1 /* 2 * Copyright (c) 1987, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 * 7 * @(#)malloc.h 8.3 (Berkeley) 01/12/94 8 */ 9 10 #ifndef _SYS_MALLOC_H_ 11 #define _SYS_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_NQLEASE 47 /* Nqnfs lease */ 72 #define M_NQMHOST 48 /* Nqnfs host address table */ 73 #define M_NETADDR 49 /* Export host address structure */ 74 #define M_NFSSVC 50 /* Nfs server structure */ 75 #define M_NFSUID 51 /* Nfs uid mapping structure */ 76 #define M_NFSD 52 /* Nfs server daemon structure */ 77 #define M_IPMOPTS 53 /* internet multicast options */ 78 #define M_IPMADDR 54 /* internet multicast address */ 79 #define M_IFMADDR 55 /* link-level multicast address */ 80 #define M_MRTABLE 56 /* multicast routing tables */ 81 #define M_ISOFSMNT 57 /* ISOFS mount structure */ 82 #define M_ISOFSNODE 58 /* ISOFS vnode private part */ 83 #define M_TEMP 74 /* misc temporary data buffers */ 84 #define M_LAST 75 /* Must be last type + 1 */ 85 86 #define INITKMEMNAMES { \ 87 "free", /* 0 M_FREE */ \ 88 "mbuf", /* 1 M_MBUF */ \ 89 "devbuf", /* 2 M_DEVBUF */ \ 90 "socket", /* 3 M_SOCKET */ \ 91 "pcb", /* 4 M_PCB */ \ 92 "routetbl", /* 5 M_RTABLE */ \ 93 "hosttbl", /* 6 M_HTABLE */ \ 94 "fragtbl", /* 7 M_FTABLE */ \ 95 "zombie", /* 8 M_ZOMBIE */ \ 96 "ifaddr", /* 9 M_IFADDR */ \ 97 "soopts", /* 10 M_SOOPTS */ \ 98 "soname", /* 11 M_SONAME */ \ 99 "namei", /* 12 M_NAMEI */ \ 100 "gprof", /* 13 M_GPROF */ \ 101 "ioctlops", /* 14 M_IOCTLOPS */ \ 102 "mapmem", /* 15 M_MAPMEM */ \ 103 "cred", /* 16 M_CRED */ \ 104 "pgrp", /* 17 M_PGRP */ \ 105 "session", /* 18 M_SESSION */ \ 106 "iov", /* 19 M_IOV */ \ 107 "mount", /* 20 M_MOUNT */ \ 108 "fhandle", /* 21 M_FHANDLE */ \ 109 "NFS req", /* 22 M_NFSREQ */ \ 110 "NFS mount", /* 23 M_NFSMNT */ \ 111 "NFS node", /* 24 M_NFSNODE */ \ 112 "vnodes", /* 25 M_VNODE */ \ 113 "namecache", /* 26 M_CACHE */ \ 114 "UFS quota", /* 27 M_DQUOT */ \ 115 "UFS mount", /* 28 M_UFSMNT */ \ 116 "shm", /* 29 M_SHM */ \ 117 "VM map", /* 30 M_VMMAP */ \ 118 "VM mapent", /* 31 M_VMMAPENT */ \ 119 "VM object", /* 32 M_VMOBJ */ \ 120 "VM objhash", /* 33 M_VMOBJHASH */ \ 121 "VM pmap", /* 34 M_VMPMAP */ \ 122 "VM pvmap", /* 35 M_VMPVENT */ \ 123 "VM pager", /* 36 M_VMPAGER */ \ 124 "VM pgdata", /* 37 M_VMPGDATA */ \ 125 "file", /* 38 M_FILE */ \ 126 "file desc", /* 39 M_FILEDESC */ \ 127 "lockf", /* 40 M_LOCKF */ \ 128 "proc", /* 41 M_PROC */ \ 129 "subproc", /* 42 M_SUBPROC */ \ 130 "LFS segment", /* 43 M_SEGMENT */ \ 131 "LFS node", /* 44 M_LFSNODE */ \ 132 "FFS node", /* 45 M_FFSNODE */ \ 133 "MFS node", /* 46 M_MFSNODE */ \ 134 "NQNFS Lease", /* 47 M_NQLEASE */ \ 135 "NQNFS Host", /* 48 M_NQMHOST */ \ 136 "Export Host", /* 49 M_NETADDR */ \ 137 "NFS srvsock", /* 50 M_NFSSVC */ \ 138 "NFS uid", /* 51 M_NFSUID */ \ 139 "NFS daemon", /* 52 M_NFSD */ \ 140 "ip_moptions", /* 53 M_IPMOPTS */ \ 141 "in_multi", /* 54 M_IPMADDR */ \ 142 "ether_multi", /* 55 M_IFMADDR */ \ 143 "mrt", /* 56 M_MRTABLE */ \ 144 "ISOFS mount", /* 57 M_ISOFSMNT */ \ 145 "ISOFS node", /* 58 M_ISOFSNODE */ \ 146 NULL, NULL, NULL, NULL, NULL, \ 147 NULL, NULL, NULL, NULL, NULL, \ 148 NULL, NULL, NULL, NULL, NULL, \ 149 "temp", /* 74 M_TEMP */ \ 150 } 151 152 struct kmemstats { 153 long ks_inuse; /* # of packets of this type currently in use */ 154 long ks_calls; /* total packets of this type ever allocated */ 155 long ks_memuse; /* total memory held in bytes */ 156 u_short ks_limblocks; /* number of times blocked for hitting limit */ 157 u_short ks_mapblocks; /* number of times blocked for kernel map */ 158 long ks_maxused; /* maximum number ever used */ 159 long ks_limit; /* most that are allowed to exist */ 160 long ks_size; /* sizes of this thing that are allocated */ 161 long ks_spare; 162 }; 163 164 /* 165 * Array of descriptors that describe