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 * $FreeBSD$ 30 */ 31 32 /* 33 * DEFS.H 34 */ 35 36 #ifndef _ZALLOC_DEFS_H 37 #define _ZALLOC_DEFS_H 38 39 #define USEGUARD /* use stard/end guard bytes */ 40 #define USEENDGUARD 41 #define DMALLOCDEBUG /* add debugging code to gather stats */ 42 #define ZALLOCDEBUG 43 44 #include <sys/stdint.h> 45 #include "stand.h" 46 #include "zalloc_mem.h" 47 48 #define Library extern 49 50 /* 51 * block extension for sbrk() 52 */ 53 54 #define BLKEXTEND (4 * 1024) 55 #define BLKEXTENDMASK (BLKEXTEND - 1) 56 57 /* 58 * Required malloc alignment. 59 * 60 * Embedded platforms using the u-boot API drivers require that all I/O buffers 61 * be on a cache line sized boundary. The worst case size for that is 64 bytes. 62 * For other platforms, 16 bytes works fine. The alignment also must be at 63 * least sizeof(struct MemNode); this is asserted in zalloc.c. 64 */ 65 66 #if defined(__arm__) || defined(__mips__) || defined(__powerpc__) 67 #define MALLOCALIGN 64 68 #else 69 #define MALLOCALIGN 16 70 #endif 71 #define MALLOCALIGN_MASK (MALLOCALIGN - 1) 72 73 typedef struct Guard { 74 size_t ga_Bytes; 75 size_t ga_Magic; /* must be at least 32 bits */ 76 } Guard; 77 78 #define GAMAGIC 0x55FF44FD 79 #define GAFREE 0x5F54F4DF 80 81 #include "zalloc_protos.h" 82 83 #endif /* _ZALLOC_DEFS_H */ 84