Manages the set of modules loaded by an AST reader. More...

#include "clang/Serialization/ModuleManager.h"

Public Types
enum	AddModuleResult { AlreadyLoaded , NewlyLoaded , Missing , OutOfDate }
	The result of attempting to add a new module. More...

using	ModuleIterator = llvm::pointee_iterator< SmallVectorImpl< std::unique_ptr< ModuleFile > >::iterator >

using	ModuleConstIterator = llvm::pointee_iterator< SmallVectorImpl< std::unique_ptr< ModuleFile > >::const_iterator >

using	ModuleReverseIterator = llvm::pointee_iterator< SmallVectorImpl< std::unique_ptr< ModuleFile > >::reverse_iterator >

using	ModuleOffset = std::pair< uint32_t, StringRef >

using	ASTFileSignatureReader = ASTFileSignature(*)(StringRef)

Public Member Functions
	ModuleManager (FileManager &FileMgr, InMemoryModuleCache &ModuleCache, const PCHContainerReader &PCHContainerRdr, const HeaderSearch &HeaderSearchInfo)

ModuleIterator	begin ()
	Forward iterator to traverse all loaded modules.

ModuleIterator	end ()
	Forward iterator end-point to traverse all loaded modules.

ModuleConstIterator	begin () const
	Const forward iterator to traverse all loaded modules.

ModuleConstIterator	end () const
	Const forward iterator end-point to traverse all loaded modules.

ModuleReverseIterator	rbegin ()
	Reverse iterator to traverse all loaded modules.

ModuleReverseIterator	rend ()
	Reverse iterator end-point to traverse all loaded modules.

llvm::iterator_range< SmallVectorImpl< ModuleFile * >::const_iterator >	pch_modules () const
	A range covering the PCH and preamble module files loaded.

ModuleFile &	getPrimaryModule ()
	Returns the primary module associated with the manager, that is, the first module loaded.

ModuleFile &	getPrimaryModule () const
	Returns the primary module associated with the manager, that is, the first module loaded.

ModuleFile &	operator[] (unsigned Index) const
	Returns the module associated with the given index.

ModuleFile *	lookupByFileName (StringRef FileName) const
	Returns the module associated with the given file name.

ModuleFile *	lookupByModuleName (StringRef ModName) const
	Returns the module associated with the given module name.

ModuleFile *	lookup (const FileEntry *File) const
	Returns the module associated with the given module file.

std::unique_ptr< llvm::MemoryBuffer >	lookupBuffer (StringRef Name)
	Returns the in-memory (virtual file) buffer with the given name.

unsigned	size () const
	Number of modules loaded.

AddModuleResult	addModule (StringRef FileName, ModuleKind Type, SourceLocation ImportLoc, ModuleFile ImportedBy, unsigned Generation, off_t ExpectedSize, time_t ExpectedModTime, ASTFileSignature ExpectedSignature, ASTFileSignatureReader ReadSignature, ModuleFile &Module, std::string &ErrorStr)
	Attempts to create a new module and add it to the list of known modules.

void	removeModules (ModuleIterator First)
	Remove the modules starting from First (to the end).

void	addInMemoryBuffer (StringRef FileName, std::unique_ptr< llvm::MemoryBuffer > Buffer)
	Add an in-memory buffer the list of known buffers.

void	setGlobalIndex (GlobalModuleIndex *Index)
	Set the global module index.

void	moduleFileAccepted (ModuleFile *MF)
	Notification from the AST reader that the given module file has been "accepted", and will not (can not) be unloaded.

void	visit (llvm::function_ref< bool(ModuleFile &M)> Visitor, llvm::SmallPtrSetImpl< ModuleFile * > *ModuleFilesHit=nullptr)
	Visit each of the modules.

bool	lookupModuleFile (StringRef FileName, off_t ExpectedSize, time_t ExpectedModTime, OptionalFileEntryRef &File)
	Attempt to resolve the given module file name to a file entry.

void	viewGraph ()
	View the graphviz representation of the module graph.

InMemoryModuleCache &	getModuleCache () const

Detailed Description

Manages the set of modules loaded by an AST reader.

Definition at line 47 of file ModuleManager.h.

Member Typedef Documentation

◆ ASTFileSignatureReader

using clang::serialization::ModuleManager::ASTFileSignatureReader = ASTFileSignature (*)(StringRef)

Definition at line 206 of file ModuleManager.h.

