Hand out vtable structures for interface type descriptions. More...

#include <vtablefactory.hxx>

Classes
class	BaseOffset

struct	Block
	A raw vtable block. More...

class	GuardedBlocks

struct	Slot

struct	Vtables
	The vtable structure corresponding to an interface type. More...

Public Member Functions
	VtableFactory ()

	~VtableFactory ()

const Vtables &	getVtables (typelib_InterfaceTypeDescription *type)
	Given an interface type description, return its corresponding vtable structure. More...

Static Public Member Functions
static Slot *	mapBlockToVtable (void *block)
	Given a pointer to a block, turn it into a vtable pointer. More...

Private Types
typedef std::unordered_map< OUString, Vtables >	Map

Private Member Functions
	VtableFactory (VtableFactory const &)=delete

VtableFactory &	operator= (const VtableFactory &)=delete

bool	createBlock (Block &block, sal_Int32 slotCount) const

void	freeBlock (Block const &block) const

sal_Int32	createVtables (GuardedBlocks &blocks, BaseOffset const &baseOffset, typelib_InterfaceTypeDescription type, sal_Int32 vtableNumber, typelib_InterfaceTypeDescription mostDerived, bool includePrimary) const

Static Private Member Functions
static std::size_t	getBlockSize (sal_Int32 slotCount)
	Calculate the size of a raw vtable block. More...

static Slot *	initializeBlock (void block, sal_Int32 slotCount, sal_Int32 vtableNumber, typelib_InterfaceTypeDescription type)
	Initialize a raw vtable block. More...

static unsigned char *	addLocalFunctions (Slot *slots, unsigned char code, sal_PtrDiff writetoexecdiff, typelib_InterfaceTypeDescription const *type, sal_Int32 functionOffset, sal_Int32 functionCount, sal_Int32 vtableOffset)
	Fill the vtable slots corresponding to all local (i.e., not inherited) functions of a given interface type (and generate any necessary code snippets for them). More...

static void	flushCode (unsigned char const begin, unsigned char const end)
	Flush all the generated code snippets of a vtable, on platforms that require it. More...

Private Attributes
std::mutex	m_mutex

Map	m_map

rtl_arena_type *	m_arena

Friends
class	GuardedBlocks

Detailed Description

Hand out vtable structures for interface type descriptions.

Definition at line 42 of file vtablefactory.hxx.

Member Typedef Documentation

◆ Map

typedef std::unordered_map< OUString, Vtables > bridges::cpp_uno::shared::VtableFactory::Map

private

Definition at line 211 of file vtablefactory.hxx.

Constructor & Destructor Documentation

◆ VtableFactory() [1/2]

VtableFactory::VtableFactory ( )

Definition at line 203 of file vtablefactory.cxx.

References m_arena.

◆ ~VtableFactory()

VtableFactory::~VtableFactory ( )

Definition at line 214 of file vtablefactory.cxx.

References freeBlock(), m_arena, m_map, and m_mutex.

◆ VtableFactory() [2/2]

bridges::cpp_uno::shared::VtableFactory::VtableFactory ( VtableFactory const & )

privatedelete

Member Function Documentation

◆ addLocalFunctions()

unsigned char * bridges::cpp_uno::shared::VtableFactory::addLocalFunctions	(	Slot **	slots,
		unsigned char *	code,
		sal_PtrDiff	writetoexecdiff,
		typelib_InterfaceTypeDescription const *	type,
		sal_Int32	functionOffset,
		sal_Int32	functionCount,
		sal_Int32	vtableOffset
	)

staticprivate

Fill the vtable slots corresponding to all local (i.e., not inherited) functions of a given interface type (and generate any necessary code snippets for them).

Parameters

slots	on input, points past the vtable slot to be filled with the last virtual function local to the given type; on output, points to the vtable slot filled with the first virtual function local to the given type
code	points to the start of the area where code snippets can be generated
writetoexecdiff	when the same code area is mapped twice, once for writing for code-generation, and once for code-execution, then this records the offset from a writable address to its executable address
type	the interface type description for which to generate vtable slots
functionOffset	the function offset of the first vtable slot (typically coded into the code snippet for that vtable slot)
functionCount	the number of vtable slots to fill (the number of local functions of the given type, passed in so that it doesn't need to be recomputed)
vtableOffset	the offset of this vtable (needed to adjust the this pointer, typically coded into the code snippets for all the filled vtable slots)

Returns: a pointer to the remaining code snippet area

Definition at line 496 of file gcc3_ios/cpp2uno.cxx.

References code, codeSnippet(), i, and type.

Referenced by createVtables().

◆ createBlock()

bool VtableFactory::createBlock	(	Block &	block,
		sal_Int32	slotCount
	)		const

private

Definition at line 334 of file vtablefactory.cxx.

References getBlockSize(), m_arena, bridges::cpp_uno::shared::VtableFactory::Block::size, and bridges::cpp_uno::shared::VtableFactory::Block::start.

Referenced by createVtables().

◆ createVtables()

sal_Int32 VtableFactory::createVtables	(	GuardedBlocks &	blocks,
		BaseOffset const &	baseOffset,
		typelib_InterfaceTypeDescription *	type,
		sal_Int32	vtableNumber,
		typelib_InterfaceTypeDescription *	mostDerived,
		bool	includePrimary
	)		const

private

Definition at line 346 of file vtablefactory.cxx.

