PerThreadAllocator is used in conjunction with ThreadPoolExecutor to allow per-thread allocations. More...

#include "llvm/Support/PerThreadBumpPtrAllocator.h"

Inheritance diagram for llvm::parallel::PerThreadAllocator< AllocatorTy >:

Public Member Functions
	PerThreadAllocator ()

void *	Allocate (size_t Size, size_t Alignment)
	Allocate Size bytes of Alignment aligned memory.

void	Deallocate (const void *Ptr, size_t Size, size_t Alignment)
	Deallocate Ptr to Size bytes of memory allocated by this allocator.

AllocatorTy &	getThreadLocalAllocator ()
	Return allocator corresponding to the current thread.

size_t	getNumberOfAllocators () const

void	Reset ()
	Reset state of allocators.

size_t	getTotalMemory () const
	Return total memory size used by all allocators.

size_t	getBytesAllocated () const
	Return allocated size by all allocators.

void	setRedZoneSize (size_t NewSize)
	Set red zone for all allocators.

void	PrintStats () const
	Print statistic for each allocator.

Public Member Functions inherited from llvm::AllocatorBase< PerThreadAllocator< AllocatorTy > >
void *	Allocate (size_t Size, size_t Alignment)
	Allocate Size bytes of Alignment aligned memory.

T *	Allocate (size_t Num=1)
	Allocate space for a sequence of objects without constructing them.

void	Deallocate (const void *Ptr, size_t Size, size_t Alignment)
	Deallocate Ptr to Size bytes of memory allocated by this allocator.

std::enable_if_t<!std::is_same_v< std::remove_cv_t< T >, void >, void >	Deallocate (T *Ptr, size_t Num=1)
	Deallocate space for a sequence of objects without constructing them.

Protected Attributes
size_t	NumOfAllocators

std::unique_ptr< AllocatorTy[]>	Allocators

Detailed Description

template<typename AllocatorTy>
class llvm::parallel::PerThreadAllocator< AllocatorTy >

PerThreadAllocator is used in conjunction with ThreadPoolExecutor to allow per-thread allocations.

It wraps a possibly thread-unsafe allocator, e.g. BumpPtrAllocator. PerThreadAllocator must be used with only main thread or threads created by ThreadPoolExecutor, as it utilizes getThreadIndex, which is set by ThreadPoolExecutor. To work properly, ThreadPoolExecutor should be initialized before PerThreadAllocator is created. TODO: The same approach might be implemented for ThreadPool.

Definition at line 27 of file PerThreadBumpPtrAllocator.h.