Allocator.h File Reference

This file defines the MallocAllocator and BumpPtrAllocator interfaces. More...

#include "llvm/ADT/Optional.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/MemAlloc.h"
#include <algorithm>
#include <cassert>
#include <cstddef>
#include <cstdint>
#include <cstdlib>
#include <iterator>
#include <type_traits>
#include <utility>

Include dependency graph for Allocator.h:

Go to the source code of this file.

Classes
class	llvm::AllocatorBase< DerivedT >
	CRTP base class providing obvious overloads for the core Allocate() methods of LLVM-style allocators. More...
class	llvm::MallocAllocator
class	llvm::BumpPtrAllocatorImpl< AllocatorT, SlabSize, SizeThreshold >
	Allocate memory in an ever growing pool, as if by bump-pointer. More...
class	llvm::SpecificBumpPtrAllocator< T >
	A BumpPtrAllocator that allows only elements of a specific type to be allocated. More...

Namespaces
	llvm
	This class represents lattice values for constants.
	llvm::detail
	Implementation details of the pass manager interfaces.

Typedefs
typedef BumpPtrAllocatorImpl	llvm::BumpPtrAllocator
	The standard BumpPtrAllocator which just uses the default template parameters. More...

Functions
void	llvm::detail::printBumpPtrAllocatorStats (unsigned NumSlabs, size_t BytesAllocated, size_t TotalMemory)
template<typename AllocatorT , size_t SlabSize, size_t SizeThreshold>
void *	operator new (size_t Size, llvm::BumpPtrAllocatorImpl< AllocatorT, SlabSize, SizeThreshold > &Allocator)
template<typename AllocatorT , size_t SlabSize, size_t SizeThreshold>
void	operator delete (void *, llvm::BumpPtrAllocatorImpl< AllocatorT, SlabSize, SizeThreshold > &)

Detailed Description

This file defines the MallocAllocator and BumpPtrAllocator interfaces.

Both of these conform to an LLVM "Allocator" concept which consists of an Allocate method accepting a size and alignment, and a Deallocate accepting a pointer and size. Further, the LLVM "Allocator" concept has overloads of Allocate and Deallocate for setting size and alignment based on the final type. These overloads are typically provided by a base class template AllocatorBase.

Definition in file Allocator.h.

Function Documentation

operator delete()

template<typename AllocatorT , size_t SlabSize, size_t SizeThreshold>

void operator delete	(	void *	,
		llvm::BumpPtrAllocatorImpl< AllocatorT, SlabSize, SizeThreshold > &
	)

Definition at line 514 of file Allocator.h.

operator new()

template<typename AllocatorT , size_t SlabSize, size_t SizeThreshold>

void* operator new	(	size_t	Size,
		llvm::BumpPtrAllocatorImpl< AllocatorT, SlabSize, SizeThreshold > &	Allocator
	)

Definition at line 497 of file Allocator.h.

References Allocator, D, llvm::ARM_MB::LD, llvm::NextPowerOf2(), offsetof, P, and Size.