aboutsummaryrefslogtreecommitdiffstats
path: root/lib/readline/xmalloc.c
diff options
context:
space:
mode:
Diffstat (limited to 'lib/readline/xmalloc.c')
-rw-r--r--lib/readline/xmalloc.c89
1 files changed, 89 insertions, 0 deletions
diff --git a/lib/readline/xmalloc.c b/lib/readline/xmalloc.c
new file mode 100644
index 0000000..97d8f2e
--- /dev/null
+++ b/lib/readline/xmalloc.c
@@ -0,0 +1,89 @@
+/* xmalloc.c -- safe versions of malloc and realloc */
+
+/* Copyright (C) 1991-2009 Free Software Foundation, Inc.
+
+ This file is part of the GNU Readline Library (Readline), a library
+ for reading lines of text with interactive input and history editing.
+
+ Readline 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 3 of the License, or
+ (at your option) any later version.
+
+ Readline 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 Readline. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#define READLINE_LIBRARY
+
+#if defined (HAVE_CONFIG_H)
+#include <config.h>
+#endif
+
+#include <stdio.h>
+
+#if defined (HAVE_STDLIB_H)
+# include <stdlib.h>
+#else
+# include "ansi_stdlib.h"
+#endif /* HAVE_STDLIB_H */
+
+#include "xmalloc.h"
+
+/* **************************************************************** */
+/* */
+/* Memory Allocation and Deallocation. */
+/* */
+/* **************************************************************** */
+
+static void
+memory_error_and_abort (fname)
+ char *fname;
+{
+ fprintf (stderr, "%s: out of virtual memory\n", fname);
+ exit (2);
+}
+
+/* Return a pointer to free()able block of memory large enough
+ to hold BYTES number of bytes. If the memory cannot be allocated,
+ print an error message and abort. */
+PTR_T
+xmalloc (bytes)
+ size_t bytes;
+{
+ PTR_T temp;
+
+ temp = malloc (bytes);
+ if (temp == 0)
+ memory_error_and_abort ("xmalloc");
+ return (temp);
+}
+
+PTR_T
+xrealloc (pointer, bytes)
+ PTR_T pointer;
+ size_t bytes;
+{
+ PTR_T temp;
+
+ temp = pointer ? realloc (pointer, bytes) : malloc (bytes);
+
+ if (temp == 0)
+ memory_error_and_abort ("xrealloc");
+ return (temp);
+}
+
+/* Use this as the function to call when adding unwind protects so we
+ don't need to know what free() returns. */
+void
+xfree (string)
+ PTR_T string;
+{
+ if (string)
+ free (string);
+}