder This(this);
8583     AddRef();
8584
8585     // Do the actual unloading
8586     {
8587         // We do not want other threads to abort the current one.
8588         ThreadPreventAsyncHolder preventAsync;
8589         Exit(TRUE, !bForceGC);
8590     }
8591     if(bForceGC)
8592     {
8593         GCHeapUtilities::GetGCHeap()->GarbageCollect();
8594         FinalizerThread::FinalizerThreadWait();
8595         SetStage(STAGE_COLLECTED);
8596         Close(); //NOTHROW!
8597     }
8598
8599 #ifdef AD_LOG_MEMORY
8600     if (pLogIt)
8601     {
8602         GCX_PREEMP();
8603         pLogIt(unloadCount);
8604     }
8605 #endif // AD_LOG_MEMORY
8606
8607 #ifdef AD_SNAPSHOT
8608     if (takeSnapShot)
8609     {
8610         char buffer[1024];
8611         sprintf_s(buffer, _countof(buffer), "vadump -p %d -o > vadump.%d", GetCurrentProcessId(), unloadCount);
8612         system(buffer);
8613         sprintf_s(buffer, _countof(buffer), "umdh -p:%d -d -i:1 -f:umdh.%d", GetCurrentProcessId(), unloadCount);
8614         system(buffer);
8615         int takeDHSnapShot = CLRConfig::GetConfigValue(CLRConfig::INTERNAL_ADTakeDHSnapShot);
8616         if (takeDHSnapShot)
8617         {
8618             sprintf_s(buffer, _countof(buffer), "dh -p %d -s -g -h -b -f dh.%d", GetCurrentProcessId(), unloadCount);
8619             system(buffer);
8620         }
8621     }
8622 #endif // AD_SNAPSHOT
8623
8624 #ifdef _DEBUG
8625     if (dumpSB > 0)
8626     {
8627         // do extra finalizer wait to remove any leftover sb entries
8628         FinalizerThread::FinalizerThreadWait();
8629         GCHeapUtilities::GetGCHeap()->GarbageCollect();
8630         FinalizerThread::FinalizerThreadWait();
8631         LogSpewAlways("Done unload %3.3d\n", unloadCount);
8632         DumpSyncBlockCache();
8633         ShutdownLogging();
8634         WCHAR buffer[128];
8635         swprintf_s(buffer, NumItems(buffer), W("DumpSB.%d"), unloadCount);
8636         _ASSERTE(WszMoveFileEx(W("COMPLUS.LOG"), buffer, MOVEFILE_REPLACE_EXISTING));
8637         // this will open a new file
8638         InitLogging();
8639     }
8640 #endif // _DEBUG
8641 }
8642
8643 void AppDomain::ExceptionUnwind(Frame *pFrame)
8644 {
8645     CONTRACTL
8646     {
8647         DISABLED(GC_TRIGGERS);  // EEResourceException
8648         DISABLED(THROWS);   // EEResourceException
8649         MODE_ANY;
8650     }
8651     CONTRACTL_END;
8652
8653     LOG((LF_APPDOMAIN, LL_INFO10, "AppDomain::ExceptionUnwind for %8.8x\n", pFrame));
8654 #if _DEBUG_ADUNLOAD
8655     printf("%x AppDomain::ExceptionUnwind for %8.8p\n", GetThread()->GetThreadId(), pFrame);
8656 #endif
8657     Thread *pThread = GetThread();
8658     _ASSERTE(pThread);
8659
8660     if (! pThread->ShouldChangeAbortToUnload(pFrame))
8661     {
8662         LOG((LF_APPDOMAIN, LL_INFO10, "AppDomain::ExceptionUnwind: not first transition or abort\n"));
8663         return;
8664     }
8665
8666     LOG((LF_APPDOMAIN, LL_INFO10, "AppDomain::ExceptionUnwind: changing to unload\n"));
8667
8668     GCX_COOP();
8669     OBJECTREF throwable = NULL;
8670     EEResourceException e(kAppDomainUnloadedException, W("Remoting_AppDomainUnloaded_ThreadUnwound"));
8671     throwable = e.GetThrowable();
8672
8673     // reset the exception to an AppDomainUnloadedException
8674     if (throwable != NULL)
8675     {
8676         GetThread()->SafeSetThrowables(throwable);
8677     }
8678 }
8679
8680 BOOL AppDomain::StopEEAndUnwindThreads(unsigned int retryCount, BOOL *pFMarkUnloadRequestThread)
8681 {
8682     CONTRACTL
8683     {
8684         THROWS;
8685         GC_TRIGGERS;
8686         MODE_ANY;
8687         SO_INTOLERANT;
8688     }
8689     CONTRACTL_END;
8690
8691     Thread *pThread = NULL;
8692     DWORD nThreadsNeedMoreWork=0;
8693     if (retryCount != (unsigned int)-1 && retryCount < g_pConfig->AppDomainUnloadRetryCount())
8694     {
8695         Thread *pCurThread = GetThread();
8696         if (pCurThread->CatchAtSafePoint())
8697             pCurThread->PulseGCMode();
8698
8699         {
8700             // We know which thread is not in the domain now.  We just need to
8701             // work on those threads.  We do not need to suspend the runtime.
8702             ThreadStoreLockHolder tsl;
8703
8704             while ((pThread = ThreadStore::GetThreadList(pThread)) != NULL)
8705             {
8706                 if (pThread == pCurThread)
8707                 {
8708                     continue;
8709                 }
8710
8711                 if (pThread == FinalizerThread::GetFinalizerThread())
8712                 {
8713                     continue;
8714                 }
8715
8716                 if (pThread->GetUnloadBoundaryFrame() == NULL)
8717                 {
8718                     continue;
8719                 }
8720
8721                 // A thread may have UnloadBoundaryFrame set if
8722                 // 1. Being unloaded by AD unload helper thread
8723                 // 2. Escalation from OOM or SO triggers AD unload
8724                 // Here we only need to work on threads that are in the domain.  If we work on other threads,
8725                 // those threads may be stucked in a finally, and we will not be able to escalate for them,
8726                 // therefore AD unload is blocked.
8727                 if (pThread->IsBeingAbortedForADUnload() ||
8728                     pThread == SystemDomain::System()->GetUnloadRequestingThread())
8729                 {
8730                     nThreadsNeedMoreWork++;
8731                 }
8732
8733                 if (!(IsRudeUnload() ||
8734                       (pThread != SystemDomain::System()->GetUnloadRequestingThread() || OnlyOneThreadLeft())))
8735                 {
8736                     continue;
8737                 }
8738
8739                 if ((pThread == SystemDomain::System()->GetUnloadRequestingThread()) && *pFMarkUnloadRequestThread)
8740                 {
8741                     // Mark thread for abortion only once; later on interrupt only
8742                     *pFMarkUnloadRequestThread = FALSE;
8743                     pThread->SetAbortRequest(m_fRudeUnload? EEPolicy::TA_Rude : EEPolicy::TA_V1Compatible);
8744                 }
8745                 else
8746                 {
8747                     if (pThread->m_State & Thread::TS_Interruptible)
8748                     {
8749                         pThread->UserInterrupt(Thread::TI_Abort);
8750                     }
8751                 }
8752
8753                 if (pThread->PreemptiveGCDisabledOther())
8754                 {
8755         #if defined(FEATURE_HIJACK) && !defined(PLATFORM_UNIX)
8756                     Thread::SuspendThreadResult str = pThread->SuspendThread();
8757                     if (str == Thread::STR_Success)
8758                     {
8759                         if (pThread->PreemptiveGCDisabledOther() &&
8760                             (!pThread->IsAbortInitiated() || pThread->IsRudeAbort()))
8761                         {
8762                             pThread->HandleJITCaseForAbort();
8763                         }
8764                         pThread->ResumeThread();
8765                     }
8766         #endif
8767                 }
8768             }
8769         } // ThreadStoreLockHolder
8770
8771         m_dwThreadsStillInAppDomain=nThreadsNeedMoreWork;
8772         return !nThreadsNeedMoreWork;
8773     }
8774
8775     // For now piggyback on the GC's suspend EE mechanism
8776     ThreadSuspend::SuspendEE(ThreadSuspend::SUSPEND_FOR_APPDOMAIN_SHUTDOWN);
8777 #ifdef _DEBUG
8778     // <TODO>@todo: what to do with any threads that didn't stop?</TODO>
8779     _ASSERTE(ThreadStore::s_pThreadStore->DbgBackgroundThreadCount() > 0);
8780 #endif // _DEBUG
8781
8782     int totalADCount = 0;
8783     int finalizerADCount = 0;
8784     pThread = NULL;
8785
8786     RuntimeExceptionKind reKind = kLastException;
8787     UINT resId = 0;
8788     SmallStackSString ssThreadId;
8789
8790     while ((pThread = ThreadStore::GetThreadList(pThread)) != NULL)
8791     {
8792         // we already checked that we're not running in the unload domain
8793         if (pThread == GetThread())
8794         {
8795             continue;
8796         }
8797
8798 #ifdef _DEBUG
8799         void PrintStackTraceWithADToLog(Thread *pThread);
8800         if (LoggingOn(LF_APPDOMAIN, LL_INFO100)) {
8801             LOG((LF_APPDOMAIN, LL_INFO100, "\nStackTrace for %x\n", pThread->GetThreadId()));
8802             PrintStackTraceWithADToLog(pThread);
8803         }
8804 #endif // _DEBUG
8805         int count = 0;
8806         Frame *pFrame = pThread->GetFirstTransitionInto(this, &count);
8807         if (! pFrame) {
8808             _ASSERTE(count == 0);
8809             if (pThread->IsBeingAbortedForADUnload())
8810             {
8811                 pThread->ResetBeginAbortedForADUnload();
8812             }
8813             continue;
8814         }
8815
8816         if (pThread != FinalizerThread::GetFinalizerThread())
8817         {
8818             totalADCount += count;
8819             nThreadsNeedMoreWork++;
8820             pThread->SetUnloadBoundaryFrame(pFrame);
8821         }
8822         else
8823         {
8824             finalizerADCount = count;
8825         }
8826
8827         // don't setup the exception info for the unloading thread unless it's the last one in
8828         if (retryCount != ((unsigned int) -1) && retryCount > g_pConfig->AppDomainUnloadRetryCount() && reKind == kLastException &&
8829             (pThread != SystemDomain::System()->GetUnloadRequestingThread() || OnlyOneThreadLeft()))
8830         {
8831 #ifdef AD_BREAK_ON_CANNOT_UNLOAD
8832             static int breakOnCannotUnload = CLRConfig::GetConfigValue(CLRConfig::INTERNAL_ADBreakOnCannotUnload);
8833             if (breakOnCannotUnload)
8834                 _ASSERTE(!"Cannot unload AD");
8835 #endif // AD_BREAK_ON_CANNOT_UNLOAD
8836             reKind = kCannotUnloadAppDomainException;
8837             resId = IDS_EE_ADUNLOAD_CANT_UNWIND_THREAD;
8838             ssThreadId.Printf(W("%x"), pThread->GetThreadId());
8839             STRESS_LOG2(LF_APPDOMAIN, LL_INFO10, "AppDomain::UnwindThreads cannot stop thread %x with %d transitions\n", pThread->GetThreadId(), count);
8840             // don't break out of this early or the assert totalADCount == (int)m_dwThreadEnterCount below will fire
8841             // it's better to chew a little extra time here and make sure our counts are consistent
8842         }
8843         // only abort the thread requesting the unload if it's the last one in, that way it will get
8844         // notification that the unload failed for some other thread not being aborted. And don't abort
8845         // the finalizer thread - let it finish it's work as it's allowed to be in there. If it won't finish,
8846         // then we will eventually get a CannotUnloadException on it.
8847
8848         if (pThread != FinalizerThread::GetFinalizerThread() &&
8849             // If the domain is rudely unloaded, we will unwind the requesting thread out
8850             // Rude unload is going to succeed, or escalated to disable runtime or higher.
8851             (IsRudeUnload() ||
8852              (pThread != SystemDomain::System()->GetUnloadRequestingThread() || OnlyOneThreadLeft())
8853             )
8854            )
8855         {
8856
8857             STRESS_LOG2(LF_APPDOMAIN, LL_INFO100, "AppDomain::UnwindThreads stopping %x with %d transitions\n", pThread->GetThreadId(), count);
8858             LOG((LF_APPDOMAIN, LL_INFO100, "AppDomain::UnwindThreads stopping %x with %d transitions\n", pThread->GetThreadId(), count));
8859 #if _DEBUG_ADUNLOAD
8860             printf("AppDomain::UnwindThreads %x stopping %x with first frame %8.8p\n", GetThread()->GetThreadId(), pThread->GetThreadId(), pFrame);
8861 #endif
8862             if (pThread == SystemDomain::System()->GetUnloadRequestingThread())
8863             {
8864                 // Mark thread for abortion only once; later on interrupt only
8865                 *pFMarkUnloadRequestThread = FALSE;
8866             }
8867             pThread->SetAbortRequest(m_fRudeUnload? EEPolicy::TA_Rude : EEPolicy::TA_V1Compatible);
8868         }
8869         TESTHOOKCALL(UnwindingThreads(GetId().m_dwId)) ;
8870     }
8871     _ASSERTE(totalADCount + finalizerADCount == (int)m_dwThreadEnterCount);
8872
8873     //@TODO: This is intended to catch a stress bug. Remove when no longer needed.
8874     if (totalADCount + finalizerADCount != (int)m_dwThreadEnterCount)
8875         FreeBuildDebugBreak();
8876
8877     // if our count did get messed up, set it to whatever count we actually found in the domain to avoid looping
8878     // or other problems related to incorrect count. This is very much a bug if this happens - a thread should always
8879     // exit the domain gracefully.
8880     // m_dwThreadEnterCount = totalADCount;
8881
8882     if (reKind != kLastException)
8883     {
8884         pThread = NULL;
8885         while ((pThread = ThreadStore::GetThreadList(pThread)) != NULL)
8886         {
8887             if (pThread->IsBeingAbortedForADUnload())
8888             {
8889                 pThread->ResetBeginAbortedForADUnload();
8890             }
8891         }
8892     }
8893
8894     // CommonTripThread will handle the abort for any threads that we've marked
8895     ThreadSuspend::RestartEE(FALSE, TRUE);
8896     if (reKind != kLastException)
8897         COMPlusThrow(reKind, resId, ssThreadId.GetUnicode());
8898
8899     _ASSERTE((totalADCount==0 && nThreadsNeedMoreWork==0) ||(totalADCount!=0 && nThreadsNeedMoreWork!=0));
8900
8901     m_dwThreadsStillInAppDomain=nThreadsNeedMoreWork;
8902     return (totalADCount == 0);
8903 }
8904
8905 void AppDomain::UnwindThreads()
8906 {
8907     // This function should guarantee appdomain
8908     // consistency even if it fails. Everything that is going
8909     // to make the appdomain impossible to reenter
8910     // should be factored out
8911
8912     // <TODO>@todo: need real synchronization here!!!</TODO>
8913     CONTRACTL
8914     {
8915         MODE_COOPERATIVE;
8916         THROWS;
8917         GC_TRIGGERS;
8918     }
8919     CONTRACTL_END;
8920
8921     int retryCount = -1;
8922     m_dwThreadsStillInAppDomain=(ULONG)-1;
8923     ULONGLONG startTime = CLRGetTickCount64();
8924
8925     if (GetEEPolicy()->GetDefaultAction(OPR_AppDomainUnload, NULL) == eRudeUnloadAppDomain &&
8926         !IsRudeUnload())
8927     {
8928         GetEEPolicy()->NotifyHostOnDefaultAction(OPR_AppDomainUnload, eRudeUnloadAppDomain);
8929         SetRudeUnload();
8930     }
8931
8932     // Force threads to go through slow path during AD unload.
8933     TSSuspendHolder shTrap;
8934
8935     BOOL fCurrentUnloadMode = IsRudeUnload();
8936     BOOL fMarkUnloadRequestThread = TRUE;
8937
8938     // now wait for all the threads running in our AD to get out
8939     do
8940     {
8941         DWORD timeout = GetEEPolicy()->GetTimeout(m_fRudeUnload?OPR_AppDomainRudeUnload : OPR_AppDomainUnload);
8942         EPolicyAction action = GetEEPolicy()->GetActionOnTimeout(m_fRudeUnload?OPR_AppDomainRudeUnload : OPR_AppDomainUnload, NULL);
8943         if (timeout != INFINITE && action > eUnloadAppDomain) {
8944             // Escalation policy specified.
