1 /* 2 * Copyright (c) 1987 Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 * 7 * @(#)malloc.h 7.28 (Berkeley) 12/16/91 8 */ 9 10 #ifndef _MALLOC_H_ 11 #define _MALLOC_H_ 12 13 #define KMEMSTATS 14 15 /* 16 * flags to malloc 17 */ 18 #define M_WAITOK 0x0000 19 #define M_NOWAIT 0x0001 20 21 /* 22 * Types of memory to be allocated 23 */ 24 #define M_FREE 0 /* should be on free list */ 25 #define M_MBUF 1 /* mbuf */ 26 #define M_DEVBUF 2 /* device driver memory */ 27 #define M_SOCKET 3 /* socket structure */ 28 #define M_PCB 4 /* protocol control block */ 29 #define M_RTABLE 5 /* routing tables */ 30 #define M_HTABLE 6 /* IMP host tables */ 31 #define M_FTABLE 7 /* fragment reassembly header */ 32 #define M_ZOMBIE 8 /* zombie proc status */ 33 #define M_IFADDR 9 /* interface address */ 34 #define M_SOOPTS 10 /* socket options */ 35 #define M_SONAME 11 /* socket name */ 36 #define M_NAMEI 12 /* namei path name buffer */ 37 #define M_GPROF 13 /* kernel profiling buffer */ 38 #define M_IOCTLOPS 14 /* ioctl data buffer */ 39 #define M_MAPMEM 15 /* mapped memory descriptors */ 40 #define M_CRED 16 /* credentials */ 41 #define M_PGRP 17 /* process group header */ 42 #define M_SESSION 18 /* session header */ 43 #define M_IOV 19 /* large iov's */ 44 #define M_MOUNT 20 /* vfs mount struct */ 45 #define M_FHANDLE 21 /* network file handle */ 46 #define M_NFSREQ 22 /* NFS request header */ 47 #define M_NFSMNT 23 /* NFS mount structure */ 48 #define M_NFSNODE 24 /* NFS vnode private part */ 49 #define M_VNODE 25 /* Dynamically allocated vnodes */ 50 #define M_CACHE 26 /* Dynamically allocated cache entries */ 51 #define M_DQUOT 27 /* UFS quota entries */ 52 #define M_UFSMNT 28 /* UFS mount structure */ 53 #define M_SHM 29 /* SVID compatible shared memory segments */ 54 #define M_VMMAP 30 /* VM map structures */ 55 #define M_VMMAPENT 31 /* VM map entry structures */ 56 #define M_VMOBJ 32 /* VM object structure */ 57 #define M_VMOBJHASH 33 /* VM object hash structure */ 58 #define M_VMPMAP 34 /* VM pmap */ 59 #define M_VMPVENT 35 /* VM phys-virt mapping entry */ 60 #define M_VMPAGER 36 /* XXX: VM pager struct */ 61 #define M_VMPGDATA 37 /* XXX: VM pager private data */ 62 #define M_FILE 38 /* Open file structure */ 63 #define M_FILEDESC 39 /* Open file descriptor table */ 64 #define M_LOCKF 40 /* Byte-range locking structures */ 65 #define M_PROC 41 /* Proc structures */ 66 #define M_SUBPROC 42 /* Proc sub-structures */ 67 #define M_SEGMENT 43 /* Segment for LFS */ 68 #define M_LFSNODE 44 /* LFS vnode private part */ 69 #define M_FFSNODE 45 /* FFS vnode private part */ 70 #define M_MFSNODE 46 /* MFS vnode private part */ 71 #define M_TEMP 74 /* misc temporary data buffers */ 72 #define M_LAST 75 /* Must be last type + 1 */ 73 74 #define INITKMEMNAMES { \ 75 "free", /* 0 M_FREE */ \ 76 "mbuf", /* 1 M_MBUF */ \ 77 "devbuf", /* 2 M_DEVBUF */ \ 78 "socket", /* 3 M_SOCKET */ \ 79 "pcb", /* 4 