xallocator.cpp File Reference

#include "Allocator.h"
#include "xallocator.h"
#include "predef/util/Fault.h"
#include <cstring>
#include <iostream>
#include <mutex>
#include <new>
#include <cstddef>
#include <cstdio>
#include <assert.h>

Macros
#define	char_BIT   8
#define	CHECK_ALIGNMENT
#define	MAX_ALLOCATORS   15

Functions
template<class T >
T	nexthigher (T k)
void	xalloc_init ()
void	xalloc_destroy ()
Allocator *	xallocator_get_allocator (size_t size)
void *	xmalloc (size_t size)
void	xfree (void *ptr)
void *	xrealloc (void *oldMem, size_t size)
void	xalloc_stats ()
	Output xallocator usage statistics.

Macro Definition Documentation

char_BIT

#define char_BIT   8

CHECK_ALIGNMENT

#define CHECK_ALIGNMENT

MAX_ALLOCATORS

#define MAX_ALLOCATORS   15

Function Documentation

nexthigher()

template<class T >

T nexthigher

(

T

k

)

Returns the next higher powers of two. For instance, pass in 12 and the value returned would be 16.

Parameters

[in]

k

- numeric value to compute the next higher power of two.

Returns

The next higher power of two based on the input k.

xalloc_destroy()

void xalloc_destroy

(

)

Called one time when the application exits to cleanup any allocated memory. ~XallocInitDestroy destructor calls this function automatically.

xalloc_init()

void xalloc_init

(

)

This function must be called exactly one time before any other xallocator API is called. XallocInitDestroy constructor calls this function automatically.

xalloc_stats()

void xalloc_stats

(

)

Output xallocator usage statistics.

Output allocator statistics to the standard output.

xallocator_get_allocator()

Allocator * xallocator_get_allocator

(

size_t

size

)

Get an Allocator instance based upon the client's requested block size. If a Allocator instance is not currently available to handle the size, then a new Allocator instance is create.

Parameters

[in]

size

- the client's requested block size.

Returns

An Allocator instance that handles blocks of the requested size.

xfree()

void xfree

(

void *

ptr

)

Frees a memory block previously allocated with xalloc. The blocks are returned to the fixed block allocator that originally created it.

Parameters

[in]

ptr

- a pointer to a block created with xalloc.

xmalloc()

void * xmalloc

(

size_t

size

)

Allocates a memory block of the requested size. The blocks are created from the fixed block allocators.

Parameters

[in]

size

- the client requested size of the block.

Returns

A pointer to the client's memory block.

xrealloc()

void * xrealloc	(	void *	oldMem,
		size_t	size )

Reallocates a memory block previously allocated with xalloc.

Parameters

[in]	ptr	- a pointer to a block created with xalloc.
[in]	size	- the client requested block size to create.