This reverts commit r298165, as it broke the ARM builds.
llvm-svn: 298185
"duplicate module file extension block name '%0'">,
InGroup<ModuleFileExtension>;
-def warn_module_system_bit_conflict : Warning<
- "module file '%0' was validated as a system module and is now being imported "
- "as a non-system module; any difference in diagnostic options will be ignored">,
- InGroup<ModuleConflict>;
-
} // let CategoryName
} // let Component
+++ /dev/null
-//===- MemoryBufferCache.h - Cache for loaded memory buffers ----*- C++ -*-===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_CLANG_BASIC_MEMORYBUFFERCACHE_H
-#define LLVM_CLANG_BASIC_MEMORYBUFFERCACHE_H
-
-#include "llvm/ADT/IntrusiveRefCntPtr.h"
-#include "llvm/ADT/StringMap.h"
-#include <memory>
-
-namespace llvm {
-class MemoryBuffer;
-} // end namespace llvm
-
-namespace clang {
-
-/// Manage memory buffers across multiple users.
-///
-/// Ensures that multiple users have a consistent view of each buffer. This is
-/// used by \a CompilerInstance when building PCMs to ensure that each \a
-/// ModuleManager sees the same files.
-///
-/// \a finalizeCurrentBuffers() should be called before creating a new user.
-/// This locks in the current buffers, ensuring that no buffer that has already
-/// been accessed can be purged, preventing use-after-frees.
-class MemoryBufferCache : public llvm::RefCountedBase<MemoryBufferCache> {
- struct BufferEntry {
- std::unique_ptr<llvm::MemoryBuffer> Buffer;
-
- /// Track the timeline of when this was added to the cache.
- unsigned Index;
- };
-
- /// Cache of buffers.
- llvm::StringMap<BufferEntry> Buffers;
-
- /// Monotonically increasing index.
- unsigned NextIndex = 0;
-
- /// Bumped to prevent "older" buffers from being removed.
- unsigned FirstRemovableIndex = 0;
-
-public:
- /// Store the Buffer under the Filename.
- ///
- /// \pre There is not already buffer is not already in the cache.
- /// \return a reference to the buffer as a convenience.
- llvm::MemoryBuffer &addBuffer(llvm::StringRef Filename,
- std::unique_ptr<llvm::MemoryBuffer> Buffer);
-
- /// Try to remove a buffer from the cache.
- ///
- /// \return false on success, iff \c !isBufferFinal().
- bool tryToRemoveBuffer(llvm::StringRef Filename);
-
- /// Get a pointer to the buffer if it exists; else nullptr.
- llvm::MemoryBuffer *lookupBuffer(llvm::StringRef Filename);
-
- /// Check whether the buffer is final.
- ///
- /// \return true iff \a finalizeCurrentBuffers() has been called since the
- /// buffer was added. This prevents buffers from being removed.
- bool isBufferFinal(llvm::StringRef Filename);
-
- /// Finalize the current buffers in the cache.
- ///
- /// Should be called when creating a new user to ensure previous uses aren't
- /// invalidated.
- void finalizeCurrentBuffers();
-};
-
-} // end namespace clang
-
-#endif // LLVM_CLANG_BASIC_MEMORYBUFFERCACHE_H
class FileEntry;
class FileManager;
class HeaderSearch;
-class MemoryBufferCache;
class Preprocessor;
class PCHContainerOperations;
class PCHContainerReader;
IntrusiveRefCntPtr<DiagnosticsEngine> Diagnostics;
IntrusiveRefCntPtr<FileManager> FileMgr;
IntrusiveRefCntPtr<SourceManager> SourceMgr;
- IntrusiveRefCntPtr<MemoryBufferCache> PCMCache;
std::unique_ptr<HeaderSearch> HeaderInfo;
IntrusiveRefCntPtr<TargetInfo> Target;
std::shared_ptr<Preprocessor> PP;
class FileEntry;
class FileManager;
class FrontendAction;
-class MemoryBufferCache;
class Module;
class Preprocessor;
class Sema;
/// The source manager.
IntrusiveRefCntPtr<SourceManager> SourceMgr;
- /// The cache of PCM files.
- IntrusiveRefCntPtr<MemoryBufferCache> PCMCache;
-
/// The preprocessor.
std::shared_ptr<Preprocessor> PP;
explicit CompilerInstance(
std::shared_ptr<PCHContainerOperations> PCHContainerOps =
std::make_shared<PCHContainerOperations>(),
- MemoryBufferCache *SharedPCMCache = nullptr);
+ bool BuildingModule = false);
~CompilerInstance() override;
/// @name High-Level Operations
}
void setExternalSemaSource(IntrusiveRefCntPtr<ExternalSemaSource> ESS);
-
- MemoryBufferCache &getPCMCache() const { return *PCMCache; }
};
} // end namespace clang
class FileManager;
class FileEntry;
class HeaderSearch;
-class MemoryBufferCache;
class PragmaNamespace;
class PragmaHandler;
class CommentHandler;
const TargetInfo *AuxTarget;
FileManager &FileMgr;
SourceManager &SourceMgr;
- MemoryBufferCache &PCMCache;
std::unique_ptr<ScratchBuffer> ScratchBuf;
HeaderSearch &HeaderInfo;
ModuleLoader &TheModuleLoader;
public:
Preprocessor(std::shared_ptr<PreprocessorOptions> PPOpts,
DiagnosticsEngine &diags, LangOptions &opts, SourceManager &SM,
- MemoryBufferCache &PCMCache,
HeaderSearch &Headers, ModuleLoader &TheModuleLoader,
IdentifierInfoLookup *IILookup = nullptr,
bool OwnsHeaderSearch = false,
const TargetInfo *getAuxTargetInfo() const { return AuxTarget; }
FileManager &getFileManager() const { return FileMgr; }
SourceManager &getSourceManager() const { return SourceMgr; }
- MemoryBufferCache &getPCMCache() const { return PCMCache; }
HeaderSearch &getHeaderSearchInfo() const { return HeaderInfo; }
IdentifierTable &getIdentifierTable() { return Identifiers; }
/// \brief The module manager which manages modules and their dependencies
ModuleManager ModuleMgr;
- /// The cache that manages memory buffers for PCM files.