8945             ULONGLONG curTime = CLRGetTickCount64();
8946             ULONGLONG elapseTime = curTime - startTime;
8947             if (elapseTime > timeout)
8948             {
8949                 // Escalate
8950                 switch (action)
8951                 {
8952                 case eRudeUnloadAppDomain:
8953                     GetEEPolicy()->NotifyHostOnTimeout(m_fRudeUnload?OPR_AppDomainRudeUnload : OPR_AppDomainUnload, action);
8954                     SetRudeUnload();
8955                     STRESS_LOG1(LF_APPDOMAIN, LL_INFO100,"Escalating to RADU, adid=%d",GetId().m_dwId);
8956                     break;
8957                 case eExitProcess:
8958                 case eFastExitProcess:
8959                 case eRudeExitProcess:
8960                 case eDisableRuntime:
8961                     GetEEPolicy()->NotifyHostOnTimeout(m_fRudeUnload?OPR_AppDomainRudeUnload : OPR_AppDomainUnload, action);
8962                     EEPolicy::HandleExitProcessFromEscalation(action, HOST_E_EXITPROCESS_TIMEOUT);
8963                     _ASSERTE (!"Should not reach here");
8964                     break;
8965                 default:
8966                     break;
8967                 }
8968             }
8969         }
8970 #ifdef _DEBUG
8971         if (LoggingOn(LF_APPDOMAIN, LL_INFO100))
8972             DumpADThreadTrack();
8973 #endif // _DEBUG
8974         BOOL fNextUnloadMode = IsRudeUnload();
8975         if (fCurrentUnloadMode != fNextUnloadMode)
8976         {
8977             // We have changed from normal unload to rude unload.  We need to mark the thread
8978             // with RudeAbort, but we can only do this safely if the runtime is suspended.
8979             fCurrentUnloadMode = fNextUnloadMode;
8980             retryCount = -1;
8981         }
8982         if (StopEEAndUnwindThreads(retryCount, &fMarkUnloadRequestThread))
8983             break;
8984         if (timeout != INFINITE)
8985         {
8986             // Turn off the timeout used by AD.
8987             retryCount = 1;
8988         }
8989         else
8990         {
8991             // GCStress takes a long time to unwind, due to expensive creation of
8992             // a threadabort exception.
8993             if (!GCStress<cfg_any>::IsEnabled())
8994                 ++retryCount;
8995             LOG((LF_APPDOMAIN, LL_INFO10, "AppDomain::UnwindThreads iteration %d waiting on thread count %d\n", retryCount, m_dwThreadEnterCount));
8996 #if _DEBUG_ADUNLOAD
8997             printf("AppDomain::UnwindThreads iteration %d waiting on thread count %d\n", retryCount, m_dwThreadEnterCount);
8998 #endif
8999         }
9000
9001         if (m_dwThreadEnterCount != 0)
9002         {
9003 #ifdef _DEBUG
9004             GetThread()->UserSleep(20);
9005 #else // !_DEBUG
9006             GetThread()->UserSleep(10);
9007 #endif // !_DEBUG
9008         }
9009     }
9010     while (TRUE) ;
9011 }
9012
9013 void AppDomain::ClearGCHandles()
9014 {
9015     CONTRACTL
9016     {
9017         GC_TRIGGERS;
9018         MODE_COOPERATIVE;
9019         NOTHROW;
9020     }
9021     CONTRACTL_END;
9022
9023     SetStage(STAGE_HANDLETABLE_NOACCESS);
9024
9025     GCHeapUtilities::GetGCHeap()->WaitUntilConcurrentGCComplete();
9026
9027     // Keep async pin handles alive by moving them to default domain
9028     HandleAsyncPinHandles();
9029
9030     // Remove our handle store as a source of GC roots
9031     m_handleStore->Uproot();
9032 }
9033
9034 // When an AD is unloaded, we will release all objects in this AD.
9035 // If a future asynchronous operation, like io completion port function,
9036 // we need to keep the memory space fixed so that the gc heap is not corrupted.
9037 void AppDomain::HandleAsyncPinHandles()
9038 {
9039     CONTRACTL
9040     {
9041         GC_TRIGGERS;
9042         MODE_COOPERATIVE;
9043         NOTHROW;
9044     }
9045     CONTRACTL_END;
9046
9047     IGCHandleStore *pBucket = m_handleStore;
9048
9049     // IO completion port picks IO job using FIFO.  Here is how we know which AsyncPinHandle can be freed.
9050     // 1. We mark all non-pending AsyncPinHandle with READYTOCLEAN.
9051     // 2. We queue a dump Overlapped to the IO completion as a marker.
9052     // 3. When the Overlapped is picked up by completion port, we wait until all previous IO jobs are processed.
9053     // 4. Then we can delete all AsyncPinHandle marked with READYTOCLEAN.
9054     IGCHandleStore *pBucketInDefault = SystemDomain::System()->DefaultDomain()->m_handleStore;
9055
9056     pBucket->RelocateAsyncPinnedHandles(pBucketInDefault);
9057
9058     OverlappedDataObject::RequestCleanup();
9059 }
9060
9061 void AppDomain::ClearGCRoots()
9062 {
9063     CONTRACTL
9064     {
9065         GC_TRIGGERS;
9066         MODE_COOPERATIVE;
9067         NOTHROW;
9068     }
9069     CONTRACTL_END;
9070
9071     Thread *pThread = NULL;
9072     ThreadSuspend::SuspendEE(ThreadSuspend::SUSPEND_FOR_APPDOMAIN_SHUTDOWN);
9073
9074     // Tell the JIT managers to delete any entries in their structures. All the cooperative mode threads are stopped at
9075     // this point, so only need to synchronize the preemptive mode threads.
9076     ExecutionManager::Unload(GetLoaderAllocator());
9077
9078     while ((pThread = ThreadStore::GetAllThreadList(pThread, 0, 0)) != NULL)
9079     {
9080         // Delete the thread local static store
9081         pThread->DeleteThreadStaticData(this);
9082
9083         // <TODO>@TODO: A pre-allocated AppDomainUnloaded exception might be better.</TODO>
9084         if (m_handleStore->ContainsHandle(pThread->m_LastThrownObjectHandle))
9085         {
9086             // Never delete a handle to a preallocated exception object.
9087             if (!CLRException::IsPreallocatedExceptionHandle(pThread->m_LastThrownObjectHandle))
9088             {
9089                 DestroyHandle(pThread->m_LastThrownObjectHandle);
9090             }
9091
9092             pThread->m_LastThrownObjectHandle = NULL;
9093         }
9094
9095         // Clear out the exceptions objects held by a thread.
9096         pThread->GetExceptionState()->ClearThrowablesForUnload(m_handleStore);
9097     }
9098
9099     //delete them while we still have the runtime suspended
9100     // This must be deleted before the loader heaps are deleted.
9101     if (m_pMarshalingData != NULL)
9102     {
9103         delete m_pMarshalingData;
9104         m_pMarshalingData = NULL;
9105     }
9106
9107     if (m_pLargeHeapHandleTable != NULL)
9108     {
9109         delete m_pLargeHeapHandleTable;
9110         m_pLargeHeapHandleTable = NULL;
9111     }
9112
9113     ThreadSuspend::RestartEE(FALSE, TRUE);
9114 }
9115
9116 #ifdef _DEBUG
9117
9118 void AppDomain::TrackADThreadEnter(Thread *pThread, Frame *pFrame)
9119 {
9120     CONTRACTL
9121     {
9122         NOTHROW;
9123         GC_NOTRIGGER;
9124         // REENTRANT
9125         PRECONDITION(CheckPointer(pThread));
9126         PRECONDITION(pFrame != (Frame*)(size_t) INVALID_POINTER_CD);
9127     }
9128     CONTRACTL_END;
9129
9130     while (FastInterlockCompareExchange((LONG*)&m_TrackSpinLock, 1, 0) != 0)
9131         ;
9132     if (m_pThreadTrackInfoList == NULL)
9133         m_pThreadTrackInfoList = new (nothrow) ThreadTrackInfoList;
9134     // If we don't assert here, we will AV in the for loop below
9135     _ASSERTE(m_pThreadTrackInfoList);
9136
9137     ThreadTrackInfoList *pTrackList= m_pThreadTrackInfoList;
9138
9139     ThreadTrackInfo *pTrack = NULL;
9140     int i;
9141     for (i=0; i < pTrackList->Count(); i++) {
9142         if ((*(pTrackList->Get(i)))->pThread == pThread) {
9143             pTrack = *(pTrackList->Get(i));
9144             break;
9145         }
9146     }
9147     if (! pTrack) {
9148         pTrack = new (nothrow) ThreadTrackInfo;
9149         // If we don't assert here, we will AV in the for loop below.
9150         _ASSERTE(pTrack);
9151         pTrack->pThread = pThread;
9152         ThreadTrackInfo **pSlot = pTrackList->Append();
9153         *pSlot = pTrack;
9154     }
9155
9156     InterlockedIncrement((LONG*)&m_dwThreadEnterCount);
9157     Frame **pSlot;
9158     if (pTrack)
9159     {
9160         pSlot = pTrack->frameStack.Insert(0);
9161         *pSlot = pFrame;
9162     }
9163     int totThreads = 0;
9164     for (i=0; i < pTrackList->Count(); i++)
9165         totThreads += (*(pTrackList->Get(i)))->frameStack.Count();
9166     _ASSERTE(totThreads == (int)m_dwThreadEnterCount);
9167
9168     InterlockedExchange((LONG*)&m_TrackSpinLock, 0);
9169 }
9170
9171
9172 void AppDomain::TrackADThreadExit(Thread *pThread, Frame *pFrame)
9173 {
9174     CONTRACTL
9175     {
9176         if (GetThread()) {MODE_COOPERATIVE;}
9177         NOTHROW;
9178         GC_NOTRIGGER;
9179     }
9180     CONTRACTL_END;
9181
9182     while (FastInterlockCompareExchange((LONG*)&m_TrackSpinLock, 1, 0) != 0)
9183         ;
9184     ThreadTrackInfoList *pTrackList= m_pThreadTrackInfoList;
9185     _ASSERTE(pTrackList);
9186     ThreadTrackInfo *pTrack = NULL;
9187     int i;
9188     for (i=0; i < pTrackList->Count(); i++)
9189     {
9190         if ((*(pTrackList->Get(i)))->pThread == pThread)
9191         {
9192             pTrack = *(pTrackList->Get(i));
9193             break;
9194         }
9195     }
9196     _ASSERTE(pTrack);
9197     _ASSERTE(*(pTrack->frameStack.Get(0)) == pFrame);
9198     pTrack->frameStack.Delete(0);
9199     InterlockedDecrement((LONG*)&m_dwThreadEnterCount);
9200
9201     int totThreads = 0;
9202     for (i=0; i < pTrackList->Count(); i++)
9203         totThreads += (*(pTrackList->Get(i)))->frameStack.Count();
9204     _ASSERTE(totThreads == (int)m_dwThreadEnterCount);
9205
9206     InterlockedExchange((LONG*)&m_TrackSpinLock, 0);
9207 }
9208
9209 void AppDomain::DumpADThreadTrack()
9210 {
9211     CONTRACTL
9212     {
9213         NOTHROW;
9214         GC_NOTRIGGER;
9215         MODE_COOPERATIVE;
9216     }
9217     CONTRACTL_END;
9218
9219     while (FastInterlockCompareExchange((LONG*)&m_TrackSpinLock, 1, 0) != 0)
9220         ;
9221     ThreadTrackInfoList *pTrackList= m_pThreadTrackInfoList;
9222     if (!pTrackList)
9223         goto end;
9224
9225     {
9226         LOG((LF_APPDOMAIN, LL_INFO10000, "\nThread dump of %d threads for [%d] %#08x %S\n",
9227              m_dwThreadEnterCount, GetId().m_dwId, this, GetFriendlyNameForLogging()));
9228         int totThreads = 0;
9229         for (int i=0; i < pTrackList->Count(); i++)
9230         {
9231             ThreadTrackInfo *pTrack = *(pTrackList->Get(i));
9232             if (pTrack->frameStack.Count()==0)
9233                 continue;
9234             LOG((LF_APPDOMAIN, LL_INFO100, "  ADEnterCount for %x is %d\n", pTrack->pThread->GetThreadId(), pTrack->frameStack.Count()));
9235             totThreads += pTrack->frameStack.Count();
9236             for (int j=0; j < pTrack->frameStack.Count(); j++)
9237                 LOG((LF_APPDOMAIN, LL_INFO100, "      frame %8.8x\n", *(pTrack->frameStack.Get(j))));
9238         }
9239         _ASSERTE(totThreads == (int)m_dwThreadEnterCount);
9240     }
9241 end:
9242     InterlockedExchange((LONG*)&m_TrackSpinLock, 0);
9243 }
9244 #endif // _DEBUG
9245
9246
9247 #endif // CROSSGEN_COMPILE
9248
9249 void *SharedDomain::operator new(size_t size, void *pInPlace)
9250 {
9251     LIMITED_METHOD_CONTRACT;
9252     return pInPlace;
9253 }
9254
9255 void SharedDomain::operator delete(void *pMem)
9256 {
9257     LIMITED_METHOD_CONTRACT;
9258     // Do nothing - new() was in-place
9259 }
9260
9261
9262 void SharedDomain::Attach()
9263 {
9264     CONTRACTL
9265     {
9266         THROWS;
9267         GC_TRIGGERS;
9268         MODE_ANY;
9269         INJECT_FAULT(COMPlusThrowOM(););
9270     }
9271     CONTRACTL_END;
9272
9273     // Create the global SharedDomain and initialize it.
9274     m_pSharedDomain = new (&g_pSharedDomainMemory[0]) SharedDomain();
9275     SystemDomain::GetGlobalLoaderAllocator()->m_pDomain = m_pSharedDomain;
9276     // This cannot fail since g_pSharedDomainMemory is a static array.
9277     CONSISTENCY_CHECK(CheckPointer(m_pSharedDomain));
9278
9279     LOG((LF_CLASSLOADER,
9280          LL_INFO10,
9281          "Created shared domain at %p\n",
9282          m_pSharedDomain));
9283
9284     // We need to initialize the memory pools etc. for the system domain.
9285     m_pSharedDomain->Init(); // Setup the memory heaps
9286
9287     // allocate a Virtual Call Stub Manager for the shared domain
9288     m_pSharedDomain->InitVSD();
9289 }
9290
9291 #ifndef CROSSGEN_COMPILE
9292 void SharedDomain::Detach()
9293 {
9294     if (m_pSharedDomain)
9295     {
9296         m_pSharedDomain->Terminate();
9297         delete m_pSharedDomain;
9298         m_pSharedDomain = NULL;
9299     }
9300 }
9301 #endif // CROSSGEN_COMPILE
9302
9303 #endif // !DACCESS_COMPILE
9304
9305 SharedDomain *SharedDomain::GetDomain()
9306 {
9307     LIMITED_METHOD_DAC_CONTRACT;
9308
9309     return m_pSharedDomain;
9310 }
9311
9312 #ifndef DACCESS_COMPILE
9313
9314 #define INITIAL_ASSEMBLY_MAP_SIZE 17
9315 void SharedDomain::Init()
9316 {
9317     CONTRACTL
9318     {
9319         THROWS;
9320         GC_TRIGGERS;
9321         MODE_ANY;
9322         INJECT_FAULT(COMPlusThrowOM(););
9323     }
9324     CONTRACTL_END;
9325
9326     BaseDomain::Init();
9327
9328 #ifdef FEATURE_LOADER_OPTIMIZATION
9329     m_FileCreateLock.Init(CrstSharedAssemblyCreate, CRST_DEFAULT,TRUE);
9330
9331     LockOwner lock = { &m_DomainCrst, IsOwnerOfCrst };
9332     m_assemblyMap.Init(INITIAL_ASSEMBLY_MAP_SIZE, CompareSharedAssembly, TRUE, &lock);
9333 #endif // FEATURE_LOADER_OPTIMIZATION
9334
9335     ETW::LoaderLog::DomainLoad(this);
9336 }
9337
9338 #ifndef CROSSGEN_COMPILE
9339 void SharedDomain::Terminate()
9340 {
9341     // make sure we delete the StringLiteralMap before unloading
9342     // the asemblies since the string literal map entries can
9343     // point to metadata string literals.
