FreeBSD/Linux Kernel Cross Reference
sys/sys/malloc.h
1 /*
2 * Copyright (c) 1987, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * @(#)malloc.h 8.5 (Berkeley) 5/3/95
34 * $FreeBSD: src/sys/sys/malloc.h,v 1.16.2.2 1999/09/05 08:22:34 peter Exp $
35 */
36
37 #ifndef _SYS_MALLOC_H_
38 #define _SYS_MALLOC_H_
39
40 #define KMEMSTATS
41
42 /*
43 * flags to malloc
44 */
45 #define M_WAITOK 0x0000
46 #define M_NOWAIT 0x0001
47 #define M_KERNEL 0x0002
48
49 /*
50 * Types of memory to be allocated
51 */
52 #define M_FREE 0 /* should be on free list */
53 #define M_MBUF 1 /* mbuf */
54 #define M_DEVBUF 2 /* device driver memory */
55 #define M_SOCKET 3 /* socket structure */
56 #define M_PCB 4 /* protocol control block */
57 #define M_RTABLE 5 /* routing tables */
58 #define M_HTABLE 6 /* IMP host tables */
59 #define M_FTABLE 7 /* fragment reassembly header */
60 #define M_ZOMBIE 8 /* zombie proc status */
61 #define M_IFADDR 9 /* interface address */
62 #define M_SOOPTS 10 /* socket options */
63 #define M_SONAME 11 /* socket name */
64 #define M_NAMEI 12 /* namei path name buffer */
65 #define M_GPROF 13 /* kernel profiling buffer */
66 #define M_IOCTLOPS 14 /* ioctl data buffer */
67 #define M_MAPMEM 15 /* mapped memory descriptors */
68 #define M_CRED 16 /* credentials */
69 #define M_PGRP 17 /* process group header */
70 #define M_SESSION 18 /* session header */
71 #define M_IOV 19 /* large iov's */
72 #define M_MOUNT 20 /* vfs mount struct */
73 #define M_FHANDLE 21 /* network file handle */
74 #define M_NFSREQ 22 /* NFS request header */
75 #define M_NFSMNT 23 /* NFS mount structure */
76 #define M_NFSNODE 24 /* NFS vnode private part */
77 #define M_VNODE 25 /* Dynamically allocated vnodes */
78 #define M_CACHE 26 /* Dynamically allocated cache entries */
79 #define M_DQUOT 27 /* UFS quota entries */
80 #define M_UFSMNT 28 /* UFS mount structure */
81 #define M_SHM 29 /* SVID compatible shared memory segments */
82 #define M_VMMAP 30 /* VM map structures */
83 #define M_VMMAPENT 31 /* VM map entry structures */
84 #define M_VMOBJ 32 /* VM object structure */
85 #define M_VMOBJHASH 33 /* VM object hash structure */
86 #define M_VMPMAP 34 /* VM pmap */
87 #define M_VMPVENT 35 /* VM phys-virt mapping entry */
88 #define M_VMPAGER 36 /* XXX: VM pager struct */
89 #define M_VMPGDATA 37 /* XXX: VM pager private data */
90 #define M_FILE 38 /* Open file structure */
91 #define M_FILEDESC 39 /* Open file descriptor table */
92 #define M_LOCKF 40 /* Byte-range locking structures */
93 #define M_PROC 41 /* Proc structures */
94 #define M_SUBPROC 42 /* Proc sub-structures */
95 #define M_SEGMENT 43 /* Segment for LFS */
96 #define M_LFSNODE 44 /* LFS vnode private part */
97 #define M_FFSNODE 45 /* FFS vnode private part */
98 #define M_MFSNODE 46 /* MFS vnode private part */
99 #define M_NQLEASE 47 /* Nqnfs lease */
100 #define M_NQMHOST 48 /* Nqnfs host address table */
101 #define M_NETADDR 49 /* Export host address structure */
102 #define M_NFSSVC 50 /* Nfs server structure */
103 #define M_NFSUID 51 /* Nfs uid mapping structure */
