zalloc_defs.h revision 40458 
1/*
2 * This module derived from code donated to the FreeBSD Project by
3 * Matthew Dillon <dillon@backplane.com>
4 *
5 * Copyright (c) 1998 The FreeBSD Project
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 *	$Id: zalloc_defs.h,v 1.3 1998/10/01 17:35:08 msmith Exp $
30 */
31
32/*
33 * DEFS.H
34 */
35
36#define USEGUARD		/* use stard/end guard bytes */
37#define USEENDGUARD
38#define DMALLOCDEBUG		/* add debugging code to gather stats */
39#define ZALLOCDEBUG
40
41#include <string.h>
42#include "stand.h"
43
44#ifdef __i386__
45typedef unsigned int iaddr_t;	/* unsigned int same size as pointer	*/
46typedef int saddr_t;		/* signed int same size as pointer	*/
47#endif
48#ifdef __alpha__
49typedef unsigned long iaddr_t;	/* unsigned int same size as pointer	*/
50typedef long saddr_t;		/* signed int same size as pointer	*/
51#endif
52
53#include "zalloc_mem.h"
54
55#define Prototype extern
56#define Library extern
57
58#ifndef NULL
59#define NULL	((void *)0)
60#endif
61
62/*
63 * block extension for sbrk()
64 */
65
66#define BLKEXTEND	(4 * 1024)
67#define BLKEXTENDMASK	(BLKEXTEND - 1)
68
69/*
70 * required malloc alignment.  Use sizeof(long double) for architecture
71 * independance.
72 *
73 * Note: if we implement a more sophisticated realloc, we should ensure that
74 * MALLOCALIGN is at least as large as MemNode.
75 */
76
77typedef struct Guard {
78    size_t	ga_Bytes;
79    size_t	ga_Magic;	/* must be at least 32 bits */
80} Guard;
81
82#define MATYPE		long double
83#define MALLOCALIGN	((sizeof(MATYPE) > sizeof(Guard)) ? sizeof(MATYPE) : sizeof(Guard))
84#define GAMAGIC		0x55FF44FD
85
86#include "zalloc_protos.h"
87
88