src/v8/src/counters.h

   1 // Copyright 2012 the V8 project authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef V8_COUNTERS_H_
   6 #define V8_COUNTERS_H_
   7
   8 #include "include/v8.h"
   9 #include "src/allocation.h"
  10 #include "src/globals.h"
  11 #include "src/objects.h"
  12 #include "src/platform/elapsed-timer.h"
  13
  14 namespace v8 {
  15 namespace internal {
  16
  17 // StatsCounters is an interface for plugging into external
  18 // counters for monitoring.  Counters can be looked up and
  19 // manipulated by name.
  20
  21 class StatsTable {
  22  public:
  23   // Register an application-defined function where
  24   // counters can be looked up.
  25   void SetCounterFunction(CounterLookupCallback f) {
  26     lookup_function_ = f;
  27   }
  28
  29   // Register an application-defined function to create
  30   // a histogram for passing to the AddHistogramSample function
  31   void SetCreateHistogramFunction(CreateHistogramCallback f) {
  32     create_histogram_function_ = f;
  33   }
  34
  35   // Register an application-defined function to add a sample
  36   // to a histogram created with CreateHistogram function
  37   void SetAddHistogramSampleFunction(AddHistogramSampleCallback f) {
  38     add_histogram_sample_function_ = f;
  39   }
  40
  41   bool HasCounterFunction() const {
  42     return lookup_function_ != NULL;
  43   }
  44
  45   // Lookup the location of a counter by name.  If the lookup
  46   // is successful, returns a non-NULL pointer for writing the
  47   // value of the counter.  Each thread calling this function
  48   // may receive a different location to store it's counter.
  49   // The return value must not be cached and re-used across
  50   // threads, although a single thread is free to cache it.
  51   int* FindLocation(const char* name) {
  52     if (!lookup_function_) return NULL;
  53     return lookup_function_(name);
  54   }
  55
  56   // Create a histogram by name. If the create is successful,
  57   // returns a non-NULL pointer for use with AddHistogramSample
  58   // function. min and max define the expected minimum and maximum
  59   // sample values. buckets is the maximum number of buckets
  60   // that the samples will be grouped into.
  61   void* CreateHistogram(const char* name,
  62                         int min,
  63                         int max,
  64                         size_t buckets) {
  65     if (!create_histogram_function_) return NULL;
  66     return create_histogram_function_(name, min, max, buckets);
  67   }
  68
  69   // Add a sample to a histogram created with the CreateHistogram
  70   // function.
  71   void AddHistogramSample(void* histogram, int sample) {
  72     if (!add_histogram_sample_function_) return;
  73     return add_histogram_sample_function_(histogram, sample);
  74   }
  75
  76  private:
  77   StatsTable();
  78
  79   CounterLookupCallback lookup_function_;
  80   CreateHistogramCallback create_histogram_function_;
  81   AddHistogramSampleCallback add_histogram_sample_function_;
  82
  83   friend class Isolate;
  84
  85   DISALLOW_COPY_AND_ASSIGN(StatsTable);
  86 };
  87
  88 // StatsCounters are dynamically created values which can be tracked in
  89 // the StatsTable.  They are designed to be lightweight to create and
  90 // easy to use.
  91 //
  92 // Internally, a counter represents a value in a row of a StatsTable.
  93 // The row has a 32bit value for each process/thread in the table and also
  94 // a name (stored in the table metadata).  Since the storage location can be
  95 // thread-specific, this class cannot be shared across threads.
  96 class StatsCounter {
  97  public:
  98   StatsCounter() { }
  99   explicit StatsCounter(Isolate* isolate, const char* name)
 100       : isolate_(isolate), name_(name), ptr_(NULL), lookup_done_(false) { }
 101
 102   // Sets the counter to a specific value.
 103   void Set(int value) {
 104     int* loc = GetPtr();
 105     if (loc) *loc = value;
 106   }
 107
 108   // Increments the counter.
 109   void Increment() {
 110     int* loc = GetPtr();
 111     if (loc) (*loc)++;
 112   }
 113
 114   void Increment(int value) {
 115     int* loc = GetPtr();
 116     if (loc)
 117       (*loc) += value;
 118   }
 119
 120   // Decrements the counter.
 121   void Decrement() {
 122     int* loc = GetPtr();
 123     if (loc) (*loc)--;
 124   }
 125
 126   void Decrement(int value) {
 127     int* loc = GetPtr();
 128     if (loc) (*loc) -= value;
 129   }
 130
 131   // Is this counter enabled?
