mirror of
https://github.com/freebsd/freebsd-src.git
synced 2024-11-27 13:32:45 +00:00
88 lines
2.7 KiB
C
88 lines
2.7 KiB
C
/*
|
|
* This module derived from code donated to the FreeBSD Project by
|
|
* Matthew Dillon <dillon@backplane.com>
|
|
*
|
|
* Copyright (c) 1998 The FreeBSD Project
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
/*
|
|
* DEFS.H
|
|
*/
|
|
|
|
#define USEGUARD /* use stard/end guard bytes */
|
|
#define USEENDGUARD
|
|
#define DMALLOCDEBUG /* add debugging code to gather stats */
|
|
#define ZALLOCDEBUG
|
|
|
|
#include <string.h>
|
|
#include "stand.h"
|
|
|
|
#ifdef __i386__
|
|
typedef unsigned int iaddr_t; /* unsigned int same size as pointer */
|
|
typedef int saddr_t; /* signed int same size as pointer */
|
|
#endif
|
|
#ifdef __alpha__
|
|
typedef unsigned long iaddr_t; /* unsigned int same size as pointer */
|
|
typedef long saddr_t; /* signed int same size as pointer */
|
|
#endif
|
|
|
|
#include "zalloc_mem.h"
|
|
|
|
#define Prototype extern
|
|
#define Library extern
|
|
|
|
#ifndef NULL
|
|
#define NULL ((void *)0)
|
|
#endif
|
|
|
|
/*
|
|
* block extension for sbrk()
|
|
*/
|
|
|
|
#define BLKEXTEND (4 * 1024)
|
|
#define BLKEXTENDMASK (BLKEXTEND - 1)
|
|
|
|
/*
|
|
* required malloc alignment. Use sizeof(long double) for architecture
|
|
* independance.
|
|
*
|
|
* Note: if we implement a more sophisticated realloc, we should ensure that
|
|
* MALLOCALIGN is at least as large as MemNode.
|
|
*/
|
|
|
|
typedef struct Guard {
|
|
size_t ga_Bytes;
|
|
size_t ga_Magic; /* must be at least 32 bits */
|
|
} Guard;
|
|
|
|
#define MATYPE long double
|
|
#define MALLOCALIGN ((sizeof(MATYPE) > sizeof(Guard)) ? sizeof(MATYPE) : sizeof(Guard))
|
|
#define GAMAGIC 0x55FF44FD
|
|
|
|
#include "zalloc_protos.h"
|
|
|