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/*
* Memory allocation routines with error checking. Idea from GNU libiberty.
*
* Copyright (C) 2001-2007 Peter Johnson
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND OTHER CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR OTHER CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "util.h"
RCSID("$Id: xmalloc.c 2101 2008-05-23 06:46:51Z peter $");
#include "coretype.h"
#include "errwarn.h"
#ifdef WITH_DMALLOC
#undef yasm_xmalloc
#undef yasm_xcalloc
#undef yasm_xrealloc
#undef yasm_xfree
#endif
static /*@only@*/ /*@out@*/ void *def_xmalloc(size_t size);
static /*@only@*/ void *def_xcalloc(size_t nelem, size_t elsize);
static /*@only@*/ void *def_xrealloc
(/*@only@*/ /*@out@*/ /*@returned@*/ /*@null@*/ void *oldmem, size_t size)
/*@modifies oldmem@*/;
static void def_xfree(/*@only@*/ /*@out@*/ /*@null@*/ void *p)
/*@modifies p@*/;
/* storage for global function pointers */
YASM_LIB_DECL
/*@only@*/ /*@out@*/ void * (*yasm_xmalloc) (size_t size) = def_xmalloc;
YASM_LIB_DECL
/*@only@*/ void * (*yasm_xcalloc) (size_t nelem, size_t elsize) = def_xcalloc;
YASM_LIB_DECL
/*@only@*/ void * (*yasm_xrealloc)
(/*@only@*/ /*@out@*/ /*@returned@*/ /*@null@*/ void *oldmem, size_t size)
/*@modifies oldmem@*/ = def_xrealloc;
YASM_LIB_DECL
void (*yasm_xfree) (/*@only@*/ /*@out@*/ /*@null@*/ void *p)
/*@modifies p@*/ = def_xfree;
static void *
def_xmalloc(size_t size)
{
void *newmem;
if (size == 0)
size = 1;
newmem = malloc(size);
if (!newmem)
yasm__fatal(N_("out of memory"));
return newmem;
}
static void *
def_xcalloc(size_t nelem, size_t elsize)
{
void *newmem;
if (nelem == 0 || elsize == 0)
nelem = elsize = 1;
newmem = calloc(nelem, elsize);
if (!newmem)
yasm__fatal(N_("out of memory"));
return newmem;
}
static void *
def_xrealloc(void *oldmem, size_t size)
{
void *newmem;
if (size == 0)
size = 1;
if (!oldmem)
newmem = malloc(size);
else
newmem = realloc(oldmem, size);
if (!newmem)
yasm__fatal(N_("out of memory"));
return newmem;
}
static void
def_xfree(void *p)
{
if (!p)
return;
free(p);
}
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