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5a34a9f089
mallochash. Mallochash is going to go away as soon as I introduce the kfree/kmalloc api and partially overhaul the malloc wrapper. This can't happen until all users of the malloc api that expect memory to be aligned on the size of the allocation are fixed.
120 lines
4.5 KiB
C
120 lines
4.5 KiB
C
/*
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* Copyright (c) 1987, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)malloc.h 8.5 (Berkeley) 5/3/95
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* $FreeBSD$
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*/
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#ifndef _SYS_MALLOC_H_
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#define _SYS_MALLOC_H_
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#include <vm/uma.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#define splmem splhigh
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#define MINALLOCSIZE UMA_SMALLEST_UNIT
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/*
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* flags to malloc.
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*/
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#define M_WAITOK 0x0000
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#define M_NOWAIT 0x0001 /* do not block */
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#define M_USE_RESERVE 0x0002 /* can alloc out of reserve memory */
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#define M_ZERO 0x0004 /* bzero the allocation */
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#define M_MAGIC 877983977 /* time when first defined :-) */
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struct malloc_type {
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struct malloc_type *ks_next; /* next in list */
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u_long ks_memuse; /* total memory held in bytes */
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u_long ks_size; /* sizes of this thing that are allocated */
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u_long ks_inuse; /* # of packets of this type currently in use */
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uint64_t ks_calls; /* total packets of this type ever allocated */
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u_long ks_maxused; /* maximum number ever used */
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u_long ks_magic; /* if it's not magic, don't touch it */
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const char *ks_shortdesc; /* short description */
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struct mtx ks_mtx; /* Lock for stats */
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};
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extern struct mtx malloc_mtx;
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#ifdef _KERNEL
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#define MALLOC_DEFINE(type, shortdesc, longdesc) \
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struct malloc_type type[1] = { \
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{ NULL, 0, 0, 0, 0, 0, M_MAGIC, shortdesc, {} } \
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}; \
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SYSINIT(type##_init, SI_SUB_KMEM, SI_ORDER_SECOND, malloc_init, type); \
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SYSUNINIT(type##_uninit, SI_SUB_KMEM, SI_ORDER_ANY, malloc_uninit, type)
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#define MALLOC_DECLARE(type) \
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extern struct malloc_type type[1]
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MALLOC_DECLARE(M_CACHE);
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MALLOC_DECLARE(M_DEVBUF);
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MALLOC_DECLARE(M_TEMP);
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MALLOC_DECLARE(M_IP6OPT); /* for INET6 */
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MALLOC_DECLARE(M_IP6NDP); /* for INET6 */
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/*
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* Deprecated macro versions of not-quite-malloc() and free().
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*/
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#define MALLOC(space, cast, size, type, flags) \
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((space) = (cast)malloc((u_long)(size), (type), (flags)))
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#define FREE(addr, type) free((addr), (type))
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/*
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* XXX this should be declared in <sys/uio.h>, but that tends to fail
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* because <sys/uio.h> is included in a header before the source file
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* has a chance to include <sys/malloc.h> to get MALLOC_DECLARE() defined.
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*/
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MALLOC_DECLARE(M_IOV);
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/* XXX struct malloc_type is unused for contig*(). */
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void contigfree(void *addr, unsigned long size, struct malloc_type *type);
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void *contigmalloc(unsigned long size, struct malloc_type *type, int flags,
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unsigned long low, unsigned long high, unsigned long alignment,
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unsigned long boundary);
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void free(void *addr, struct malloc_type *type);
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void *malloc(unsigned long size, struct malloc_type *type, int flags);
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void malloc_init(void *);
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void malloc_uninit(void *);
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void *realloc(void *addr, unsigned long size, struct malloc_type *type,
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int flags);
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void *reallocf(void *addr, unsigned long size, struct malloc_type *type,
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int flags);
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#endif /* _KERNEL */
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#endif /* !_SYS_MALLOC_H_ */
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