 132   // Returns false if table is full.
 133   bool Enabled() {
 134     return GetPtr() != NULL;
 135   }
 136
 137   // Get the internal pointer to the counter. This is used
 138   // by the code generator to emit code that manipulates a
 139   // given counter without calling the runtime system.
 140   int* GetInternalPointer() {
 141     int* loc = GetPtr();
 142     ASSERT(loc != NULL);
 143     return loc;
 144   }
 145
 146   // Reset the cached internal pointer.
 147   void Reset() { lookup_done_ = false; }
 148
 149  protected:
 150   // Returns the cached address of this counter location.
 151   int* GetPtr() {
 152     if (lookup_done_) return ptr_;
 153     lookup_done_ = true;
 154     ptr_ = FindLocationInStatsTable();
 155     return ptr_;
 156   }
 157
 158  private:
 159   int* FindLocationInStatsTable() const;
 160
 161   Isolate* isolate_;
 162   const char* name_;
 163   int* ptr_;
 164   bool lookup_done_;
 165 };
 166
 167 // A Histogram represents a dynamically created histogram in the StatsTable.
 168 // It will be registered with the histogram system on first use.
 169 class Histogram {
 170  public:
 171   Histogram() { }
 172   Histogram(const char* name,
 173             int min,
 174             int max,
 175             int num_buckets,
 176             Isolate* isolate)
 177       : name_(name),
 178         min_(min),
 179         max_(max),
 180         num_buckets_(num_buckets),
 181         histogram_(NULL),
 182         lookup_done_(false),
 183         isolate_(isolate) { }
 184
 185   // Add a single sample to this histogram.
 186   void AddSample(int sample);
 187
 188   // Returns true if this histogram is enabled.
 189   bool Enabled() {
 190     return GetHistogram() != NULL;
 191   }
 192
 193   // Reset the cached internal pointer.
 194   void Reset() {
 195     lookup_done_ = false;
 196   }
 197
 198  protected:
 199   // Returns the handle to the histogram.
 200   void* GetHistogram() {
 201     if (!lookup_done_) {
 202       lookup_done_ = true;
 203       histogram_ = CreateHistogram();
 204     }
 205     return histogram_;
 206   }
 207
 208   const char* name() { return name_; }
 209   Isolate* isolate() const { return isolate_; }
 210
 211  private:
 212   void* CreateHistogram() const;
 213
 214   const char* name_;
 215   int min_;
 216   int max_;
 217   int num_buckets_;
 218   void* histogram_;
 219   bool lookup_done_;
 220   Isolate* isolate_;
 221 };
 222
 223 // A HistogramTimer allows distributions of results to be created.
 224 class HistogramTimer : public Histogram {
 225  public:
 226   HistogramTimer() { }
 227   HistogramTimer(const char* name,
 228                  int min,
 229                  int max,
 230                  int num_buckets,
 231                  Isolate* isolate)
 232       : Histogram(name, min, max, num_buckets, isolate) {}
 233
 234   // Start the timer.
 235   void Start();
 236
 237   // Stop the timer and record the results.
 238   void Stop();
 239
 240   // Returns true if the timer is running.
 241   bool Running() {
 242     return Enabled() && timer_.IsStarted();
 243   }
 244
 245   // TODO(bmeurer): Remove this when HistogramTimerScope is fixed.
 246 #ifdef DEBUG
 247   ElapsedTimer* timer() { return &timer_; }
 248 #endif
 249
 250  private:
 251   ElapsedTimer timer_;
 252 };
 253
 254 // Helper class for scoping a HistogramTimer.
 255 // TODO(bmeurer): The ifdeffery is an ugly hack around the fact that the
 256 // Parser is currently reentrant (when it throws an error, we call back
 257 // into JavaScript and all bets are off), but ElapsedTimer is not
 258 // reentry-safe. Fix this properly and remove |allow_nesting|.