- MemoryBufferCache &PCMCache;
-
/// \brief A dummy identifier resolver used to merge TU-scope declarations in
/// C, for the cases where we don't have a Sema object to provide a real
/// identifier resolver.
class OpaqueValueExpr;
class OpenCLOptions;
class ASTReader;
-class MemoryBufferCache;
class Module;
class ModuleFileExtension;
class ModuleFileExtensionWriter;
/// The buffer associated with the bitstream.
const SmallVectorImpl<char> &Buffer;
- /// \brief The PCM manager which manages memory buffers for pcm files.
- MemoryBufferCache &PCMCache;
-
/// \brief The ASTContext we're writing.
ASTContext *Context = nullptr;
/// \brief Create a new precompiled header writer that outputs to
/// the given bitstream.
ASTWriter(llvm::BitstreamWriter &Stream, SmallVectorImpl<char> &Buffer,
- MemoryBufferCache &PCMCache,
ArrayRef<std::shared_ptr<ModuleFileExtension>> Extensions,
bool IncludeTimestamps = true);
~ASTWriter() override;
/// \brief The generation of which this module file is a part.
unsigned Generation;
- /// The memory buffer that stores the data associated with
- /// this AST file, owned by the PCMCache in the ModuleManager.
- llvm::MemoryBuffer *Buffer;
+ /// \brief The memory buffer that stores the data associated with
+ /// this AST file.
+ std::unique_ptr<llvm::MemoryBuffer> Buffer;
/// \brief The size of this file, in bits.
uint64_t SizeInBits = 0;
namespace clang {
class GlobalModuleIndex;
-class MemoryBufferCache;
class ModuleMap;
class PCHContainerReader;
/// FileEntry *.
FileManager &FileMgr;
- /// Cache of PCM files.
- IntrusiveRefCntPtr<MemoryBufferCache> PCMCache;
-
/// \brief Knows how to unwrap module containers.
const PCHContainerReader &PCHContainerRdr;
ModuleReverseIterator;
typedef std::pair<uint32_t, StringRef> ModuleOffset;
- explicit ModuleManager(FileManager &FileMgr, MemoryBufferCache &PCMCache,
+ explicit ModuleManager(FileManager &FileMgr,
const PCHContainerReader &PCHContainerRdr);
~ModuleManager();
/// \brief View the graphviz representation of the module graph.
void viewGraph();
-
- MemoryBufferCache &getPCMCache() const { return *PCMCache; }
};
} } // end namespace clang::serialization
FileSystemStatCache.cpp
IdentifierTable.cpp
LangOptions.cpp
- MemoryBufferCache.cpp
Module.cpp
ObjCRuntime.cpp
OpenMPKinds.cpp
+++ /dev/null
-//===- MemoryBufferCache.cpp - Cache for loaded memory buffers ------------===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "clang/Basic/MemoryBufferCache.h"
-#include "llvm/Support/MemoryBuffer.h"
-
-using namespace clang;
-
-llvm::MemoryBuffer &
-MemoryBufferCache::addBuffer(llvm::StringRef Filename,
- std::unique_ptr<llvm::MemoryBuffer> Buffer) {
- auto Insertion =
- Buffers.insert({Filename, BufferEntry{std::move(Buffer), NextIndex++}});
- assert(Insertion.second && "Already has a buffer");
- return *Insertion.first->second.Buffer;
-}
-
-llvm::MemoryBuffer *MemoryBufferCache::lookupBuffer(llvm::StringRef Filename) {
- auto I = Buffers.find(Filename);
- if (I == Buffers.end())
- return nullptr;
- return I->second.Buffer.get();
-}
-
-bool MemoryBufferCache::isBufferFinal(llvm::StringRef Filename) {
- auto I = Buffers.find(Filename);
- if (I == Buffers.end())
- return false;
- return I->second.Index < FirstRemovableIndex;
-}
-
-bool MemoryBufferCache::tryToRemoveBuffer(llvm::StringRef Filename) {
- auto I = Buffers.find(Filename);
- assert(I != Buffers.end() && "No buffer to remove...");
- if (I->second.Index < FirstRemovableIndex)
- return true;
-
- Buffers.erase(I);
- return false;
-}
-
-void MemoryBufferCache::finalizeCurrentBuffers() { FirstRemovableIndex = NextIndex; }
#include "clang/AST/StmtVisitor.h"
#include "clang/AST/TypeOrdering.h"
#include "clang/Basic/Diagnostic.h"
-#include "clang/Basic/MemoryBufferCache.h"
#include "clang/Basic/TargetInfo.h"
