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 7.26 (Berkeley) 09/08/91 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_SUPERBLK 15 /* super block data */ 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_VNODE 24 /* Dynamically allocated vnodes */ 49 #define M_CACHE 25 /* Dynamically allocated cache entries */ 50 #define M_DQUOT 26 /* UFS quota entries */ 51 #define M_UFSMNT 27 /* UFS mount structure */ 52 #define M_MAPMEM 28 /* mapped memory descriptors */ 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_TEMP 49 /* misc temporary data buffers */ 68 #define M_LAST 50 69 70 #define INITKMEMNAMES { \ 71 "free", /* 0 M_FREE */ \ 72 "mbuf", /* 1 M_MBUF */ \ 73 "devbuf", /* 2 M_DEVBUF */ \ 74 "socket", /* 3 M_SOCKET */ \ 75 "pcb", /* 4 M_PCB */ \ 76 "routetbl", /* 5 M_RTABLE */ \ 77 "hosttbl", /* 6 M_HTABLE */ \ 78 "fragtbl", /* 7 M_FTABLE */ \ 79 "zombie", /* 8 M_ZOMBIE */ \ 80 "ifaddr", /* 9 M_IFADDR */ \ 81 "soopts", /* 10 M_SOOPTS */ \ 82 "soname", /* 11 M_SONAME */ \ 83 "namei", /* 12 M_NAMEI */ \ 84 "gprof", /* 13 M_GPROF */ \ 85 "ioctlops", /* 14 M_IOCTLOPS */ \ 86 "superblk", /* 15 M_SUPERBLK */ \ 87 "cred", /* 16 M_CRED */ \ 88 "pgrp", /* 17 M_PGRP */ \ 89 "session", /* 18 M_SESSION */ \ 90 "iov", /* 19 M_IOV */ \ 91 "mount", /* 20 M_MOUNT */ \ 92 "fhandle", /* 21 M_FHANDLE */ \ 93 "NFS req", /* 22 M_NFSREQ */ \ 94 "NFS mount", /* 23 M_NFSMNT */ \ 95 "vnodes", /* 24 M_VNODE */ \ 96 "namecache", /* 25 M_CACHE */ \ 97 "UFS quota", /* 26 M_DQUOT */ \ 98 "UFS mount", /* 27 M_UFSMNT */ \ 99 "mapmem", /* 28 M_MAPMEM */ \ 100 "shm", /* 29 M_SHM */ \ 101 "VM map", /* 30 M_VMMAP */ \ 102 "VM mapent", /* 31 M_VMMAPENT */ \ 103 "VM object", /* 32 M_VMOBJ */ \ 104 "VM objhash", /* 33 M_VMOBJHASH */ \ 105 "VM pmap", /* 34 M_VMPMAP */ \ 106 "VM pvmap", /* 35 M_VMPVENT */ \ 107 "VM pager", /* 36 M_VMPAGER */ \ 108 "VM pgdata", /* 37 M_VMPGDATA */ \ 109 "file", /* 38 M_FILE */ \ 110 "file desc", /* 39 M_FILEDESC */ \ 111 "lockf", /* 40 M_LOCKF */ \ 112 "proc", /* 41 M_PROC */ \ 113 "subproc", /* 42 M_SUBPROC */ \ 114 0, 0, 0, 0, 0, 0, \ 115 "temp", /* 49 M_TEMP */ \ 116 } 117 118 struct kmemstats { 119 long ks_inuse; /* # of packets of this type currently in use */ 120 long ks_calls; /* total packets of this type ever allocated */ 121 long ks_memuse; /* total memory held in bytes */ 122 u_short ks_limblocks; /* number of times blocked for hitting limit */ 123 u_short ks_mapblocks; /* number of times blocked for kernel map */ 124 long ks_maxused; /* maximum number ever used */ 125 long ks_limit; /* most that are allowed to exist */ 126 }; 127 128 /* 129 * Array of descriptors that describe the contents of each page 130 */ 131 struct kmemusage { 132 short ku_indx; /* bucket index */ 133 union { 134 u_short freecnt;/* for small allocations, free pieces in page */ 135 u_short pagecnt;/* for large allocations, pages alloced */ 136 } ku_un; 137 }; 138 #define ku_freecnt ku_un.freecnt 139 #define ku_pagecnt ku_un.pagecnt 140 141 /* 142 * Set of buckets for each size of memory block that is retained 143 */ 144 struct kmembuckets { 145 caddr_t kb_next; /* list of free blocks */ 146 long