9344     GetLoaderAllocator()->CleanupStringLiteralMap();
9345
9346 #ifdef FEATURE_LOADER_OPTIMIZATION
9347     PtrHashMap::PtrIterator i = m_assemblyMap.begin();
9348
9349     while (!i.end())
9350     {
9351         Assembly *pAssembly = (Assembly*) i.GetValue();
9352         delete pAssembly;
9353         ++i;
9354     }
9355
9356     ListLockEntry* pElement;
9357     pElement = m_FileCreateLock.Pop(TRUE);
9358     while (pElement)
9359     {
9360 #ifdef STRICT_CLSINITLOCK_ENTRY_LEAK_DETECTION
9361         _ASSERTE (dbg_fDrasticShutdown || g_fInControlC);
9362 #endif
9363         delete(pElement);
9364         pElement = (FileLoadLock*) m_FileCreateLock.Pop(TRUE);
9365     }
9366     m_FileCreateLock.Destroy();
9367 #endif // FEATURE_LOADER_OPTIMIZATION
9368     BaseDomain::Terminate();
9369 }
9370 #endif // CROSSGEN_COMPILE
9371
9372
9373
9374 #ifdef FEATURE_LOADER_OPTIMIZATION
9375
9376 BOOL SharedDomain::CompareSharedAssembly(UPTR u1, UPTR u2)
9377 {
9378     CONTRACTL
9379     {
9380         THROWS;
9381         GC_TRIGGERS;
9382         MODE_ANY;
9383     }
9384     CONTRACTL_END;
9385
9386     // This is the input to the lookup
9387     SharedAssemblyLocator *pLocator = (SharedAssemblyLocator *) (u1<<1);
9388
9389     // This is the value stored in the table
9390     Assembly *pAssembly = (Assembly *) u2;
9391     if (pLocator->GetType()==SharedAssemblyLocator::DOMAINASSEMBLY)
9392     {
9393         if (!pAssembly->GetManifestFile()->Equals(pLocator->GetDomainAssembly()->GetFile()))
9394             return FALSE;
9395
9396         return pAssembly->CanBeShared(pLocator->GetDomainAssembly());
9397     }
9398     else
9399     if (pLocator->GetType()==SharedAssemblyLocator::PEASSEMBLY)
9400         return pAssembly->GetManifestFile()->Equals(pLocator->GetPEAssembly());
9401     else
9402     if (pLocator->GetType()==SharedAssemblyLocator::PEASSEMBLYEXACT)
9403         return pAssembly->GetManifestFile() == pLocator->GetPEAssembly();
9404      _ASSERTE(!"Unexpected type of assembly locator");
9405     return FALSE;
9406 }
9407
9408 DWORD SharedAssemblyLocator::Hash()
9409 {
9410     CONTRACTL
9411     {
9412         THROWS;
9413         GC_TRIGGERS;
9414         MODE_ANY;
9415         INJECT_FAULT(COMPlusThrowOM(););
9416     }
9417     CONTRACTL_END;
9418     if (m_type==DOMAINASSEMBLY)
9419         return GetDomainAssembly()->HashIdentity();
9420     if (m_type==PEASSEMBLY||m_type==PEASSEMBLYEXACT)
9421         return GetPEAssembly()->HashIdentity();
9422      _ASSERTE(!"Unexpected type of assembly locator");
9423      return 0;
9424 }
9425
9426 Assembly * SharedDomain::FindShareableAssembly(SharedAssemblyLocator * pLocator)
9427 {
9428     CONTRACTL
9429     {
9430         THROWS;
9431         GC_TRIGGERS;
9432         MODE_ANY;
9433         INJECT_FAULT(COMPlusThrowOM(););
9434     }
9435     CONTRACTL_END;
9436
9437     Assembly * match= (Assembly *) m_assemblyMap.LookupValue(pLocator->Hash(), pLocator);
9438     if (match != (Assembly *) INVALIDENTRY)
9439         return match;
9440     else
9441         return NULL;
9442 }
9443
9444 SIZE_T SharedDomain::GetShareableAssemblyCount()
9445 {
9446     LIMITED_METHOD_CONTRACT;
9447
9448     return m_assemblyMap.GetCount();
9449 }
9450
9451 void SharedDomain::AddShareableAssembly(Assembly * pAssembly)
9452 {
9453     CONTRACTL
9454     {
9455         THROWS;
9456         GC_TRIGGERS;
9457         MODE_ANY;
9458         INJECT_FAULT(COMPlusThrowOM(););
9459     }
9460     CONTRACTL_END;
9461
9462     // We have a lock on the file. There should be no races to add the same assembly.
9463
9464     {
9465         LockHolder holder(this);
9466
9467         EX_TRY
9468         {
9469             pAssembly->SetIsTenured();
9470             m_assemblyMap.InsertValue(pAssembly->HashIdentity(), pAssembly);
9471         }
9472         EX_HOOK
9473         {
9474             // There was an error adding the assembly to the assembly hash (probably an OOM),
9475             // so we need to unset the tenured bit so that correct cleanup can happen.
9476             pAssembly->UnsetIsTenured();
9477         }
9478         EX_END_HOOK
9479     }
9480
9481     LOG((LF_CODESHARING,
9482          LL_INFO100,
9483          "Successfully added shareable assembly \"%s\".\n",
9484          pAssembly->GetManifestFile()->GetSimpleName()));
9485 }
9486
9487 #endif // FEATURE_LOADER_OPTIMIZATION
9488 #endif // !DACCESS_COMPILE
9489
9490 DWORD DomainLocalModule::GetClassFlags(MethodTable* pMT, DWORD iClassIndex /*=(DWORD)-1*/)
9491 {
9492     CONTRACTL {
9493         NOTHROW;
9494         GC_NOTRIGGER;
9495         SO_TOLERANT;
9496     } CONTRACTL_END;
9497
9498     {   // SO tolerance exception for debug-only assertion.
9499         CONTRACT_VIOLATION(SOToleranceViolation);
9500         CONSISTENCY_CHECK(GetDomainFile()->GetModule() == pMT->GetModuleForStatics());
9501     }
9502
9503     if (pMT->IsDynamicStatics())
9504     {
9505         _ASSERTE(!pMT->ContainsGenericVariables());
9506         DWORD dynamicClassID = pMT->GetModuleDynamicEntryID();
9507         if(m_aDynamicEntries <= dynamicClassID)
9508             return FALSE;
9509         return (m_pDynamicClassTable[dynamicClassID].m_dwFlags);
9510     }
9511     else
9512     {
9513         if (iClassIndex == (DWORD)-1)
9514             iClassIndex = pMT->GetClassIndex();
9515         return GetPrecomputedStaticsClassData()[iClassIndex];
9516     }
9517 }
9518
9519 #ifndef DACCESS_COMPILE
9520
9521 void DomainLocalModule::SetClassInitialized(MethodTable* pMT)
9522 {
9523     CONTRACTL
9524     {
9525         THROWS;
9526         GC_TRIGGERS;
9527         MODE_ANY;
9528     }
9529     CONTRACTL_END;
9530
9531     BaseDomain::DomainLocalBlockLockHolder lh(GetDomainFile()->GetAppDomain());
9532
9533     _ASSERTE(!IsClassInitialized(pMT));
9534     _ASSERTE(!IsClassInitError(pMT));
9535
9536     SetClassFlags(pMT, ClassInitFlags::INITIALIZED_FLAG);
9537 }
9538
9539 void DomainLocalModule::SetClassInitError(MethodTable* pMT)
9540 {
9541     WRAPPER_NO_CONTRACT;
9542
9543     BaseDomain::DomainLocalBlockLockHolder lh(GetDomainFile()->GetAppDomain());
9544
9545     SetClassFlags(pMT, ClassInitFlags::ERROR_FLAG);
9546 }
9547
9548 void DomainLocalModule::SetClassFlags(MethodTable* pMT, DWORD dwFlags)
9549 {
9550     CONTRACTL {
9551         THROWS;
9552         GC_TRIGGERS;
9553         PRECONDITION(GetDomainFile()->GetModule() == pMT->GetModuleForStatics());
9554         // Assumes BaseDomain::DomainLocalBlockLockHolder is taken
9555         PRECONDITION(GetDomainFile()->GetAppDomain()->OwnDomainLocalBlockLock());
9556     } CONTRACTL_END;
9557
9558     if (pMT->IsDynamicStatics())
9559     {
9560         _ASSERTE(!pMT->ContainsGenericVariables());
9561         DWORD dwID = pMT->GetModuleDynamicEntryID();
9562         EnsureDynamicClassIndex(dwID);
9563         m_pDynamicClassTable[dwID].m_dwFlags |= dwFlags;
9564     }
9565     else
9566     {
9567         GetPrecomputedStaticsClassData()[pMT->GetClassIndex()] |= dwFlags;
9568     }
9569 }
9570
9571 void DomainLocalModule::EnsureDynamicClassIndex(DWORD dwID)
9572 {
9573     CONTRACTL
9574     {
9575         THROWS;
9576         GC_TRIGGERS;
9577         MODE_ANY;
9578         INJECT_FAULT(COMPlusThrowOM(););
9579         // Assumes BaseDomain::DomainLocalBlockLockHolder is taken
9580         PRECONDITION(GetDomainFile()->GetAppDomain()->OwnDomainLocalBlockLock());
9581     }
9582     CONTRACTL_END;
9583
9584     if (dwID < m_aDynamicEntries)
9585     {
9586         _ASSERTE(m_pDynamicClassTable.Load() != NULL);
9587         return;
9588     }
9589
9590     SIZE_T aDynamicEntries = max(16, m_aDynamicEntries.Load());
9591     while (aDynamicEntries <= dwID)
9592     {
9593         aDynamicEntries *= 2;
9594     }
9595
9596     DynamicClassInfo* pNewDynamicClassTable;
9597     pNewDynamicClassTable = (DynamicClassInfo*)
9598         (void*)GetDomainFile()->GetLoaderAllocator()->GetHighFrequencyHeap()->AllocMem(
9599             S_SIZE_T(sizeof(DynamicClassInfo)) * S_SIZE_T(aDynamicEntries));
9600
9601     memcpy(pNewDynamicClassTable, m_pDynamicClassTable, sizeof(DynamicClassInfo) * m_aDynamicEntries);
9602
9603     // Note: Memory allocated on loader heap is zero filled
9604     // memset(pNewDynamicClassTable + m_aDynamicEntries, 0, (aDynamicEntries - m_aDynamicEntries) * sizeof(DynamicClassInfo));
9605
9606     _ASSERTE(m_aDynamicEntries%2 == 0);
9607
9608     // Commit new dynamic table. The lock-free helpers depend on the order.
9609     MemoryBarrier();
9610     m_pDynamicClassTable = pNewDynamicClassTable;
9611     MemoryBarrier();
9612     m_aDynamicEntries = aDynamicEntries;
9613 }
9614
9615 #ifndef CROSSGEN_COMPILE
9616 void    DomainLocalModule::AllocateDynamicClass(MethodTable *pMT)
9617 {
9618     CONTRACTL
9619     {
9620         THROWS;
9621         GC_TRIGGERS;
9622         // Assumes BaseDomain::DomainLocalBlockLockHolder is taken
9623         PRECONDITION(GetDomainFile()->GetAppDomain()->OwnDomainLocalBlockLock());
9624     }
9625     CONTRACTL_END;
9626
9627     _ASSERTE(!pMT->ContainsGenericVariables());
9628     _ASSERTE(!pMT->IsSharedByGenericInstantiations());
9629     _ASSERTE(GetDomainFile()->GetModule() == pMT->GetModuleForStatics());
9630     _ASSERTE(pMT->IsDynamicStatics());
9631
9632     DWORD dynamicEntryIDIndex = pMT->GetModuleDynamicEntryID();
9633
9634     EnsureDynamicClassIndex(dynamicEntryIDIndex);
9635
9636     _ASSERTE(m_aDynamicEntries > dynamicEntryIDIndex);
9637
9638     EEClass *pClass = pMT->GetClass();
9639
9640     DWORD dwStaticBytes = pClass->GetNonGCRegularStaticFieldBytes();
9641     DWORD dwNumHandleStatics = pClass->GetNumHandleRegularStatics();
9642
9643     _ASSERTE(!IsClassAllocated(pMT));
9644     _ASSERTE(!IsClassInitialized(pMT));
9645     _ASSERTE(!IsClassInitError(pMT));
9646
9647     DynamicEntry *pDynamicStatics = m_pDynamicClassTable[dynamicEntryIDIndex].m_pDynamicEntry;
9648
9649     // We need this check because maybe a class had a cctor but no statics
9650     if (dwStaticBytes > 0 || dwNumHandleStatics > 0)
9651     {
9652         if (pDynamicStatics == NULL)
9653         {
9654             LoaderHeap * pLoaderAllocator = GetDomainFile()->GetLoaderAllocator()->GetHighFrequencyHeap();
9655
9656             if (pMT->Collectible())
9657             {
9658                 pDynamicStatics = (DynamicEntry*)(void*)pLoaderAllocator->AllocMem(S_SIZE_T(sizeof(CollectibleDynamicEntry)));
9659             }
9660             else
9661             {
9662                 SIZE_T dynamicEntrySize = DynamicEntry::GetOffsetOfDataBlob() + dwStaticBytes;
9663
9664 #ifdef FEATURE_64BIT_ALIGNMENT
9665                 // Allocate memory with extra alignment only if it is really necessary
9666                 if (dwStaticBytes >= MAX_PRIMITIVE_FIELD_SIZE)
9667                 {
9668                     static_assert_no_msg(sizeof(NormalDynamicEntry) % MAX_PRIMITIVE_FIELD_SIZE == 0);
9669                     pDynamicStatics = (DynamicEntry*)(void*)pLoaderAllocator->AllocAlignedMem(dynamicEntrySize, MAX_PRIMITIVE_FIELD_SIZE);
9670                 }
9671                 else
9672 #endif
9673                     pDynamicStatics = (DynamicEntry*)(void*)pLoaderAllocator->AllocMem(S_SIZE_T(dynamicEntrySize));
9674             }
9675
9676             // Note: Memory allocated on loader heap is zero filled
9677
9678             m_pDynamicClassTable[dynamicEntryIDIndex].m_pDynamicEntry = pDynamicStatics;
9679         }
9680
9681         if (pMT->Collectible() && (dwStaticBytes != 0))
9682         {
9683             GCX_COOP();
9684             OBJECTREF nongcStaticsArray = NULL;
9685             GCPROTECT_BEGIN(nongcStaticsArray);
9686 #ifdef FEATURE_64BIT_ALIGNMENT
9687             // Allocate memory with extra alignment only if it is really necessary
9688             if (dwStaticBytes >= MAX_PRIMITIVE_FIELD_SIZE)
9689                 nongcStaticsArray = AllocatePrimitiveArray(ELEMENT_TYPE_I8, (dwStaticBytes + (sizeof(CLR_I8)-1)) / (sizeof(CLR_I8)));
9690             else
9691 #endif
9692                 nongcStaticsArray = AllocatePrimitiveArray(ELEMENT_TYPE_U1, dwStaticBytes);
9693             ((CollectibleDynamicEntry *)pDynamicStatics)->m_hNonGCStatics = GetDomainFile()->GetModule()->GetLoaderAllocator()->AllocateHandle(nongcStaticsArray);
9694             GCPROTECT_END();
9695         }
9696         if (dwNumHandleStatics > 0)
9697         {
9698             if (!pMT->Collectible())
9699             {
9700                 GetAppDomain()->AllocateStaticFieldObjRefPtrs(dwNumHandleStatics,
9701                                                               &((NormalDynamicEntry *)pDynamicStatics)->m_pGCStatics);
9702             }
9703             else
9704             {
9705                 GCX_COOP();
9706                 OBJECTREF gcStaticsArray = NULL;
9707                 GCPROTECT_BEGIN(gcStaticsArray);
9708                 gcStaticsArray = AllocateObjectArray(dwNumHandleStatics, g_pObjectClass);
9709                 ((CollectibleDynamicEntry *)pDynamicStatics)->m_hGCStatics = GetDomainFile()->GetModule()->GetLoaderAllocator()->AllocateHandle(gcStaticsArray);
9710                 GCPROTECT_END();
9711             }
9712         }
9713     }
9714 }
9715
9716
9717 void DomainLocalModule::PopulateClass(MethodTable *pMT)
9718 {
9719     CONTRACTL
9720     {
9721         THROWS;
9722         GC_TRIGGERS;
9723     }
9724     CONTRACTL_END;
9725
9726     _ASSERTE(!pMT->ContainsGenericVariables());
9727
9728     // <todo> the only work actually done here for non-dynamics is the freezing related work.