#include "clang/Basic/TargetOptions.h"
#include "clang/Basic/VirtualFileSystem.h"
llvm::BitstreamWriter Stream;
ASTWriter Writer;
- ASTWriterData(MemoryBufferCache &PCMCache)
- : Stream(Buffer), Writer(Stream, Buffer, PCMCache, {}) {}
+ ASTWriterData() : Stream(Buffer), Writer(Stream, Buffer, {}) {}
};
void ASTUnit::clearFileLevelDecls() {
AST->SourceMgr = new SourceManager(AST->getDiagnostics(),
AST->getFileManager(),
UserFilesAreVolatile);
- AST->PCMCache = new MemoryBufferCache;
AST->HSOpts = std::make_shared<HeaderSearchOptions>();
AST->HSOpts->ModuleFormat = PCHContainerRdr.getFormat();
AST->HeaderInfo.reset(new HeaderSearch(AST->HSOpts,
AST->PP = std::make_shared<Preprocessor>(
std::move(PPOpts), AST->getDiagnostics(), AST->ASTFileLangOpts,
- AST->getSourceManager(), *AST->PCMCache, HeaderInfo, *AST,
+ AST->getSourceManager(), HeaderInfo, *AST,
/*IILookup=*/nullptr,
/*OwnsHeaderSearch=*/false);
Preprocessor &PP = *AST->PP;
AST->UserFilesAreVolatile = UserFilesAreVolatile;
AST->SourceMgr = new SourceManager(AST->getDiagnostics(), *AST->FileMgr,
UserFilesAreVolatile);
- AST->PCMCache = new MemoryBufferCache;
return AST;
}
if (!VFS)
return nullptr;
AST->FileMgr = new FileManager(AST->FileSystemOpts, VFS);
- AST->PCMCache = new MemoryBufferCache;
AST->OnlyLocalDecls = OnlyLocalDecls;
AST->CaptureDiagnostics = CaptureDiagnostics;
AST->TUKind = TUKind;
AST->StoredDiagnostics.swap(StoredDiagnostics);
AST->Invocation = CI;
if (ForSerialization)
- AST->WriterData.reset(new ASTWriterData(*AST->PCMCache));
+ AST->WriterData.reset(new ASTWriterData());
// Zero out now to ease cleanup during crash recovery.
CI = nullptr;
Diags = nullptr;
SmallString<128> Buffer;
llvm::BitstreamWriter Stream(Buffer);
- MemoryBufferCache PCMCache;
- ASTWriter Writer(Stream, Buffer, PCMCache, {});
+ ASTWriter Writer(Stream, Buffer, {});
return serializeUnit(Writer, Buffer, getSema(), hasErrors, OS);
}
#include "clang/AST/Decl.h"
#include "clang/Basic/Diagnostic.h"
#include "clang/Basic/FileManager.h"
-#include "clang/Basic/MemoryBufferCache.h"
#include "clang/Basic/SourceManager.h"
#include "clang/Basic/TargetInfo.h"
#include "clang/Basic/Version.h"
CompilerInstance::CompilerInstance(
std::shared_ptr<PCHContainerOperations> PCHContainerOps,
- MemoryBufferCache *SharedPCMCache)
- : ModuleLoader(/* BuildingModule = */ SharedPCMCache),
- Invocation(new CompilerInvocation()),
- PCMCache(SharedPCMCache ? SharedPCMCache : new MemoryBufferCache),
- ThePCHContainerOperations(std::move(PCHContainerOps)) {
- // Don't allow this to invalidate buffers in use by others.
- if (SharedPCMCache)
- getPCMCache().finalizeCurrentBuffers();
-}
+ bool BuildingModule)
+ : ModuleLoader(BuildingModule), Invocation(new CompilerInvocation()),
+ ThePCHContainerOperations(std::move(PCHContainerOps)) {}
CompilerInstance::~CompilerInstance() {
assert(OutputFiles.empty() && "Still output files in flight?");
return ModuleManager;
}
void CompilerInstance::setModuleManager(IntrusiveRefCntPtr<ASTReader> Reader) {
- assert(PCMCache.get() == &Reader->getModuleManager().getPCMCache() &&
- "Expected ASTReader to use the same PCM cache");
ModuleManager = std::move(Reader);
}
getDiagnostics(), getLangOpts(), &getTarget());
PP = std::make_shared<Preprocessor>(
Invocation->getPreprocessorOptsPtr(), getDiagnostics(), getLangOpts(),
- getSourceManager(), getPCMCache(), *HeaderInfo, *this, PTHMgr,
+ getSourceManager(), *HeaderInfo, *this, PTHMgr,
/*OwnsHeaderSearch=*/true, TUKind);
PP->Initialize(getTarget(), getAuxTarget());
Invocation->getModuleHash() && "Module hash mismatch!");
// Construct a compiler instance that will be used to actually create the
- // module. Since we're sharing a PCMCache,
- // CompilerInstance::CompilerInstance is responsible for finalizing the
- // buffers to prevent use-after-frees.
+ // module.
