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Viewing changes to Zend/zend_mm.h

  • Committer: Bazaar Package Importer
  • Author(s): Adam Conrad
  • Date: 2005-10-09 03:14:32 UTC
  • Revision ID: james.westby@ubuntu.com-20051009031432-kspik3lobxstafv9
Tags: upstream-5.0.5
Import upstream version 5.0.5

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Zend/zend_mm.h
 
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/*
 
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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: zend_mm.h,v 1.18 2004/07/05 17:06:41 andi Exp $ */
 
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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.h"
 
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#include "zend_types.h"
 
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#ifdef ZEND_WIN32
 
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#undef ZEND_MM
 
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#else
 
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/* #define ZEND_MM */
 
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#undef ZEND_MM
 
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#endif
 
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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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 */