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88 lines
2.8 KiB
C
88 lines
2.8 KiB
C
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/* Copyright (c) 2004, Joerg Wunsch
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All rights reserved.
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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 are met:
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* 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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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the
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distribution.
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* Neither the name of the copyright holders nor the names of
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND 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 COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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/* $Id: malloc.h,v 1.1 2006/06/17 22:41:18 adamdunkels Exp $ */
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#ifndef MALLOC_H
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#define MALLOC_H
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#if !defined(__DOXYGEN__)
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struct __freelist {
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size_t sz;
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struct __freelist *nx;
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};
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#endif
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/*
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* Only unlocked memory can be subject to compaction.
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*
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* Malloc and realloc return locked memory.
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*/
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void malloc_unlock(void **h);
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void malloc_lock(void **h);
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void malloc_compact(void);
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void malloc_compact_one(void);
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void *malloc(size_t size);
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void *realloc(void *ptr, size_t size);
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void free(void *ptr);
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extern char *__brkval; /* first location not yet allocated */
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extern struct __freelist *__flp; /* freelist pointer (head of freelist) */
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#define MALLOC_ROUNDUP (sizeof(int) - 1)
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#ifdef MALLOC_TEST
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/*
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* When compiling malloc.c/realloc.c natively on a host machine, it will
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* include a main() that performs a regression test. This is meant as
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* a debugging aid, where a normal source-level debugger will help to
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* verify that the various allocator structures have the desired
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* appearance at each stage.
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*
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*/
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extern void *mymalloc(size_t);
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extern void myfree(void *);
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extern void *myrealloc(void *, size_t);
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#define malloc mymalloc
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#define free myfree
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#define realloc myrealloc
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#define __malloc_heap_start &mymem[0]
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#define __malloc_heap_end &mymem[256]
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extern char mymem[];
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#endif /* MALLOC_TEST */
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#endif /* MALLOC_H */
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