104 #define M_NFSD 52 /* Nfs server daemon structure */
105 #define M_IPMOPTS 53 /* internet multicast options */
106 #define M_IPMADDR 54 /* internet multicast address */
107 #define M_IFMADDR 55 /* link-level multicast address */
108 #define M_MRTABLE 56 /* multicast routing tables */
109 #define M_ISOFSMNT 57 /* ISOFS mount structure */
110 #define M_ISOFSNODE 58 /* ISOFS vnode private part */
111 #define M_NFSRVDESC 59 /* NFS server socket descriptor */
112 #define M_NFSDIROFF 60 /* NFS directory offset data */
113 #define M_NFSBIGFH 61 /* NFS version 3 file handle */
114 #define M_MSDOSFSMNT 67 /* MSDOSFS mount structure */
115 #define M_MSDOSFSNODE 68 /* MSDOSFS vnode private part */
116 #define M_MSDOSFSFAT 69 /* MSDOSFS file allocation table */
117 #define M_DEVFSMNT 70 /* DEVFS mount structure */
118 #define M_DEVFSBACK 71 /* DEVFS Back node */
119 #define M_DEVFSFRONT 72 /* DEVFS Front node */
120 #define M_DEVFSNODE 73 /* DEVFS node */
121 #define M_TEMP 74 /* misc temporary data buffers */
122 #define M_TTYS 75 /* tty data structures */
123 #define M_GZIP 76 /* Gzip trees */
124 #define M_IPFW 77 /* IpFw/IpAcct chain's */
125 #define M_DEVL 78 /* isa_device lists in userconfig() */
126 #define M_PKTCLASS 79 /* structures used in packet classifier */
127 #define M_SYSCTL 80 /* sysctl internal magic */
128 #define M_SECA 81 /* security associations, key management */
129 #define M_BIOBUF 82 /* BIO buffer */
130 #define M_KTRACE 83 /* KTRACE */
131 #define M_SELECT 84 /* select() buffer */
132 #define M_CFS 85 /* Coda */
133 #define M_LAST 86 /* Must be last type + 1 */
134
135 #define INITKMEMNAMES { \
136 "free", /* 0 M_FREE */ \
137 "mbuf", /* 1 M_MBUF */ \
138 "devbuf", /* 2 M_DEVBUF */ \
139 "socket", /* 3 M_SOCKET */ \
140 "pcb", /* 4 M_PCB */ \
141 "routetbl", /* 5 M_RTABLE */ \
142 "hosttbl", /* 6 M_HTABLE */ \
143 "fragtbl", /* 7 M_FTABLE */ \
144 "zombie", /* 8 M_ZOMBIE */ \
145 "ifaddr", /* 9 M_IFADDR */ \
146 "soopts", /* 10 M_SOOPTS */ \
147 "soname", /* 11 M_SONAME */ \
148 "namei", /* 12 M_NAMEI */ \
149 "gprof", /* 13 M_GPROF */ \
150 "ioctlops", /* 14 M_IOCTLOPS */ \
151 "mapmem", /* 15 M_MAPMEM */ \
152 "cred", /* 16 M_CRED */ \
153 "pgrp", /* 17 M_PGRP */ \
154 "session", /* 18 M_SESSION */ \
155 "iov", /* 19 M_IOV */ \
156 "mount", /* 20 M_MOUNT */ \
157 "fhandle", /* 21 M_FHANDLE */ \
158 "NFS req", /* 22 M_NFSREQ */ \
159 "NFS mount", /* 23 M_NFSMNT */ \
160 "NFS node", /* 24 M_NFSNODE */ \
161 "vnodes", /* 25 M_VNODE */ \
162 "namecache", /* 26 M_CACHE */ \
163 "UFS quota", /* 27 M_DQUOT */ \
164 "UFS mount", /* 28 M_UFSMNT */ \
165 "shm", /* 29 M_SHM */ \
166 "VM map", /* 30 M_VMMAP */ \
167 "VM mapent", /* 31 M_VMMAPENT */ \
168 "VM object", /* 32 M_VMOBJ */ \
169 "VM objhash", /* 33 M_VMOBJHASH */ \
170 "VM pmap", /* 34 M_VMPMAP */ \
171 "VM pvmap", /* 35 M_VMPVENT */ \
172 "VM pager", /* 36 M_VMPAGER */ \
173 "VM pgdata", /* 37 M_VMPGDATA */ \
174 "file", /* 38 M_FILE */ \
175 "file desc", /* 39 M_FILEDESC */ \
176 "lockf", /* 40 M_LOCKF */ \
177 "proc", /* 41 M_PROC */ \