◆ ModuleConstIterator

using clang::serialization::ModuleManager::ModuleConstIterator = llvm::pointee_iterator< SmallVectorImpl<std::unique_ptr<ModuleFile> >::const_iterator>

Definition at line 131 of file ModuleManager.h.

◆ ModuleIterator

using clang::serialization::ModuleManager::ModuleIterator = llvm::pointee_iterator< SmallVectorImpl<std::unique_ptr<ModuleFile> >::iterator>

Definition at line 129 of file ModuleManager.h.

◆ ModuleOffset

using clang::serialization::ModuleManager::ModuleOffset = std::pair<uint32_t, StringRef>

Definition at line 135 of file ModuleManager.h.

◆ ModuleReverseIterator

using clang::serialization::ModuleManager::ModuleReverseIterator = llvm::pointee_iterator< SmallVectorImpl<std::unique_ptr<ModuleFile> >::reverse_iterator>

Definition at line 133 of file ModuleManager.h.

Member Enumeration Documentation

◆ AddModuleResult

enum clang::serialization::ModuleManager::AddModuleResult

The result of attempting to add a new module.

Enumerator
AlreadyLoaded	The module file had already been loaded.
NewlyLoaded	The module file was just loaded in response to this call.
Missing	The module file is missing.
OutOfDate	The module file is out-of-date.

Definition at line 192 of file ModuleManager.h.

Constructor & Destructor Documentation

◆ ModuleManager()

ModuleManager::ModuleManager	(	FileManager &	FileMgr,
		InMemoryModuleCache &	ModuleCache,
		const PCHContainerReader &	PCHContainerRdr,
		const HeaderSearch &	HeaderSearchInfo
	)

explicit

Definition at line 337 of file ModuleManager.cpp.

Member Function Documentation

◆ addInMemoryBuffer()

void ModuleManager::addInMemoryBuffer	(	StringRef	FileName,
		std::unique_ptr< llvm::MemoryBuffer >	Buffer
	)

Add an in-memory buffer the list of known buffers.

Definition at line 291 of file ModuleManager.cpp.

References clang::FileManager::getVirtualFile().

Referenced by clang::ASTReader::addInMemoryBuffer().

◆ addModule()

ModuleManager::AddModuleResult ModuleManager::addModule	(	StringRef	FileName,
		ModuleKind	Type,
		SourceLocation	ImportLoc,
		ModuleFile *	ImportedBy,
		unsigned	Generation,
		off_t	ExpectedSize,
		time_t	ExpectedModTime,
		ASTFileSignature	ExpectedSignature,
		ASTFileSignatureReader	ReadSignature,
		ModuleFile *&	Module,
		std::string &	ErrorStr
	)

Attempts to create a new module and add it to the list of known modules.

Parameters

FileName	The file name of the module to be loaded.
Type	The kind of module being loaded.
ImportLoc	The location at which the module is imported.
ImportedBy	The module that is importing this module, or NULL if this module is imported directly by the user.
Generation	The generation in which this module was loaded.
ExpectedSize	The expected size of the module file, used for validation. This will be zero if unknown.
ExpectedModTime	The expected modification time of the module file, used for validation. This will be zero if unknown.
ExpectedSignature	The expected signature of the module file, used for validation. This will be zero if unknown.
ReadSignature	Reads the signature from an AST file without actually loading it.
Module	A pointer to the module file if the module was successfully loaded.
ErrorStr	Will be set to a non-empty string if any errors occurred while trying to load the module.

Returns: A pointer to the module that corresponds to this file name, and a value indicating whether the module was loaded.

Definition at line 103 of file ModuleManager.cpp.

References clang::InMemoryModuleCache::addPCM(), AlreadyLoaded, checkSignature(), clang::PCHContainerReader::ExtractPCH(), clang::FileManager::getBufferForFile(), getModuleCache(), clang::FileManager::getNoncachedStatValue(), lookupBuffer(), lookupModuleFile(), Missing, clang::serialization::MK_ExplicitModule, clang::serialization::MK_ImplicitModule, clang::serialization::MK_PrebuiltModule, NewlyLoaded, OutOfDate, and updateModuleImports().

