FreeBSD/Linux Kernel Cross Reference
sys/sys/malloc.h
1 /* $NetBSD: malloc.h,v 1.96 2006/10/02 02:59:38 chs 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 #include "opt_lockdebug.h"
42 #endif
43
44
45 /*
46 * flags to malloc
47 */
48 #define M_WAITOK 0x0000 /* can wait for resources */
49 #define M_NOWAIT 0x0001 /* do not wait for resources */
50 #define M_ZERO 0x0002 /* zero the allocation */
51 #define M_CANFAIL 0x0004 /* can fail if requested memory can't ever
52 * be allocated */
53 #ifdef _KERNEL
54
55 #include <sys/lock.h>
56 #include <sys/mallocvar.h>
57 /*
58 * The following are standard, built-in malloc types that are
59 * not specific to any one subsystem.
60 */
61 MALLOC_DECLARE(M_DEVBUF);
62 MALLOC_DECLARE(M_DMAMAP);
63 MALLOC_DECLARE(M_FREE);
64 MALLOC_DECLARE(M_PCB);
65 MALLOC_DECLARE(M_SOFTINTR);
66 MALLOC_DECLARE(M_TEMP);
67
68 /* XXX These should all be declared elsewhere. */
69 MALLOC_DECLARE(M_RTABLE);
70 MALLOC_DECLARE(M_FTABLE);
71 MALLOC_DECLARE(M_UFSMNT);
72 MALLOC_DECLARE(M_NETADDR);
73 MALLOC_DECLARE(M_IPMOPTS);
74 MALLOC_DECLARE(M_IPMADDR);
75 MALLOC_DECLARE(M_MRTABLE);
76 MALLOC_DECLARE(M_BWMETER);
77 MALLOC_DECLARE(M_1394DATA);
78 #endif /* _KERNEL */
79
80 /*
81 * Set of buckets for each size of memory block that is retained
82 */
83 struct kmembuckets {
84 caddr_t kb_next; /* list of free blocks */
85 caddr_t kb_last; /* last free block */
86 long kb_calls; /* total calls to allocate this size */
87 long kb_total; /* total number of blocks allocated */
88 long kb_totalfree; /* # of free elements in this bucket */
89 long kb_elmpercl; /* # of elements in this sized allocation */
90 long kb_highwat; /* high water mark */
91 long kb_couldfree; /* over high water mark and could free */
92 };
93
94 #ifdef _KERNEL
95 #define MALLOC(space, cast, size, type, flags) \
96 (space) = (cast)malloc((u_long)(size), (type), (flags))
97 #define FREE(addr, type) free((caddr_t)(addr), (type))
98
99 #ifdef MALLOCLOG
100 void *_malloc(unsigned long, struct malloc_type *, int, const char *, long);
101 void _free(void *, struct malloc_type *, const char *, long);
102 #define malloc(size, type, flags) \
103 _malloc((size), (type), (flags), __FILE__, __LINE__)
104 #define free(addr, type) \
105 _free((addr), (type), __FILE__, __LINE__)
106 #else
107 void *malloc(unsigned long, struct malloc_type *, int);
108 void free(void *, struct malloc_type *);
109 #endif /* MALLOCLOG */
110
111 #ifdef MALLOC_DEBUG
112 int debug_malloc(unsigned long, struct malloc_type *, int, void **);
113 int debug_free(void *, struct malloc_type *);
114 void debug_malloc_init(void);
115
116 void debug_malloc_print(void);
117 void debug_malloc_printit(void (*)(const char *, ...), vaddr_t);
118 #endif /* MALLOC_DEBUG */
119
120 void *realloc(void *, unsigned long, struct malloc_type *, int);
121 unsigned long
122 malloc_roundup(unsigned long);
123 #endif /* _KERNEL */
124 #endif /* !_SYS_MALLOC_H_ */
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