CompilerInstance Instance(ImportingInstance.getPCHContainerOperations(),
- &ImportingInstance.getPreprocessor().getPCMCache());
+ /*BuildingModule=*/true);
auto &Inv = *Invocation;
Instance.setInvocation(std::move(Invocation));
Preprocessor::Preprocessor(std::shared_ptr<PreprocessorOptions> PPOpts,
DiagnosticsEngine &diags, LangOptions &opts,
- SourceManager &SM, MemoryBufferCache &PCMCache,
- HeaderSearch &Headers, ModuleLoader &TheModuleLoader,
+ SourceManager &SM, HeaderSearch &Headers,
+ ModuleLoader &TheModuleLoader,
IdentifierInfoLookup *IILookup, bool OwnsHeaders,
TranslationUnitKind TUKind)
: PPOpts(std::move(PPOpts)), Diags(&diags), LangOpts(opts), Target(nullptr),
AuxTarget(nullptr), FileMgr(Headers.getFileMgr()), SourceMgr(SM),
- PCMCache(PCMCache), ScratchBuf(new ScratchBuffer(SourceMgr)),
- HeaderInfo(Headers), TheModuleLoader(TheModuleLoader),
- ExternalSource(nullptr), Identifiers(opts, IILookup),
+ ScratchBuf(new ScratchBuffer(SourceMgr)), HeaderInfo(Headers),
+ TheModuleLoader(TheModuleLoader), ExternalSource(nullptr),
+ Identifiers(opts, IILookup),
PragmaHandlers(new PragmaNamespace(StringRef())),
IncrementalProcessing(false), TUKind(TUKind), CodeComplete(nullptr),
CodeCompletionFile(nullptr), CodeCompletionOffset(0),
#include "clang/Basic/FileManager.h"
#include "clang/Basic/FileSystemOptions.h"
#include "clang/Basic/LangOptions.h"
-#include "clang/Basic/MemoryBufferCache.h"
#include "clang/Basic/ObjCRuntime.h"
#include "clang/Basic/OperatorKinds.h"
#include "clang/Basic/Sanitizers.h"
return checkDiagnosticGroupMappings(StoredDiags, Diags, Complain);
}
-/// Return the top import module if it is implicit, nullptr otherwise.
-static Module *getTopImportImplicitModule(ModuleManager &ModuleMgr,
- Preprocessor &PP) {
+bool PCHValidator::ReadDiagnosticOptions(
+ IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts, bool Complain) {
+ DiagnosticsEngine &ExistingDiags = PP.getDiagnostics();
+ IntrusiveRefCntPtr<DiagnosticIDs> DiagIDs(ExistingDiags.getDiagnosticIDs());
+ IntrusiveRefCntPtr<DiagnosticsEngine> Diags(
+ new DiagnosticsEngine(DiagIDs, DiagOpts.get()));
+ // This should never fail, because we would have processed these options
+ // before writing them to an ASTFile.
+ ProcessWarningOptions(*Diags, *DiagOpts, /*Report*/false);
+
+ ModuleManager &ModuleMgr = Reader.getModuleManager();
+ assert(ModuleMgr.size() >= 1 && "what ASTFile is this then");
+
// If the original import came from a file explicitly generated by the user,
// don't check the diagnostic mappings.
// FIXME: currently this is approximated by checking whether this is not a
while (!TopImport->ImportedBy.empty())
TopImport = TopImport->ImportedBy[0];
if (TopImport->Kind != MK_ImplicitModule)
- return nullptr;
+ return false;
StringRef ModuleName = TopImport->ModuleName;
assert(!ModuleName.empty() && "diagnostic options read before module name");
Module *M = PP.getHeaderSearchInfo().lookupModule(ModuleName);
assert(M && "missing module");
- return M;
-}
-
-bool PCHValidator::ReadDiagnosticOptions(
- IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts, bool Complain) {
- DiagnosticsEngine &ExistingDiags = PP.getDiagnostics();
- IntrusiveRefCntPtr<DiagnosticIDs> DiagIDs(ExistingDiags.getDiagnosticIDs());
- IntrusiveRefCntPtr<DiagnosticsEngine> Diags(
- new DiagnosticsEngine(DiagIDs, DiagOpts.get()));
- // This should never fail, because we would have processed these options
- // before writing them to an ASTFile.
- ProcessWarningOptions(*Diags, *DiagOpts, /*Report*/false);
-
- ModuleManager &ModuleMgr = Reader.getModuleManager();
- assert(ModuleMgr.size() >= 1 && "what ASTFile is this then");
-
- Module *TopM = getTopImportImplicitModule(ModuleMgr, PP);
- if (!TopM)
- return false;
// FIXME: if the diagnostics are incompatible, save a DiagnosticOptions that
// contains the union of their flags.
- return checkDiagnosticMappings(*Diags, ExistingDiags, TopM->IsSystem,
- Complain);
+ return checkDiagnosticMappings(*Diags, ExistingDiags, M->IsSystem, Complain);
}
/// \brief Collect the macro definitions provided by the given preprocessor
Listener.get(),
WasImportedBy ? false : HSOpts.ModulesValidateDiagnosticOptions);
- // If F was directly imported by another module, it's implicitly validated by
- // the importing module.
if (DisableValidation || WasImportedBy ||
(AllowConfigurationMismatch && Result == ConfigurationMismatch))
return Success;
- if (Result == Failure) {
+ if (Result == Failure)
Error("malformed block record in AST file");
- return Failure;
- }
-
- if (Result == OutOfDate && F.Kind == MK_ImplicitModule) {
- // If this module has already been finalized in the PCMCache, we're stuck
- // with it; we can only load a single version of each module.
- //
- // This can happen when a module is imported in two contexts: in one, as a
- // user module; in another, as a system module (due to an import from
- // another module marked with the [system] flag). It usually indicates a
- // bug in the module map: this module should also be marked with [system].
