/* xmalloc.c -- malloc with out of memory checking
- Copyright (C) 1990, 1991 Free Software Foundation, Inc.
+ Copyright (C) 1990, 91, 92, 93, 94, 95, 96 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. */
-#ifdef STDC_HEADERS
-#include <stdlib.h>
+#if HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#if __STDC__
+# define VOID void
#else
-char *malloc ();
-char *realloc ();
+# define VOID char
+#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
+
+#include "error.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 xmalloc_exit_failure = EXIT_FAILURE;
+
+#if __STDC__ && (HAVE_VPRINTF || HAVE_DOPRNT)
+void error (int, int, const char *, ...);
+#else
void error ();
+#endif
+
+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. */
-char *
+VOID *
xmalloc (n)
- unsigned n;
+ 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");
+ 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.
- If N is 0, run free and return NULL. */
+ If P is NULL, run xmalloc. */
-char *
+VOID *
xrealloc (p, n)
- char *p;
- unsigned n;
+ 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");
+ p = fixup_null_alloc (n);
return p;
}