#include "llvm/ExecutionEngine/Orc/MemoryMapper.h"

Inheritance diagram for llvm::orc::InProcessMemoryMapper:

Public Member Functions
	InProcessMemoryMapper (size_t PageSize)
unsigned int	getPageSize () override
void	reserve (size_t NumBytes, OnReservedFunction OnReserved) override
	Reserves address space in executor process.
void	initialize (AllocInfo &AI, OnInitializedFunction OnInitialized) override
	Ensures executor memory is synchronized with working copy memory, sends functions to be called after initilization and before deinitialization and applies memory protections Returns a unique address identifying the allocation.
char *	prepare (jitlink::LinkGraph &G, ExecutorAddr Addr, size_t ContentSize) override
	Provides working memory The LinkGraph parameter is included to allow implementations to allocate working memory from the LinkGraph's allocator, in which case it will be deallocated when the LinkGraph is destroyed.
void	deinitialize (ArrayRef< ExecutorAddr > Allocations, OnDeinitializedFunction OnDeInitialized) override
	Runs previously specified deinitialization actions Executor addresses returned by initialize should be passed.
void	release (ArrayRef< ExecutorAddr > Reservations, OnReleasedFunction OnRelease) override
	Release address space acquired through reserve()
	~InProcessMemoryMapper () override
Public Member Functions inherited from llvm::orc::MemoryMapper
virtual	~MemoryMapper ()

Static Public Member Functions
static Expected< std::unique_ptr< InProcessMemoryMapper > >	Create ()

Additional Inherited Members
Public Types inherited from llvm::orc::MemoryMapper
using	OnReservedFunction = unique_function<void(Expected<ExecutorAddrRange>)>
using	OnInitializedFunction = unique_function<void(Expected<ExecutorAddr>)>
using	OnDeinitializedFunction = unique_function<void(Error)>
using	OnReleasedFunction = unique_function<void(Error)>

Detailed Description

Definition at line 87 of file MemoryMapper.h.

Constructor & Destructor Documentation

◆ InProcessMemoryMapper()

llvm::orc::InProcessMemoryMapper::InProcessMemoryMapper ( size_t PageSize )

Definition at line 32 of file MemoryMapper.cpp.

◆ ~InProcessMemoryMapper()

llvm::orc::InProcessMemoryMapper::~InProcessMemoryMapper ( )

override

Definition at line 178 of file MemoryMapper.cpp.

References llvm::cantFail(), F, llvm::orc::ExecutorAddr::fromPtr(), P, and llvm::release.

Member Function Documentation

◆ Create()

Expected< std::unique_ptr< InProcessMemoryMapper > > llvm::orc::InProcessMemoryMapper::Create ( )

static

Definition at line 36 of file MemoryMapper.cpp.

References llvm::sys::Process::getPageSize().

◆ deinitialize()

void llvm::orc::InProcessMemoryMapper::deinitialize	(	ArrayRef< ExecutorAddr >	Allocations,
		OnDeinitializedFunction	OnDeInitialized )

overridevirtual

Runs previously specified deinitialization actions Executor addresses returned by initialize should be passed.

Implements llvm::orc::MemoryMapper.

Definition at line 111 of file MemoryMapper.cpp.

References llvm::sampleprof::Base, llvm::errorCodeToError(), llvm::joinErrors(), llvm::sys::Memory::MF_READ, llvm::sys::Memory::MF_WRITE, llvm::sys::Memory::protectMappedMemory(), llvm::reverse(), llvm::orc::shared::runDeallocActions(), Size, and llvm::Error::success().

Referenced by release().

◆ getPageSize()

unsigned int llvm::orc::InProcessMemoryMapper::getPageSize ( )

inlineoverridevirtual

Implements llvm::orc::MemoryMapper.

Definition at line 93 of file MemoryMapper.h.

◆ initialize()

void llvm::orc::InProcessMemoryMapper::initialize	(	AllocInfo &	AI,
		OnInitializedFunction	OnInitialized )

overridevirtual

Ensures executor memory is synchronized with working copy memory, sends functions to be called after initilization and before deinitialization and applies memory protections Returns a unique address identifying the allocation.

This address should be passed to deinitialize to run deallocation actions (and reset permissions where possible).

Implements llvm::orc::MemoryMapper.

Definition at line 66 of file MemoryMapper.cpp.

References llvm::orc::MemoryMapper::AllocInfo::Actions, llvm::Alloc, llvm::sampleprof::Base, llvm::errorCodeToError(), llvm::orc::Exec, llvm::sys::Memory::InvalidateInstructionCache(), llvm::orc::MemoryMapper::AllocInfo::MappingBase, llvm::sys::Memory::protectMappedMemory(), llvm::orc::shared::runFinalizeActions(), llvm::orc::MemoryMapper::AllocInfo::Segments, Size, llvm::orc::ExecutorAddr::toPtr(), and llvm::orc::toSysMemoryProtectionFlags().

◆ prepare()

char * llvm::orc::InProcessMemoryMapper::prepare	(	jitlink::LinkGraph &	G,
		ExecutorAddr	Addr,
		size_t	ContentSize )

overridevirtual

Provides working memory The LinkGraph parameter is included to allow implementations to allocate working memory from the LinkGraph's allocator, in which case it will be deallocated when the LinkGraph is destroyed.

Implements llvm::orc::MemoryMapper.

Definition at line 61 of file MemoryMapper.cpp.

References G, and llvm::orc::ExecutorAddr::toPtr().