References addLocalFunctions(), code, createBlock(), createVtables(), bridges::cpp_uno::shared::VtableFactory::Block::exec, flushCode(), freeBlock(), bridges::cpp_uno::shared::VtableFactory::BaseOffset::getFunctionOffset(), bridges::cpp_uno::shared::getLocalFunctions(), bridges::cpp_uno::shared::getPrimaryFunctions(), i, initializeBlock(), bridges::cpp_uno::shared::VtableFactory::Block::start, type, and USE_DOUBLE_MMAP.

Referenced by createVtables(), and getVtables().

◆ flushCode()

void bridges::cpp_uno::shared::VtableFactory::flushCode	(	unsigned char const *	begin,
		unsigned char const *	end
	)

staticprivate

Flush all the generated code snippets of a vtable, on platforms that require it.

Parameters

begin	points to the start of the code snippet area
end	points behind the end of the code snippet area

Definition at line 544 of file gcc3_ios/cpp2uno.cxx.

Referenced by createVtables().

◆ freeBlock()

void VtableFactory::freeBlock ( Block const & block ) const

private

Definition at line 341 of file vtablefactory.cxx.

References m_arena, bridges::cpp_uno::shared::VtableFactory::Block::size, and bridges::cpp_uno::shared::VtableFactory::Block::start.

Referenced by createVtables(), bridges::cpp_uno::shared::VtableFactory::GuardedBlocks::~GuardedBlocks(), and ~VtableFactory().

◆ getBlockSize()

std::size_t bridges::cpp_uno::shared::VtableFactory::getBlockSize ( sal_Int32 slotCount )

staticprivate

Calculate the size of a raw vtable block.

Parameters

slotCount the number of virtual function slots the returned vtable block shall support (if there are any platform-specific slots, like an RTTI pointer, or a pointer to a destructor, they are not covered by slotCount)

Returns: the size of the raw vtable block, in bytes

Definition at line 473 of file gcc3_ios/cpp2uno.cxx.

Referenced by createBlock().

◆ getVtables()

const VtableFactory::Vtables & VtableFactory::getVtables ( typelib_InterfaceTypeDescription * type )

Given an interface type description, return its corresponding vtable structure.

Definition at line 226 of file vtablefactory.cxx.

References bridges::cpp_uno::shared::VtableFactory::Vtables::blocks, bridges::cpp_uno::shared::VtableFactory::Vtables::count, createVtables(), first, i, m_map, m_mutex, name, SAL_MAX_INT32, type, and bridges::cpp_uno::shared::VtableFactory::GuardedBlocks::unguard().

Referenced by bridges::cpp_uno::shared::CppInterfaceProxy::create().

◆ initializeBlock()

bridges::cpp_uno::shared::VtableFactory::Slot * bridges::cpp_uno::shared::VtableFactory::initializeBlock	(	void *	block,
		sal_Int32	slotCount,
		sal_Int32	vtableNumber,
		typelib_InterfaceTypeDescription *	type
	)

staticprivate

Initialize a raw vtable block.

Parameters

block	the start address of the raw vtable block
slotCount	the number of slots
vtableNumber	zero-based count across all the most derived type's vtables (for vtable's "offset to top" slot)
type	non-null most derived type (for vtable's "typeinfo pointer" slot)

Returns: a pointer past the last vtable slot

Definition at line 486 of file gcc3_ios/cpp2uno.cxx.

References bridges::cpp_uno::shared::VtableFactory::Slot::fn.

Referenced by createVtables().

◆ mapBlockToVtable()

bridges::cpp_uno::shared::VtableFactory::Slot * bridges::cpp_uno::shared::VtableFactory::mapBlockToVtable ( void * block )

static

Given a pointer to a block, turn it into a vtable pointer.

Definition at line 468 of file gcc3_ios/cpp2uno.cxx.

Referenced by bridges::cpp_uno::shared::CppInterfaceProxy::create().

◆ operator=()

VtableFactory & bridges::cpp_uno::shared::VtableFactory::operator= ( const VtableFactory & )

privatedelete

Friends And Related Function Documentation

◆ GuardedBlocks

friend class GuardedBlocks

friend

Definition at line 120 of file vtablefactory.hxx.

Member Data Documentation

◆ m_arena

rtl_arena_type* bridges::cpp_uno::shared::VtableFactory::m_arena

private

Definition at line 216 of file vtablefactory.hxx.

Referenced by createBlock(), freeBlock(), VtableFactory(), and ~VtableFactory().

◆ m_map

Map bridges::cpp_uno::shared::VtableFactory::m_map

private

Definition at line 214 of file vtablefactory.hxx.

Referenced by getVtables(), and ~VtableFactory().

◆ m_mutex

std::mutex bridges::cpp_uno::shared::VtableFactory::m_mutex

private

Definition at line 213 of file vtablefactory.hxx.

Referenced by getVtables(), and ~VtableFactory().

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

Classes

Public Member Functions

Static Public Member Functions

Private Types

Private Member Functions

Static Private Member Functions

Private Attributes

Friends

Detailed Description

Member Typedef Documentation

◆ Map

Constructor & Destructor Documentation

◆ VtableFactory() [1/2]

◆ ~VtableFactory()

◆ VtableFactory() [2/2]

Member Function Documentation

◆ addLocalFunctions()

◆ createBlock()

◆ createVtables()

◆ flushCode()

◆ freeBlock()

◆ getBlockSize()

◆ getVtables()

◆ initializeBlock()

◆ mapBlockToVtable()

◆ operator=()

Friends And Related Function Documentation

◆ GuardedBlocks

Member Data Documentation

◆ m_arena

◆ m_map

◆ m_mutex