9729     // See if we can eliminate this and make this a dynamic-only path </todo>
9730     DWORD iClassIndex = pMT->GetClassIndex();
9731
9732     if (!IsClassAllocated(pMT, iClassIndex))
9733     {
9734         BaseDomain::DomainLocalBlockLockHolder lh(GetDomainFile()->GetAppDomain());
9735
9736         if (!IsClassAllocated(pMT, iClassIndex))
9737         {
9738             // Allocate dynamic space if necessary
9739             if (pMT->IsDynamicStatics())
9740                 AllocateDynamicClass(pMT);
9741
9742             // determine flags to set on the statics block
9743             DWORD dwFlags = ClassInitFlags::ALLOCATECLASS_FLAG;
9744
9745             if (!pMT->HasClassConstructor() && !pMT->HasBoxedRegularStatics())
9746             {
9747                 _ASSERTE(!IsClassInitialized(pMT));
9748                 _ASSERTE(!IsClassInitError(pMT));
9749                 dwFlags |= ClassInitFlags::INITIALIZED_FLAG;
9750             }
9751
9752             if (pMT->Collectible())
9753             {
9754                 dwFlags |= ClassInitFlags::COLLECTIBLE_FLAG;
9755             }
9756
9757             // Set all flags at the same time to avoid races
9758             SetClassFlags(pMT, dwFlags);
9759         }
9760     }
9761
9762     return;
9763 }
9764 #endif // CROSSGEN_COMPILE
9765
9766 void DomainLocalBlock::EnsureModuleIndex(ModuleIndex index)
9767 {
9768     CONTRACTL
9769     {
9770         THROWS;
9771         GC_TRIGGERS;
9772         MODE_ANY;
9773         INJECT_FAULT(COMPlusThrowOM(););
9774         // Assumes BaseDomain::DomainLocalBlockLockHolder is taken
9775         PRECONDITION(m_pDomain->OwnDomainLocalBlockLock());
9776     }
9777     CONTRACTL_END;
9778
9779     if (m_aModuleIndices > index.m_dwIndex)
9780     {
9781         _ASSERTE(m_pModuleSlots != NULL);
9782         return;
9783     }
9784
9785     SIZE_T aModuleIndices = max(16, m_aModuleIndices);
9786     while (aModuleIndices <= index.m_dwIndex)
9787     {
9788         aModuleIndices *= 2;
9789     }
9790
9791     PTR_DomainLocalModule* pNewModuleSlots = (PTR_DomainLocalModule*) (void*)m_pDomain->GetHighFrequencyHeap()->AllocMem(S_SIZE_T(sizeof(PTR_DomainLocalModule)) * S_SIZE_T(aModuleIndices));
9792
9793     memcpy(pNewModuleSlots, m_pModuleSlots, sizeof(SIZE_T)*m_aModuleIndices);
9794
9795     // Note: Memory allocated on loader heap is zero filled
9796     // memset(pNewModuleSlots + m_aModuleIndices, 0 , (aModuleIndices - m_aModuleIndices)*sizeof(PTR_DomainLocalModule) );
9797
9798     // Commit new table. The lock-free helpers depend on the order.
9799     MemoryBarrier();
9800     m_pModuleSlots = pNewModuleSlots;
9801     MemoryBarrier();
9802     m_aModuleIndices = aModuleIndices;
9803
9804 }
9805
9806 void DomainLocalBlock::SetModuleSlot(ModuleIndex index, PTR_DomainLocalModule pLocalModule)
9807 {
9808     // Need to synchronize with table growth in this domain
9809     BaseDomain::DomainLocalBlockLockHolder lh(m_pDomain);
9810
9811     EnsureModuleIndex(index);
9812
9813     _ASSERTE(index.m_dwIndex < m_aModuleIndices);
9814
9815     // We would like this assert here, unfortunately, loading a module in this appdomain can fail
9816     // after here  and we will keep the module around and reuse the slot when we retry (if
9817     // the failure happened due to a transient error, such as OOM). In that case the slot wont
9818     // be null.
9819     //_ASSERTE(m_pModuleSlots[index.m_dwIndex] == 0);
9820
9821     m_pModuleSlots[index.m_dwIndex] = pLocalModule;
9822 }
9823
9824 #ifndef CROSSGEN_COMPILE
9825
9826 DomainAssembly* AppDomain::RaiseTypeResolveEventThrowing(DomainAssembly* pAssembly, LPCSTR szName, ASSEMBLYREF *pResultingAssemblyRef)
9827 {
9828     CONTRACTL
9829     {
9830         MODE_ANY;
9831         GC_TRIGGERS;
9832         THROWS;
9833         INJECT_FAULT(COMPlusThrowOM(););
9834     }
9835     CONTRACTL_END;
9836
9837     OVERRIDE_TYPE_LOAD_LEVEL_LIMIT(CLASS_LOADED);
9838
9839
9840     DomainAssembly* pResolvedAssembly = NULL;
9841     _ASSERTE(strcmp(szName, g_AppDomainClassName));
9842
9843     GCX_COOP();
9844
9845     struct _gc {
9846         OBJECTREF AppDomainRef;
9847         OBJECTREF AssemblyRef;
9848         STRINGREF str;
9849     } gc;
9850     ZeroMemory(&gc, sizeof(gc));
9851
9852     GCPROTECT_BEGIN(gc);
9853     if ((gc.AppDomainRef = GetRawExposedObject()) != NULL)
9854     {
9855         if (pAssembly != NULL)
9856             gc.AssemblyRef = pAssembly->GetExposedAssemblyObject();
9857
9858         MethodDescCallSite onTypeResolve(METHOD__APP_DOMAIN__ON_TYPE_RESOLVE, &gc.AppDomainRef);
9859
9860         gc.str = StringObject::NewString(szName);
9861         ARG_SLOT args[3] =
9862         {
9863             ObjToArgSlot(gc.AppDomainRef),
9864             ObjToArgSlot(gc.AssemblyRef),
9865             ObjToArgSlot(gc.str)
9866         };
9867         ASSEMBLYREF ResultingAssemblyRef = (ASSEMBLYREF) onTypeResolve.Call_RetOBJECTREF(args);
9868
9869         if (ResultingAssemblyRef != NULL)
9870         {
9871             pResolvedAssembly = ResultingAssemblyRef->GetDomainAssembly();
9872
9873             if (pResultingAssemblyRef)
9874                 *pResultingAssemblyRef = ResultingAssemblyRef;
9875             else
9876             {
9877                 if (pResolvedAssembly->IsCollectible())
9878                 {
9879                     COMPlusThrow(kNotSupportedException, W("NotSupported_CollectibleBoundNonCollectible"));
9880                 }
9881             }
9882         }
9883     }
9884     GCPROTECT_END();
9885
9886     return pResolvedAssembly;
9887 }
9888
9889
9890 Assembly* AppDomain::RaiseResourceResolveEvent(DomainAssembly* pAssembly, LPCSTR szName)
9891 {
9892     CONTRACT(Assembly*)
9893     {
9894         THROWS;
9895         GC_TRIGGERS;
9896         MODE_ANY;
9897         POSTCONDITION(CheckPointer(RETVAL, NULL_OK));
9898         INJECT_FAULT(COMPlusThrowOM(););
9899     }
9900     CONTRACT_END;
9901
9902     Assembly* pResolvedAssembly = NULL;
9903
9904     GCX_COOP();
9905
9906     struct _gc {
9907         OBJECTREF AppDomainRef;
9908         OBJECTREF AssemblyRef;
9909         STRINGREF str;
9910     } gc;
9911     ZeroMemory(&gc, sizeof(gc));
9912
9913     GCPROTECT_BEGIN(gc);
9914     if ((gc.AppDomainRef = GetRawExposedObject()) != NULL)
9915     {
9916         if (pAssembly != NULL)
9917             gc.AssemblyRef=pAssembly->GetExposedAssemblyObject();
9918
9919         MethodDescCallSite onResourceResolve(METHOD__APP_DOMAIN__ON_RESOURCE_RESOLVE, &gc.AppDomainRef);
9920         gc.str = StringObject::NewString(szName);
9921         ARG_SLOT args[3] =
9922         {
9923             ObjToArgSlot(gc.AppDomainRef),
9924             ObjToArgSlot(gc.AssemblyRef),
9925             ObjToArgSlot(gc.str)
9926         };
9927         ASSEMBLYREF ResultingAssemblyRef = (ASSEMBLYREF) onResourceResolve.Call_RetOBJECTREF(args);
9928         if (ResultingAssemblyRef != NULL)
9929         {
9930             pResolvedAssembly = ResultingAssemblyRef->GetAssembly();
9931             if (pResolvedAssembly->IsCollectible())
9932             {
9933                 COMPlusThrow(kNotSupportedException, W("NotSupported_CollectibleAssemblyResolve"));
9934             }
9935         }
9936     }
9937     GCPROTECT_END();
9938
9939     RETURN pResolvedAssembly;
9940 }
9941
9942
9943 Assembly *
9944 AppDomain::RaiseAssemblyResolveEvent(
9945     AssemblySpec * pSpec,
9946     BOOL           fIntrospection,
9947     BOOL           fPreBind)
9948 {
9949     CONTRACT(Assembly*)
9950     {
9951         THROWS;
9952         GC_TRIGGERS;
9953         MODE_ANY;
9954         POSTCONDITION(CheckPointer(RETVAL, NULL_OK));
9955         INJECT_FAULT(COMPlusThrowOM(););
9956     }
9957     CONTRACT_END;
9958
9959     BinderMethodID methodId;
9960     StackSString ssName;
9961     pSpec->GetFileOrDisplayName(0, ssName);
9962
9963     if (!fPreBind)
9964     {
9965         methodId = METHOD__APP_DOMAIN__ON_ASSEMBLY_RESOLVE;  // post-bind execution event (the classic V1.0 event)
9966     }
9967     else
9968     {
9969         RETURN NULL;
9970     }
9971
9972
9973     // Elevate threads allowed loading level.  This allows the host to load an assembly even in a restricted
9974     // condition.  Note, however, that this exposes us to possible recursion failures, if the host tries to
9975     // load the assemblies currently being loaded.  (Such cases would then throw an exception.)
9976
9977     OVERRIDE_LOAD_LEVEL_LIMIT(FILE_ACTIVE);
9978     OVERRIDE_TYPE_LOAD_LEVEL_LIMIT(CLASS_LOADED);
9979
9980     GCX_COOP();
9981
9982     Assembly* pAssembly = NULL;
9983
9984     struct _gc {
9985         OBJECTREF AppDomainRef;
9986         OBJECTREF AssemblyRef;
9987         STRINGREF str;
9988     } gc;
9989     ZeroMemory(&gc, sizeof(gc));
9990
9991     GCPROTECT_BEGIN(gc);
9992     if ((gc.AppDomainRef = GetRawExposedObject()) != NULL)
9993     {
9994         if (pSpec->GetParentAssembly() != NULL)
9995         {
9996             {
9997                 gc.AssemblyRef=pSpec->GetParentAssembly()->GetExposedAssemblyObject();
9998             }
9999         }
10000         MethodDescCallSite onAssemblyResolve(methodId, &gc.AppDomainRef);
10001
10002         gc.str = StringObject::NewString(ssName);
10003         ARG_SLOT args[3] = {
10004             ObjToArgSlot(gc.AppDomainRef),
10005             ObjToArgSlot(gc.AssemblyRef),
10006             ObjToArgSlot(gc.str)
10007         };
10008
10009         ASSEMBLYREF ResultingAssemblyRef = (ASSEMBLYREF) onAssemblyResolve.Call_RetOBJECTREF(args);
10010
10011         if (ResultingAssemblyRef != NULL)
10012         {
10013             pAssembly = ResultingAssemblyRef->GetAssembly();
10014             if (pAssembly->IsCollectible())
10015             {
10016                 COMPlusThrow(kNotSupportedException, W("NotSupported_CollectibleAssemblyResolve"));
10017             }
10018         }
10019     }
10020     GCPROTECT_END();
10021
10022     if (pAssembly != NULL)
10023     {
10024         if  ((!(pAssembly->IsIntrospectionOnly())) != (!fIntrospection))
10025         {
10026             // Cannot return an introspection assembly from an execution callback or vice-versa
10027             COMPlusThrow(kFileLoadException, pAssembly->IsIntrospectionOnly() ? IDS_CLASSLOAD_ASSEMBLY_RESOLVE_RETURNED_INTROSPECTION : IDS_CLASSLOAD_ASSEMBLY_RESOLVE_RETURNED_EXECUTION);
10028         }
10029
10030         // Check that the public key token matches the one specified in the spec
10031         // MatchPublicKeys throws as appropriate
10032         pSpec->MatchPublicKeys(pAssembly);
10033     }
10034
10035     RETURN pAssembly;
10036 } // AppDomain::RaiseAssemblyResolveEvent
10037
10038
10039 //---------------------------------------------------------------------------------------
10040 //
10041 // Determine the type of AppDomainManager to use for the default AppDomain
10042 //
10043 // Notes:
10044 //   v2.0 of the CLR used environment variables APPDOMAIN_MANAGER_ASM and APPDOMAIN_MANAGER_TYPE to set the
10045 //   domain manager. For compatibility these are still supported, along with appDomainManagerAsm and
10046 //   appDomainManagerType config file switches. If the config switches are supplied, the entry point must be
10047 //   fully trusted.
10048 //
10049
10050 void AppDomain::InitializeDefaultDomainManager()
10051 {
10052     CONTRACTL
10053     {
10054         MODE_COOPERATIVE;
10055         GC_TRIGGERS;
10056         THROWS;
10057         INJECT_FAULT(COMPlusThrowOM(););
10058         PRECONDITION(GetId().m_dwId == DefaultADID);
10059     }
10060     CONTRACTL_END;
10061
10062     OBJECTREF orThis = GetExposedObject();
10063     GCPROTECT_BEGIN(orThis);
10064
10065     MethodDescCallSite initCompatFlags(METHOD__APP_DOMAIN__INITIALIZE_COMPATIBILITY_FLAGS);
10066     ARG_SLOT args[] =
10067     {
10068         ObjToArgSlot(orThis)
10069     };
10070
10071     initCompatFlags.Call(args);
10072
10073     GCPROTECT_END();
10074 }
10075
10076 CLREvent * AppDomain::g_pUnloadStartEvent;
10077
10078 void AppDomain::CreateADUnloadWorker()
10079 {
10080     STANDARD_VM_CONTRACT;
10081
10082     // Do not create adUnload thread if there is only default domain
10083     if(IsSingleAppDomain())
10084         return;
10085
10086 Retry:
10087     BOOL fCreator = FALSE;
10088     if (FastInterlockCompareExchange((LONG *)&g_fADUnloadWorkerOK,-2,-1)==-1)  //we're first
10089     {
10090 #ifdef _TARGET_X86_  // use the smallest possible stack on X86
10091         DWORD stackSize = 128 * 1024;
10092 #else
10093         DWORD stackSize = 512 * 1024; // leave X64 unchanged since we have plenty of VM
10094 #endif
10095         Thread *pThread = SetupUnstartedThread();
10096         if (pThread->CreateNewThread(stackSize, ADUnloadThreadStart, pThread))
10097         {
10098             fCreator = TRUE;
10099             DWORD dwRet;
10100             dwRet = pThread->StartThread();
10101
10102             // When running under a user mode native debugger there is a race
10103             // between the moment we've created the thread (in CreateNewThread) and
10104             // the moment we resume it (in StartThread); the debugger may receive
10105             // the "ct" (create thread) notification, and it will attempt to
10106             // suspend/resume all threads in the process.  Now imagine the debugger
10107             // resumes this thread first, and only later does it try to resume the
10108             // newly created thread (the ADU worker thread).  In these conditions our
10109             // call to ResumeThread may come before the debugger's call to ResumeThread
10110             // actually causing dwRet to equal 2.
10111             // We cannot use IsDebuggerPresent() in the condition below because the
10112             // debugger may have been detached between the time it got the notification
10113             // and the moment we execute the test below.
10114             _ASSERTE(dwRet == 1 || dwRet == 2);
10115         }
10116         else
10117         {
10118             pThread->DecExternalCount(FALSE);
10119             FastInterlockExchange((LONG *)&g_fADUnloadWorkerOK, -1);
10120             ThrowOutOfMemory();
10121         }
10122     }
10123
10124     YIELD_WHILE (g_fADUnloadWorkerOK == -2);
10125
10126     if (g_fADUnloadWorkerOK == -1) {
10127         if (fCreator)
10128         {
10129             ThrowOutOfMemory();
10130         }
10131         else
10132         {
10133             goto Retry;
10134         }
10135     }
10136 }
10137
10138 /*static*/ void AppDomain::ADUnloadWorkerHelper(AppDomain *pDomain)
10139 {
10140     STATIC_CONTRACT_NOTHROW;
10141     STATIC_CONTRACT_GC_TRIGGERS;
10142     STATIC_CONTRACT_MODE_COOPERATIVE;
10143     ADUnloadSink* pADUnloadSink=pDomain->GetADUnloadSinkForUnload();
10144     HRESULT hr=S_OK;
10145
10146     EX_TRY
10147     {
10148         pDomain->Unload(FALSE);
10149     }
10150     EX_CATCH_HRESULT(hr);
10151
10152     if(pADUnloadSink)
10153     {
10154         SystemDomain::LockHolder lh;
10155         pADUnloadSink->ReportUnloadResult(hr,NULL);
10156         pADUnloadSink->Release();
10157     }
10158 }
10159
10160 void AppDomain::DoADUnloadWork()
10161 {
10162     CONTRACTL
10163     {
10164         THROWS;
10165         GC_TRIGGERS;
10166         MODE_COOPERATIVE;
10167         INJECT_FAULT(COMPlusThrowOM(););
10168     }
10169     CONTRACTL_END;
10170
10171     DWORD i = 1;
10172     while (TRUE) {
10173
10174         AppDomain *pDomainToUnload = NULL;
10175
10176         {
10177             // Take the lock so that no domain can be added or removed from the system domain
10178             SystemDomain::LockHolder lh;
10179
10180             DWORD numDomain = SystemDomain::GetCurrentAppDomainMaxIndex();
10181             for (; i <= numDomain; i ++) {
10182                 AppDomain * pDomain = SystemDomain::TestGetAppDomainAtIndex(ADIndex(i));
10183                 //
10184                 // @todo: We used to also select a domain if pDomain->IsUnload() returned true. But that causes
10185                 // problems when we've failed to completely unload the AD in the past. If we've reached the CLEARED
10186                 // stage, for instance, then there will be no default context and AppDomain::Exit() will simply crash.
