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/* xmalloc.c -- malloc with out of memory checking
Copyright (C) 1990,91,92,93,94,95,96,97 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#if __STDC__
#define VOID void
#else
#define VOID char
#endif
#include <sys/types.h>
#if STDC_HEADERS || _LIBC
#include <stdlib.h>
static VOID *fixup_null_alloc __P ((size_t n));
VOID *xmalloc __P ((size_t n));
VOID *xcalloc __P ((size_t n, size_t s));
VOID *xrealloc __P ((VOID *p, size_t n));
#else
VOID *calloc ();
VOID *malloc ();
VOID *realloc ();
void free ();
#endif
#include <libintl.h>
#include "error.h"
#ifndef _
# define _(str) gettext (str)
#endif
#ifndef EXIT_FAILURE
#define EXIT_FAILURE 4
#endif
/* Exit value when the requested amount of memory is not available.
The caller may set it to some other value. */
int xmalloc_exit_failure = EXIT_FAILURE;
static VOID *
fixup_null_alloc (n)
size_t n;
{
VOID *p;
p = 0;
if (n == 0)
p = malloc ((size_t) 1);
if (p == 0)
error (xmalloc_exit_failure, 0, _("memory exhausted"));
return p;
}
/* Allocate N bytes of memory dynamically, with error checking. */
VOID *
xmalloc (n)
size_t n;
{
VOID *p;
p = malloc (n);
if (p == 0)
p = fixup_null_alloc (n);
return p;
}
/* Allocate memory for N elements of S bytes, with error checking. */
VOID *
xcalloc (n, s)
size_t n, s;
{
VOID *p;
p = calloc (n, s);
if (p == 0)
p = fixup_null_alloc (n);
return p;
}
/* Change the size of an allocated block of memory P to N bytes,
with error checking.
If P is NULL, run xmalloc. */
VOID *
xrealloc (p, n)
VOID *p;
size_t n;
{
if (p == 0)
return xmalloc (n);
p = realloc (p, n);
if (p == 0)
p = fixup_null_alloc (n);
return p;
}
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