 259 class HistogramTimerScope BASE_EMBEDDED {
 260  public:
 261   explicit HistogramTimerScope(HistogramTimer* timer,
 262                                bool allow_nesting = false)
 263 #ifdef DEBUG
 264       : timer_(timer),
 265         skipped_timer_start_(false) {
 266     if (timer_->timer()->IsStarted() && allow_nesting) {
 267       skipped_timer_start_ = true;
 268     } else {
 269       timer_->Start();
 270     }
 271   }
 272 #else
 273       : timer_(timer) {
 274     timer_->Start();
 275   }
 276 #endif
 277   ~HistogramTimerScope() {
 278 #ifdef DEBUG
 279     if (!skipped_timer_start_) {
 280       timer_->Stop();
 281     }
 282 #else
 283     timer_->Stop();
 284 #endif
 285   }
 286
 287  private:
 288   HistogramTimer* timer_;
 289 #ifdef DEBUG
 290   bool skipped_timer_start_;
 291 #endif
 292 };
 293
 294
 295 #define HISTOGRAM_TIMER_LIST(HT)                                      \
 296   /* Garbage collection timers. */                                    \
 297   HT(gc_compactor, V8.GCCompactor)                                    \
 298   HT(gc_scavenger, V8.GCScavenger)                                    \
 299   HT(gc_context, V8.GCContext) /* GC context cleanup time */          \
 300   /* Parsing timers. */                                               \
 301   HT(parse, V8.Parse)                                                 \
 302   HT(parse_lazy, V8.ParseLazy)                                        \
 303   HT(pre_parse, V8.PreParse)                                          \
 304   /* Total compilation times. */                                      \
 305   HT(compile, V8.Compile)                                             \
 306   HT(compile_eval, V8.CompileEval)                                    \
 307   HT(compile_lazy, V8.CompileLazy)
 308
 309 #define HISTOGRAM_PERCENTAGE_LIST(HP)                                 \
 310   /* Heap fragmentation. */                                           \
 311   HP(external_fragmentation_total,                                    \
 312      V8.MemoryExternalFragmentationTotal)                             \
 313   HP(external_fragmentation_old_pointer_space,                        \
 314      V8.MemoryExternalFragmentationOldPointerSpace)                   \
 315   HP(external_fragmentation_old_data_space,                           \
 316      V8.MemoryExternalFragmentationOldDataSpace)                      \
 317   HP(external_fragmentation_code_space,                               \
 318      V8.MemoryExternalFragmentationCodeSpace)                         \
 319   HP(external_fragmentation_map_space,                                \
 320      V8.MemoryExternalFragmentationMapSpace)                          \
 321   HP(external_fragmentation_cell_space,                               \
 322      V8.MemoryExternalFragmentationCellSpace)                         \
 323   HP(external_fragmentation_property_cell_space,                      \
 324      V8.MemoryExternalFragmentationPropertyCellSpace)                 \
 325   HP(external_fragmentation_lo_space,                                 \
 326      V8.MemoryExternalFragmentationLoSpace)                           \
 327   /* Percentages of heap committed to each space. */                  \
 328   HP(heap_fraction_new_space,                                         \
 329      V8.MemoryHeapFractionNewSpace)                                   \
 330   HP(heap_fraction_old_pointer_space,                                 \
 331      V8.MemoryHeapFractionOldPointerSpace)                            \
 332   HP(heap_fraction_old_data_space,                                    \
 333      V8.MemoryHeapFractionOldDataSpace)                               \
 334   HP(heap_fraction_code_space,                                        \
 335      V8.MemoryHeapFractionCodeSpace)                                  \
 336   HP(heap_fraction_map_space,                                         \
 337      V8.MemoryHeapFractionMapSpace)                                   \
 338   HP(heap_fraction_cell_space,                                        \
 339      V8.MemoryHeapFractionCellSpace)                                  \
 340   HP(heap_fraction_property_cell_space,                               \
 341      V8.MemoryHeapFractionPropertyCellSpace)                          \
 342   HP(heap_fraction_lo_space,                                          \
 343      V8.MemoryHeapFractionLoSpace)                                    \
 344   /* Percentage of crankshafted codegen. */                           \
 345   HP(codegen_fraction_crankshaft,                                     \
 346      V8.CodegenFractionCrankshaft)                                    \
 347
 348
 349 #define HISTOGRAM_MEMORY_LIST(HM)                                     \
 350   HM(heap_sample_total_committed, V8.MemoryHeapSampleTotalCommitted)  \
 351   HM(heap_sample_total_used, V8.MemoryHeapSampleTotalUsed)            \
 352   HM(heap_sample_map_space_committed,                                 \
 353      V8.MemoryHeapSampleMapSpaceCommitted)                            \
 354   HM(heap_sample_cell_space_committed,                                \
 355      V8.MemoryHeapSampleCellSpaceCommitted)                           \
 356   HM(heap_sample_property_cell_space_committed,                       \
 357      V8.MemoryHeapSamplePropertyCellSpaceCommitted)                   \
 358   HM(heap_sample_code_space_committed,                                \
 359      V8.MemoryHeapSampleCodeSpaceCommitted)                           \
 360   HM(heap_sample_maximum_committed,                                   \
 361      V8.MemoryHeapSampleMaximumCommitted)                             \
 362
 363
 364 // WARNING: STATS_COUNTER_LIST_* is a very large macro that is causing MSVC
 365 // Intellisense to crash.  It was broken into two macros (each of length 40
 366 // lines) rather than one macro (of length about 80 lines) to work around
 367 // this problem.  Please avoid using recursive macros of this length when
 368 // possible.