10187                 //
10188                 if (pDomain && pDomain->IsUnloadRequested())
10189                 {
10190                     pDomainToUnload = pDomain;
10191                     i ++;
10192                     break;
10193                 }
10194             }
10195         }
10196
10197         if (!pDomainToUnload) {
10198             break;
10199         }
10200
10201         // We are the only thread that can unload domains so no one else can delete the appdomain
10202         ADUnloadWorkerHelper(pDomainToUnload);
10203     }
10204 }
10205
10206 static void DoADUnloadWorkHelper()
10207 {
10208     STATIC_CONTRACT_NOTHROW;
10209     STATIC_CONTRACT_GC_TRIGGERS;
10210     STATIC_CONTRACT_MODE_COOPERATIVE;
10211
10212     EX_TRY {
10213         AppDomain::DoADUnloadWork();
10214     }
10215     EX_CATCH
10216     {
10217     }
10218     EX_END_CATCH(SwallowAllExceptions);
10219 }
10220
10221 ULONGLONG g_ObjFinalizeStartTime = 0;
10222 Volatile<BOOL> g_FinalizerIsRunning = FALSE;
10223 Volatile<ULONG> g_FinalizerLoopCount = 0;
10224
10225 ULONGLONG GetObjFinalizeStartTime()
10226 {
10227     LIMITED_METHOD_CONTRACT;
10228     return g_ObjFinalizeStartTime;
10229 }
10230
10231 void FinalizerThreadAbortOnTimeout()
10232 {
10233     STATIC_CONTRACT_NOTHROW;
10234     STATIC_CONTRACT_MODE_COOPERATIVE;
10235     STATIC_CONTRACT_GC_TRIGGERS;
10236
10237     {
10238         // If finalizer thread is blocked because scheduler is running another task,
10239         // or it is waiting for another thread, we first see if we get finalizer thread
10240         // running again.
10241         Thread::ThreadAbortWatchDog();
10242     }
10243
10244     EX_TRY
10245     {
10246         Thread *pFinalizerThread = FinalizerThread::GetFinalizerThread();
10247         EPolicyAction action = GetEEPolicy()->GetActionOnTimeout(OPR_FinalizerRun, pFinalizerThread);
10248         switch (action)
10249         {
10250         case eAbortThread:
10251             GetEEPolicy()->NotifyHostOnTimeout(OPR_FinalizerRun, action);
10252             pFinalizerThread->UserAbort(Thread::TAR_Thread,
10253                                         EEPolicy::TA_Safe,
10254                                         INFINITE,
10255                                         Thread::UAC_FinalizerTimeout);
10256             break;
10257         case eRudeAbortThread:
10258             GetEEPolicy()->NotifyHostOnTimeout(OPR_FinalizerRun, action);
10259             pFinalizerThread->UserAbort(Thread::TAR_Thread,
10260                                         EEPolicy::TA_Rude,
10261                                         INFINITE,
10262                                         Thread::UAC_FinalizerTimeout);
10263             break;
10264         case eUnloadAppDomain:
10265             {
10266                 AppDomain *pDomain = pFinalizerThread->GetDomain();
10267                 pFinalizerThread->UserAbort(Thread::TAR_Thread,
10268                                             EEPolicy::TA_Safe,
10269                                             INFINITE,
10270                                             Thread::UAC_FinalizerTimeout);
10271                 if (!pDomain->IsDefaultDomain())
10272                 {
10273                     GetEEPolicy()->NotifyHostOnTimeout(OPR_FinalizerRun, action);
10274                     pDomain->EnableADUnloadWorker(EEPolicy::ADU_Safe);
10275                 }
10276             }
10277             break;
10278         case eRudeUnloadAppDomain:
10279             {
10280                 AppDomain *pDomain = pFinalizerThread->GetDomain();
10281                 pFinalizerThread->UserAbort(Thread::TAR_Thread,
10282                                             EEPolicy::TA_Rude,
10283                                             INFINITE,
10284                                             Thread::UAC_FinalizerTimeout);
10285                 if (!pDomain->IsDefaultDomain())
10286                 {
10287                     GetEEPolicy()->NotifyHostOnTimeout(OPR_FinalizerRun, action);
10288                     pDomain->EnableADUnloadWorker(EEPolicy::ADU_Rude);
10289                 }
10290             }
10291             break;
10292         case eExitProcess:
10293         case eFastExitProcess:
10294         case eRudeExitProcess:
10295         case eDisableRuntime:
10296             GetEEPolicy()->NotifyHostOnTimeout(OPR_FinalizerRun, action);
10297             EEPolicy::HandleExitProcessFromEscalation(action, HOST_E_EXITPROCESS_TIMEOUT);
10298             _ASSERTE (!"Should not get here");
10299             break;
10300         default:
10301             break;
10302         }
10303     }
10304     EX_CATCH
10305     {
10306     }
10307     EX_END_CATCH(SwallowAllExceptions);
10308 }
10309
10310 enum WorkType
10311 {
10312     WT_UnloadDomain = 0x1,
10313     WT_ThreadAbort = 0x2,
10314     WT_FinalizerThread = 0x4,
10315     WT_ClearCollectedDomains=0x8
10316 };
10317
10318 static Volatile<DWORD> s_WorkType = 0;
10319
10320
10321 DWORD WINAPI AppDomain::ADUnloadThreadStart(void *args)
10322 {
10323     CONTRACTL
10324     {
10325         NOTHROW;
10326         DISABLED(GC_TRIGGERS);
10327
10328         // This function will always be at the very bottom of the stack. The only
10329         // user code it calls is the AppDomainUnload notifications which we will
10330         // not be hardenning for Whidbey.
10331         //
10332         ENTRY_POINT;
10333     }
10334     CONTRACTL_END;
10335
10336     BEGIN_ENTRYPOINT_NOTHROW;
10337
10338     ClrFlsSetThreadType (ThreadType_ADUnloadHelper);
10339
10340     Thread *pThread = (Thread*)args;
10341     bool fOK = (pThread->HasStarted() != 0);
10342
10343     {
10344         GCX_MAYBE_PREEMP(fOK);
10345
10346         _ASSERTE (g_fADUnloadWorkerOK == -2);
10347
10348         FastInterlockExchange((LONG *)&g_fADUnloadWorkerOK,fOK?1:-1);
10349
10350         if (!fOK)
10351         {
10352             DestroyThread(pThread);
10353             goto Exit;
10354         }
10355
10356         pThread->SetBackground(TRUE);
10357
10358         pThread->SetThreadStateNC(Thread::TSNC_ADUnloadHelper);
10359
10360         while (TRUE) {
10361             DWORD TAtimeout = INFINITE;
10362             ULONGLONG endTime = Thread::GetNextSelfAbortEndTime();
10363             ULONGLONG curTime = CLRGetTickCount64();
10364             if (endTime <= curTime) {
10365                 TAtimeout = 5;
10366             }
10367             else
10368             {
10369                 ULONGLONG diff = endTime - curTime;
10370                 if (diff < MAXULONG)
10371                 {
10372                     TAtimeout = (DWORD)diff;
10373                 }
10374             }
10375             ULONGLONG finalizeStartTime = GetObjFinalizeStartTime();
10376             DWORD finalizeTimeout = INFINITE;
10377             DWORD finalizeTimeoutSetting = GetEEPolicy()->GetTimeout(OPR_FinalizerRun);
10378             if (finalizeTimeoutSetting != INFINITE && g_FinalizerIsRunning)
10379             {
10380                 if (finalizeStartTime == 0)
10381                 {
10382                     finalizeTimeout = finalizeTimeoutSetting;
10383                 }
10384                 else
10385                 {
10386                     endTime = finalizeStartTime + finalizeTimeoutSetting;
10387                     if (endTime <= curTime) {
10388                         finalizeTimeout = 0;
10389                     }
10390                     else
10391                     {
10392                         ULONGLONG diff = endTime - curTime;
10393                         if (diff < MAXULONG)
10394                         {
10395                             finalizeTimeout = (DWORD)diff;
10396                         }
10397                     }
10398                 }
10399             }
10400
10401             if (AppDomain::HasWorkForFinalizerThread())
10402             {
10403                 if (finalizeTimeout > finalizeTimeoutSetting)
10404                 {
10405                     finalizeTimeout = finalizeTimeoutSetting;
10406                 }
10407             }
10408
10409             DWORD timeout = INFINITE;
10410             if (finalizeTimeout <= TAtimeout)
10411             {
10412                 timeout = finalizeTimeout;
10413             }
10414             else
10415             {
10416                 timeout = TAtimeout;
10417             }
10418
10419             if (timeout != 0)
10420             {
10421                 LOG((LF_APPDOMAIN, LL_INFO10, "Waiting to start unload\n"));
10422                 g_pUnloadStartEvent->Wait(timeout,FALSE);
10423             }
10424
10425             if (finalizeTimeout != INFINITE || (s_WorkType & WT_FinalizerThread) != 0)
10426             {
10427                 STRESS_LOG0(LF_ALWAYS, LL_ALWAYS, "ADUnloadThreadStart work for Finalizer thread\n");
10428                 FastInterlockAnd(&s_WorkType, ~WT_FinalizerThread);
10429                 // only watch finalizer thread is finalizer method or unloadevent is being processed
10430                 if (GetObjFinalizeStartTime() == finalizeStartTime && finalizeStartTime != 0 && g_FinalizerIsRunning)
10431                 {
10432                     if (CLRGetTickCount64() >= finalizeStartTime+finalizeTimeoutSetting)
10433                     {
10434                         GCX_COOP();
10435                         FinalizerThreadAbortOnTimeout();
10436                     }
10437                 }
10438                 if (s_fProcessUnloadDomainEvent && g_FinalizerIsRunning)
10439                 {
10440                     GCX_COOP();
10441                     FinalizerThreadAbortOnTimeout();
10442                 }
10443             }
10444
10445             if (TAtimeout != INFINITE || (s_WorkType & WT_ThreadAbort) != 0)
10446             {
10447                 STRESS_LOG0(LF_ALWAYS, LL_ALWAYS, "ADUnloadThreadStart work for thread abort\n");
10448                 FastInterlockAnd(&s_WorkType, ~WT_ThreadAbort);
10449                 GCX_COOP();
10450                 Thread::ThreadAbortWatchDog();
10451             }
10452
10453             if ((s_WorkType & WT_UnloadDomain) != 0 && !AppDomain::HasWorkForFinalizerThread())
10454             {
10455                 STRESS_LOG0(LF_ALWAYS, LL_ALWAYS, "ADUnloadThreadStart work for AD unload\n");
10456                 FastInterlockAnd(&s_WorkType, ~WT_UnloadDomain);
10457                 GCX_COOP();
10458                 DoADUnloadWorkHelper();
10459             }
10460
10461             if ((s_WorkType & WT_ClearCollectedDomains) != 0)
10462             {
10463                 STRESS_LOG0(LF_ALWAYS, LL_ALWAYS, "ADUnloadThreadStart work for AD cleanup\n");
10464                 FastInterlockAnd(&s_WorkType, ~WT_ClearCollectedDomains);
10465                 GCX_COOP();
10466                 SystemDomain::System()->ClearCollectedDomains();
10467             }
10468
10469         }
10470 Exit:;
10471     }
10472
10473     END_ENTRYPOINT_NOTHROW;
10474
10475     return 0;
10476 }
10477
10478 void AppDomain::EnableADUnloadWorker()
10479 {
10480     CONTRACTL
10481     {
10482         NOTHROW;
10483         GC_NOTRIGGER;
10484         SO_TOLERANT; // Called during a SO
10485     }
10486     CONTRACTL_END;
10487
10488     EEPolicy::AppDomainUnloadTypes type = EEPolicy::ADU_Safe;
10489
10490 #ifdef _DEBUG
10491     DWORD hostTestADUnload = g_pConfig->GetHostTestADUnload();
10492     if (hostTestADUnload == 2) {
10493         type = EEPolicy::ADU_Rude;
10494     }
10495 #endif // _DEBUG
10496
10497     EnableADUnloadWorker(type);
10498 }
10499
10500 void AppDomain::EnableADUnloadWorker(EEPolicy::AppDomainUnloadTypes type, BOOL fHasStack)
10501 {
10502     CONTRACTL
10503     {
10504         NOTHROW;
10505         GC_NOTRIGGER;
10506         SO_TOLERANT; // Called during a SO
10507     }
10508     CONTRACTL_END;
10509
10510     FastInterlockOr (&s_WorkType, WT_UnloadDomain);
10511
10512     LONG stage = m_Stage;
10513     static_assert_no_msg(sizeof(m_Stage) == sizeof(int));
10514
10515     _ASSERTE(!IsDefaultDomain());
10516
10517     // Mark unload requested.
10518     if (type == EEPolicy::ADU_Rude) {
10519         SetRudeUnload();
10520     }
10521     while (stage < STAGE_UNLOAD_REQUESTED) {
10522         stage = FastInterlockCompareExchange((LONG*)&m_Stage,STAGE_UNLOAD_REQUESTED,stage);
10523     }
10524
10525     if (!fHasStack)
10526     {
10527         // Can not call Set due to limited stack.
10528         return;
10529     }
10530     LOG((LF_APPDOMAIN, LL_INFO10, "Enabling unload worker\n"));
10531     g_pUnloadStartEvent->Set();
10532 }
10533
10534 void AppDomain::EnableADUnloadWorkerForThreadAbort()
10535 {
10536     LIMITED_METHOD_CONTRACT;
10537     STRESS_LOG0(LF_ALWAYS, LL_ALWAYS, "Enabling unload worker for thread abort\n");
10538     LOG((LF_APPDOMAIN, LL_INFO10, "Enabling unload worker for thread abort\n"));
10539     FastInterlockOr (&s_WorkType, WT_ThreadAbort);
10540     g_pUnloadStartEvent->Set();
10541 }
10542
10543
10544 void AppDomain::EnableADUnloadWorkerForFinalizer()
10545 {
10546     LIMITED_METHOD_CONTRACT;
10547     if (GetEEPolicy()->GetTimeout(OPR_FinalizerRun) != INFINITE)
10548     {
10549         LOG((LF_APPDOMAIN, LL_INFO10, "Enabling unload worker for Finalizer Thread\n"));
10550         FastInterlockOr (&s_WorkType, WT_FinalizerThread);
10551         g_pUnloadStartEvent->Set();
10552     }
10553 }
10554
10555 void AppDomain::EnableADUnloadWorkerForCollectedADCleanup()
10556 {
10557     LIMITED_METHOD_CONTRACT;
10558     LOG((LF_APPDOMAIN, LL_INFO10, "Enabling unload worker for collected domains\n"));
10559     FastInterlockOr (&s_WorkType, WT_ClearCollectedDomains);
10560     g_pUnloadStartEvent->Set();
10561 }
10562
10563
10564 void SystemDomain::ClearCollectedDomains()
10565 {
10566     CONTRACTL
10567     {
10568         GC_TRIGGERS;
10569         NOTHROW;
10570         MODE_COOPERATIVE;
10571     }
10572     CONTRACTL_END;
10573
10574     AppDomain* pDomainsToClear=NULL;
10575     {
10576         CrstHolder lh(&m_DelayedUnloadCrst);
10577         for (AppDomain** ppDomain=&m_pDelayedUnloadList;(*ppDomain)!=NULL; )
10578         {
10579             if ((*ppDomain)->m_Stage==AppDomain::STAGE_COLLECTED)
10580             {
10581                 AppDomain* pAppDomain=*ppDomain;
10582                 *ppDomain=(*ppDomain)->m_pNextInDelayedUnloadList;
10583                 pAppDomain->m_pNextInDelayedUnloadList=pDomainsToClear;
10584                 pDomainsToClear=pAppDomain;
10585             }
10586             else
10587                 ppDomain=&((*ppDomain)->m_pNextInDelayedUnloadList);
10588         }
10589     }
10590
10591     for (AppDomain* pDomain=pDomainsToClear;pDomain!=NULL;)
10592     {
10593         AppDomain* pNext=pDomain->m_pNextInDelayedUnloadList;
10594         pDomain->Close(); //NOTHROW!
10595         pDomain->Release();
10596         pDomain=pNext;
10597     }
10598 }
10599
10600 void SystemDomain::ProcessClearingDomains()
10601 {
10602     CONTRACTL
10603     {
10604         NOTHROW;
10605         GC_NOTRIGGER;
10606         MODE_ANY;
10607     }
10608     CONTRACTL_END;
10609     CrstHolder lh(&m_DelayedUnloadCrst);
10610
10611     for (AppDomain** ppDomain=&m_pDelayedUnloadList;(*ppDomain)!=NULL; )
10612     {
10613         if ((*ppDomain)->m_Stage==AppDomain::STAGE_HANDLETABLE_NOACCESS)
10614         {
10615             AppDomain* pAppDomain=*ppDomain;
10616             pAppDomain->SetStage(AppDomain::STAGE_CLEARED);
10617         }
10618         ppDomain=&((*ppDomain)->m_pNextInDelayedUnloadList);
10619     }
10620
10621     if (!m_UnloadIsAsync)
10622     {
10623         // For synchronous mode, we are now done with the list.