- //
- // If -Wno-system-headers (the default), and the first import is as a
- // system module, then validation will fail during the as-user import,
- // since -Werror flags won't have been validated. However, it's reasonable
- // to treat this consistently as a system module.
- //
- // If -Wsystem-headers, the PCM on disk was built with
- // -Wno-system-headers, and the first import is as a user module, then
- // validation will fail during the as-system import since the PCM on disk
- // doesn't guarantee that -Werror was respected. However, the -Werror
- // flags were checked during the initial as-user import.
- if (PCMCache.isBufferFinal(F.FileName)) {
- Diag(diag::warn_module_system_bit_conflict) << F.FileName;
- return Success;
- }
- }
return Result;
}
if (Listener && ValidateDiagnosticOptions &&
!AllowCompatibleConfigurationMismatch &&
ParseDiagnosticOptions(Record, Complain, *Listener))
- Result = OutOfDate; // Don't return early. Read the signature.
+ return OutOfDate;
break;
}
case DIAG_PRAGMA_MAPPINGS:
/// by heap-backed versus mmap'ed memory.
void ASTReader::getMemoryBufferSizes(MemoryBufferSizes &sizes) const {
for (ModuleFile &I : ModuleMgr) {
- if (llvm::MemoryBuffer *buf = I.Buffer) {
+ if (llvm::MemoryBuffer *buf = I.Buffer.get()) {
size_t bytes = buf->getBufferSize();
switch (buf->getBufferKind()) {
case llvm::MemoryBuffer::MemoryBuffer_Malloc:
: cast<ASTReaderListener>(new PCHValidator(PP, *this))),
SourceMgr(PP.getSourceManager()), FileMgr(PP.getFileManager()),
PCHContainerRdr(PCHContainerRdr), Diags(PP.getDiagnostics()), PP(PP),
- Context(Context),
- ModuleMgr(PP.getFileManager(), PP.getPCMCache(), PCHContainerRdr),
- PCMCache(PP.getPCMCache()), DummyIdResolver(PP),
- ReadTimer(std::move(ReadTimer)), isysroot(isysroot),
+ Context(Context), ModuleMgr(PP.getFileManager(), PCHContainerRdr),
+ DummyIdResolver(PP), ReadTimer(std::move(ReadTimer)), isysroot(isysroot),
DisableValidation(DisableValidation),
AllowASTWithCompilerErrors(AllowASTWithCompilerErrors),
AllowConfigurationMismatch(AllowConfigurationMismatch),
#include "clang/Basic/FileSystemOptions.h"
#include "clang/Basic/LLVM.h"
#include "clang/Basic/LangOptions.h"
-#include "clang/Basic/MemoryBufferCache.h"
#include "clang/Basic/Module.h"
#include "clang/Basic/ObjCRuntime.h"
#include "clang/Basic/SourceManager.h"
}
ASTWriter::ASTWriter(llvm::BitstreamWriter &Stream,
- SmallVectorImpl<char> &Buffer, MemoryBufferCache &PCMCache,
+ SmallVectorImpl<char> &Buffer,
ArrayRef<std::shared_ptr<ModuleFileExtension>> Extensions,
bool IncludeTimestamps)
- : Stream(Stream), Buffer(Buffer), PCMCache(PCMCache),
- IncludeTimestamps(IncludeTimestamps) {
+ : Stream(Stream), Buffer(Buffer), IncludeTimestamps(IncludeTimestamps) {
for (const auto &Ext : Extensions) {
if (auto Writer = Ext->createExtensionWriter(*this))
ModuleFileExtensionWriters.push_back(std::move(Writer));
this->BaseDirectory.clear();
WritingAST = false;
- if (SemaRef.Context.getLangOpts().ImplicitModules && WritingModule) {
- // Construct MemoryBuffer and update buffer manager.
- PCMCache.addBuffer(OutputFile,
- llvm::MemoryBuffer::getMemBufferCopy(
- StringRef(Buffer.begin(), Buffer.size())));
- }
return Signature;
}
bool AllowASTWithErrors, bool IncludeTimestamps)
: PP(PP), OutputFile(OutputFile), isysroot(isysroot.str()),
SemaPtr(nullptr), Buffer(Buffer), Stream(Buffer->Data),
- Writer(Stream, Buffer->Data, PP.getPCMCache(), Extensions,
- IncludeTimestamps),
+ Writer(Stream, Buffer->Data, Extensions, IncludeTimestamps),
AllowASTWithErrors(AllowASTWithErrors) {
Buffer->IsComplete = false;
}
//
//===----------------------------------------------------------------------===//
#include "clang/Serialization/ModuleManager.h"
-#include "clang/Basic/MemoryBufferCache.h"
#include "clang/Frontend/PCHContainerOperations.h"
#include "clang/Lex/HeaderSearch.h"
#include "clang/Lex/ModuleMap.h"
// Load the contents of the module
if (std::unique_ptr<llvm::MemoryBuffer> Buffer = lookupBuffer(FileName)) {
// The buffer was already provided for us.
- NewModule->Buffer = &PCMCache->addBuffer(FileName, std::move(Buffer));
- } else if (llvm::MemoryBuffer *Buffer = PCMCache->lookupBuffer(FileName)) {
- NewModule->Buffer = Buffer;
+ NewModule->Buffer = std::move(Buffer);
} else {
// Open the AST file.
llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buf((std::error_code()));
return Missing;
}
- NewModule->Buffer = &PCMCache->addBuffer(FileName, std::move(*Buf));
+ NewModule->Buffer = std::move(*Buf);
}
// Initialize the stream.
