allocator.h File Reference

Memory allocator. More...

#include <stddef.h>

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Data Structures
struct	hat_allocator_t
	Allocator base struct. More...

Typedefs
typedef struct hat_allocator_t	hat_allocator_t
typedef void *(*	hat_allocator_realloc_t) (hat_allocator_t *a, size_t size, void *old)
	Custom allocator implementation function.

Functions
static void *	hat_allocator_alloc (hat_allocator_t *a, size_t size)
	Allocate new memory block.
static void *	hat_allocator_realloc (hat_allocator_t *a, size_t size, void *old)
	Reallocate existing memory block.
static void	hat_allocator_free (hat_allocator_t *a, void *old)
	Free memory block.

Detailed Description

Memory allocator.

Typedef Documentation

hat_allocator_realloc_t

typedef void *(* hat_allocator_realloc_t) (hat_allocator_t *a, size_t size, void *old)

Custom allocator implementation function.

Parameters

[in]	a	allocator instance
[in]	size	new memory block size
[in]	old	previous memory block

Returns

new memory block

Function should implement memory allocator which reallocates previously allocated memory pointed by old to newly return memory of size size. If old is NULL, then implementation allocates new memory block without resizing/copying previous. If size is set to 0, memory referenced by old is fried and NULL is returned.

hat_allocator_t

typedef struct hat_allocator_t hat_allocator_t

Function Documentation

hat_allocator_alloc()

static void * hat_allocator_alloc ( hat_allocator_t *  a, size_t  size  )

inlinestatic

Allocate new memory block.

Parameters

[in]	a	allocator instance
[in]	size	new memory block size

Returns

new memory block

If memory could not be allocated, NULL is returned.

hat_allocator_free()

static void hat_allocator_free ( hat_allocator_t *  a, void *  old  )

inlinestatic

Free memory block.

Parameters

[in]	a	allocator instance
[in]	old	existing memory block

hat_allocator_realloc()

static void * hat_allocator_realloc ( hat_allocator_t *  a, size_t  size, void *  old  )

inlinestatic

Reallocate existing memory block.

Parameters

[in]	a	allocator instance
[in]	size	new memory block size
[in]	old	existing memory block

Returns

new memory block

If memory could not be reallocated, NULL is returned.