10624         m_pDelayedUnloadList = NULL;
10625     }
10626 }
10627
10628 void SystemDomain::ProcessDelayedUnloadDomains()
10629 {
10630     CONTRACTL
10631     {
10632         NOTHROW;
10633         GC_TRIGGERS;
10634         MODE_COOPERATIVE;
10635     }
10636     CONTRACTL_END;
10637
10638     int iGCRefPoint=GCHeapUtilities::GetGCHeap()->CollectionCount(GCHeapUtilities::GetGCHeap()->GetMaxGeneration());
10639     if (GCHeapUtilities::GetGCHeap()->IsConcurrentGCInProgress())
10640         iGCRefPoint--;
10641
10642     BOOL bAppDomainToCleanup = FALSE;
10643     LoaderAllocator * pAllocatorsToDelete = NULL;
10644
10645     {
10646         CrstHolder lh(&m_DelayedUnloadCrst);
10647
10648         for (AppDomain* pDomain=m_pDelayedUnloadList; pDomain!=NULL; pDomain=pDomain->m_pNextInDelayedUnloadList)
10649         {
10650             if (pDomain->m_Stage==AppDomain::STAGE_CLEARED)
10651             {
10652                 // Compare with 0 to handle overflows gracefully
10653                 if (0 < iGCRefPoint - pDomain->GetGCRefPoint())
10654                 {
10655                     bAppDomainToCleanup=TRUE;
10656                     pDomain->SetStage(AppDomain::STAGE_COLLECTED);
10657                 }
10658             }
10659         }
10660
10661         LoaderAllocator ** ppAllocator=&m_pDelayedUnloadListOfLoaderAllocators;
10662         while (*ppAllocator!= NULL)
10663         {
10664             LoaderAllocator * pAllocator = *ppAllocator;
10665             if (0 < iGCRefPoint - pAllocator->GetGCRefPoint())
10666             {
10667                 *ppAllocator = pAllocator->m_pLoaderAllocatorDestroyNext;
10668
10669                 pAllocator->m_pLoaderAllocatorDestroyNext = pAllocatorsToDelete;
10670                 pAllocatorsToDelete = pAllocator;
10671             }
10672             else
10673             {
10674                 ppAllocator = &pAllocator->m_pLoaderAllocatorDestroyNext;
10675             }
10676         }
10677     }
10678
10679     if (bAppDomainToCleanup)
10680         AppDomain::EnableADUnloadWorkerForCollectedADCleanup();
10681
10682     // Delete collected loader allocators on the finalizer thread. We cannot offload it to appdomain unload thread because of
10683     // there is not guaranteed to be one, and it is not that expensive operation anyway.
10684     while (pAllocatorsToDelete != NULL)
10685     {
10686         LoaderAllocator * pAllocator = pAllocatorsToDelete;
10687         pAllocatorsToDelete = pAllocator->m_pLoaderAllocatorDestroyNext;
10688         delete pAllocator;
10689     }
10690 }
10691
10692 #endif // CROSSGEN_COMPILE
10693
10694 AppDomainFromIDHolder::AppDomainFromIDHolder(ADID adId, BOOL bUnsafePoint, SyncType synctype)
10695 {
10696     WRAPPER_NO_CONTRACT;
10697     ANNOTATION_SPECIAL_HOLDER_CALLER_NEEDS_DYNAMIC_CONTRACT;
10698 #ifdef _DEBUG
10699     m_bAcquired=false;
10700     m_bChecked=false;
10701     m_type=synctype;
10702
10703 #endif
10704     Assign(adId, bUnsafePoint);
10705 }
10706
10707 AppDomainFromIDHolder::AppDomainFromIDHolder(SyncType synctype)
10708 {
10709     LIMITED_METHOD_CONTRACT;
10710     ANNOTATION_SPECIAL_HOLDER_CALLER_NEEDS_DYNAMIC_CONTRACT;
10711     m_pDomain=NULL;
10712 #ifdef _DEBUG
10713     m_bAcquired=false;
10714     m_bChecked=false;
10715     m_type=synctype;
10716 #endif
10717 }
10718
10719 #ifndef CROSSGEN_COMPILE
10720 void ADUnloadSink::ReportUnloadResult (HRESULT hr, OBJECTREF* pException)
10721 {
10722     CONTRACTL
10723     {
10724         NOTHROW;
10725         GC_NOTRIGGER;
10726         PRECONDITION(CheckPointer(this));
10727         PRECONDITION(m_UnloadCompleteEvent.IsValid());
10728     }
10729     CONTRACTL_END;
10730
10731     //pException is unused;
10732     m_UnloadResult=hr;
10733     m_UnloadCompleteEvent.Set();
10734 };
10735
10736 void ADUnloadSink::WaitUnloadCompletion()
10737 {
10738     CONTRACTL
10739     {
10740         THROWS;
10741         GC_TRIGGERS;
10742         PRECONDITION(CheckPointer(this));
10743         PRECONDITION(m_UnloadCompleteEvent.IsValid());
10744     }
10745     CONTRACTL_END;
10746
10747     CONTRACT_VIOLATION(FaultViolation);
10748     m_UnloadCompleteEvent.WaitEx(INFINITE, (WaitMode)(WaitMode_Alertable | WaitMode_ADUnload));
10749 };
10750
10751 ADUnloadSink* AppDomain::PrepareForWaitUnloadCompletion()
10752 {
10753     CONTRACTL
10754     {
10755         NOTHROW;
10756         GC_NOTRIGGER;
10757         PRECONDITION(SystemDomain::IsUnderDomainLock());
10758         FORBID_FAULT;
10759     }
10760     CONTRACTL_END;
10761
10762     ADUnloadSink* pADSink=GetADUnloadSink();
10763     PREFIX_ASSUME(pADSink!=NULL);
10764     if (m_Stage < AppDomain::STAGE_UNLOAD_REQUESTED) //we're first
10765     {
10766         pADSink->Reset();
10767         SetUnloadRequestThread(GetThread());
10768     }
10769     return pADSink;
10770 };
10771
10772 ADUnloadSink::ADUnloadSink()
10773 {
10774     CONTRACTL
10775     {
10776         CONSTRUCTOR_CHECK;
10777         THROWS;
10778         GC_NOTRIGGER;
10779         MODE_ANY;
10780         INJECT_FAULT(COMPlusThrowOM(););
10781     }
10782     CONTRACTL_END;
10783
10784     m_cRef=1;
10785     m_UnloadCompleteEvent.CreateManualEvent(FALSE);
10786     m_UnloadResult=S_OK;
10787 };
10788
10789 ADUnloadSink::~ADUnloadSink()
10790 {
10791     CONTRACTL
10792     {
10793         DESTRUCTOR_CHECK;
10794         NOTHROW;
10795         GC_NOTRIGGER;
10796         MODE_ANY;
10797     }
10798     CONTRACTL_END;
10799     m_UnloadCompleteEvent.CloseEvent();
10800
10801 };
10802
10803
10804 ULONG ADUnloadSink::AddRef()
10805 {
10806     LIMITED_METHOD_CONTRACT;
10807     return InterlockedIncrement(&m_cRef);
10808 };
10809
10810 ULONG ADUnloadSink::Release()
10811 {
10812     LIMITED_METHOD_CONTRACT;
10813     ULONG ulRef = InterlockedDecrement(&m_cRef);
10814     if (ulRef == 0)
10815     {
10816         delete this;
10817     }
10818     return ulRef;
10819 };
10820
10821 void ADUnloadSink::Reset()
10822 {
10823     LIMITED_METHOD_CONTRACT;
10824     m_UnloadResult=S_OK;
10825     m_UnloadCompleteEvent.Reset();
10826 }
10827
10828 ADUnloadSink* AppDomain::GetADUnloadSink()
10829 {
10830     LIMITED_METHOD_CONTRACT;
10831     _ASSERTE(SystemDomain::IsUnderDomainLock());
10832     if(m_ADUnloadSink)
10833         m_ADUnloadSink->AddRef();
10834     return m_ADUnloadSink;
10835 };
10836
10837 ADUnloadSink* AppDomain::GetADUnloadSinkForUnload()
10838 {
10839     // unload thread only. Doesn't need to have AD lock
10840     LIMITED_METHOD_CONTRACT;
10841     if(m_ADUnloadSink)
10842         m_ADUnloadSink->AddRef();
10843     return m_ADUnloadSink;
10844 }
10845 #endif // CROSSGEN_COMPILE
10846
10847 void AppDomain::EnumStaticGCRefs(promote_func* fn, ScanContext* sc)
10848 {
10849     CONTRACT_VOID
10850     {
10851         NOTHROW;
10852         GC_NOTRIGGER;
10853     }
10854     CONTRACT_END;
10855
10856     _ASSERTE(GCHeapUtilities::IsGCInProgress() &&
10857              GCHeapUtilities::IsServerHeap()   &&
10858              IsGCSpecialThread());
10859
10860     AppDomain::AssemblyIterator asmIterator = IterateAssembliesEx((AssemblyIterationFlags)(kIncludeLoaded | kIncludeExecution));
10861     CollectibleAssemblyHolder<DomainAssembly *> pDomainAssembly;
10862     while (asmIterator.Next(pDomainAssembly.This()))
10863     {
10864         // @TODO: Review when DomainAssemblies get added.
10865         _ASSERTE(pDomainAssembly != NULL);
10866         pDomainAssembly->EnumStaticGCRefs(fn, sc);
10867     }
10868
10869     RETURN;
10870 }
10871
10872 #endif // !DACCESS_COMPILE
10873
10874 //------------------------------------------------------------------------
10875 UINT32 BaseDomain::GetTypeID(PTR_MethodTable pMT) {
10876     CONTRACTL {
10877         THROWS;
10878         GC_TRIGGERS;
10879         PRECONDITION(pMT->GetDomain() == this);
10880     } CONTRACTL_END;
10881
10882     return m_typeIDMap.GetTypeID(pMT);
10883 }
10884
10885 //------------------------------------------------------------------------
10886 // Returns the ID of the type if found. If not found, returns INVALID_TYPE_ID
10887 UINT32 BaseDomain::LookupTypeID(PTR_MethodTable pMT)
10888 {
10889     CONTRACTL {
10890         NOTHROW;
10891         SO_TOLERANT;
10892         WRAPPER(GC_TRIGGERS);
10893         PRECONDITION(pMT->GetDomain() == this);
10894     } CONTRACTL_END;
10895
10896     return m_typeIDMap.LookupTypeID(pMT);
10897 }
10898
10899 //------------------------------------------------------------------------
10900 PTR_MethodTable BaseDomain::LookupType(UINT32 id) {
10901     CONTRACTL {
10902         NOTHROW;
10903         SO_TOLERANT;
10904         WRAPPER(GC_TRIGGERS);
10905         CONSISTENCY_CHECK(id != TYPE_ID_THIS_CLASS);
10906     } CONTRACTL_END;
10907
10908     PTR_MethodTable pMT = m_typeIDMap.LookupType(id);
10909     if (pMT == NULL && !IsSharedDomain()) {
10910         pMT = SharedDomain::GetDomain()->LookupType(id);
10911     }
10912
10913     CONSISTENCY_CHECK(CheckPointer(pMT));
10914     CONSISTENCY_CHECK(pMT->IsInterface());
10915     return pMT;
10916 }
10917
10918 //---------------------------------------------------------------------------------------
10919 //
10920 BOOL
10921 AppDomain::AssemblyIterator::Next(
10922     CollectibleAssemblyHolder<DomainAssembly *> * pDomainAssemblyHolder)
10923 {
10924     CONTRACTL {
10925         NOTHROW;
10926         WRAPPER(GC_TRIGGERS); // Triggers only in MODE_COOPERATIVE (by taking the lock)
10927         MODE_ANY;
10928     } CONTRACTL_END;
10929
10930     CrstHolder ch(m_pAppDomain->GetAssemblyListLock());
10931     return Next_Unlocked(pDomainAssemblyHolder);
10932 }
10933
10934 //---------------------------------------------------------------------------------------
10935 //
10936 // Note: Does not lock the assembly list, but locks collectible assemblies for adding references.
10937 //
10938 BOOL
10939 AppDomain::AssemblyIterator::Next_Unlocked(
10940     CollectibleAssemblyHolder<DomainAssembly *> * pDomainAssemblyHolder)
10941 {
10942     CONTRACTL {
10943         NOTHROW;
10944         GC_NOTRIGGER;
10945         MODE_ANY;
10946     } CONTRACTL_END;
10947
10948 #ifndef DACCESS_COMPILE
10949     _ASSERTE(m_pAppDomain->GetAssemblyListLock()->OwnedByCurrentThread());
10950 #endif
10951
10952     while (m_Iterator.Next())
10953     {
10954         // Get element from the list/iterator (without adding reference to the assembly)
10955         DomainAssembly * pDomainAssembly = dac_cast<PTR_DomainAssembly>(m_Iterator.GetElement());
10956         if (pDomainAssembly == NULL)
10957         {
10958             continue;
10959         }
10960
10961         if (pDomainAssembly->IsError())
10962         {
10963             if (m_assemblyIterationFlags & kIncludeFailedToLoad)
10964             {
10965                 *pDomainAssemblyHolder = pDomainAssembly;
10966                 return TRUE;
10967             }
10968             continue; // reject
10969         }
10970
10971         // First, reject DomainAssemblies whose load status is not to be included in
10972         // the enumeration
10973
10974         if (pDomainAssembly->IsAvailableToProfilers() &&
10975             (m_assemblyIterationFlags & kIncludeAvailableToProfilers))
10976         {
10977             // The assembly has reached the state at which we would notify profilers,
10978             // and we're supposed to include such assemblies in the enumeration. So
10979             // don't reject it (i.e., noop here, and don't bother with the rest of
10980             // the load status checks). Check for this first, since
10981             // kIncludeAvailableToProfilers contains some loaded AND loading
10982             // assemblies.
10983         }
10984         else if (pDomainAssembly->IsLoaded())
10985         {
10986             // A loaded assembly
10987             if (!(m_assemblyIterationFlags & kIncludeLoaded))
10988             {
10989                 continue; // reject
10990             }
10991         }
10992         else
10993         {
10994             // A loading assembly
10995             if (!(m_assemblyIterationFlags & kIncludeLoading))
10996             {
10997                 continue; // reject
10998             }
10999         }
11000
11001         // Next, reject DomainAssemblies whose execution / introspection status is
11002         // not to be included in the enumeration
11003
11004         if (pDomainAssembly->IsIntrospectionOnly())
11005         {
11006             // introspection assembly
11007             if (!(m_assemblyIterationFlags & kIncludeIntrospection))
11008             {
11009                 continue; // reject
11010             }
11011         }
11012         else
11013         {
11014             // execution assembly
11015             if (!(m_assemblyIterationFlags & kIncludeExecution))
11016             {
11017                 continue; // reject
11018             }
11019         }
11020
11021         // Next, reject collectible assemblies
11022         if (pDomainAssembly->IsCollectible())
11023         {
11024             if (m_assemblyIterationFlags & kExcludeCollectible)
11025             {
11026                 _ASSERTE(!(m_assemblyIterationFlags & kIncludeCollected));
11027                 continue; // reject
11028             }
11029
11030             // Un-tenured collectible assemblies should not be returned. (This can only happen in a brief
11031             // window during collectible assembly creation. No thread should need to have a pointer
11032             // to the just allocated DomainAssembly at this stage.)
11033             if (!pDomainAssembly->GetAssembly()->GetManifestModule()->IsTenured())
11034             {
11035                 continue; // reject
11036             }
11037
11038             if (pDomainAssembly->GetLoaderAllocator()->AddReferenceIfAlive())
11039             {   // The assembly is alive
11040
11041                 // Set the holder value (incl. increasing ref-count)
11042                 *pDomainAssemblyHolder = pDomainAssembly;
11043
11044                 // Now release the reference we took in the if-condition
11045                 pDomainAssembly->GetLoaderAllocator()->Release();
11046                 return TRUE;
11047             }
11048             // The assembly is not alive anymore (and we didn't increase its ref-count in the
11049             // if-condition)
11050
11051             if (!(m_assemblyIterationFlags & kIncludeCollected))
11052             {
11053                 continue; // reject
11054             }
11055             // Set the holder value to assembly with 0 ref-count without increasing the ref-count (won't
11056             // call Release either)
11057             pDomainAssemblyHolder->Assign(pDomainAssembly, FALSE);
11058             return TRUE;
11059         }
11060
11061         *pDomainAssemblyHolder = pDomainAssembly;
11062         return TRUE;
11063     }
11064
11065     *pDomainAssemblyHolder = NULL;
11066     return FALSE;
11067 } // AppDomain::AssemblyIterator::Next_Unlocked
11068
11069 #ifndef DACCESS_COMPILE
11070
11071 //---------------------------------------------------------------------------------------
11072 //
11073 // Can be called only from AppDomain shutdown code:AppDomain::ShutdownAssemblies.