// Read the signature eagerly now so that we can check it. Avoid calling
// ReadSignature unless there's something to check though.
if (ExpectedSignature && checkSignature(ReadSignature(NewModule->Data),
- ExpectedSignature, ErrorStr)) {
- // Try to remove the buffer. If it can't be removed, then it was already
- // validated by this process.
- if (!PCMCache->tryToRemoveBuffer(NewModule->FileName))
- FileMgr.invalidateCache(NewModule->File);
+ ExpectedSignature, ErrorStr))
return OutOfDate;
- }
// We're keeping this module. Store it everywhere.
Module = Modules[Entry] = NewModule.get();
// Files that didn't make it through ReadASTCore successfully will be
// rebuilt (or there was an error). Invalidate them so that we can load the
// new files that will be renamed over the old ones.
- //
- // The PCMCache tracks whether the module was succesfully loaded in another
- // thread/context; in that case, it won't need to be rebuilt (and we can't
- // safely invalidate it anyway).
- if (LoadedSuccessfully.count(&*victim) == 0 &&
- !PCMCache->tryToRemoveBuffer(victim->FileName))
+ if (LoadedSuccessfully.count(&*victim) == 0)
FileMgr.invalidateCache(victim->File);
}
ModulesInCommonWithGlobalIndex.push_back(MF);
}
-ModuleManager::ModuleManager(FileManager &FileMgr, MemoryBufferCache &PCMCache,
+ModuleManager::ModuleManager(FileManager &FileMgr,
const PCHContainerReader &PCHContainerRdr)
- : FileMgr(FileMgr), PCMCache(&PCMCache), PCHContainerRdr(PCHContainerRdr),
- GlobalIndex(), FirstVisitState(nullptr) {}
+ : FileMgr(FileMgr), PCHContainerRdr(PCHContainerRdr), GlobalIndex(),
+ FirstVisitState(nullptr) {}
ModuleManager::~ModuleManager() { delete FirstVisitState; }
+++ /dev/null
-#import <Y.h>
+++ /dev/null
-#import <Y.h>
+++ /dev/null
-module X [system] {
- header "X.h" // imports Y
- export *
-}
-module Y {
- header "Y.h"
- export *
-}
-module Z {
- header "Z.h" // imports Y
- export *
-}
+++ /dev/null
-struct Mismatch { int i; };
+++ /dev/null
-#import "Mismatch.h"
-struct System { int i; };
+++ /dev/null
-module System [system] {
- header "System.h"
-}
-
-module Mismatch {
- header "Mismatch.h"
-}
+++ /dev/null
-// RUN: rm -rf %t.cache
-// RUN: echo "@import CoreText;" > %t.m
-// RUN: %clang_cc1 -fdisable-module-hash -fmodules-cache-path=%t.cache \
-// RUN: -fmodules -fimplicit-module-maps -I%S/Inputs/outofdate-rebuild %s \
-// RUN: -fsyntax-only
-// RUN: %clang_cc1 -DMISMATCH -Werror -fdisable-module-hash \
-// RUN: -fmodules-cache-path=%t.cache -fmodules -fimplicit-module-maps \
-// RUN: -I%S/Inputs/outofdate-rebuild %t.m -fsyntax-only
-// RUN: %clang_cc1 -fdisable-module-hash -fmodules-cache-path=%t.cache \
-// RUN: -fmodules -fimplicit-module-maps -I%S/Inputs/outofdate-rebuild %s \
-// RUN: -fsyntax-only
-
-// This testcase reproduces a use-after-free in when ModuleManager removes an
-// entry from the PCMCache without notifying its parent ASTReader.
-@import Cocoa;
+++ /dev/null
-// RUN: rm -rf %t.cache
-// RUN: echo '@import X;' | \
-// RUN: %clang_cc1 -fmodules -fimplicit-module-maps \
-// RUN: -fmodules-cache-path=%t.cache -I%S/Inputs/system-out-of-date \
-// RUN: -fsyntax-only -x objective-c -
-//
-// Build something with different diagnostic options.
-// RUN: %clang_cc1 -fmodules -fimplicit-module-maps \
-// RUN: -fmodules-cache-path=%t.cache -I%S/Inputs/system-out-of-date \
-// RUN: -fsyntax-only %s -Wnon-modular-include-in-framework-module \
-// RUN: -Werror=non-modular-include-in-framework-module 2>&1 \
-// RUN: | FileCheck %s
-@import X;
-
-#import <Z.h>
-// CHECK: While building module 'Z' imported from
-// CHECK: {{.*}}Y-{{.*}}pcm' was validated as a system module and is now being imported as a non-system module
+++ /dev/null
-// RUN: rm -rf %t.cache
-// RUN: echo "@import Mismatch;" >%t.m
-// RUN: %clang_cc1 -Wno-system-headers -fdisable-module-hash \
-// RUN: -fmodules-cache-path=%t.cache -fmodules -fimplicit-module-maps \
-// RUN: -I%S/Inputs/warning-mismatch %t.m -fsyntax-only
-// RUN: %clang_cc1 -Wsystem-headers -fdisable-module-hash \
-// RUN: -fmodules-cache-path=%t.cache -fmodules -fimplicit-module-maps \
-// RUN: -I%S/Inputs/warning-mismatch %s -fsyntax-only
-
-// This testcase triggers a warning flag mismatch in an already validated
-// header.