178 "subproc", /* 42 M_SUBPROC */ \
179 "LFS segment", /* 43 M_SEGMENT */ \
180 "LFS node", /* 44 M_LFSNODE */ \
181 "FFS node", /* 45 M_FFSNODE */ \
182 "MFS node", /* 46 M_MFSNODE */ \
183 "NQNFS Lease", /* 47 M_NQLEASE */ \
184 "NQNFS Host", /* 48 M_NQMHOST */ \
185 "Export Host", /* 49 M_NETADDR */ \
186 "NFS srvsock", /* 50 M_NFSSVC */ \
187 "NFS uid", /* 51 M_NFSUID */ \
188 "NFS daemon", /* 52 M_NFSD */ \
189 "ip_moptions", /* 53 M_IPMOPTS */ \
190 "in_multi", /* 54 M_IPMADDR */ \
191 "ether_multi", /* 55 M_IFMADDR */ \
192 "mrt", /* 56 M_MRTABLE */ \
193 "ISOFS mount", /* 57 M_ISOFSMNT */ \
194 "ISOFS node", /* 58 M_ISOFSNODE */ \
195 "NFSV3 srvdesc",/* 59 M_NFSRVDESC */ \
196 "NFSV3 diroff", /* 60 M_NFSDIROFF */ \
197 "NFSV3 bigfh", /* 61 M_NFSBIGFH */ \
198 NULL, \
199 NULL, NULL, NULL, NULL, \
200 "MSDOSFS mount",/* 67 M_MSDOSFSMNT */ \
201 "MSDOSFS node", /* 68 M_MSDOSFSNODE */ \
202 "MSDOSFS FAT", /* 69 M_MSDOSFSFAR */ \
203 "DEVFS mount", /* 70 M_DEVFSMNT */ \
204 "DEVFS back", /* 71 M_DEVFSBACK */ \
205 "DEVFS front", /* 72 M_DEVFSFRONT */ \
206 "DEVFS node", /* 73 M_DEVFSNODE */ \
207 "temp", /* 74 M_TEMP */ \
208 "ttys", /* 75 M_TTYS */ \
209 "Gzip trees", /* 76 M_GZIP */ \
210 "IpFw/IpAcct", /* 77 M_IPFW */ \
211 "isa_devlist", /* 78 M_DEVL */ \
212 "PktClass", /* 79 M_PKTCLASS */ \
213 "sysctl", /* 80 M_SYSCTL */ \
214 "key mgmt", /* 81 M_SECA */ \
215 "BIO buffer", /* 82 M_BIOBUF */ \
216 "KTRACE", /* 83 M_KTRACE */ \
217 "select", /* 84 M_SELECT */ \
218 "Coda", /* 85 M_CFS */ \
219 }
220
221 struct kmemstats {
222 long ks_inuse; /* # of packets of this type currently in use */
223 long ks_calls; /* total packets of this type ever allocated */
224 long ks_memuse; /* total memory held in bytes */
225 u_short ks_limblocks; /* number of times blocked for hitting limit */
226 u_short ks_mapblocks; /* number of times blocked for kernel map */
227 long ks_maxused; /* maximum number ever used */
228 long ks_limit; /* most that are allowed to exist */
229 long ks_size; /* sizes of this thing that are allocated */
230 long ks_spare;
231 };
232
233 /*
234 * Array of descriptors that describe the contents of each page
235 */
236 struct kmemusage {
237 short ku_indx; /* bucket index */
238 union {
239 u_short freecnt;/* for small allocations, free pieces in page */
240 u_short pagecnt;/* for large allocations, pages alloced */
241 } ku_un;
242 };
243 #define ku_freecnt ku_un.freecnt
244 #define ku_pagecnt ku_un.pagecnt
245
246 /*
247 * Set of buckets for each size of memory block that is retained
248 */
249 struct kmembuckets {
250 caddr_t kb_next; /* list of free blocks */
251 caddr_t kb_last; /* last free block */
252 long kb_calls; /* total calls to allocate this size */
253 long kb_total; /* total number of blocks allocated */
254 long kb_totalfree; /* # of free elements in this bucket */
255 long kb_elmpercl; /* # of elements in this sized allocation */
256 long kb_highwat; /* high water mark */
257 long kb_couldfree; /* over high water mark and could free */
258 };
259
260 #ifdef KERNEL
261 #define MINALLOCSIZE (1 << MINBUCKET)
