#include <ManualDWARFIndex.h>

Inheritance diagram for lldb_private::ManualDWARFIndex:

Collaboration diagram for lldb_private::ManualDWARFIndex:

[legend]

Classes
struct	IndexSet

Public Member Functions
	ManualDWARFIndex (Module &module, SymbolFileDWARF &dwarf, llvm::DenseSet< dw_offset_t > units_to_avoid={})

void	Preload () override

void	GetGlobalVariables (ConstString basename, llvm::function_ref< bool(DWARFDIE die)> callback) override
	Finds global variables with the given base name. More...

void	GetGlobalVariables (const RegularExpression &regex, llvm::function_ref< bool(DWARFDIE die)> callback) override

void	GetGlobalVariables (DWARFUnit &unit, llvm::function_ref< bool(DWARFDIE die)> callback) override
	cu must be the skeleton unit if possible, not GetNonSkeletonUnit(). More...

void	GetObjCMethods (ConstString class_name, llvm::function_ref< bool(DWARFDIE die)> callback) override

void	GetCompleteObjCClass (ConstString class_name, bool must_be_implementation, llvm::function_ref< bool(DWARFDIE die)> callback) override

void	GetTypes (ConstString name, llvm::function_ref< bool(DWARFDIE die)> callback) override

void	GetTypes (const DWARFDeclContext &context, llvm::function_ref< bool(DWARFDIE die)> callback) override

void	GetNamespaces (ConstString name, llvm::function_ref< bool(DWARFDIE die)> callback) override

void	GetFunctions (ConstString name, SymbolFileDWARF &dwarf, const CompilerDeclContext &parent_decl_ctx, uint32_t name_type_mask, llvm::function_ref< bool(DWARFDIE die)> callback) override

void	GetFunctions (const RegularExpression &regex, llvm::function_ref< bool(DWARFDIE die)> callback) override

void	Dump (Stream &s) override

Public Member Functions inherited from lldb_private::DWARFIndex
	DWARFIndex (Module &module)

virtual	~DWARFIndex ()

StatsDuration::Duration	GetIndexTime ()

Private Member Functions
void	Index ()

bool	Decode (const DataExtractor &data, lldb::offset_t *offset_ptr, bool &signature_mismatch)
	Decode a serialized version of this object from data. More...

bool	Encode (DataEncoder &encoder) const
	Encode this object into a data encoder object. More...

std::string	GetCacheKey ()
	Get the cache key string for this symbol table. More...

void	SaveToCache ()
	Save the symbol table data out into a cache. More...

bool	LoadFromCache ()
	Load the symbol table from the index cache. More...

void	IndexUnit (DWARFUnit &unit, SymbolFileDWARFDwo *dwp, IndexSet &set)

Static Private Member Functions
static void	IndexUnitImpl (DWARFUnit &unit, const lldb::LanguageType cu_language, IndexSet &set)

Private Attributes
SymbolFileDWARF *	m_dwarf
	The DWARF file which we are indexing. More...

llvm::DenseSet< dw_offset_t >	m_units_to_avoid
	Which dwarf units should we skip while building the index. More...

IndexSet	m_set

bool	m_indexed = false

Additional Inherited Members
Protected Member Functions inherited from lldb_private::DWARFIndex
bool	ProcessFunctionDIE (llvm::StringRef name, DIERef ref, SymbolFileDWARF &dwarf, const CompilerDeclContext &parent_decl_ctx, uint32_t name_type_mask, llvm::function_ref< bool(DWARFDIE die)> callback)
	Helper function implementing common logic for processing function dies. More...

DIERefCallbackImpl	DIERefCallback (llvm::function_ref< bool(DWARFDIE die)> callback, llvm::StringRef name={}) const

void	ReportInvalidDIERef (DIERef ref, llvm::StringRef name) const

Protected Attributes inherited from lldb_private::DWARFIndex
Module &	m_module

StatsDuration	m_index_time

Detailed Description

Definition at line 20 of file ManualDWARFIndex.h.

Constructor & Destructor Documentation

◆ ManualDWARFIndex()

lldb_private::ManualDWARFIndex::ManualDWARFIndex	(	Module &	module,
		SymbolFileDWARF &	dwarf,
		llvm::DenseSet< dw_offset_t >	units_to_avoid = `{}`
	)

inline

Definition at line 22 of file ManualDWARFIndex.h.