 369 #define STATS_COUNTER_LIST_1(SC)                                      \
 370   /* Global Handle Count*/                                            \
 371   SC(global_handles, V8.GlobalHandles)                                \
 372   /* OS Memory allocated */                                           \
 373   SC(memory_allocated, V8.OsMemoryAllocated)                          \
 374   SC(normalized_maps, V8.NormalizedMaps)                              \
 375   SC(props_to_dictionary, V8.ObjectPropertiesToDictionary)            \
 376   SC(elements_to_dictionary, V8.ObjectElementsToDictionary)           \
 377   SC(alive_after_last_gc, V8.AliveAfterLastGC)                        \
 378   SC(objs_since_last_young, V8.ObjsSinceLastYoung)                    \
 379   SC(objs_since_last_full, V8.ObjsSinceLastFull)                      \
 380   SC(string_table_capacity, V8.StringTableCapacity)                   \
 381   SC(number_of_symbols, V8.NumberOfSymbols)                           \
 382   SC(script_wrappers, V8.ScriptWrappers)                              \
 383   SC(call_initialize_stubs, V8.CallInitializeStubs)                   \
 384   SC(call_premonomorphic_stubs, V8.CallPreMonomorphicStubs)           \
 385   SC(call_normal_stubs, V8.CallNormalStubs)                           \
 386   SC(call_megamorphic_stubs, V8.CallMegamorphicStubs)                 \
 387   SC(inlined_copied_elements, V8.InlinedCopiedElements)              \
 388   SC(arguments_adaptors, V8.ArgumentsAdaptors)                        \
 389   SC(compilation_cache_hits, V8.CompilationCacheHits)                 \
 390   SC(compilation_cache_misses, V8.CompilationCacheMisses)             \
 391   SC(string_ctor_calls, V8.StringConstructorCalls)                    \
 392   SC(string_ctor_conversions, V8.StringConstructorConversions)        \
 393   SC(string_ctor_cached_number, V8.StringConstructorCachedNumber)     \
 394   SC(string_ctor_string_value, V8.StringConstructorStringValue)       \
 395   SC(string_ctor_gc_required, V8.StringConstructorGCRequired)         \
 396   /* Amount of evaled source code. */                                 \
 397   SC(total_eval_size, V8.TotalEvalSize)                               \
 398   /* Amount of loaded source code. */                                 \
 399   SC(total_load_size, V8.TotalLoadSize)                               \
 400   /* Amount of parsed source code. */                                 \
 401   SC(total_parse_size, V8.TotalParseSize)                             \
 402   /* Amount of source code skipped over using preparsing. */          \
 403   SC(total_preparse_skipped, V8.TotalPreparseSkipped)                 \
 404   /* Number of symbol lookups skipped using preparsing */             \
 405   SC(total_preparse_symbols_skipped, V8.TotalPreparseSymbolSkipped)   \
 406   /* Amount of compiled source code. */                               \
 407   SC(total_compile_size, V8.TotalCompileSize)                         \
 408   /* Amount of source code compiled with the full codegen. */         \
 409   SC(total_full_codegen_source_size, V8.TotalFullCodegenSourceSize)   \
 410   /* Number of contexts created from scratch. */                      \
 411   SC(contexts_created_from_scratch, V8.ContextsCreatedFromScratch)    \
 412   /* Number of contexts created by partial snapshot. */               \
 413   SC(contexts_created_by_snapshot, V8.ContextsCreatedBySnapshot)      \
 414   /* Number of code objects found from pc. */                         \
 415   SC(pc_to_code, V8.PcToCode)                                         \