262 #define BUCKETINDX(size) \
263 ((size) <= (MINALLOCSIZE * 128) \
264 ? (size) <= (MINALLOCSIZE * 8) \
265 ? (size) <= (MINALLOCSIZE * 2) \
266 ? (size) <= (MINALLOCSIZE * 1) \
267 ? (MINBUCKET + 0) \
268 : (MINBUCKET + 1) \
269 : (size) <= (MINALLOCSIZE * 4) \
270 ? (MINBUCKET + 2) \
271 : (MINBUCKET + 3) \
272 : (size) <= (MINALLOCSIZE* 32) \
273 ? (size) <= (MINALLOCSIZE * 16) \
274 ? (MINBUCKET + 4) \
275 : (MINBUCKET + 5) \
276 : (size) <= (MINALLOCSIZE * 64) \
277 ? (MINBUCKET + 6) \
278 : (MINBUCKET + 7) \
279 : (size) <= (MINALLOCSIZE * 2048) \
280 ? (size) <= (MINALLOCSIZE * 512) \
281 ? (size) <= (MINALLOCSIZE * 256) \
282 ? (MINBUCKET + 8) \
283 : (MINBUCKET + 9) \
284 : (size) <= (MINALLOCSIZE * 1024) \
285 ? (MINBUCKET + 10) \
286 : (MINBUCKET + 11) \
287 : (size) <= (MINALLOCSIZE * 8192) \
288 ? (size) <= (MINALLOCSIZE * 4096) \
289 ? (MINBUCKET + 12) \
290 : (MINBUCKET + 13) \
291 : (size) <= (MINALLOCSIZE * 16384) \
292 ? (MINBUCKET + 14) \
293 : (MINBUCKET + 15))
294
295 /*
296 * Turn virtual addresses into kmem map indices
297 */
298 #define kmemxtob(alloc) (kmembase + (alloc) * PAGE_SIZE)
299 #define btokmemx(addr) (((caddr_t)(addr) - kmembase) / PAGE_SIZE)
300 #define btokup(addr) (&kmemusage[(caddr_t)(addr) - kmembase >> PAGE_SHIFT])
301
302 /*
303 * Macro versions for the usual cases of malloc/free
304 */
305 #if defined(KMEMSTATS) || defined(DIAGNOSTIC)
306 #define MALLOC(space, cast, size, type, flags) \
307 (space) = (cast)malloc((u_long)(size), type, flags)
308 #define FREE(addr, type) free((addr), type)
309
310 #else /* do not collect statistics */
311 #define MALLOC(space, cast, size, type, flags) { \
312 register struct kmembuckets *kbp = &bucket[BUCKETINDX(size)]; \
313 long s = splimp(); \
314 if (kbp->kb_next == NULL) { \
315 (space) = (cast)malloc((u_long)(size), type, flags); \
316 } else { \
317 (space) = (cast)kbp->kb_next; \
318 kbp->kb_next = *(caddr_t *)(space); \
319 } \
320 splx(s); \
321 }
322
323 #define FREE(addr, type) { \
324 register struct kmembuckets *kbp; \
325 register struct kmemusage *kup = btokup(addr); \
326 long s = splimp(); \
327 if (1 << kup->ku_indx > MAXALLOCSAVE) { \
328 free((addr), type); \
329 } else { \
330 kbp = &bucket[kup->ku_indx]; \
331 if (kbp->kb_next == NULL) \
332 kbp->kb_next = (caddr_t)(addr); \
333 else \
334 *(caddr_t *)(kbp->kb_last) = (caddr_t)(addr); \
335 *(caddr_t *)(addr) = NULL; \
336 kbp->kb_last = (caddr_t)(addr); \
337 } \
338 splx(s); \
339 }
340 #endif /* do not collect statistics */
341
342 extern struct kmemstats kmemstats[];
343 extern struct kmemusage *kmemusage;
344 extern char *kmembase;
345 extern struct kmembuckets bucket[];
346
347 void *contigmalloc __P((unsigned long size, int type, int flags,
348 unsigned long low, unsigned long high,
349 unsigned long alignment, unsigned long boundary));
350 void free __P((void *addr, int type));
351 void *malloc __P((unsigned long size, int type, int flags));
352 #endif /* KERNEL */
353
354 #endif /* !_SYS_MALLOC_H_ */
Cache object: 223b62a5d13ac6141df2cbda1050d0c7
|