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 * $FreeBSD$ 35 */ 36 37 #ifndef _SYS_MALLOC_H_ 38 #define _SYS_MALLOC_H_ 39 40 #include <sys/queue.h> 41 #include <sys/_lock.h> 42 #include <sys/_mutex.h> 43 44 #define MINALLOCSIZE UMA_SMALLEST_UNIT 45 46 /* 47 * flags to malloc. 48 */ 49 #define M_NOWAIT 0x0001 /* do not block */ 50 #define M_WAITOK 0x0002 /* do not block */ 51 #define M_ZERO 0x0100 /* bzero the allocation */ 52 #define M_NOVM 0x0200 /* don't ask VM for pages */ 53 #define M_USE_RESERVE 0x0400 /* can alloc out of reserve memory */ 54 55 #define M_MAGIC 877983977 /* time when first defined :-) */ 56 57 struct malloc_type { 58 struct malloc_type *ks_next; /* next in list */ 59 u_long ks_memuse; /* total memory held in bytes */ 60 u_long ks_size; /* sizes of this thing that are allocated */ 61 u_long ks_inuse; /* # of packets of this type currently in use */ 62 uint64_t ks_calls; /* total packets of this type ever allocated */ 63 u_long ks_maxused; /* maximum number ever used */ 64 u_long ks_magic; /* if it's not magic, don't touch it */ 65 const char *ks_shortdesc; /* short description */ 66 struct mtx ks_mtx; /* lock for stats */ 67 }; 68 69 #ifdef _KERNEL 70 #define MALLOC_DEFINE(type, shortdesc, longdesc) \ 71 struct malloc_type type[1] = { \ 72 { NULL, 0, 0, 0, 0, 0, M_MAGIC, shortdesc, {} } \ 73 }; \ 74 SYSINIT(type##_init, SI_SUB_KMEM, SI_ORDER_SECOND, malloc_init, type); \ 75 SYSUNINIT(type##_uninit, SI_SUB_KMEM, SI_ORDER_ANY, malloc_uninit, type) 76 77 #define MALLOC_DECLARE(type) \ 78 extern struct malloc_type type[1] 79 80 MALLOC_DECLARE(M_CACHE); 81 MALLOC_DECLARE(M_DEVBUF); 82 MALLOC_DECLARE(M_TEMP); 83 84 MALLOC_DECLARE(M_IP6OPT); /* for INET6 */ 85 MALLOC_DECLARE(M_IP6NDP); /* for INET6 */ 86 87 /* 88 * Deprecated macro versions of not-quite-malloc() and free(). 89 */ 90 #define MALLOC(space, cast, size, type, flags) \ 91 ((space) = (cast)malloc((u_long)(size), (type), (flags))) 92 #define FREE(addr, type) free((addr), (type)) 93 94 /* 95 * XXX this should be declared in <sys/uio.h>, but that tends to fail 96 * because <sys/uio.h> is included in a header before the source file 97 * has a chance to include <sys/malloc.h> to get MALLOC_DECLARE() defined. 98 */ 99 MALLOC_DECLARE(M_IOV); 100 101 extern struct mtx malloc_mtx; 102 103 /* XXX struct malloc_type is unused for contig*(). */ 104 void contigfree(void *addr, unsigned long size, struct malloc_type *type); 105 void *contigmalloc(unsigned long size, struct malloc_type *type, int flags, 106 unsigned long low, unsigned long high, unsigned long alignment, 107 unsigned long boundary); 108 void free(void *addr, struct malloc_type *type); 109 void *malloc(unsigned long size, struct malloc_type *type, int flags); 110 void malloc_init(void *); 111 int malloc_last_fail(void); 112 void malloc_uninit(void *); 113 void *realloc(void *addr, unsigned long size, struct malloc_type *type, 114 int flags); 115 void *reallocf(void *addr, unsigned long size, struct malloc_type *type, 116 int flags); 117 #endif /* _KERNEL */ 118 119 #endif /* !_SYS_MALLOC_H_ */ 120