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-rw-r--r--src/gnudiff_xmalloc.cpp88
1 files changed, 88 insertions, 0 deletions
diff --git a/src/gnudiff_xmalloc.cpp b/src/gnudiff_xmalloc.cpp
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+++ b/src/gnudiff_xmalloc.cpp
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+/* xmalloc.c -- malloc with out of memory checking
+
+ Modified for KDiff3 by Joachim Eibl 2003.
+ The original file was part of GNU DIFF.
+
+ Copyright (C) 1990-1999, 2000, 2002 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., 51 Franklin Steet, Fifth Floor, Boston, MA 02110-1301, USA. */
+
+#if HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <sys/types.h>
+
+
+#include <stdlib.h>
+#include <string.h>
+
+
+#ifndef EXIT_FAILURE
+# define EXIT_FAILURE 1
+#endif
+
+#include "gnudiff_diff.h"
+/* If non NULL, call this function when memory is exhausted. */
+//void (*xalloc_fail_func) PARAMS ((void)) = 0;
+void (*xalloc_fail_func)(void) = 0;
+
+
+void GnuDiff::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 *
+GnuDiff::xmalloc (size_t n)
+{
+ void *p;
+
+ p = malloc (n == 0 ? 1 : n); // There are systems where malloc returns 0 for n==0.
+ if (p == 0)
+ xalloc_die ();
+ return p;
+}
+
+/* Change the size of an allocated block of memory P to N bytes,
+ with error checking. */
+
+void *
+GnuDiff::xrealloc (void *p, size_t n)
+{
+ p = realloc (p, n==0 ? 1 : n);
+ if (p == 0)
+ xalloc_die ();
+ return p;
+}
+
+
+/* Yield a new block of SIZE bytes, initialized to zero. */
+
+void *
+GnuDiff::zalloc (size_t size)
+{
+ void *p = xmalloc (size);
+ memset (p, 0, size);
+ return p;
+}