nanojit::Allocator Class Reference

Allocator is a bump-pointer allocator with an SPI for getting more memory from embedder-implemented allocator, such as malloc()/free(). More...

#include <Allocator.h>

Collaboration diagram for nanojit::Allocator:

List of all members.

Classes
class	Chunk
Public Member Functions
	Allocator ()
	~Allocator ()
void	reset ()
void *	alloc (size_t nbytes)
	alloc memory, never return null.
void *	fallibleAlloc (size_t nbytes)
	alloc memory, maybe return null.
Static Public Attributes
static const size_t	MIN_CHUNK_SZB = 2000
Protected Member Functions
void *	allocSlow (size_t nbytes, bool fallible=false)
bool	fill (size_t minbytes, bool fallible)
void *	allocChunk (size_t nbytes, bool fallible)
	allocate another block from a host provided allocator
void	freeChunk (void *)
	free back to the same allocator
void	postReset ()
	hook for post-reset action.
Protected Attributes
Chunk *	current_chunk
char *	current_top
char *	current_limit

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Detailed Description

Allocator is a bump-pointer allocator with an SPI for getting more memory from embedder-implemented allocator, such as malloc()/free().

alloc() never returns NULL. The implementation of allocChunk() is expected to perform a longjmp or exception when an allocation can't proceed. fallibleAlloc() (and fallibleAllocChunk()) may return NULL. They should be used for large allocations whose failure can be handled without too much difficulty.

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Constructor & Destructor Documentation

nanojit::Allocator::Allocator

(

)

nanojit::Allocator::~Allocator

(

)

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Member Function Documentation

void* nanojit::Allocator::alloc

(

size_t

nbytes

)

[inline]

alloc memory, never return null.

void* nanojit::Allocator::allocChunk	(	size_t	nbytes,
		bool	fallible
	)			[protected]

allocate another block from a host provided allocator

void* nanojit::Allocator::allocSlow	(	size_t	nbytes,
		bool	fallible = false
	)			[protected]

void* nanojit::Allocator::fallibleAlloc

(

size_t

nbytes

)

[inline]

alloc memory, maybe return null.

bool nanojit::Allocator::fill	(	size_t	minbytes,
		bool	fallible
	)			[protected]

void nanojit::Allocator::freeChunk

(

void *

)

[protected]

free back to the same allocator

void nanojit::Allocator::postReset

(

)

[protected]

hook for post-reset action.

void nanojit::Allocator::reset

(

)

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Member Data Documentation

Chunk* nanojit::Allocator::current_chunk [protected]

char* nanojit::Allocator::current_limit [protected]

char* nanojit::Allocator::current_top [protected]

const size_t nanojit::Allocator::MIN_CHUNK_SZB = 2000 [static]

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

• Allocator.h