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80 lines
2.5 KiB
C
80 lines
2.5 KiB
C
/*
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+----------------------------------------------------------------------+
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| Zend Engine |
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+----------------------------------------------------------------------+
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| Copyright (c) 1998-2004 Zend Technologies Ltd. (http://www.zend.com) |
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+----------------------------------------------------------------------+
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| This source file is subject to version 2.00 of the Zend license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| http://www.zend.com/license/2_00.txt. |
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| If you did not receive a copy of the Zend license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@zend.com so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Authors: Andi Gutmans <andi@zend.com> |
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| Zeev Suraski <zeev@zend.com> |
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+----------------------------------------------------------------------+
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*/
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/* $Id$ */
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#ifndef _ZEND_MM_H
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#define _ZEND_MM_H
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#include <sys/types.h>
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#include "zend_types.h"
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/* Define this to enable Zend MM */
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#define ZEND_MM
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/* mm block type */
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typedef struct _zend_mm_block {
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unsigned int size : 31;
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unsigned int type : 1;
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size_t prev_size;
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unsigned int guard_block : 1;
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} zend_mm_block;
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typedef struct _zend_mm_free_block {
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unsigned int size : 31;
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unsigned int type : 1;
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size_t prev_size;
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struct _zend_mm_free_block *prev_free_block;
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struct _zend_mm_free_block *next_free_block;
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} zend_mm_free_block;
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typedef struct _zend_mm_segment {
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struct _zend_mm_segment *next_segment;
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} zend_mm_segment;
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#define ZEND_MM_NUM_BUCKETS 16
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#define ZEND_HEAP_MAX_BUCKETS ZEND_MM_NUM_BUCKETS
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typedef int zend_heap[2*ZEND_HEAP_MAX_BUCKETS-1];
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typedef struct _zend_mm_heap {
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zend_mm_segment *segments_list;
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size_t block_size;
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zend_mm_free_block *free_buckets[ZEND_MM_NUM_BUCKETS];
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zend_heap heap;
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} zend_mm_heap;
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zend_bool zend_mm_startup(zend_mm_heap *heap, size_t block_size);
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void zend_mm_shutdown(zend_mm_heap *heap);
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void *zend_mm_alloc(zend_mm_heap *heap, size_t size);
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void zend_mm_free(zend_mm_heap *heap, void *p);
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void *zend_mm_realloc(zend_mm_heap *heap, void *p, size_t size);
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#endif /* _ZEND_MM_H */
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/*
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* Local variables:
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* tab-width: 4
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* c-basic-offset: 4
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* indent-tabs-mode: t
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* End:
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*/
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