Member Function Documentation

◆ Decode()

bool ManualDWARFIndex::Decode	(	const DataExtractor &	data,
		lldb::offset_t *	offset_ptr,
		bool &	signature_mismatch
	)

private

Decode a serialized version of this object from data.

Parameters

data	The decoder object that references the serialized data.
offset_ptr	A pointer that contains the offset from which the data will be decoded from that gets updated as data gets decoded.
strtab	All strings in cache files are put into string tables for efficiency and cache file size reduction. Strings are stored as uint32_t string table offsets in the cache data.

Definition at line 626 of file ManualDWARFIndex.cpp.

References lldb_private::CacheSignature::Decode(), and set().

◆ Dump()

void ManualDWARFIndex::Dump ( Stream & s )

overridevirtual

Implements lldb_private::DWARFIndex.

Definition at line 471 of file ManualDWARFIndex.cpp.

References lldb_private::Stream::Format(), and lldb_private::Stream::Printf().

◆ Encode()

bool ManualDWARFIndex::Encode ( DataEncoder & encoder ) const

private

Encode this object into a data encoder object.

This allows this object to be serialized to disk.

Parameters

encoder	A data encoder object that serialized bytes will be encoded into.
strtab	All strings in cache files are put into string tables for efficiency and cache file size reduction. Strings are stored as uint32_t string table offsets in the cache data.

Returns: True if the symbol table's object file can generate a valid signature and all data for the symbol table was encoded, false otherwise.

Definition at line 644 of file ManualDWARFIndex.cpp.

References lldb_private::CacheSignature::Encode().

◆ GetCacheKey()

std::string ManualDWARFIndex::GetCacheKey ( )

private

Get the cache key string for this symbol table.

The cache key must start with the module's cache key and is followed by information that indicates this key is for caching the symbol table contents and should also include the has of the object file. A module can be represented by an ObjectFile object for the main executable, but can also have a symbol file that is from the same or a different object file. This means we might have two symbol tables cached in the index cache, one for the main executable and one for the symbol file.

Returns: The unique cache key used to save and retrieve data from the index cache.

Definition at line 652 of file ManualDWARFIndex.cpp.

References lldb_private::ObjectFile::GetCacheHash(), lldb_private::ModuleChild::GetModule(), and string().

◆ GetCompleteObjCClass()

void ManualDWARFIndex::GetCompleteObjCClass	(	ConstString	class_name,
		bool	must_be_implementation,
		llvm::function_ref< bool(DWARFDIE die)>	callback
	)

overridevirtual

Implements lldb_private::DWARFIndex.

Definition at line 384 of file ManualDWARFIndex.cpp.

References lldb_private::ConstString::GetStringRef().

◆ GetFunctions() [1/2]

void ManualDWARFIndex::GetFunctions	(	const RegularExpression &	regex,
		llvm::function_ref< bool(DWARFDIE die)>	callback
	)

overridevirtual

Implements lldb_private::DWARFIndex.

Definition at line 458 of file ManualDWARFIndex.cpp.

References lldb_private::RegularExpression::GetText().

◆ GetFunctions() [2/2]

void ManualDWARFIndex::GetFunctions	(	ConstString	name,
		SymbolFileDWARF &	dwarf,
		const CompilerDeclContext &	parent_decl_ctx,
		uint32_t	name_type_mask,
		llvm::function_ref< bool(DWARFDIE die)>	callback
	)

overridevirtual

Implements lldb_private::DWARFIndex.

Definition at line 413 of file ManualDWARFIndex.cpp.

References SymbolFileDWARF::DIEInDeclContext(), lldb_private::ConstString::GetStringRef(), and lldb_private::CompilerDeclContext::IsValid().

◆ GetGlobalVariables() [1/3]

void ManualDWARFIndex::GetGlobalVariables	(	const RegularExpression &	regex,
		llvm::function_ref< bool(DWARFDIE die)>	callback
	)

overridevirtual

Implements lldb_private::DWARFIndex.

Definition at line 363 of file ManualDWARFIndex.cpp.

References lldb_private::RegularExpression::GetText().

