1 /* $NetBSD: malloc.h,v 1.107 2010/04/23 19:09:15 rmind Exp $ */ 2 3 /* 4 * Copyright (c) 1987, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)malloc.h 8.5 (Berkeley) 5/3/95 32 */ 33 34 #ifndef _SYS_MALLOC_H_ 35 #define _SYS_MALLOC_H_ 36 37 #if defined(_KERNEL_OPT) 38 #include "opt_kmemstats.h" 39 #include "opt_malloclog.h" 40 #include "opt_malloc_debug.h" 41 #endif 42 43 44 #ifdef _KERNEL 45 46 /* 47 * flags to malloc 48 */ 49 #define M_WAITOK 0x0000 /* can wait for resources */ 50 #define M_NOWAIT 0x0001 /* do not wait for resources */ 51 #define M_ZERO 0x0002 /* zero the allocation */ 52 #define M_CANFAIL 0x0004 /* can fail if requested memory can't ever 53 * be allocated */ 54 #include <sys/mallocvar.h> 55 /* 56 * The following are standard, built-in malloc types that are 57 * not specific to any one subsystem. 58 */ 59 MALLOC_DECLARE(M_DEVBUF); 60 MALLOC_DECLARE(M_DMAMAP); 61 MALLOC_DECLARE(M_FREE); 62 MALLOC_DECLARE(M_PCB); 63 MALLOC_DECLARE(M_TEMP); 64 65 /* XXX These should all be declared elsewhere. */ 66 MALLOC_DECLARE(M_RTABLE); 67 MALLOC_DECLARE(M_FTABLE); 68 MALLOC_DECLARE(M_UFSMNT); 69 MALLOC_DECLARE(M_NETADDR); 70 MALLOC_DECLARE(M_IPMOPTS); 71 MALLOC_DECLARE(M_IPMADDR); 72 MALLOC_DECLARE(M_MRTABLE); 73 MALLOC_DECLARE(M_BWMETER); 74 #endif /* _KERNEL */ 75 76 /* 77 * Set of buckets for each size of memory block that is retained 78 */ 79 struct kmembuckets { 80 void *kb_next; /* list of free blocks */ 81 void *kb_last; /* last free block */ 82 long kb_calls; /* total calls to allocate this size */ 83 long kb_total; /* total number of blocks allocated */ 84 long kb_totalfree; /* # of free elements in this bucket */ 85 long kb_elmpercl; /* # of elements in this sized allocation */ 86 long kb_highwat; /* high water mark */ 87 long kb_couldfree; /* over high water mark and could free */ 88 }; 89 90 #ifdef _KERNEL 91 #ifdef MALLOCLOG 92 void *_kern_malloc(unsigned long, struct malloc_type *, int, const char *, long); 93 void _kern_free(void *, struct malloc_type *, const char *, long); 94 #define malloc(size, type, flags) \ 95 _kern_malloc((size), (type), (flags), __FILE__, __LINE__) 96 #define free(addr, type) \ 97 _kern_free((addr), (type), __FILE__, __LINE__) 98 #else 99 void *kern_malloc(unsigned long, struct malloc_type *, int); 100 void kern_free(void *, struct malloc_type *); 101 #define malloc(size, type, flags) kern_malloc(size, type, flags) 102 #define free(addr, type) kern_free(addr, type) 103 #endif /* MALLOCLOG */ 104 105 #ifdef MALLOC_DEBUG 106 void debug_malloc_init(void); 107 int debug_malloc(unsigned long, struct malloc_type *, int, void **); 108 int debug_free(void *, struct malloc_type *); 109 110 void debug_malloc_print(void); 111 void debug_malloc_printit(void (*)(const char *, ...), vaddr_t); 112 #endif /* MALLOC_DEBUG */ 113 114 void *kern_realloc(void *, unsigned long, struct malloc_type *, int); 115 #define realloc(ptr, size, type, flags) \ 116 kern_realloc(ptr, size, type, flags) 117 unsigned long 118 malloc_roundup(unsigned long); 119 #endif /* _KERNEL */ 120 #endif /* !_SYS_MALLOC_H_ */ 121