/* xmalloc.c -- malloc with out of memory checking
- Copyright (C) 1990, 1991 Free Software Foundation, Inc.
+
+ Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
+ 1999, 2000, 2002, 2003 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
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+ 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 "xalloc.h"
-#ifdef STDC_HEADERS
#include <stdlib.h>
-#else
-char *malloc ();
-char *realloc ();
-void free ();
+
+#include "gettext.h"
+#define _(msgid) gettext (msgid)
+#define N_(msgid) msgid
+
+#include "error.h"
+#include "exit.h"
+#include "exitfail.h"
+
+/* The following tests require AC_PREREQ(2.54). */
+
+#ifndef HAVE_MALLOC
+"you must run the autoconf test for a GNU libc compatible malloc"
+#endif
+
+#ifndef HAVE_REALLOC
+"you must run the autoconf test for a GNU libc compatible realloc"
#endif
-void error ();
+/* If non NULL, call this function when memory is exhausted. */
+void (*xalloc_fail_func) (void) = 0;
+
+/* If XALLOC_FAIL_FUNC is NULL, or does return, display this message
+ before exiting when memory is exhausted. Goes through gettext. */
+char const xalloc_msg_memory_exhausted[] = N_("memory exhausted");
+
+void
+xalloc_die (void)
+{
+ if (xalloc_fail_func)
+ (*xalloc_fail_func) ();
+ error (exit_failure, 0, "%s", _(xalloc_msg_memory_exhausted));
+ /* The `noreturn' cannot be given to error, since it may return if
+ its first argument is 0. To help compilers understand the
+ xalloc_die does terminate, call exit. */
+ exit (EXIT_FAILURE);
+}
/* Allocate N bytes of memory dynamically, with error checking. */
-char *
-xmalloc (n)
- unsigned n;
+void *
+xmalloc (size_t n)
{
- char *p;
+ void *p;
p = malloc (n);
if (p == 0)
- /* Must exit with 2 for `cmp'. */
- error (2, 0, "virtual memory exhausted");
+ xalloc_die ();
return p;
}
/* Change the size of an allocated block of memory P to N bytes,
- with error checking.
- If P is NULL, run xmalloc.
- If N is 0, run free and return NULL. */
-
-char *
-xrealloc (p, n)
- char *p;
- unsigned n;
+ with error checking. */
+
+void *
+xrealloc (void *p, size_t n)
{
- if (p == 0)
- return xmalloc (n);
- if (n == 0)
- {
- free (p);
- return 0;
- }
p = realloc (p, n);
if (p == 0)
- /* Must exit with 2 for `cmp'. */
- error (2, 0, "virtual memory exhausted");
+ xalloc_die ();
+ return p;
+}
+
+/* Allocate memory for N elements of S bytes, with error checking. */
+
+void *
+xcalloc (size_t n, size_t s)
+{
+ void *p;
+
+ p = calloc (n, s);
+ if (p == 0)
+ xalloc_die ();
return p;
}