◆ GetGlobalVariables() [2/3]

void ManualDWARFIndex::GetGlobalVariables	(	ConstString	basename,
		llvm::function_ref< bool(DWARFDIE die)>	callback
	)

overridevirtual

Finds global variables with the given base name.

Any additional filtering (e.g., to only retrieve variables from a given context) should be done by the consumer.

Implements lldb_private::DWARFIndex.

Definition at line 356 of file ManualDWARFIndex.cpp.

References lldb_private::ConstString::GetStringRef().

◆ GetGlobalVariables() [3/3]

void ManualDWARFIndex::GetGlobalVariables	(	DWARFUnit &	cu,
		llvm::function_ref< bool(DWARFDIE die)>	callback
	)

overridevirtual

cu must be the skeleton unit if possible, not GetNonSkeletonUnit().

Implements lldb_private::DWARFIndex.

Definition at line 370 of file ManualDWARFIndex.cpp.

References SymbolFileDWARF::GetDwoNum(), DWARFUnit::GetSymbolFileDWARF(), and lldbassert.

◆ GetNamespaces()

void ManualDWARFIndex::GetNamespaces	(	ConstString	name,
		llvm::function_ref< bool(DWARFDIE die)>	callback
	)

overridevirtual

Implements lldb_private::DWARFIndex.

Definition at line 407 of file ManualDWARFIndex.cpp.

References lldb_private::ConstString::GetStringRef().

◆ GetObjCMethods()

void ManualDWARFIndex::GetObjCMethods	(	ConstString	class_name,
		llvm::function_ref< bool(DWARFDIE die)>	callback
	)

overridevirtual

Implements lldb_private::DWARFIndex.

Definition at line 377 of file ManualDWARFIndex.cpp.

References lldb_private::ConstString::GetStringRef().

◆ GetTypes() [1/2]

void ManualDWARFIndex::GetTypes	(	const DWARFDeclContext &	context,
		llvm::function_ref< bool(DWARFDIE die)>	callback
	)

overridevirtual

Implements lldb_private::DWARFIndex.

Definition at line 398 of file ManualDWARFIndex.cpp.

◆ GetTypes() [2/2]

void ManualDWARFIndex::GetTypes	(	ConstString	name,
		llvm::function_ref< bool(DWARFDIE die)>	callback
	)

overridevirtual

Implements lldb_private::DWARFIndex.

Definition at line 392 of file ManualDWARFIndex.cpp.

References lldb_private::ConstString::GetStringRef().

◆ Index()

void ManualDWARFIndex::Index ( )

private

Definition at line 31 of file ManualDWARFIndex.cpp.

References NameToDIE::Append(), lldb_private::Stream::AsRawOstream(), DWARFDebugInfo::ContainsTypeUnits(), SymbolFileDWARF::DebugInfo(), lldb::eDescriptionLevelBrief, elapsed(), NameToDIE::Finalize(), lldb_private::StreamString::GetData(), SymbolFileDWARF::GetDwpSymbolFile(), DWARFDebugInfo::GetNumUnits(), DWARFUnit::GetOffset(), lldb_private::Debugger::GetThreadPool(), DWARFDebugInfo::GetUnitAtIndex(), lldb_private::Progress::Increment(), LLDB_SCOPED_TIMERF, and set().

Referenced by Preload().

◆ IndexUnit()

void ManualDWARFIndex::IndexUnit	(	DWARFUnit &	unit,
		SymbolFileDWARFDwo *	dwp,
		IndexSet &	set
	)

private

Definition at line 139 of file ManualDWARFIndex.cpp.

References DWARFUnit::GetDwoSymbolFile(), SymbolFileDWARF::GetLanguage(), lldb_private::GetLog(), DWARFUnit::GetNonSkeletonUnit(), DWARFDebugInfo::GetNumUnits(), DWARFUnit::GetOffset(), DWARFDebugInfo::GetUnitAtIndex(), lldb_private::Lookups, and set().

◆ IndexUnitImpl()

void ManualDWARFIndex::IndexUnitImpl	(	DWARFUnit &	unit,
		const lldb::LanguageType	cu_language,
		IndexSet &	set
	)

staticprivate

Definition at line 167 of file ManualDWARFIndex.cpp.