11074 // Does not add-ref collectible assemblies (as the LoaderAllocator might not be reachable from the
11075 // DomainAssembly anymore).
11076 //
11077 BOOL
11078 AppDomain::AssemblyIterator::Next_UnsafeNoAddRef(
11079     DomainAssembly ** ppDomainAssembly)
11080 {
11081     CONTRACTL {
11082         NOTHROW;
11083         GC_TRIGGERS;
11084         MODE_ANY;
11085     } CONTRACTL_END;
11086
11087     // Make sure we are iterating all assemblies (see the only caller code:AppDomain::ShutdownAssemblies)
11088     _ASSERTE(m_assemblyIterationFlags ==
11089         (kIncludeLoaded | kIncludeLoading | kIncludeExecution | kIncludeIntrospection | kIncludeFailedToLoad | kIncludeCollected));
11090     // It also means that we do not exclude anything
11091     _ASSERTE((m_assemblyIterationFlags & kExcludeCollectible) == 0);
11092
11093     // We are on shutdown path, so lock shouldn't be neccessary, but all _Unlocked methods on AssemblyList
11094     // have asserts that the lock is held, so why not to take it ...
11095     CrstHolder ch(m_pAppDomain->GetAssemblyListLock());
11096
11097     while (m_Iterator.Next())
11098     {
11099         // Get element from the list/iterator (without adding reference to the assembly)
11100         *ppDomainAssembly = dac_cast<PTR_DomainAssembly>(m_Iterator.GetElement());
11101         if (*ppDomainAssembly == NULL)
11102         {
11103             continue;
11104         }
11105
11106         return TRUE;
11107     }
11108
11109     *ppDomainAssembly = NULL;
11110     return FALSE;
11111 } // AppDomain::AssemblyIterator::Next_UnsafeNoAddRef
11112
11113
11114 //---------------------------------------------------------------------------------------
11115 //
11116 BOOL AppDomain::IsImageFromTrustedPath(PEImage* pPEImage)
11117 {
11118     CONTRACTL
11119     {
11120         MODE_ANY;
11121         GC_TRIGGERS;
11122         THROWS;
11123         PRECONDITION(CheckPointer(pPEImage));
11124     }
11125     CONTRACTL_END;
11126
11127     const SString &sImagePath = pPEImage->GetPath();
11128
11129     return !sImagePath.IsEmpty();
11130 }
11131
11132 #endif //!DACCESS_COMPILE
11133
11134 #if !defined(DACCESS_COMPILE) && !defined(CROSSGEN_COMPILE)
11135
11136 // Returns a BOOL indicating if the binding model has been locked for the AppDomain
11137 BOOL AppDomain::IsBindingModelLocked()
11138 {
11139     CONTRACTL
11140     {
11141         NOTHROW;
11142         GC_NOTRIGGER;
11143         MODE_ANY;
11144     }
11145     CONTRACTL_END;
11146
11147     return m_fIsBindingModelLocked.Load();
11148 }
11149
11150 // Marks the binding model locked for AppDomain
11151 BOOL AppDomain::LockBindingModel()
11152 {
11153     LIMITED_METHOD_CONTRACT;
11154
11155     BOOL fDidWeLockBindingModel = FALSE;
11156
11157     if (InterlockedCompareExchangeT<BOOL>(&m_fIsBindingModelLocked, TRUE, FALSE) == FALSE)
11158     {
11159         fDidWeLockBindingModel = TRUE;
11160     }
11161
11162     return fDidWeLockBindingModel;
11163 }
11164
11165 BOOL AppDomain::IsHostAssemblyResolverInUse()
11166 {
11167     LIMITED_METHOD_CONTRACT;
11168
11169     return (GetFusionContext() != GetTPABinderContext());
11170 }
11171
11172 // Helper used by the assembly binder to check if the specified AppDomain can use apppath assembly resolver
11173 BOOL RuntimeCanUseAppPathAssemblyResolver(DWORD adid)
11174 {
11175     CONTRACTL
11176     {
11177         NOTHROW; // Cannot throw since it is invoked by the Binder that expects to get a hresult
11178         GC_TRIGGERS;
11179         MODE_ANY;
11180     }
11181     CONTRACTL_END;
11182
11183     ADID id(adid);
11184
11185     // We need to be in COOP mode to get the AppDomain*
11186     GCX_COOP();
11187
11188     AppDomain *pTargetDomain = SystemDomain::GetAppDomainFromId(id, ADV_CURRENTAD);
11189     _ASSERTE(pTargetDomain != NULL);
11190
11191     pTargetDomain->LockBindingModel();
11192
11193     return !pTargetDomain->IsHostAssemblyResolverInUse();
11194 }
11195
11196 // Returns S_OK if the assembly was successfully loaded
11197 HRESULT RuntimeInvokeHostAssemblyResolver(INT_PTR pManagedAssemblyLoadContextToBindWithin, IAssemblyName *pIAssemblyName, CLRPrivBinderCoreCLR *pTPABinder, BINDER_SPACE::AssemblyName *pAssemblyName, ICLRPrivAssembly **ppLoadedAssembly)
11198 {
11199     CONTRACTL
11200     {
11201         THROWS;
11202         GC_TRIGGERS;
11203         MODE_ANY;
11204         PRECONDITION(ppLoadedAssembly != NULL);
11205     }
11206     CONTRACTL_END;
11207
11208     HRESULT hr = E_FAIL;
11209
11210     // DevDiv #933506: Exceptions thrown during AssemblyLoadContext.Load should propagate
11211     // EX_TRY
11212     {
11213         // Switch to COOP mode since we are going to work with managed references
11214         GCX_COOP();
11215
11216         struct
11217         {
11218             ASSEMBLYNAMEREF oRefAssemblyName;
11219             ASSEMBLYREF oRefLoadedAssembly;
11220         } _gcRefs;
11221
11222         ZeroMemory(&_gcRefs, sizeof(_gcRefs));
11223
11224         GCPROTECT_BEGIN(_gcRefs);
11225
11226         ICLRPrivAssembly *pAssemblyBindingContext = NULL;
11227
11228         bool fInvokedForTPABinder = (pTPABinder == NULL)?true:false;
11229
11230         // Prepare to invoke System.Runtime.Loader.AssemblyLoadContext.Resolve method.
11231         //
11232         // First, initialize an assembly spec for the requested assembly
11233         //
11234         AssemblySpec spec;
11235         hr = spec.Init(pIAssemblyName);
11236         if (SUCCEEDED(hr))
11237         {
11238             bool fResolvedAssembly = false;
11239             bool fResolvedAssemblyViaTPALoadContext = false;
11240
11241             // Allocate an AssemblyName managed object
11242             _gcRefs.oRefAssemblyName = (ASSEMBLYNAMEREF) AllocateObject(MscorlibBinder::GetClass(CLASS__ASSEMBLY_NAME));
11243
11244             // Initialize the AssemblyName object from the AssemblySpec
11245             spec.AssemblyNameInit(&_gcRefs.oRefAssemblyName, NULL);
11246
11247             if (!fInvokedForTPABinder)
11248             {
11249                 // Step 2 (of CLRPrivBinderAssemblyLoadContext::BindUsingAssemblyName) - Invoke Load method
11250                 // This is not invoked for TPA Binder since it always returns NULL.
11251
11252                 // Finally, setup arguments for invocation
11253                 BinderMethodID idHAR_Resolve = METHOD__ASSEMBLYLOADCONTEXT__RESOLVE;
11254                 MethodDescCallSite methLoadAssembly(idHAR_Resolve);
11255
11256                 // Setup the arguments for the call
11257                 ARG_SLOT args[2] =
11258                 {
11259                     PtrToArgSlot(pManagedAssemblyLoadContextToBindWithin), // IntPtr for managed assembly load context instance
11260                     ObjToArgSlot(_gcRefs.oRefAssemblyName), // AssemblyName instance
11261                 };
11262
11263                 // Make the call
11264                 _gcRefs.oRefLoadedAssembly = (ASSEMBLYREF) methLoadAssembly.Call_RetOBJECTREF(args);
11265                 if (_gcRefs.oRefLoadedAssembly != NULL)
11266                 {
11267                     fResolvedAssembly = true;
11268                 }
11269
11270                 // Step 3 (of CLRPrivBinderAssemblyLoadContext::BindUsingAssemblyName)
11271                 if (!fResolvedAssembly)
11272                 {
11273                     // If we could not resolve the assembly using Load method, then attempt fallback with TPA Binder.
11274                     // Since TPA binder cannot fallback to itself, this fallback does not happen for binds within TPA binder.
11275                     //
11276                     // Switch to pre-emp mode before calling into the binder
11277                     GCX_PREEMP();
11278                     ICLRPrivAssembly *pCoreCLRFoundAssembly = NULL;
11279                     hr = pTPABinder->BindAssemblyByName(pIAssemblyName, &pCoreCLRFoundAssembly);
11280                     if (SUCCEEDED(hr))
11281                     {
11282                         pAssemblyBindingContext = pCoreCLRFoundAssembly;
11283                         fResolvedAssembly = true;
11284                         fResolvedAssemblyViaTPALoadContext = true;
11285                     }
11286                 }
11287             }
11288
11289             if (!fResolvedAssembly)
11290             {
11291                 // Step 4 (of CLRPrivBinderAssemblyLoadContext::BindUsingAssemblyName)
11292                 //
11293                 // If we couldnt resolve the assembly using TPA LoadContext as well, then
11294                 // attempt to resolve it using the Resolving event.
11295                 // Finally, setup arguments for invocation
11296                 BinderMethodID idHAR_ResolveUsingEvent = METHOD__ASSEMBLYLOADCONTEXT__RESOLVEUSINGEVENT;
11297                 MethodDescCallSite methLoadAssembly(idHAR_ResolveUsingEvent);
11298
11299                 // Setup the arguments for the call
11300                 ARG_SLOT args[2] =
11301                 {
11302                     PtrToArgSlot(pManagedAssemblyLoadContextToBindWithin), // IntPtr for managed assembly load context instance
11303                     ObjToArgSlot(_gcRefs.oRefAssemblyName), // AssemblyName instance
11304                 };
11305
11306                 // Make the call
11307                 _gcRefs.oRefLoadedAssembly = (ASSEMBLYREF) methLoadAssembly.Call_RetOBJECTREF(args);
11308                 if (_gcRefs.oRefLoadedAssembly != NULL)
11309                 {
11310                     // Set the flag indicating we found the assembly
11311                     fResolvedAssembly = true;
11312                 }
11313             }
11314
11315             if (fResolvedAssembly && !fResolvedAssemblyViaTPALoadContext)
11316             {
11317                 // If we are here, assembly was successfully resolved via Load or Resolving events.
11318                 _ASSERTE(_gcRefs.oRefLoadedAssembly != NULL);
11319
11320                 // We were able to get the assembly loaded. Now, get its name since the host could have
11321                 // performed the resolution using an assembly with different name.
11322                 DomainAssembly *pDomainAssembly = _gcRefs.oRefLoadedAssembly->GetDomainAssembly();
11323                 PEAssembly *pLoadedPEAssembly = NULL;
11324                 bool fFailLoad = false;
11325                 if (!pDomainAssembly)
11326                 {
11327                     // Reflection emitted assemblies will not have a domain assembly.
11328                     fFailLoad = true;
11329                 }
11330                 else
11331                 {
11332                     pLoadedPEAssembly = pDomainAssembly->GetFile();
11333                     if (pLoadedPEAssembly->HasHostAssembly() != true)
11334                     {
11335                         // Reflection emitted assemblies will not have a domain assembly.
11336                         fFailLoad = true;
11337                     }
11338                 }
11339
11340                 // The loaded assembly's ICLRPrivAssembly* is saved as HostAssembly in PEAssembly
11341                 if (fFailLoad)
11342                 {
11343                     SString name;
11344                     spec.GetFileOrDisplayName(0, name);
11345                     COMPlusThrowHR(COR_E_INVALIDOPERATION, IDS_HOST_ASSEMBLY_RESOLVER_DYNAMICALLY_EMITTED_ASSEMBLIES_UNSUPPORTED, name);
11346                 }
11347
11348                 // Is the assembly already bound using a binding context that will be incompatible?
11349                 // An example is attempting to consume an assembly bound to WinRT binder.
11350                 pAssemblyBindingContext = pLoadedPEAssembly->GetHostAssembly();
11351             }
11352
11353 #ifdef FEATURE_COMINTEROP
11354             if (AreSameBinderInstance(pAssemblyBindingContext, GetAppDomain()->GetWinRtBinder()))
11355             {
11356                 // It is invalid to return an assembly bound to an incompatible binder
11357                 *ppLoadedAssembly = NULL;
11358                 SString name;
11359                 spec.GetFileOrDisplayName(0, name);
11360                 COMPlusThrowHR(COR_E_INVALIDOPERATION, IDS_HOST_ASSEMBLY_RESOLVER_INCOMPATIBLE_BINDING_CONTEXT, name);
11361             }
11362 #endif // FEATURE_COMINTEROP
11363
11364             // Get the ICLRPrivAssembly reference to return back to.
11365             *ppLoadedAssembly = clr::SafeAddRef(pAssemblyBindingContext);
11366             hr = S_OK;
11367         }
11368
11369         GCPROTECT_END();
11370     }
11371     // EX_CATCH_HRESULT(hr);
11372
11373     return hr;
11374
11375 }
11376 #endif // !defined(DACCESS_COMPILE) && !defined(CROSSGEN_COMPILE)
11377
11378 //approximate size of loader data
11379 //maintained for each assembly
11380 #define APPROX_LOADER_DATA_PER_ASSEMBLY 8196
11381
11382 size_t AppDomain::EstimateSize()
11383 {
11384     CONTRACTL
11385     {
11386         NOTHROW;
11387         GC_TRIGGERS;
11388         MODE_ANY;
11389     }
11390     CONTRACTL_END;
11391
11392     size_t retval = sizeof(AppDomain);
11393     retval += GetLoaderAllocator()->EstimateSize();
11394     //very rough estimate
11395     retval += GetAssemblyCount() * APPROX_LOADER_DATA_PER_ASSEMBLY;
11396     return retval;
11397 }
11398
11399 #ifdef DACCESS_COMPILE
11400
11401 void
11402 DomainLocalModule::EnumMemoryRegions(CLRDataEnumMemoryFlags flags)
11403 {
11404     SUPPORTS_DAC;
11405
11406     // Enumerate the DomainLocalModule itself. DLMs are allocated to be larger than
11407     // sizeof(DomainLocalModule) to make room for ClassInit flags and non-GC statics.
11408     // "DAC_ENUM_DTHIS()" probably does not account for this, so we might not enumerate
11409     // all of the ClassInit flags and non-GC statics.
11410     // sizeof(DomainLocalModule) == 0x28
11411     DAC_ENUM_DTHIS();
11412
11413     if (m_pDomainFile.IsValid())
11414     {
11415         m_pDomainFile->EnumMemoryRegions(flags);
11416     }
11417
11418     if (m_pDynamicClassTable.Load().IsValid())
11419     {
11420         DacEnumMemoryRegion(dac_cast<TADDR>(m_pDynamicClassTable.Load()),
11421                             m_aDynamicEntries * sizeof(DynamicClassInfo));
11422
11423         for (SIZE_T i = 0; i < m_aDynamicEntries; i++)
11424         {
11425             PTR_DynamicEntry entry = dac_cast<PTR_DynamicEntry>(m_pDynamicClassTable[i].m_pDynamicEntry.Load());
11426             if (entry.IsValid())
11427             {
11428                 // sizeof(DomainLocalModule::DynamicEntry) == 8
11429                 entry.EnumMem();
11430             }
11431         }
11432     }
11433 }
11434
11435 void
11436 DomainLocalBlock::EnumMemoryRegions(CLRDataEnumMemoryFlags flags)
11437 {
11438     SUPPORTS_DAC;
11439     // Block is contained in AppDomain, don't enum this.
11440
11441     if (m_pModuleSlots.IsValid())
11442     {
11443         DacEnumMemoryRegion(dac_cast<TADDR>(m_pModuleSlots),
11444                             m_aModuleIndices * sizeof(TADDR));
11445
11446         for (SIZE_T i = 0; i < m_aModuleIndices; i++)
11447         {
11448             PTR_DomainLocalModule domMod = m_pModuleSlots[i];
11449             if (domMod.IsValid())
11450             {
11451                 domMod->EnumMemoryRegions(flags);
11452             }
11453         }
11454     }
11455 }
11456
11457 void
11458 BaseDomain::EnumMemoryRegions(CLRDataEnumMemoryFlags flags,
11459                               bool enumThis)
11460 {
11461     SUPPORTS_DAC;
11462     if (enumThis)
11463     {
11464         // This is wrong.  Don't do it.
