1 /* $NetBSD: mallocvar.h,v 1.9 2010/04/05 08:03:41 he Exp $ */ 2 3 /* 4 * Copyright (c) 1987, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)malloc.h 8.5 (Berkeley) 5/3/95 32 */ 33 34 #ifndef _SYS_MALLOCVAR_H_ 35 #define _SYS_MALLOCVAR_H_ 36 37 #include <sys/types.h> 38 39 #define M_MAGIC 877983977 40 41 #define MAXBUCKET 15 42 /* 43 * This structure describes a type of malloc'd memory and carries 44 * allocation statistics for that memory. 45 */ 46 struct malloc_type { 47 struct malloc_type *ks_next; /* next in list */ 48 u_long ks_magic; /* indicates valid structure */ 49 const char *ks_shortdesc;/* short description */ 50 51 /* Statistics */ 52 u_long ks_inuse; /* # of packets of this type currently in use */ 53 u_long ks_calls; /* total packets of this type ever allocated */ 54 u_long ks_memuse; /* total memory held in bytes */ 55 u_short ks_limblocks; /* number of times blocked for hitting limit */ 56 u_short ks_mapblocks; /* number of times blocked for kernel map */ 57 u_long ks_maxused; /* maximum number ever used */ 58 u_long ks_limit; /* most that are allowed to exist */ 59 u_long ks_size; /* sizes of this thing that are allocated */ 60 u_short ks_active[MAXBUCKET+1]; /* number of active allocations per size */ 61 }; 62 63 #ifdef _KERNEL 64 #define MALLOC_JUSTDEFINE_LIMIT(type, shortdesc, longdesc, limit) \ 65 struct malloc_type type[1] = { \ 66 [0] = { \ 67 .ks_magic = M_MAGIC, \ 68 .ks_shortdesc = shortdesc, \ 69 .ks_limit = limit, \ 70 }, \ 71 }; 72 73 #define MALLOC_JUSTDEFINE(type, shortdesc, longdesc) \ 74 MALLOC_JUSTDEFINE_LIMIT(type, shortdesc, longdesc, 0) 75 76 #define MALLOC_DEFINE_LIMIT(type, shortdesc, longdesc, limit) \ 77 MALLOC_JUSTDEFINE_LIMIT(type, shortdesc, longdesc, limit) \ 78 __link_set_add_data(malloc_types, type) 79 80 #define MALLOC_DEFINE(type, shortdesc, longdesc) \ 81 MALLOC_DEFINE_LIMIT(type, shortdesc, longdesc, 0) 82 83 #define MALLOC_DECLARE(type) \ 84 extern struct malloc_type type[1] 85 86 void malloc_type_attach(struct malloc_type *); 87 void malloc_type_detach(struct malloc_type *); 88 89 void malloc_type_setlimit(struct malloc_type *, u_long); 90 #endif /* _KERNEL */ 91 92 #endif /* _SYS_MALLOCVAR_H_ */ 93