RTEMS CPU Kit with SuperCore
libnetworking/sys/malloc.h
Go to the documentation of this file.
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  */
35 
36 #ifndef _SYS_MALLOC_H_
37 #define _SYS_MALLOC_H_
38 
39 #include <rtems/rtems_bsdnet_internal.h> /* Ensure we get RTEMS malloc hooks */
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 free (void *addr, int type);
348 void *malloc (size_t size, int type, int flags);
349 /* standard realloc but we cannot include stdlib.h */
350 void *realloc(void * __r, size_t __size);
351 
352 #endif /* _KERNEL */
353 
354 #endif /* !_SYS_MALLOC_H_ */
rtems_bsdnet_internal.h
kmembuckets
Definition: libnetworking/sys/malloc.h:250
Generated by   doxygen 1.8.13