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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 program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#if HAVE_CONFIG_H
# include <config.h>
#endif
#include <sys/types.h>
#if STDC_HEADERS
# include <stdlib.h>
#else
void *calloc ();
void *malloc ();
void *realloc ();
void free ();
#endif
#if ENABLE_NLS
# include <libintl.h>
# define _(Text) gettext (Text)
#else
# define textdomain(Domain)
# define _(Text) Text
#endif
#define N_(Text) Text
#include "error.h"
#include "xalloc.h"
#ifndef EXIT_FAILURE
# define EXIT_FAILURE 1
#endif
/* Prototypes for functions defined here. */
#if defined (__STDC__) && __STDC__
static void *fixup_null_alloc (size_t n);
void *xmalloc (size_t n);
void *xcalloc (size_t n, size_t s);
void *xrealloc (void *p, size_t n);
#endif
/* Exit value when the requested amount of memory is not available.
The caller may set it to some other value. */
int xalloc_exit_failure = EXIT_FAILURE;
/* FIXME: describe */
char *const xalloc_msg_memory_exhausted = N_("Memory exhausted");
/* FIXME: describe */
void (*xalloc_fail_func) () = 0;
#if __STDC__ && (HAVE_VPRINTF || HAVE_DOPRNT)
void error (int, int, const char *, ...);
#else
void error ();
#endif
static void
xalloc_fail ()
{
if (xalloc_fail_func)
(*xalloc_fail_func) ();
error (xalloc_exit_failure, 0, xalloc_msg_memory_exhausted);
}
/* Allocate N bytes of memory dynamically, with error checking. */
void *
xmalloc (n)
size_t n;
{
void *p;
p = malloc (n);
if (p == 0)
xalloc_fail ();
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;
{
p = realloc (p, n);
if (p == 0)
xalloc_fail ();
return p;
}
#ifdef NOT_USED
/* 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;
}
#endif /* NOT_USED */
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