-@import Mismatch;
-@import System;
CharInfoTest.cpp
DiagnosticTest.cpp
FileManagerTest.cpp
- MemoryBufferCacheTest.cpp
SourceManagerTest.cpp
VirtualFileSystemTest.cpp
)
+++ /dev/null
-//===- MemoryBufferCacheTest.cpp - MemoryBufferCache tests ----------------===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "clang/Basic/MemoryBufferCache.h"
-#include "llvm/Support/MemoryBuffer.h"
-#include "gtest/gtest.h"
-
-using namespace llvm;
-using namespace clang;
-
-namespace {
-
-std::unique_ptr<MemoryBuffer> getBuffer(int I) {
- SmallVector<char, 8> Bytes;
- raw_svector_ostream(Bytes) << "data:" << I;
- return MemoryBuffer::getMemBuffer(StringRef(Bytes.data(), Bytes.size()));
-}
-
-TEST(MemoryBufferCacheTest, addBuffer) {
- auto B1 = getBuffer(1);
- auto B2 = getBuffer(2);
- auto B3 = getBuffer(3);
- auto *RawB1 = B1.get();
- auto *RawB2 = B2.get();
- auto *RawB3 = B3.get();
-
- // Add a few buffers.
- MemoryBufferCache Cache;
- EXPECT_EQ(RawB1, &Cache.addBuffer("1", std::move(B1)));
- EXPECT_EQ(RawB2, &Cache.addBuffer("2", std::move(B2)));
- EXPECT_EQ(RawB3, &Cache.addBuffer("3", std::move(B3)));
- EXPECT_EQ(RawB1, Cache.lookupBuffer("1"));
- EXPECT_EQ(RawB2, Cache.lookupBuffer("2"));
- EXPECT_EQ(RawB3, Cache.lookupBuffer("3"));
- EXPECT_FALSE(Cache.isBufferFinal("1"));
- EXPECT_FALSE(Cache.isBufferFinal("2"));
- EXPECT_FALSE(Cache.isBufferFinal("3"));
-
- // Remove the middle buffer.
- EXPECT_FALSE(Cache.tryToRemoveBuffer("2"));
- EXPECT_EQ(nullptr, Cache.lookupBuffer("2"));
- EXPECT_FALSE(Cache.isBufferFinal("2"));
-
- // Replace the middle buffer.
- B2 = getBuffer(2);
- ASSERT_NE(RawB2, B2.get());
- RawB2 = B2.get();
- EXPECT_EQ(RawB2, &Cache.addBuffer("2", std::move(B2)));
-
- // Check that nothing is final.
- EXPECT_FALSE(Cache.isBufferFinal("1"));
- EXPECT_FALSE(Cache.isBufferFinal("2"));
- EXPECT_FALSE(Cache.isBufferFinal("3"));
-}
-
-TEST(MemoryBufferCacheTest, finalizeCurrentBuffers) {
- // Add a buffer.
- MemoryBufferCache Cache;
- auto B1 = getBuffer(1);
- auto *RawB1 = B1.get();
- Cache.addBuffer("1", std::move(B1));
- ASSERT_FALSE(Cache.isBufferFinal("1"));
-
- // Finalize it.
- Cache.finalizeCurrentBuffers();
- EXPECT_TRUE(Cache.isBufferFinal("1"));
- EXPECT_TRUE(Cache.tryToRemoveBuffer("1"));
- EXPECT_EQ(RawB1, Cache.lookupBuffer("1"));
- EXPECT_TRUE(Cache.isBufferFinal("1"));
-
- // Repeat.
- auto B2 = getBuffer(2);
- auto *RawB2 = B2.get();
- Cache.addBuffer("2", std::move(B2));
- EXPECT_FALSE(Cache.isBufferFinal("2"));
-
- Cache.finalizeCurrentBuffers();
- EXPECT_TRUE(Cache.isBufferFinal("1"));
- EXPECT_TRUE(Cache.isBufferFinal("2"));
- EXPECT_TRUE(Cache.tryToRemoveBuffer("1"));
- EXPECT_TRUE(Cache.tryToRemoveBuffer("2"));
- EXPECT_EQ(RawB1, Cache.lookupBuffer("1"));
- EXPECT_EQ(RawB2, Cache.lookupBuffer("2"));
- EXPECT_TRUE(Cache.isBufferFinal("1"));
- EXPECT_TRUE(Cache.isBufferFinal("2"));
-}
-
-} // namespace
#include "clang/Basic/DiagnosticOptions.h"
#include "clang/Basic/FileManager.h"
#include "clang/Basic/LangOptions.h"
-#include "clang/Basic/MemoryBufferCache.h"
#include "clang/Basic/TargetInfo.h"
#include "clang/Basic/TargetOptions.h"
#include "clang/Lex/HeaderSearch.h"
SourceMgr.setMainFileID(mainFileID);
VoidModuleLoader ModLoader;
- MemoryBufferCache PCMCache;
HeaderSearch HeaderInfo(std::make_shared<HeaderSearchOptions>(), SourceMgr,
Diags, LangOpts, &*Target);
Preprocessor PP(std::make_shared<PreprocessorOptions>(), Diags, LangOpts,
- SourceMgr, PCMCache, HeaderInfo, ModLoader,
+ SourceMgr, HeaderInfo, ModLoader,
/*IILookup =*/nullptr,
/*OwnsHeaderSearch =*/false);
PP.Initialize(*Target);
SourceMgr.overrideFileContents(headerFile, std::move(HeaderBuf));
VoidModuleLoader ModLoader;