 416   SC(pc_to_code_cached, V8.PcToCodeCached)                            \
 417   /* The store-buffer implementation of the write barrier. */         \
 418   SC(store_buffer_compactions, V8.StoreBufferCompactions)             \
 419   SC(store_buffer_overflows, V8.StoreBufferOverflows)
 420
 421
 422 #define STATS_COUNTER_LIST_2(SC)                                      \
 423   /* Number of code stubs. */                                         \
 424   SC(code_stubs, V8.CodeStubs)                                        \
 425   /* Amount of stub code. */                                          \
 426   SC(total_stubs_code_size, V8.TotalStubsCodeSize)                    \
 427   /* Amount of (JS) compiled code. */                                 \
 428   SC(total_compiled_code_size, V8.TotalCompiledCodeSize)              \
 429   SC(gc_compactor_caused_by_request, V8.GCCompactorCausedByRequest)   \
 430   SC(gc_compactor_caused_by_promoted_data,                            \
 431      V8.GCCompactorCausedByPromotedData)                              \
 432   SC(gc_compactor_caused_by_oldspace_exhaustion,                      \
 433      V8.GCCompactorCausedByOldspaceExhaustion)                        \
 434   SC(gc_last_resort_from_js, V8.GCLastResortFromJS)                   \
 435   SC(gc_last_resort_from_handles, V8.GCLastResortFromHandles)         \
 436   /* How is the generic keyed-load stub used? */                      \
 437   SC(keyed_load_generic_smi, V8.KeyedLoadGenericSmi)                  \
 438   SC(keyed_load_generic_symbol, V8.KeyedLoadGenericSymbol)            \
 439   SC(keyed_load_generic_lookup_cache, V8.KeyedLoadGenericLookupCache) \
 440   SC(keyed_load_generic_slow, V8.KeyedLoadGenericSlow)                \
 441   SC(keyed_load_polymorphic_stubs, V8.KeyedLoadPolymorphicStubs)      \
 442   SC(keyed_load_external_array_slow, V8.KeyedLoadExternalArraySlow)   \
 443   /* How is the generic keyed-call stub used? */                      \
 444   SC(keyed_call_generic_smi_fast, V8.KeyedCallGenericSmiFast)         \
 445   SC(keyed_call_generic_smi_dict, V8.KeyedCallGenericSmiDict)         \
 446   SC(keyed_call_generic_lookup_cache, V8.KeyedCallGenericLookupCache) \
 447   SC(keyed_call_generic_lookup_dict, V8.KeyedCallGenericLookupDict)   \
 448   SC(keyed_call_generic_slow, V8.KeyedCallGenericSlow)                \
 449   SC(keyed_call_generic_slow_load, V8.KeyedCallGenericSlowLoad)       \
 450   SC(named_load_global_stub, V8.NamedLoadGlobalStub)                  \
 451   SC(named_store_global_inline, V8.NamedStoreGlobalInline)            \
 452   SC(named_store_global_inline_miss, V8.NamedStoreGlobalInlineMiss)   \
 453   SC(keyed_store_polymorphic_stubs, V8.KeyedStorePolymorphicStubs)    \
 454   SC(keyed_store_external_array_slow, V8.KeyedStoreExternalArraySlow) \
 455   SC(store_normal_miss, V8.StoreNormalMiss)                           \
 456   SC(store_normal_hit, V8.StoreNormalHit)                             \
 457   SC(cow_arrays_created_stub, V8.COWArraysCreatedStub)                \
 458   SC(cow_arrays_created_runtime, V8.COWArraysCreatedRuntime)          \
 459   SC(cow_arrays_converted, V8.COWArraysConverted)                     \
 460   SC(call_miss, V8.CallMiss)                                          \
 461   SC(keyed_call_miss, V8.KeyedCallMiss)                               \
 462   SC(load_miss, V8.LoadMiss)                                          \
 463   SC(keyed_load_miss, V8.KeyedLoadMiss)                               \