the contents of each page 166 */ 167 struct kmemusage { 168 short ku_indx; /* bucket index */ 169 union { 170 u_short freecnt;/* for small allocations, free pieces in page */ 171 u_short pagecnt;/* for large allocations, pages alloced */ 172 } ku_un; 173 }; 174 #define ku_freecnt ku_un.freecnt 175 #define ku_pagecnt ku_un.pagecnt 176 177 /* 178 * Set of buckets for each size of memory block that is retained 179 */ 180 struct kmembuckets { 181 caddr_t kb_next; /* list of free blocks */ 182 caddr_t kb_last; /* last free block */ 183 long kb_calls; /* total calls to allocate this size */ 184 long kb_total; /* total number of blocks allocated */ 185 long kb_totalfree; /* # of free elements in this bucket */ 186 long kb_elmpercl; /* # of elements in this sized allocation */ 187 long kb_highwat; /* high water mark */ 188 long kb_couldfree; /* over high water mark and could free */ 189 }; 190 191 #ifdef KERNEL 192 #define MINALLOCSIZE (1 << MINBUCKET) 193 #define BUCKETINDX(size) \ 194 (size) <= (MINALLOCSIZE * 128) \ 195 ? (size) <= (MINALLOCSIZE * 8) \ 196 ? (size) <= (MINALLOCSIZE * 2) \ 197 ? (size) <= (MINALLOCSIZE * 1) \ 198 ? (MINBUCKET + 0) \ 199 : (MINBUCKET + 1) \ 200 : (size) <= (MINALLOCSIZE * 4) \ 201 ? (MINBUCKET + 2) \ 202 : (MINBUCKET + 3) \ 203 : (size) <= (MINALLOCSIZE* 32) \ 204 ? (size) <= (MINALLOCSIZE * 16) \ 205 ? (MINBUCKET + 4) \ 206 : (MINBUCKET + 5) \ 207 : (size) <= (MINALLOCSIZE * 64) \ 208 ? (MINBUCKET + 6) \ 209 : (MINBUCKET + 7) \ 210 : (size) <= (MINALLOCSIZE * 2048) \ 211 ? (size) <= (MINALLOCSIZE * 512) \ 212 ? (size) <= (MINALLOCSIZE * 256) \ 213 ? (MINBUCKET + 8) \ 214 : (MINBUCKET + 9) \ 215 : (size) <= (MINALLOCSIZE * 1024) \ 216 ? (MINBUCKET + 10) \ 217 : (MINBUCKET + 11) \ 218 : (size) <= (MINALLOCSIZE * 8192) \ 219 ? (size) <= (MINALLOCSIZE * 4096) \ 220 ? (MINBUCKET + 12) \ 221 : (MINBUCKET + 13) \ 222 : (size) <= (MINALLOCSIZE * 16384) \ 223 ? (MINBUCKET + 14) \ 224 : (MINBUCKET + 15) 225 226 /* 227 * Turn virtual addresses into kmem map indicies 228 */ 229 #define kmemxtob(alloc) (kmembase + (alloc) * NBPG) 230 #define btokmemx(addr) (((caddr_t)(addr) - kmembase) / NBPG) 231 #define btokup(addr) (&kmemusage[((caddr_t)(addr) - kmembase) >> CLSHIFT]) 232 233 /* 234 * Macro versions for the usual cases of malloc/free 235 */ 236 #if defined(KMEMSTATS) || defined(DIAGNOSTIC) 237 #define MALLOC(space, cast, size, type, flags) \ 238 (space) = (cast)malloc((u_long)(size), type, flags) 239 #define FREE(addr, type) free((caddr_t)(addr), type) 240 241 #else /* do not collect statistics */ 242 #define MALLOC(space, cast, size, type, flags) { \ 243 register struct kmembuckets *kbp = &bucket[BUCKETINDX(size)]; \ 244 long s = splimp(); \ 245 if (kbp->kb_next == NULL) { \ 246 (space) = (cast)malloc((u_long)(size), type, flags); \ 247 } else { \ 248 (space) = (cast)kbp->kb_next; \ 249 kbp->kb_next = *(caddr_t *)(space); \ 250 } \ 251 splx(s); \ 252 } 253 254 #define FREE(addr, type) { \ 255 register struct kmembuckets *kbp; \ 256 register struct kmemusage *kup = btokup(addr); \ 257 long s = splimp(); \ 258 if (1 << kup->ku_indx > MAXALLOCSAVE) { \ 259 free((caddr_t)(addr), type); \ 260 } else { \ 261 kbp = &bucket[kup->ku_indx]; \ 262 if (kbp->kb_next == NULL) \ 263 kbp->kb_next = (caddr_t)(addr); \ 264 else \ 265 *(caddr_t *)(kbp->kb_last) = (caddr_t)(addr); \ 266 *(caddr_t *)(addr) = NULL; \ 267 kbp->kb_last = (caddr_t)(addr); \ 268 } \ 269 splx(s); \ 270 } 271 #endif /* do not collect statistics */ 272 273 extern struct kmemstats kmemstats[]; 274 extern struct kmemusage *kmemusage; 275 extern char *kmembase; 276 extern struct kmembuckets bucket[]; 277 extern void *malloc __P((unsigned long size, int type, int flags)); 278 extern void free __P((void *addr, int type)); 279 #endif /* KERNEL */ 280 #endif /* !_SYS_MALLOC_H_ */ 281