(TYPE_SIGNED, TYPE_MAXIMUM, TYPE_MINIMUM): Define.

[gnulib.git] / lib / xmalloc.c

diff --git a/lib/xmalloc.c b/lib/xmalloc.c
index f989004..696cf3c 100644 (file)
--- a/lib/xmalloc.c
+++ b/lib/xmalloc.c
@@ -1,5 +1,5 @@
 /* xmalloc.c -- malloc with out of memory checking
-   Copyright (C) 1990, 1991 Free Software Foundation, Inc.
+   Copyright (C) 1990-1997, 98, 99 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
@@ -12,54 +12,102 @@
    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
+
+#include <sys/types.h>
+
+#if STDC_HEADERS
+# include <stdlib.h>
 #else
-char *malloc ();
-char *realloc ();
+void *calloc ();
+void *malloc ();
+void *realloc ();
 void free ();
 #endif
 
-void error ();
+#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
+
+#ifndef HAVE_DONE_WORKING_MALLOC_CHECK
+you must run the autoconf test for a properly working malloc -- see malloc.m4
+#endif
+
+#ifndef HAVE_DONE_WORKING_REALLOC_CHECK
+you must run the autoconf test for a properly working realloc -- see realloc.m4
+#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;
+
+/* If non NULL, call this function when memory is exhausted. */
+void (*xalloc_fail_func) () = 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");
+
+static void
+xalloc_fail (void)
+{
+  if (xalloc_fail_func)
+    (*xalloc_fail_func) ();
+  error (xalloc_exit_failure, 0, "%s", _(xalloc_msg_memory_exhausted));
+}
 
 /* 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_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.
-   If N is 0, run free and return NULL.  */
+   If P is NULL, run xmalloc.  */
 
-char *
-xrealloc (p, n)
-     char *p;
-     unsigned n;
+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_fail ();
+  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_fail ();
   return p;
 }