 464   SC(call_const, V8.CallConst)                                        \
 465   SC(call_const_fast_api, V8.CallConstFastApi)                        \
 466   SC(call_const_interceptor, V8.CallConstInterceptor)                 \
 467   SC(call_const_interceptor_fast_api, V8.CallConstInterceptorFastApi) \
 468   SC(call_global_inline, V8.CallGlobalInline)                         \
 469   SC(call_global_inline_miss, V8.CallGlobalInlineMiss)                \
 470   SC(constructed_objects, V8.ConstructedObjects)                      \
 471   SC(constructed_objects_runtime, V8.ConstructedObjectsRuntime)       \
 472   SC(negative_lookups, V8.NegativeLookups)                            \
 473   SC(negative_lookups_miss, V8.NegativeLookupsMiss)                   \
 474   SC(megamorphic_stub_cache_probes, V8.MegamorphicStubCacheProbes)    \
 475   SC(megamorphic_stub_cache_misses, V8.MegamorphicStubCacheMisses)    \
 476   SC(megamorphic_stub_cache_updates, V8.MegamorphicStubCacheUpdates)  \
 477   SC(array_function_runtime, V8.ArrayFunctionRuntime)                 \
 478   SC(array_function_native, V8.ArrayFunctionNative)                   \
 479   SC(for_in, V8.ForIn)                                                \
 480   SC(enum_cache_hits, V8.EnumCacheHits)                               \
 481   SC(enum_cache_misses, V8.EnumCacheMisses)                           \
 482   SC(zone_segment_bytes, V8.ZoneSegmentBytes)                         \
 483   SC(fast_new_closure_total, V8.FastNewClosureTotal)                  \
 484   SC(fast_new_closure_try_optimized, V8.FastNewClosureTryOptimized)   \
 485   SC(fast_new_closure_install_optimized, V8.FastNewClosureInstallOptimized) \
 486   SC(string_add_runtime, V8.StringAddRuntime)                         \
 487   SC(string_add_native, V8.StringAddNative)                           \
 488   SC(string_add_runtime_ext_to_ascii, V8.StringAddRuntimeExtToAscii)  \
 489   SC(sub_string_runtime, V8.SubStringRuntime)                         \
 490   SC(sub_string_native, V8.SubStringNative)                           \
 491   SC(string_add_make_two_char, V8.StringAddMakeTwoChar)               \
 492   SC(string_compare_native, V8.StringCompareNative)                   \
 493   SC(string_compare_runtime, V8.StringCompareRuntime)                 \
 494   SC(regexp_entry_runtime, V8.RegExpEntryRuntime)                     \
 495   SC(regexp_entry_native, V8.RegExpEntryNative)                       \
 496   SC(number_to_string_native, V8.NumberToStringNative)                \
 497   SC(number_to_string_runtime, V8.NumberToStringRuntime)              \
 498   SC(math_acos, V8.MathAcos)                                          \
 499   SC(math_asin, V8.MathAsin)                                          \
 500   SC(math_atan, V8.MathAtan)                                          \
 501   SC(math_atan2, V8.MathAtan2)                                        \
 502   SC(math_exp, V8.MathExp)                                            \
 503   SC(math_floor, V8.MathFloor)                                        \
 504   SC(math_log, V8.MathLog)                                            \
 505   SC(math_pow, V8.MathPow)                                            \
 506   SC(math_round, V8.MathRound)                                        \
 507   SC(math_sqrt, V8.MathSqrt)                                          \
 508   SC(stack_interrupts, V8.StackInterrupts)                            \
 509   SC(runtime_profiler_ticks, V8.RuntimeProfilerTicks)                 \
 510   SC(bounds_checks_eliminated, V8.BoundsChecksEliminated)             \