- MemoryBufferCache PCMCache;
HeaderSearch HeaderInfo(std::make_shared<HeaderSearchOptions>(), SourceMgr,
Diags, LangOpts, &*Target);
Preprocessor PP(std::make_shared<PreprocessorOptions>(), Diags, LangOpts,
- SourceMgr, PCMCache, HeaderInfo, ModLoader,
+ SourceMgr, HeaderInfo, ModLoader,
/*IILookup =*/nullptr,
/*OwnsHeaderSearch =*/false);
PP.Initialize(*Target);
SourceMgr.overrideFileContents(headerFile, std::move(HeaderBuf));
VoidModuleLoader ModLoader;
- MemoryBufferCache PCMCache;
HeaderSearch HeaderInfo(std::make_shared<HeaderSearchOptions>(), SourceMgr,
Diags, LangOpts, &*Target);
Preprocessor PP(std::make_shared<PreprocessorOptions>(), Diags, LangOpts,
- SourceMgr, PCMCache, HeaderInfo, ModLoader,
+ SourceMgr, HeaderInfo, ModLoader,
/*IILookup =*/nullptr,
/*OwnsHeaderSearch =*/false);
PP.Initialize(*Target);
#include "clang/Basic/DiagnosticOptions.h"
#include "clang/Basic/FileManager.h"
#include "clang/Basic/LangOptions.h"
-#include "clang/Basic/MemoryBufferCache.h"
#include "clang/Basic/SourceManager.h"
#include "clang/Basic/TargetInfo.h"
#include "clang/Basic/TargetOptions.h"
SourceMgr.setMainFileID(SourceMgr.createFileID(std::move(Buf)));
VoidModuleLoader ModLoader;
- MemoryBufferCache PCMCache;
HeaderSearch HeaderInfo(std::make_shared<HeaderSearchOptions>(), SourceMgr,
Diags, LangOpts, Target.get());
Preprocessor PP(std::make_shared<PreprocessorOptions>(), Diags, LangOpts,
- SourceMgr, PCMCache, HeaderInfo, ModLoader,
- /*IILookup =*/nullptr,
+ SourceMgr, HeaderInfo, ModLoader, /*IILookup =*/nullptr,
/*OwnsHeaderSearch =*/false);
PP.Initialize(*Target);
PP.EnterMainSourceFile();
#include "clang/Basic/DiagnosticOptions.h"
#include "clang/Basic/FileManager.h"
#include "clang/Basic/LangOptions.h"
-#include "clang/Basic/MemoryBufferCache.h"
#include "clang/Basic/SourceManager.h"
#include "clang/Basic/TargetInfo.h"
#include "clang/Basic/TargetOptions.h"
SourceMgr.setMainFileID(SourceMgr.createFileID(std::move(Buf)));
VoidModuleLoader ModLoader;
- MemoryBufferCache PCMCache;
HeaderSearch HeaderInfo(std::make_shared<HeaderSearchOptions>(), SourceMgr,
Diags, LangOpts, Target.get());
AddFakeHeader(HeaderInfo, HeaderPath, SystemHeader);
Preprocessor PP(std::make_shared<PreprocessorOptions>(), Diags, LangOpts,
- SourceMgr, PCMCache, HeaderInfo, ModLoader,
+ SourceMgr, HeaderInfo, ModLoader,
/*IILookup =*/nullptr,
/*OwnsHeaderSearch =*/false);
PP.Initialize(*Target);
SourceMgr.setMainFileID(SourceMgr.createFileID(std::move(SourceBuf)));
VoidModuleLoader ModLoader;
- MemoryBufferCache PCMCache;
HeaderSearch HeaderInfo(std::make_shared<HeaderSearchOptions>(), SourceMgr,
Diags, OpenCLLangOpts, Target.get());
Preprocessor PP(std::make_shared<PreprocessorOptions>(), Diags,
- OpenCLLangOpts, SourceMgr, PCMCache, HeaderInfo, ModLoader,
+ OpenCLLangOpts, SourceMgr, HeaderInfo, ModLoader,
/*IILookup =*/nullptr,
/*OwnsHeaderSearch =*/false);
PP.Initialize(*Target);
#include "clang/Basic/DiagnosticOptions.h"
#include "clang/Basic/FileManager.h"
#include "clang/Basic/LangOptions.h"
-#include "clang/Basic/MemoryBufferCache.h"
#include "clang/Basic/SourceManager.h"
#include "clang/Basic/TargetInfo.h"
#include "clang/Basic/TargetOptions.h"
SourceMgr.setMainFileID(SourceMgr.createFileID(std::move(Buf)));
VoidModuleLoader ModLoader;
- MemoryBufferCache PCMCache;
HeaderSearch HeaderInfo(std::make_shared<HeaderSearchOptions>(), SourceMgr,
Diags, LangOpts, Target.get());
Preprocessor PP(std::make_shared<PreprocessorOptions>(), Diags, LangOpts,
- SourceMgr, PCMCache, HeaderInfo, ModLoader,
+ SourceMgr, HeaderInfo, ModLoader,
/*IILookup =*/nullptr,
/*OwnsHeaderSearch =*/false);
PP.Initialize(*Target);
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