M_PCB */ \ 80 "routetbl", /* 5 M_RTABLE */ \ 81 "hosttbl", /* 6 M_HTABLE */ \ 82 "fragtbl", /* 7 M_FTABLE */ \ 83 "zombie", /* 8 M_ZOMBIE */ \ 84 "ifaddr", /* 9 M_IFADDR */ \ 85 "soopts", /* 10 M_SOOPTS */ \ 86 "soname", /* 11 M_SONAME */ \ 87 "namei", /* 12 M_NAMEI */ \ 88 "gprof", /* 13 M_GPROF */ \ 89 "ioctlops", /* 14 M_IOCTLOPS */ \ 90 "mapmem", /* 15 M_MAPMEM */ \ 91 "cred", /* 16 M_CRED */ \ 92 "pgrp", /* 17 M_PGRP */ \ 93 "session", /* 18 M_SESSION */ \ 94 "iov", /* 19 M_IOV */ \ 95 "mount", /* 20 M_MOUNT */ \ 96 "fhandle", /* 21 M_FHANDLE */ \ 97 "NFS req", /* 22 M_NFSREQ */ \ 98 "NFS mount", /* 23 M_NFSMNT */ \ 99 "NFS node", /* 24 M_NFSNODE */ \ 100 "vnodes", /* 25 M_VNODE */ \ 101 "namecache", /* 26 M_CACHE */ \ 102 "UFS quota", /* 27 M_DQUOT */ \ 103 "UFS mount", /* 28 M_UFSMNT */ \ 104 "shm", /* 29 M_SHM */ \ 105 "VM map", /* 30 M_VMMAP */ \ 106 "VM mapent", /* 31 M_VMMAPENT */ \ 107 "VM object", /* 32 M_VMOBJ */ \ 108 "VM objhash", /* 33 M_VMOBJHASH */ \ 109 "VM pmap", /* 34 M_VMPMAP */ \ 110 "VM pvmap", /* 35 M_VMPVENT */ \ 111 "VM pager", /* 36 M_VMPAGER */ \ 112 "VM pgdata", /* 37 M_VMPGDATA */ \ 113 "file", /* 38 M_FILE */ \ 114 "file desc", /* 39 M_FILEDESC */ \ 115 "lockf", /* 40 M_LOCKF */ \ 116 "proc", /* 41 M_PROC */ \ 117 "subproc", /* 42 M_SUBPROC */ \ 118 "LFS segment", /* 43 M_SEGMENT */ \ 119 "LFS node", /* 44 M_LFSNODE */ \ 120 "FFS node", /* 45 M_FFSNODE */ \ 121 "MFS node", /* 46 M_MFSNODE */ \ 122 NULL, NULL, NULL, \ 123 NULL, NULL, NULL, NULL, NULL, \ 124 NULL, NULL, NULL, NULL, NULL, \ 125 NULL, NULL, NULL, NULL, NULL, \ 126 NULL, NULL, NULL, NULL, NULL, \ 127 NULL, NULL, NULL, NULL, \ 128 "temp", /* 74 M_TEMP */ \ 129 } 130 131 struct kmemstats { 132 long ks_inuse; /* # of packets of this type currently in use */ 133 long ks_calls; /* total packets of this type ever allocated */ 134 long ks_memuse; /* total memory held in bytes */ 135 u_short ks_limblocks; /* number of times blocked for hitting limit */ 136 u_short ks_mapblocks; /* number of times blocked for kernel map */ 137 long ks_maxused; /* maximum number ever used */ 138 long ks_limit; /* most that are allowed to exist */ 139 }; 140 141 /* 142 * Array of descriptors that describe the contents of each page 143 */ 144 struct kmemusage { 145 short ku_indx; /* bucket index */ 146 union { 147 u_short freecnt;/* for small allocations, free pieces in page */ 148 u_short pagecnt;/* for large allocations, pages alloced */ 149 } ku_un; 150 }; 151 #define ku_freecnt ku_un.freecnt 152 #define ku_pagecnt ku_un.pagecnt 153 154 /* 155 * Set of buckets for each size of memory block that is retained 156 */ 157 struct kmembuckets { 158 caddr_t kb_next; /* list of free blocks */ 159 long kb_calls; /* total calls to allocate this size */ 160 long kb_total; /* total number of blocks allocated */ 161 long kb_totalfree; /* # of free elements in this bucket */ 162 long kb_elmpercl; /* # of elements in this