References DWARFFormValue::AsCString(), DWARFAttributes::AttributeAtIndex(), DWARFUnit::dies(), lldb::eLanguageTypeObjC, lldb::eLanguageTypeObjC_plus_plus, DWARFAttributes::ExtractFormValueAtIndex(), lldb_private::ObjCLanguage::MethodName::GetClassName(), lldb_private::ObjCLanguage::MethodName::GetClassNameWithCategory(), DWARFBaseDIE::GetDIERef(), lldb_private::ObjCLanguage::MethodName::GetFullNameWithoutCategory(), lldb_private::ObjCLanguage::MethodName::GetSelector(), DWARFDIE::IsMethod(), lldb_private::ObjCLanguage::MethodName::IsValid(), set(), and DWARFFormValue::Unsigned().

◆ LoadFromCache()

bool ManualDWARFIndex::LoadFromCache ( )

private

Load the symbol table from the index cache.

Quickly load the finalized symbol table from the index cache. This saves time when the debugger starts up. The index cache file for the symbol table has the modification time set to the same time as the main module. If the cache file exists and the modification times match, we will load the symbol table from the serlized cache file.

Returns: True if the symbol table was successfully loaded from the index cache, false if the symbol table wasn't cached or was out of date.

Definition at line 665 of file ManualDWARFIndex.cpp.

References lldb_private::ObjectFile::GetAddressByteSize(), lldb_private::DataFileCache::GetCachedData(), lldb_private::Module::GetIndexCache(), lldb_private::endian::InlHostByteOrder(), and lldb_private::DataFileCache::RemoveCacheFile().

◆ Preload()

void lldb_private::ManualDWARFIndex::Preload ( )

inlineoverridevirtual

Implements lldb_private::DWARFIndex.

Definition at line 27 of file ManualDWARFIndex.h.

References Index().

Referenced by lldb_private::DebugNamesDWARFIndex::Preload().

◆ SaveToCache()

void ManualDWARFIndex::SaveToCache ( )

private

Save the symbol table data out into a cache.

The symbol table will only be saved to a cache file if caching is enabled.

We cache the contents of the symbol table since symbol tables in LLDB take some time to initialize. This is due to the many sources for data that are used to create a symbol table:

standard symbol table
dynamic symbol table (ELF)
compressed debug info sections
unwind information
function pointers found in runtimes for global constructor/destructors
other sources. All of the above sources are combined and one symbol table results after all sources have been considered.

Definition at line 688 of file ManualDWARFIndex.cpp.

References lldb_private::ObjectFile::GetAddressByteSize(), lldb_private::Module::GetIndexCache(), lldb_private::endian::InlHostByteOrder(), and lldb_private::DataFileCache::SetCachedData().

Member Data Documentation

◆ m_dwarf

SymbolFileDWARF* lldb_private::ManualDWARFIndex::m_dwarf

private

The DWARF file which we are indexing.

Definition at line 169 of file ManualDWARFIndex.h.

◆ m_indexed

bool lldb_private::ManualDWARFIndex::m_indexed = false

private

Definition at line 174 of file ManualDWARFIndex.h.

◆ m_set

IndexSet lldb_private::ManualDWARFIndex::m_set

private

Definition at line 173 of file ManualDWARFIndex.h.

◆ m_units_to_avoid

llvm::DenseSet<dw_offset_t> lldb_private::ManualDWARFIndex::m_units_to_avoid

private

Which dwarf units should we skip while building the index.

Definition at line 171 of file ManualDWARFIndex.h.

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

Classes

Public Member Functions

Private Member Functions

Static Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ ManualDWARFIndex()

Member Function Documentation

◆ Decode()

◆ Dump()

◆ Encode()

◆ GetCacheKey()

◆ GetCompleteObjCClass()

◆ GetFunctions() [1/2]

◆ GetFunctions() [2/2]

◆ GetGlobalVariables() [1/3]

◆ GetGlobalVariables() [2/3]

◆ GetGlobalVariables() [3/3]

◆ GetNamespaces()

◆ GetObjCMethods()

◆ GetTypes() [1/2]

◆ GetTypes() [2/2]

◆ Index()

◆ IndexUnit()

◆ IndexUnitImpl()

◆ LoadFromCache()

◆ Preload()

◆ SaveToCache()

Member Data Documentation

◆ m_dwarf

◆ m_indexed

◆ m_set

◆ m_units_to_avoid