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/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) 1998-2005 Zend Technologies Ltd. (http://www.zend.com) |
+----------------------------------------------------------------------+
| This source file is subject to version 2.00 of the Zend license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.zend.com/license/2_00.txt. |
| If you did not receive a copy of the Zend license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@zend.com so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Andi Gutmans <andi@zend.com> |
| Zeev Suraski <zeev@zend.com> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#ifndef _ZEND_MM_H
#define _ZEND_MM_H
#include <sys/types.h>
#include "zend.h"
#include "zend_types.h"
#ifdef ZEND_WIN32
#undef ZEND_MM
#else
/* #define ZEND_MM */
#undef ZEND_MM
#endif
/* mm block type */
typedef struct _zend_mm_block {
unsigned int size : 31;
unsigned int type : 1;
size_t prev_size;
unsigned int guard_block : 1;
} zend_mm_block;
typedef struct _zend_mm_free_block {
unsigned int size : 31;
unsigned int type : 1;
size_t prev_size;
struct _zend_mm_free_block *prev_free_block;
struct _zend_mm_free_block *next_free_block;
} zend_mm_free_block;
typedef struct _zend_mm_segment {
struct _zend_mm_segment *next_segment;
} zend_mm_segment;
#define ZEND_MM_NUM_BUCKETS 16
#define ZEND_HEAP_MAX_BUCKETS ZEND_MM_NUM_BUCKETS
typedef int zend_heap[2*ZEND_HEAP_MAX_BUCKETS-1];
typedef struct _zend_mm_heap {
zend_mm_segment *segments_list;
size_t block_size;
zend_mm_free_block *free_buckets[ZEND_MM_NUM_BUCKETS];
zend_heap heap;
} zend_mm_heap;
zend_bool zend_mm_startup(zend_mm_heap *heap, size_t block_size);
void zend_mm_shutdown(zend_mm_heap *heap);
void *zend_mm_alloc(zend_mm_heap *heap, size_t size);
void zend_mm_free(zend_mm_heap *heap, void *p);
void *zend_mm_realloc(zend_mm_heap *heap, void *p, size_t size);
#endif /* _ZEND_MM_H */
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* indent-tabs-mode: t
* End:
*/
|