kb_calls; /* total calls to allocate this size */ 147 long kb_total; /* total number of blocks allocated */ 148 long kb_totalfree; /* # of free elements in this bucket */ 149 long kb_elmpercl; /* # of elements in this sized allocation */ 150 long kb_highwat; /* high water mark */ 151 long kb_couldfree; /* over high water mark and could free */ 152 }; 153 154 #ifdef KERNEL 155 #define MINALLOCSIZE (1 << MINBUCKET) 156 #define BUCKETINDX(size) \ 157 (size) <= (MINALLOCSIZE * 128) \ 158 ? (size) <= (MINALLOCSIZE * 8) \ 159 ? (size) <= (MINALLOCSIZE * 2) \ 160 ? (size) <= (MINALLOCSIZE * 1) \ 161 ? (MINBUCKET + 0) \ 162 : (MINBUCKET + 1) \ 163 : (size) <= (MINALLOCSIZE * 4) \ 164 ? (MINBUCKET + 2) \ 165 : (MINBUCKET + 3) \ 166 : (size) <= (MINALLOCSIZE* 32) \ 167 ? (size) <= (MINALLOCSIZE * 16) \ 168 ? (MINBUCKET + 4) \ 169 : (MINBUCKET + 5) \ 170 : (size) <= (MINALLOCSIZE * 64) \ 171 ? (MINBUCKET + 6) \ 172 : (MINBUCKET + 7) \ 173 : (size) <= (MINALLOCSIZE * 2048) \ 174 ? (size) <= (MINALLOCSIZE * 512) \ 175 ? (size) <= (MINALLOCSIZE * 256) \ 176 ? (MINBUCKET + 8) \ 177 : (MINBUCKET + 9) \ 178 : (size) <= (MINALLOCSIZE * 1024) \ 179 ? (MINBUCKET + 10) \ 180 : (MINBUCKET + 11) \ 181 : (size) <= (MINALLOCSIZE * 8192) \ 182 ? (size) <= (MINALLOCSIZE * 4096) \ 183 ? (MINBUCKET + 12) \ 184 : (MINBUCKET + 13) \ 185 : (size) <= (MINALLOCSIZE * 16384) \ 186 ? (MINBUCKET + 14) \ 187 : (MINBUCKET + 15) 188 189 /* 190 * Turn virtual addresses into kmem map indicies 191 */ 192 #define kmemxtob(alloc) (kmembase + (alloc) * NBPG) 193 #define btokmemx(addr) (((caddr_t)(addr) - kmembase) / NBPG) 194 #define btokup(addr) (&kmemusage[((caddr_t)(addr) - kmembase) >> CLSHIFT]) 195 196 /* 197 * Macro versions for the usual cases of malloc/free 198 */ 199 #if defined(KMEMSTATS) || defined(DIAGNOSTICS) 200 #define MALLOC(space, cast, size, type, flags) \ 201 (space) = (cast)malloc((u_long)(size), type, flags) 202 #define FREE(addr, type) free((caddr_t)(addr), type) 203 204 #else /* do not collect statistics */ 205 #define MALLOC(space, cast, size, type, flags) { \ 206 register struct kmembuckets *kbp = &bucket[BUCKETINDX(size)]; \ 207 long s = splimp(); \ 208 if (kbp->kb_next == NULL) { \ 209 (space) = (cast)malloc((u_long)(size), type, flags); \ 210 } else { \ 211 (space) = (cast)kbp->kb_next; \ 212 kbp->kb_next = *(caddr_t *)(space); \ 213 } \ 214 splx(s); \ 215 } 216 217 #define FREE(addr, type) { \ 218 register struct kmembuckets *kbp; \ 219 register struct kmemusage *kup = btokup(addr); \ 220 long s = splimp(); \ 221 if (1 << kup->ku_indx > MAXALLOCSAVE) { \ 222 free((caddr_t)(addr), type); \ 223 } else { \ 224 kbp = &bucket[kup->ku_indx]; \ 225 *(caddr_t *)(addr) = kbp->kb_next; \ 226 kbp->kb_next = (caddr_t)(addr); \ 227 } \ 228 splx(s); \ 229 } 230 #endif /* do not collect statistics */ 231 232 extern struct kmemstats kmemstats[]; 233 extern struct kmemusage *kmemusage; 234 extern char *kmembase; 235 extern struct kmembuckets bucket[]; 236 extern void *malloc __P((unsigned long size, int type, int flags)); 237 extern void free __P((void *addr, int type)); 238 #endif /* KERNEL */ 239 #endif /* !_MALLOC_H_ */ 240