◆ begin() [1/2]

ModuleIterator clang::serialization::ModuleManager::begin ( )

inline

Forward iterator to traverse all loaded modules.

Definition at line 142 of file ModuleManager.h.

Referenced by llvm::GraphTraits< ModuleManager >::nodes_begin(), and removeModules().

◆ begin() [2/2]

ModuleConstIterator clang::serialization::ModuleManager::begin ( ) const

inline

Const forward iterator to traverse all loaded modules.

Definition at line 148 of file ModuleManager.h.

◆ end() [1/2]

ModuleIterator clang::serialization::ModuleManager::end ( )

inline

Forward iterator end-point to traverse all loaded modules.

Definition at line 145 of file ModuleManager.h.

Referenced by llvm::GraphTraits< ModuleManager >::nodes_end(), and removeModules().

◆ end() [2/2]

ModuleConstIterator clang::serialization::ModuleManager::end ( ) const

inline

Const forward iterator end-point to traverse all loaded modules.

Definition at line 151 of file ModuleManager.h.

◆ getModuleCache()

InMemoryModuleCache & clang::serialization::ModuleManager::getModuleCache ( ) const

inline

Definition at line 310 of file ModuleManager.h.

Referenced by addModule().

◆ getPrimaryModule() [1/2]

ModuleFile & clang::serialization::ModuleManager::getPrimaryModule ( )

inline

Returns the primary module associated with the manager, that is, the first module loaded.

Definition at line 167 of file ModuleManager.h.

Referenced by clang::FrontendAction::BeginSourceFile(), clang::DumpModuleInfoAction::ExecuteAction(), clang::ASTReader::getOriginalSourceFile(), and clang::ASTReader::getSourceDescriptor().

◆ getPrimaryModule() [2/2]

ModuleFile & clang::serialization::ModuleManager::getPrimaryModule ( ) const

inline

Returns the primary module associated with the manager, that is, the first module loaded.

Definition at line 171 of file ModuleManager.h.

◆ lookup()

ModuleFile * ModuleManager::lookup ( const FileEntry * File ) const

Returns the module associated with the given module file.

Definition at line 61 of file ModuleManager.cpp.

References clang::File.

Referenced by lookupByFileName(), and lookupByModuleName().

◆ lookupBuffer()

std::unique_ptr< llvm::MemoryBuffer > ModuleManager::lookupBuffer ( StringRef Name )

Returns the in-memory (virtual file) buffer with the given name.

Definition at line 70 of file ModuleManager.cpp.

References clang::FileManager::getFile().

Referenced by addModule().

◆ lookupByFileName()

ModuleFile * ModuleManager::lookupByFileName ( StringRef FileName ) const

Returns the module associated with the given file name.

Definition at line 44 of file ModuleManager.cpp.

References clang::FileManager::getFile(), and lookup().

◆ lookupByModuleName()

ModuleFile * ModuleManager::lookupByModuleName ( StringRef ModName ) const

Returns the module associated with the given module name.

Definition at line 53 of file ModuleManager.cpp.

References clang::File, clang::ModuleMap::findModule(), clang::HeaderSearch::getModuleMap(), and lookup().

◆ lookupModuleFile()

bool ModuleManager::lookupModuleFile	(	StringRef	FileName,
		off_t	ExpectedSize,
		time_t	ExpectedModTime,
		OptionalFileEntryRef &	File
	)

Attempt to resolve the given module file name to a file entry.

Parameters

FileName	The name of the module file.
ExpectedSize	The size that the module file is expected to have. If the actual size differs, the resolver should return `true`.
ExpectedModTime	The modification time that the module file is expected to have. If the actual modification time differs, the resolver should return `true`.
File	Will be set to the file if there is one, or null otherwise.

Returns: True if a file exists but does not meet the size/ modification time criteria, false if the file is either available and suitable, or is missing.

Definition at line 445 of file ModuleManager.cpp.

References clang::File, and clang::FileManager::getFileRef().

Referenced by addModule().

◆ moduleFileAccepted()

void ModuleManager::moduleFileAccepted ( ModuleFile * MF )

Notification from the AST reader that the given module file has been "accepted", and will not (can not) be unloaded.

Definition at line 330 of file ModuleManager.cpp.

References clang::GlobalModuleIndex::loadedModuleFile().