sized allocation */ 163 long kb_highwat; /* high water mark */ 164 long kb_couldfree; /* over high water mark and could free */ 165 }; 166 167 #ifdef KERNEL 168 #define MINALLOCSIZE (1 << MINBUCKET) 169 #define BUCKETINDX(size) \ 170 (size) <= (MINALLOCSIZE * 128) \ 171 ? (size) <= (MINALLOCSIZE * 8) \ 172 ? (size) <= (MINALLOCSIZE * 2) \ 173 ? (size) <= (MINALLOCSIZE * 1) \ 174 ? (MINBUCKET + 0) \ 175 : (MINBUCKET + 1) \ 176 : (size) <= (MINALLOCSIZE * 4) \ 177 ? (MINBUCKET + 2) \ 178 : (MINBUCKET + 3) \ 179 : (size) <= (MINALLOCSIZE* 32) \ 180 ? (size) <= (MINALLOCSIZE * 16) \ 181 ? (MINBUCKET + 4) \ 182 : (MINBUCKET + 5) \ 183 : (size) <= (MINALLOCSIZE * 64) \ 184 ? (MINBUCKET + 6) \ 185 : (MINBUCKET + 7) \ 186 : (size) <= (MINALLOCSIZE * 2048) \ 187 ? (size) <= (MINALLOCSIZE * 512) \ 188 ? (size) <= (MINALLOCSIZE * 256) \ 189 ? (MINBUCKET + 8) \ 190 : (MINBUCKET + 9) \ 191 : (size) <= (MINALLOCSIZE * 1024) \ 192 ? (MINBUCKET + 10) \ 193 : (MINBUCKET + 11) \ 194 : (size) <= (MINALLOCSIZE * 8192) \ 195 ? (size) <= (MINALLOCSIZE * 4096) \ 196 ? (MINBUCKET + 12) \ 197 : (MINBUCKET + 13) \ 198 : (size) <= (MINALLOCSIZE * 16384) \ 199 ? (MINBUCKET + 14) \ 200 : (MINBUCKET + 15) 201 202 /* 203 * Turn virtual addresses into kmem map indicies 204 */ 205 #define kmemxtob(alloc) (kmembase + (alloc) * NBPG) 206 #define btokmemx(addr) (((caddr_t)(addr) - kmembase) / NBPG) 207 #define btokup(addr) (&kmemusage[((caddr_t)(addr) - kmembase) >> CLSHIFT]) 208 209 /* 210 * Macro versions for the usual cases of malloc/free 211 */ 212 #if defined(KMEMSTATS) || defined(DIAGNOSTICS) 213 #define MALLOC(space, cast, size, type, flags) \ 214 (space) = (cast)malloc((u_long)(size), type, flags) 215 #define FREE(addr, type) free((caddr_t)(addr), type) 216 217 #else /* do not collect statistics */ 218 #define MALLOC(space, cast, size, type, flags) { \ 219 register struct kmembuckets *kbp = &bucket[BUCKETINDX(size)]; \ 220 long s = splimp(); \ 221 if (kbp->kb_next == NULL) { \ 222 (space) = (cast)malloc((u_long)(size), type, flags); \ 223 } else { \ 224 (space) = (cast)kbp->kb_next; \ 225 kbp->kb_next = *(caddr_t *)(space); \ 226 } \ 227 splx(s); \ 228 } 229 230 #define FREE(addr, type) { \ 231 register struct kmembuckets *kbp; \ 232 register struct kmemusage *kup = btokup(addr); \ 233 long s = splimp(); \ 234 if (1 << kup->ku_indx > MAXALLOCSAVE) { \ 235 free((caddr_t)(addr), type); \ 236 } else { \ 237 kbp = &bucket[kup->ku_indx]; \ 238 *(caddr_t *)(addr) = kbp->kb_next; \ 239 kbp->kb_next = (caddr_t)(addr); \ 240 } \ 241 splx(s); \ 242 } 243 #endif /* do not collect statistics */ 244 245 extern struct kmemstats kmemstats[]; 246 extern struct kmemusage *kmemusage; 247 extern char *kmembase; 248 extern struct kmembuckets bucket[]; 249 extern void *malloc __P((unsigned long size, int type, int flags)); 250 extern void free __P((void *addr, int type)); 251 #endif /* KERNEL */ 252 #endif /* !_MALLOC_H_ */ 253