llvm::jitlink::InProcessMemoryManager Class Reference

A JITLinkMemoryManager that allocates in-process memory. More...

#include "llvm/ExecutionEngine/JITLink/JITLinkMemoryManager.h"

Inheritance diagram for llvm::jitlink::InProcessMemoryManager:

Classes
class	IPInFlightAlloc

Public Member Functions
	InProcessMemoryManager (uint64_t PageSize)
	Create an instance using the given page size.
void	allocate (const JITLinkDylib *JD, LinkGraph &G, OnAllocatedFunction OnAllocated) override
	Start the allocation process.
void	deallocate (std::vector< FinalizedAlloc > Alloc, OnDeallocatedFunction OnDeallocated) override
	Deallocate a list of allocation objects.
AllocResult	allocate (const JITLinkDylib *JD, LinkGraph &G)
	Convenience function for blocking allocation.
void	deallocate (FinalizedAlloc Alloc, OnDeallocatedFunction OnDeallocated)
	Convenience function for deallocation of a single alloc.
Error	deallocate (std::vector< FinalizedAlloc > Allocs)
	Convenience function for blocking deallocation.
Error	deallocate (FinalizedAlloc Alloc)
	Convenience function for blocking deallocation of a single alloc.
Public Member Functions inherited from llvm::jitlink::JITLinkMemoryManager
virtual	~JITLinkMemoryManager ()
AllocResult	allocate (const JITLinkDylib *JD, LinkGraph &G)
	Convenience function for blocking allocation.
void	deallocate (FinalizedAlloc Alloc, OnDeallocatedFunction OnDeallocated)
	Convenience function for deallocation of a single alloc.
Error	deallocate (std::vector< FinalizedAlloc > Allocs)
	Convenience function for blocking deallocation.
Error	deallocate (FinalizedAlloc Alloc)
	Convenience function for blocking deallocation of a single alloc.

Static Public Member Functions
static Expected< std::unique_ptr< InProcessMemoryManager > >	Create ()
	Attempts to auto-detect the host page size.

Additional Inherited Members
Public Types inherited from llvm::jitlink::JITLinkMemoryManager
using	AllocResult = Expected<std::unique_ptr<InFlightAlloc>>
	Typedef for the argument to be passed to OnAllocatedFunction.
using	OnAllocatedFunction = unique_function<void(AllocResult)>
	Called when allocation has been completed.
using	OnDeallocatedFunction = unique_function<void(Error)>
	Called when deallocation has completed.

Detailed Description

A JITLinkMemoryManager that allocates in-process memory.

Definition at line 363 of file JITLinkMemoryManager.h.

Constructor & Destructor Documentation

InProcessMemoryManager()

llvm::jitlink::InProcessMemoryManager::InProcessMemoryManager ( uint64_t PageSize )

inline

Create an instance using the given page size.

Definition at line 371 of file JITLinkMemoryManager.h.

References assert(), and llvm::isPowerOf2_64().

Referenced by llvm::jitlink::InProcessMemoryManager::IPInFlightAlloc::IPInFlightAlloc().

Member Function Documentation

allocate() [1/2]

AllocResult llvm::jitlink::JITLinkMemoryManager::allocate ( const JITLinkDylib * JD, LinkGraph & G )

inline

Convenience function for blocking allocation.

Definition at line 167 of file JITLinkMemoryManager.h.

allocate() [2/2]

void llvm::jitlink::InProcessMemoryManager::allocate ( const JITLinkDylib * JD, LinkGraph & G, OnAllocatedFunction OnAllocated )

overridevirtual

Start the allocation process.

If the initial allocation is successful then the OnAllocated function will be called with a std::unique_ptr<InFlightAlloc> value. If the assocation is unsuccessful then the OnAllocated function will be called with an Error.

Scan the request and calculate the group and total sizes. Check that segment size is no larger than a page.

Check that the total size requested (including zero fill) is not larger than a size_t.

Implements llvm::jitlink::JITLinkMemoryManager.

Definition at line 356 of file JITLinkMemoryManager.cpp.

References llvm::alignTo(), llvm::sys::MemoryBlock::allocatedSize(), llvm::sys::Memory::allocateMappedMemory(), llvm::jitlink::BasicLayout::apply(), llvm::sys::MemoryBlock::base(), llvm::dbgs(), llvm::errorCodeToError(), llvm::formatv(), llvm::orc::ExecutorAddr::fromPtr(), G, llvm::jitlink::BasicLayout::getContiguousPageBasedLayoutSizes(), LLVM_DEBUG, llvm::make_error(), llvm::sys::Memory::MF_READ, llvm::sys::Memory::MF_WRITE, llvm::jitlink::BasicLayout::segments(), and llvm::orc::Standard.

Create()

Expected< std::unique_ptr< InProcessMemoryManager > > llvm::jitlink::InProcessMemoryManager::Create ( )

static

Attempts to auto-detect the host page size.

Definition at line 342 of file JITLinkMemoryManager.cpp.

References llvm::sys::Process::getPageSize(), llvm::inconvertibleErrorCode(), llvm::isPowerOf2_64(), and llvm::make_error().

deallocate() [1/4]

Error llvm::jitlink::JITLinkMemoryManager::deallocate ( FinalizedAlloc Alloc )

inline

Convenience function for blocking deallocation of a single alloc.

Definition at line 200 of file JITLinkMemoryManager.h.

deallocate() [2/4]

void llvm::jitlink::JITLinkMemoryManager::deallocate ( FinalizedAlloc Alloc, OnDeallocatedFunction OnDeallocated )

inline

Convenience function for deallocation of a single alloc.

Definition at line 184 of file JITLinkMemoryManager.h.

deallocate() [3/4]

void llvm::jitlink::InProcessMemoryManager::deallocate ( std::vector< FinalizedAlloc > Allocs, OnDeallocatedFunction OnDeallocated )

overridevirtual

Deallocate a list of allocation objects.

Dealloc actions will be run in reverse order (from the end of the vector to the start).

Run any deallocate calls.

Release the standard segments slab.

Implements llvm::jitlink::JITLinkMemoryManager.

Definition at line 455 of file JITLinkMemoryManager.cpp.

References llvm::Alloc, llvm::errorCodeToError(), llvm::joinErrors(), llvm::sys::Memory::releaseMappedMemory(), and llvm::Error::success().

deallocate() [4/4]

Error llvm::jitlink::JITLinkMemoryManager::deallocate ( std::vector< FinalizedAlloc > Allocs )

inline

Convenience function for blocking deallocation.

Definition at line 191 of file JITLinkMemoryManager.h.

---

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

• include/llvm/ExecutionEngine/JITLink/JITLinkMemoryManager.h
• lib/ExecutionEngine/JITLink/JITLinkMemoryManager.cpp