◆ operator[]()

ModuleFile & clang::serialization::ModuleManager::operator[] ( unsigned Index ) const

inline

Returns the module associated with the given index.

Definition at line 174 of file ModuleManager.h.

◆ pch_modules()

llvm::iterator_range< SmallVectorImpl< ModuleFile * >::const_iterator > clang::serialization::ModuleManager::pch_modules ( ) const

inline

A range covering the PCH and preamble module files loaded.

Definition at line 161 of file ModuleManager.h.

Referenced by clang::ASTReader::getLocalModuleFile(), clang::ASTReader::getModuleFileID(), and clang::ASTReader::getSourceDescriptor().

◆ rbegin()

ModuleReverseIterator clang::serialization::ModuleManager::rbegin ( )

inline

Reverse iterator to traverse all loaded modules.

Definition at line 154 of file ModuleManager.h.

Referenced by getTopImportImplicitModule().

◆ removeModules()

void ModuleManager::removeModules ( ModuleIterator First )

Remove the modules starting from First (to the end).

Definition at line 252 of file ModuleManager.cpp.

References begin(), end(), clang::First, and clang::Last.

◆ rend()

ModuleReverseIterator clang::serialization::ModuleManager::rend ( )

inline

Reverse iterator end-point to traverse all loaded modules.

Definition at line 157 of file ModuleManager.h.

◆ setGlobalIndex()

void ModuleManager::setGlobalIndex ( GlobalModuleIndex * Index )

Set the global module index.

Definition at line 316 of file ModuleManager.cpp.

References clang::GlobalModuleIndex::loadedModuleFile().

◆ size()

unsigned clang::serialization::ModuleManager::size ( ) const

inline

Number of modules loaded.

Definition at line 189 of file ModuleManager.h.

Referenced by clang::PCHValidator::ReadDiagnosticOptions(), and visit().

◆ viewGraph()

void ModuleManager::viewGraph ( )

View the graphviz representation of the module graph.

Definition at line 511 of file ModuleManager.cpp.

◆ visit()

void ModuleManager::visit	(	llvm::function_ref< bool(ModuleFile &M)>	Visitor,
		llvm::SmallPtrSetImpl< ModuleFile * > *	ModuleFilesHit = `nullptr`
	)

Visit each of the modules.

This routine visits each of the modules, starting with the "root" modules that no other loaded modules depend on, and proceeding to the leaf modules, visiting each module only once during the traversal.

This traversal is intended to support various "lookup" operations that can find data in any of the loaded modules.

Parameters

Visitor	A visitor function that will be invoked with each module. The return value must be convertible to bool; when false, the visitation continues to modules that the current module depends on. When true, the visitation skips any modules that the current module depends on.
ModuleFilesHit	If non-NULL, contains the set of module files that we know we need to visit because the global module index told us to. Any module that is known to both the global module index and the module manager that is not in this set can be skipped.

Definition at line 344 of file ModuleManager.cpp.

References clang::serialization::ModuleFile::ImportedBy, clang::serialization::ModuleFile::Imports, clang::serialization::ModuleFile::Index, and size().

Referenced by clang::ASTReader::ReadMethodPool().

The documentation for this class was generated from the following files:

include/clang/Serialization/ModuleManager.h
lib/Serialization/ModuleManager.cpp

Public Types

Public Member Functions

Detailed Description

Member Typedef Documentation

◆ ASTFileSignatureReader

◆ ModuleConstIterator

◆ ModuleIterator

◆ ModuleOffset

◆ ModuleReverseIterator

Member Enumeration Documentation

◆ AddModuleResult

Constructor & Destructor Documentation

◆ ModuleManager()

Member Function Documentation

◆ addInMemoryBuffer()

◆ addModule()

◆ begin() [1/2]

◆ begin() [2/2]

◆ end() [1/2]

◆ end() [2/2]

◆ getModuleCache()

◆ getPrimaryModule() [1/2]

◆ getPrimaryModule() [2/2]

◆ lookup()

◆ lookupBuffer()

◆ lookupByFileName()

◆ lookupByModuleName()

◆ lookupModuleFile()

◆ moduleFileAccepted()

◆ operator[]()

◆ pch_modules()

◆ rbegin()

◆ removeModules()

◆ rend()

◆ setGlobalIndex()

◆ size()

◆ viewGraph()

◆ visit()