116 lines
3.3 KiB
C
116 lines
3.3 KiB
C
/*
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* Memory allocation routines with error checking. Idea from GNU libiberty.
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*
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* Copyright (C) 2001-2007 Peter Johnson
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND OTHER 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 AUTHOR OR OTHER 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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#include "util.h"
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RCSID("$Id: xmalloc.c 2101 2008-05-23 06:46:51Z peter $");
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#include "coretype.h"
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#include "errwarn.h"
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#ifdef WITH_DMALLOC
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#undef yasm_xmalloc
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#undef yasm_xcalloc
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#undef yasm_xrealloc
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#undef yasm_xfree
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#endif
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static /*@only@*/ /*@out@*/ void *def_xmalloc(size_t size);
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static /*@only@*/ void *def_xcalloc(size_t nelem, size_t elsize);
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static /*@only@*/ void *def_xrealloc
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(/*@only@*/ /*@out@*/ /*@returned@*/ /*@null@*/ void *oldmem, size_t size)
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/*@modifies oldmem@*/;
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static void def_xfree(/*@only@*/ /*@out@*/ /*@null@*/ void *p)
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/*@modifies p@*/;
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/* storage for global function pointers */
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YASM_LIB_DECL
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/*@only@*/ /*@out@*/ void * (*yasm_xmalloc) (size_t size) = def_xmalloc;
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YASM_LIB_DECL
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/*@only@*/ void * (*yasm_xcalloc) (size_t nelem, size_t elsize) = def_xcalloc;
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YASM_LIB_DECL
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/*@only@*/ void * (*yasm_xrealloc)
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(/*@only@*/ /*@out@*/ /*@returned@*/ /*@null@*/ void *oldmem, size_t size)
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/*@modifies oldmem@*/ = def_xrealloc;
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YASM_LIB_DECL
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void (*yasm_xfree) (/*@only@*/ /*@out@*/ /*@null@*/ void *p)
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/*@modifies p@*/ = def_xfree;
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static void *
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def_xmalloc(size_t size)
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{
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void *newmem;
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if (size == 0)
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size = 1;
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newmem = malloc(size);
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if (!newmem)
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yasm__fatal(N_("out of memory"));
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return newmem;
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}
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static void *
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def_xcalloc(size_t nelem, size_t elsize)
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{
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void *newmem;
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if (nelem == 0 || elsize == 0)
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nelem = elsize = 1;
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newmem = calloc(nelem, elsize);
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if (!newmem)
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yasm__fatal(N_("out of memory"));
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return newmem;
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}
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static void *
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def_xrealloc(void *oldmem, size_t size)
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{
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void *newmem;
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if (size == 0)
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size = 1;
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if (!oldmem)
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newmem = malloc(size);
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else
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newmem = realloc(oldmem, size);
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if (!newmem)
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yasm__fatal(N_("out of memory"));
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return newmem;
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}
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static void
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def_xfree(void *p)
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{
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if (!p)
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return;
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free(p);
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}
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