11465         // BaseDomain cannot be instantiated.
11466         // The only thing this code can hope to accomplish is to potentially break
11467         // memory enumeration walking through the derived class if we
11468         // explicitly call the base class enum first.
11469 //        DAC_ENUM_VTHIS();
11470     }
11471
11472     EMEM_OUT(("MEM: %p BaseDomain\n", dac_cast<TADDR>(this)));
11473 }
11474
11475 void
11476 AppDomain::EnumMemoryRegions(CLRDataEnumMemoryFlags flags,
11477                              bool enumThis)
11478 {
11479     SUPPORTS_DAC;
11480
11481     if (enumThis)
11482     {
11483         //sizeof(AppDomain) == 0xeb0
11484         DAC_ENUM_VTHIS();
11485     }
11486     BaseDomain::EnumMemoryRegions(flags, false);
11487
11488     // We don't need AppDomain name in triage dumps.
11489     if (flags != CLRDATA_ENUM_MEM_TRIAGE)
11490     {
11491         m_friendlyName.EnumMemoryRegions(flags);
11492     }
11493
11494     m_Assemblies.EnumMemoryRegions(flags);
11495     AssemblyIterator assem = IterateAssembliesEx((AssemblyIterationFlags)(kIncludeLoaded | kIncludeExecution | kIncludeIntrospection));
11496     CollectibleAssemblyHolder<DomainAssembly *> pDomainAssembly;
11497
11498     while (assem.Next(pDomainAssembly.This()))
11499     {
11500         pDomainAssembly->EnumMemoryRegions(flags);
11501     }
11502
11503     m_sDomainLocalBlock.EnumMemoryRegions(flags);
11504
11505     m_LoaderAllocator.EnumMemoryRegions(flags);
11506 }
11507
11508 void
11509 SystemDomain::EnumMemoryRegions(CLRDataEnumMemoryFlags flags,
11510                                 bool enumThis)
11511 {
11512     SUPPORTS_DAC;
11513     if (enumThis)
11514     {
11515         DAC_ENUM_VTHIS();
11516     }
11517     BaseDomain::EnumMemoryRegions(flags, false);
11518
11519     if (m_pSystemFile.IsValid())
11520     {
11521         m_pSystemFile->EnumMemoryRegions(flags);
11522     }
11523     if (m_pSystemAssembly.IsValid())
11524     {
11525         m_pSystemAssembly->EnumMemoryRegions(flags);
11526     }
11527     if (m_pDefaultDomain.IsValid())
11528     {
11529         m_pDefaultDomain->EnumMemoryRegions(flags, true);
11530     }
11531
11532     m_appDomainIndexList.EnumMem();
11533     (&m_appDomainIndexList)->EnumMemoryRegions(flags);
11534 }
11535
11536 void
11537 SharedDomain::EnumMemoryRegions(CLRDataEnumMemoryFlags flags,
11538                                 bool enumThis)
11539 {
11540     SUPPORTS_DAC;
11541     if (enumThis)
11542     {
11543         DAC_ENUM_VTHIS();
11544     }
11545     BaseDomain::EnumMemoryRegions(flags, false);
11546 #ifdef FEATURE_LOADER_OPTIMIZATION
11547     m_assemblyMap.EnumMemoryRegions(flags);
11548     SharedAssemblyIterator assem;
11549     while (assem.Next())
11550     {
11551         assem.GetAssembly()->EnumMemoryRegions(flags);
11552     }
11553 #endif
11554 }
11555
11556 #endif //DACCESS_COMPILE
11557
11558
11559 PTR_LoaderAllocator SystemDomain::GetGlobalLoaderAllocator()
11560 {
11561     return PTR_LoaderAllocator(PTR_HOST_MEMBER_TADDR(SystemDomain,System(),m_GlobalAllocator));
11562 }
11563
11564 #ifdef FEATURE_APPDOMAIN_RESOURCE_MONITORING
11565
11566 #ifndef CROSSGEN_COMPILE
11567 // Return the total processor time (user and kernel) used by threads executing in this AppDomain so far. The
11568 // result is in 100ns units.
11569 ULONGLONG AppDomain::QueryProcessorUsage()
11570 {
11571     CONTRACTL
11572     {
11573         NOTHROW;
11574         GC_TRIGGERS;
11575         MODE_ANY;
11576     }
11577     CONTRACTL_END;
11578
11579 #ifndef DACCESS_COMPILE
11580     Thread *pThread = NULL;
11581
11582     // Need to update our accumulated processor time count with current values from each thread that is
11583     // currently executing in this domain.
11584
11585     // Take the thread store lock while we enumerate threads.
11586     ThreadStoreLockHolder tsl;
11587     while ((pThread = ThreadStore::GetThreadList(pThread)) != NULL)
11588     {
11589         // Skip unstarted and dead threads and those that are currently executing in a different AppDomain.
11590         if (pThread->IsUnstarted() || pThread->IsDead() || pThread->GetDomain(INDEBUG(TRUE)) != this)
11591             continue;
11592
11593         // Add the amount of time spent by the thread in the AppDomain since the last time we asked (calling
11594         // Thread::QueryThreadProcessorUsage() will reset the thread's counter).
11595         UpdateProcessorUsage(pThread->QueryThreadProcessorUsage());
11596     }
11597 #endif // !DACCESS_COMPILE
11598
11599     // Return the updated total.
11600     return m_ullTotalProcessorUsage;
11601 }
11602
11603 // Add to the current count of processor time used by threads within this AppDomain. This API is called by
11604 // threads transitioning between AppDomains.
11605 void AppDomain::UpdateProcessorUsage(ULONGLONG ullAdditionalUsage)
11606 {
11607     LIMITED_METHOD_CONTRACT;
11608
11609     // Need to be careful to synchronize here, multiple threads could be racing to update this count.
11610     ULONGLONG ullOldValue;
11611     ULONGLONG ullNewValue;
11612     do
11613     {
11614         ullOldValue = m_ullTotalProcessorUsage;
11615         ullNewValue = ullOldValue + ullAdditionalUsage;
11616     } while (InterlockedCompareExchange64((LONGLONG*)&m_ullTotalProcessorUsage,
11617                                           (LONGLONG)ullNewValue,
11618                                           (LONGLONG)ullOldValue) != (LONGLONG)ullOldValue);
11619 }
11620 #endif // CROSSGEN_COMPILE
11621
11622 #endif // FEATURE_APPDOMAIN_RESOURCE_MONITORING
11623
11624 #if defined(FEATURE_TYPEEQUIVALENCE)
11625
11626 #ifndef DACCESS_COMPILE
11627 TypeEquivalenceHashTable * AppDomain::GetTypeEquivalenceCache()
11628 {
11629     CONTRACTL
11630     {
11631         THROWS;
11632         GC_TRIGGERS;
11633         INJECT_FAULT(COMPlusThrowOM());
11634         MODE_ANY;
11635     }
11636     CONTRACTL_END;
11637
11638     // Take the critical section all of the time in debug builds to ensure that it is safe to take
11639     // the critical section in the unusual times when it may actually be needed in retail builds
11640 #ifdef _DEBUG
11641     CrstHolder ch(&m_TypeEquivalenceCrst);
11642 #endif
11643
11644     if (m_pTypeEquivalenceTable.Load() == NULL)
11645     {
11646 #ifndef _DEBUG
11647         CrstHolder ch(&m_TypeEquivalenceCrst);
11648 #endif
11649         if (m_pTypeEquivalenceTable.Load() == NULL)
11650         {
11651             m_pTypeEquivalenceTable = TypeEquivalenceHashTable::Create(this, 12, &m_TypeEquivalenceCrst);
11652         }
11653     }
11654     return m_pTypeEquivalenceTable;
11655 }
11656 #endif //!DACCESS_COMPILE
11657
11658 #endif //FEATURE_TYPEEQUIVALENCE
11659
11660 #if !defined(DACCESS_COMPILE)
11661
11662 //---------------------------------------------------------------------------------------------------------------------
11663 void AppDomain::PublishHostedAssembly(
11664     DomainAssembly * pDomainAssembly)
11665 {
11666     CONTRACTL
11667     {
11668         THROWS;
11669         GC_NOTRIGGER;
11670         MODE_ANY;
11671     }
11672     CONTRACTL_END
11673
11674     if (pDomainAssembly->GetFile()->HasHostAssembly())
11675     {
11676         // We have to serialize all Add operations
11677         CrstHolder lockAdd(&m_crstHostAssemblyMapAdd);
11678         _ASSERTE(m_hostAssemblyMap.Lookup(pDomainAssembly->GetFile()->GetHostAssembly()) == nullptr);
11679
11680         // Wrapper for m_hostAssemblyMap.Add that avoids call out into host
11681         HostAssemblyMap::AddPhases addCall;
11682
11683         // 1. Preallocate one element
11684         addCall.PreallocateForAdd(&m_hostAssemblyMap);
11685         {
11686             // 2. Take the reader lock which can be taken during stack walking
11687             // We cannot call out into host from ForbidSuspend region (i.e. no allocations/deallocations)
11688             ForbidSuspendThreadHolder suspend;
11689             {
11690                 CrstHolder lock(&m_crstHostAssemblyMap);
11691                 // 3. Add the element to the hash table (no call out into host)
11692                 addCall.Add(pDomainAssembly);
11693             }
11694         }
11695         // 4. Cleanup the old memory (if any)
11696         addCall.DeleteOldTable();
11697     }
11698     else
11699     {
11700     }
11701 }
11702
11703 //---------------------------------------------------------------------------------------------------------------------
11704 void AppDomain::UpdatePublishHostedAssembly(
11705     DomainAssembly * pAssembly,
11706     PTR_PEFile       pFile)
11707 {
11708     CONTRACTL
11709     {
11710         THROWS;
11711         GC_NOTRIGGER;
11712         MODE_ANY;
11713         CAN_TAKE_LOCK;
11714     }
11715     CONTRACTL_END
11716
11717     if (pAssembly->GetFile()->HasHostAssembly())
11718     {
11719         // We have to serialize all Add operations
11720         CrstHolder lockAdd(&m_crstHostAssemblyMapAdd);
11721         {
11722             // Wrapper for m_hostAssemblyMap.Add that avoids call out into host
11723             OriginalFileHostAssemblyMap::AddPhases addCall;
11724             bool fAddOrigFile = false;
11725
11726             // For cases where the pefile is being updated
11727             // 1. Preallocate one element
11728             if (pFile != pAssembly->GetFile())
11729             {
11730                 addCall.PreallocateForAdd(&m_hostAssemblyMapForOrigFile);
11731                 fAddOrigFile = true;
11732             }
11733
11734             {
11735                 // We cannot call out into host from ForbidSuspend region (i.e. no allocations/deallocations)
11736                 ForbidSuspendThreadHolder suspend;
11737                 {
11738                     CrstHolder lock(&m_crstHostAssemblyMap);
11739
11740                     // Remove from hash table.
11741                     _ASSERTE(m_hostAssemblyMap.Lookup(pAssembly->GetFile()->GetHostAssembly()) != nullptr);
11742                     m_hostAssemblyMap.Remove(pAssembly->GetFile()->GetHostAssembly());
11743
11744                     // Update PEFile on DomainAssembly. (This may cause the key for the hash to change, which is why we need this function)
11745                     pAssembly->UpdatePEFileWorker(pFile);
11746
11747                     _ASSERTE(fAddOrigFile == (pAssembly->GetOriginalFile() != pAssembly->GetFile()));
11748                     if (fAddOrigFile)
11749                     {
11750                         // Add to the orig file hash table if we might be in a case where we've cached the original pefile and not the final pe file (for use during GetAssemblyIfLoaded)
11751                         addCall.Add(pAssembly);
11752                     }
11753
11754                     // Add back to the hashtable (the call to Remove above guarantees that we will not call into host for table reallocation)
11755                     _ASSERTE(m_hostAssemblyMap.Lookup(pAssembly->GetFile()->GetHostAssembly()) == nullptr);
11756                     m_hostAssemblyMap.Add(pAssembly);
11757                 }
11758             }
11759
11760             // 4. Cleanup the old memory (if any)
11761             if (fAddOrigFile)
11762                 addCall.DeleteOldTable();
11763         }
11764     }
11765     else
11766     {
11767
11768         pAssembly->UpdatePEFileWorker(pFile);
11769     }
11770 }
11771
11772 //---------------------------------------------------------------------------------------------------------------------
11773 void AppDomain::UnPublishHostedAssembly(
11774     DomainAssembly * pAssembly)
11775 {
11776     CONTRACTL
11777     {
11778         NOTHROW;
11779         GC_NOTRIGGER;
11780         MODE_ANY;
11781         CAN_TAKE_LOCK;
11782     }
11783     CONTRACTL_END
11784
11785     if (pAssembly->GetFile()->HasHostAssembly())
11786     {
11787         ForbidSuspendThreadHolder suspend;
11788         {
11789             CrstHolder lock(&m_crstHostAssemblyMap);
11790             _ASSERTE(m_hostAssemblyMap.Lookup(pAssembly->GetFile()->GetHostAssembly()) != nullptr);
11791             m_hostAssemblyMap.Remove(pAssembly->GetFile()->GetHostAssembly());
11792
11793             // We also have an entry in m_hostAssemblyMapForOrigFile. Handle that case.
11794             if (pAssembly->GetOriginalFile() != pAssembly->GetFile())
11795             {
11796                 m_hostAssemblyMapForOrigFile.Remove(pAssembly->GetOriginalFile()->GetHostAssembly());
11797             }
11798         }
11799     }
11800     else
11801     {
11802         // In AppX processes, all PEAssemblies that are reach this stage should have host binders.
11803         _ASSERTE(!AppX::IsAppXProcess());
11804     }
11805 }
11806
11807 #if defined(FEATURE_COMINTEROP)
11808 HRESULT AppDomain::SetWinrtApplicationContext(SString &appLocalWinMD)
11809 {
11810     STANDARD_VM_CONTRACT;
11811
11812     _ASSERTE(WinRTSupported());
11813     _ASSERTE(m_pWinRtBinder != nullptr);
11814
11815     _ASSERTE(GetTPABinderContext() != NULL);
11816     BINDER_SPACE::ApplicationContext *pApplicationContext = GetTPABinderContext()->GetAppContext();
11817     _ASSERTE(pApplicationContext != NULL);
11818
11819     return m_pWinRtBinder->SetApplicationContext(pApplicationContext, appLocalWinMD);
11820 }
11821
11822 #endif // FEATURE_COMINTEROP
11823
11824 #endif //!DACCESS_COMPILE
11825
11826 //---------------------------------------------------------------------------------------------------------------------
11827 PTR_DomainAssembly AppDomain::FindAssembly(PTR_ICLRPrivAssembly pHostAssembly)
11828 {
11829     CONTRACTL
11830     {
11831         NOTHROW;
11832         GC_NOTRIGGER;
11833         MODE_ANY;
11834         SUPPORTS_DAC;
11835     }
11836     CONTRACTL_END
11837
11838     if (pHostAssembly == nullptr)
11839         return NULL;
11840
11841     {
11842         ForbidSuspendThreadHolder suspend;
11843         {
11844             CrstHolder lock(&m_crstHostAssemblyMap);
11845             PTR_DomainAssembly returnValue = m_hostAssemblyMap.Lookup(pHostAssembly);
11846             if (returnValue == NULL)
11847             {
11848                 // If not found in the m_hostAssemblyMap, look in the m_hostAssemblyMapForOrigFile
11849                 // This is necessary as it may happen during in a second AppDomain that the PEFile
11850                 // first discovered in the AppDomain may not be used by the DomainFile, but the CLRPrivBinderFusion
11851                 // will in some cases find the pHostAssembly associated with this no longer used PEFile
11852                 // instead of the PEFile that was finally decided upon.
11853                 returnValue = m_hostAssemblyMapForOrigFile.Lookup(pHostAssembly);
11854             }
11855
11856             return returnValue;
11857         }
11858     }
11859 }
11860
11861 #if !defined(DACCESS_COMPILE) && defined(FEATURE_NATIVE_IMAGE_GENERATION)
11862
11863 void ZapperSetBindingPaths(ICorCompilationDomain *pDomain, SString &trustedPlatformAssemblies, SString &platformResourceRoots, SString &appPaths, SString &appNiPaths)
11864 {
11865     CLRPrivBinderCoreCLR *pBinder = static_cast<CLRPrivBinderCoreCLR*>(((CompilationDomain *)pDomain)->GetFusionContext());
11866     _ASSERTE(pBinder != NULL);
11867     pBinder->SetupBindingPaths(trustedPlatformAssemblies, platformResourceRoots, appPaths, appNiPaths);
11868 #ifdef FEATURE_COMINTEROP
11869     SString emptString;
11870     ((CompilationDomain*)pDomain)->SetWinrtApplicationContext(emptString);
11871 #endif
11872 }
11873
11874 #endif