 511   SC(bounds_checks_hoisted, V8.BoundsChecksHoisted)                   \
 512   SC(soft_deopts_requested, V8.SoftDeoptsRequested)                   \
 513   SC(soft_deopts_inserted, V8.SoftDeoptsInserted)                     \
 514   SC(soft_deopts_executed, V8.SoftDeoptsExecuted)                     \
 515   /* Number of write barriers in generated code. */                   \
 516   SC(write_barriers_dynamic, V8.WriteBarriersDynamic)                 \
 517   SC(write_barriers_static, V8.WriteBarriersStatic)                   \
 518   SC(new_space_bytes_available, V8.MemoryNewSpaceBytesAvailable)      \
 519   SC(new_space_bytes_committed, V8.MemoryNewSpaceBytesCommitted)      \
 520   SC(new_space_bytes_used, V8.MemoryNewSpaceBytesUsed)                \
 521   SC(old_pointer_space_bytes_available,                               \
 522      V8.MemoryOldPointerSpaceBytesAvailable)                          \
 523   SC(old_pointer_space_bytes_committed,                               \
 524      V8.MemoryOldPointerSpaceBytesCommitted)                          \
 525   SC(old_pointer_space_bytes_used, V8.MemoryOldPointerSpaceBytesUsed) \
 526   SC(old_data_space_bytes_available, V8.MemoryOldDataSpaceBytesAvailable) \
 527   SC(old_data_space_bytes_committed, V8.MemoryOldDataSpaceBytesCommitted) \
 528   SC(old_data_space_bytes_used, V8.MemoryOldDataSpaceBytesUsed)       \
 529   SC(code_space_bytes_available, V8.MemoryCodeSpaceBytesAvailable)    \
 530   SC(code_space_bytes_committed, V8.MemoryCodeSpaceBytesCommitted)    \
 531   SC(code_space_bytes_used, V8.MemoryCodeSpaceBytesUsed)              \
 532   SC(map_space_bytes_available, V8.MemoryMapSpaceBytesAvailable)      \
 533   SC(map_space_bytes_committed, V8.MemoryMapSpaceBytesCommitted)      \
 534   SC(map_space_bytes_used, V8.MemoryMapSpaceBytesUsed)                \
 535   SC(cell_space_bytes_available, V8.MemoryCellSpaceBytesAvailable)    \
 536   SC(cell_space_bytes_committed, V8.MemoryCellSpaceBytesCommitted)    \
 537   SC(cell_space_bytes_used, V8.MemoryCellSpaceBytesUsed)              \
 538   SC(property_cell_space_bytes_available,                             \
 539      V8.MemoryPropertyCellSpaceBytesAvailable)                        \
 540   SC(property_cell_space_bytes_committed,                             \
 541      V8.MemoryPropertyCellSpaceBytesCommitted)                        \
 542   SC(property_cell_space_bytes_used,                                  \
 543      V8.MemoryPropertyCellSpaceBytesUsed)                             \
 544   SC(lo_space_bytes_available, V8.MemoryLoSpaceBytesAvailable)        \
 545   SC(lo_space_bytes_committed, V8.MemoryLoSpaceBytesCommitted)        \
 546   SC(lo_space_bytes_used, V8.MemoryLoSpaceBytesUsed)
 547
 548
 549 // This file contains all the v8 counters that are in use.
 550 class Counters {
 551  public:
 552 #define HT(name, caption) \
 553   HistogramTimer* name() { return &name##_; }
 554   HISTOGRAM_TIMER_LIST(HT)
 555 #undef HT
 556
 557 #define HP(name, caption) \
 558   Histogram* name() { return &name##_; }
 559   HISTOGRAM_PERCENTAGE_LIST(HP)
 560 #undef HP
 561
 562 #define HM(name, caption) \
 563   Histogram* name() { return &name##_; }
 564   HISTOGRAM_MEMORY_LIST(HM)
 565 #undef HM
 566
 567 #define SC(name, caption) \
 568   StatsCounter* name() { return &name##_; }
 569   STATS_COUNTER_LIST_1(SC)
 570   STATS_COUNTER_LIST_2(SC)
 571 #undef SC
 572
 573 #define SC(name) \
 574   StatsCounter* count_of_##name() { return &count_of_##name##_; } \
 575   StatsCounter* size_of_##name() { return &size_of_##name##_; }
