/* xmalloc.c -- malloc with out of memory checking
- Copyright (C) 1990, 91, 92, 93, 94 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
along with this program; 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
+#if HAVE_CONFIG_H
+# include <config.h>
#endif
#include <sys/types.h>
#if STDC_HEADERS
-#include <stdlib.h>
+# include <stdlib.h>
#else
-VOID *malloc ();
-VOID *realloc ();
+void *calloc ();
+void *malloc ();
+void *realloc ();
void free ();
#endif
-/* This is for other GNU distributions with internationalized messages.
- The GNU C Library itself does not yet support such messages. */
-#if HAVE_LIBINTL_H
-# include <libintl.h>
-#else
-# define gettext(msgid) (msgid)
-#endif
+#include "gettext.h"
+#define _(msgid) gettext (msgid)
+#define N_(msgid) msgid
+
+#include "error.h"
+#include "exitfail.h"
+#include "xalloc.h"
#ifndef EXIT_FAILURE
-#define EXIT_FAILURE 1
+# define EXIT_FAILURE 1
#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;
+/* The following tests require AC_PREREQ(2.54). */
-#if __STDC__ && (HAVE_VPRINTF || HAVE_DOPRNT)
-void error (int, int, const char *, ...);
-#else
-void error ();
+#ifndef HAVE_MALLOC
+"you must run the autoconf test for a GNU libc compatible malloc"
#endif
-static VOID *
-fixup_null_alloc (n)
- size_t n;
-{
- VOID *p;
+#ifndef HAVE_REALLOC
+"you must run the autoconf test for a GNU libc compatible realloc"
+#endif
- p = 0;
- if (n == 0)
- p = malloc ((size_t) 1);
- if (p == 0)
- error (xmalloc_exit_failure, 0, gettext ("Memory exhausted"));
- return p;
+/* 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. */
-VOID *
-xmalloc (n)
- size_t n;
+void *
+xmalloc (size_t n)
{
- VOID *p;
+ void *p;
p = malloc (n);
if (p == 0)
- p = fixup_null_alloc (n);
+ 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. */
+ with error checking. */
-VOID *
-xrealloc (p, n)
- VOID *p;
- size_t n;
+void *
+xrealloc (void *p, size_t n)
{
- if (p == 0)
- return xmalloc (n);
p = realloc (p, n);
if (p == 0)
- p = fixup_null_alloc (n);
+ 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;
}