 576   INSTANCE_TYPE_LIST(SC)
 577 #undef SC
 578
 579 #define SC(name) \
 580   StatsCounter* count_of_CODE_TYPE_##name() \
 581     { return &count_of_CODE_TYPE_##name##_; } \
 582   StatsCounter* size_of_CODE_TYPE_##name() \
 583     { return &size_of_CODE_TYPE_##name##_; }
 584   CODE_KIND_LIST(SC)
 585 #undef SC
 586
 587 #define SC(name) \
 588   StatsCounter* count_of_FIXED_ARRAY_##name() \
 589     { return &count_of_FIXED_ARRAY_##name##_; } \
 590   StatsCounter* size_of_FIXED_ARRAY_##name() \
 591     { return &size_of_FIXED_ARRAY_##name##_; }
 592   FIXED_ARRAY_SUB_INSTANCE_TYPE_LIST(SC)
 593 #undef SC
 594
 595 #define SC(name) \
 596   StatsCounter* count_of_CODE_AGE_##name() \
 597     { return &count_of_CODE_AGE_##name##_; } \
 598   StatsCounter* size_of_CODE_AGE_##name() \
 599     { return &size_of_CODE_AGE_##name##_; }
 600   CODE_AGE_LIST_COMPLETE(SC)
 601 #undef SC
 602
 603   enum Id {
 604 #define RATE_ID(name, caption) k_##name,
 605     HISTOGRAM_TIMER_LIST(RATE_ID)
 606 #undef RATE_ID
 607 #define PERCENTAGE_ID(name, caption) k_##name,
 608     HISTOGRAM_PERCENTAGE_LIST(PERCENTAGE_ID)
 609 #undef PERCENTAGE_ID
 610 #define MEMORY_ID(name, caption) k_##name,
 611     HISTOGRAM_MEMORY_LIST(MEMORY_ID)
 612 #undef MEMORY_ID
 613 #define COUNTER_ID(name, caption) k_##name,
 614     STATS_COUNTER_LIST_1(COUNTER_ID)
 615     STATS_COUNTER_LIST_2(COUNTER_ID)
 616 #undef COUNTER_ID
 617 #define COUNTER_ID(name) kCountOf##name, kSizeOf##name,
 618     INSTANCE_TYPE_LIST(COUNTER_ID)
 619 #undef COUNTER_ID
 620 #define COUNTER_ID(name) kCountOfCODE_TYPE_##name, \
 621     kSizeOfCODE_TYPE_##name,
 622     CODE_KIND_LIST(COUNTER_ID)
 623 #undef COUNTER_ID
 624 #define COUNTER_ID(name) kCountOfFIXED_ARRAY__##name, \
 625     kSizeOfFIXED_ARRAY__##name,
 626     FIXED_ARRAY_SUB_INSTANCE_TYPE_LIST(COUNTER_ID)
 627 #undef COUNTER_ID
 628 #define COUNTER_ID(name) kCountOfCODE_AGE__##name, \
 629     kSizeOfCODE_AGE__##name,
 630     CODE_AGE_LIST_COMPLETE(COUNTER_ID)
 631 #undef COUNTER_ID
 632     stats_counter_count
 633   };
 634
 635   void ResetCounters();
 636   void ResetHistograms();
 637
 638  private:
 639 #define HT(name, caption) \
 640   HistogramTimer name##_;
 641   HISTOGRAM_TIMER_LIST(HT)
 642 #undef HT
 643
 644 #define HP(name, caption) \
 645   Histogram name##_;
 646   HISTOGRAM_PERCENTAGE_LIST(HP)
 647 #undef HP
 648
 649 #define HM(name, caption) \
 650   Histogram name##_;
 651   HISTOGRAM_MEMORY_LIST(HM)
 652 #undef HM
 653
 654 #define SC(name, caption) \
 655   StatsCounter name##_;
 656   STATS_COUNTER_LIST_1(SC)
 657   STATS_COUNTER_LIST_2(SC)
 658 #undef SC
 659
 660 #define SC(name) \
 661   StatsCounter size_of_##name##_; \
 662   StatsCounter count_of_##name##_;
 663   INSTANCE_TYPE_LIST(SC)
 664 #undef SC
 665
 666 #define SC(name) \
 667   StatsCounter size_of_CODE_TYPE_##name##_; \
 668   StatsCounter count_of_CODE_TYPE_##name##_;
 669   CODE_KIND_LIST(SC)
 670 #undef SC
 671
 672 #define SC(name) \
 673   StatsCounter size_of_FIXED_ARRAY_##name##_; \
 674   StatsCounter count_of_FIXED_ARRAY_##name##_;
 675   FIXED_ARRAY_SUB_INSTANCE_TYPE_LIST(SC)
 676 #undef SC
 677
 678 #define SC(name) \
 679   StatsCounter size_of_CODE_AGE_##name##_; \
 680   StatsCounter count_of_CODE_AGE_##name##_;
 681   CODE_AGE_LIST_COMPLETE(SC)
 682 #undef SC
 683
 684   friend class Isolate;
 685
 686   explicit Counters(Isolate* isolate);
 687
 688   DISALLOW_IMPLICIT_CONSTRUCTORS(Counters);
 689 };
 690
 691 } }  // namespace v8::internal
 692
 693 #endif  // V8_COUNTERS_H_