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authorAn-Cheng Huang <ancheng@vyatta.com>2007-11-12 13:06:02 -0800
committerAn-Cheng Huang <ancheng@vyatta.com>2007-11-12 13:06:02 -0800
commitb7fc9e0f6d6105ba2203f219743d4b269415e84b (patch)
treeef6586dfc62798c2b17487b443864699aca55f31 /xmalloc.c
downloadvyatta-bash-b7fc9e0f6d6105ba2203f219743d4b269415e84b.tar.gz
vyatta-bash-b7fc9e0f6d6105ba2203f219743d4b269415e84b.zip
initial import from bash_3.1dfsg.orig.tar.gz
Diffstat (limited to 'xmalloc.c')
-rw-r--r--xmalloc.c193
1 files changed, 193 insertions, 0 deletions
diff --git a/xmalloc.c b/xmalloc.c
new file mode 100644
index 0000000..93d1928
--- /dev/null
+++ b/xmalloc.c
@@ -0,0 +1,193 @@
+/* xmalloc.c -- safe versions of malloc and realloc */
+
+/* Copyright (C) 1991 Free Software Foundation, Inc.
+
+ This file is part of GNU 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 2, 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; see the file COPYING. If not, write to the Free
+ Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
+
+#if defined (HAVE_CONFIG_H)
+#include <config.h>
+#endif
+
+#include "bashtypes.h"
+#include <stdio.h>
+
+#if defined (HAVE_UNISTD_H)
+# include <unistd.h>
+#endif
+
+#if defined (HAVE_STDLIB_H)
+# include <stdlib.h>
+#else
+# include "ansi_stdlib.h"
+#endif /* HAVE_STDLIB_H */
+
+#include "error.h"
+
+#include "bashintl.h"
+
+#if !defined (PTR_T)
+# if defined (__STDC__)
+# define PTR_T void *
+# else
+# define PTR_T char *
+# endif /* !__STDC__ */
+#endif /* !PTR_T */
+
+#if defined (HAVE_SBRK) && !HAVE_DECL_SBRK
+extern char *sbrk();
+#endif
+
+static PTR_T lbreak;
+static int brkfound;
+static size_t allocated;
+
+/* **************************************************************** */
+/* */
+/* Memory Allocation and Deallocation. */
+/* */
+/* **************************************************************** */
+
+#if defined (HAVE_SBRK)
+static size_t
+findbrk ()
+{
+ if (brkfound == 0)
+ {
+ lbreak = (PTR_T)sbrk (0);
+ brkfound++;
+ }
+ return (char *)sbrk (0) - (char *)lbreak;
+}
+#endif
+
+/* 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)
+ {
+#if defined (HAVE_SBRK)
+ allocated = findbrk ();
+ fatal_error (_("xmalloc: cannot allocate %lu bytes (%lu bytes allocated)"), (unsigned long)bytes, (unsigned long)allocated);
+#else
+ fatal_error (_("xmalloc: cannot allocate %lu bytes"), (unsigned long)bytes);
+#endif /* !HAVE_SBRK */
+ }
+
+ 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)
+ {
+#if defined (HAVE_SBRK)
+ allocated = findbrk ();
+ fatal_error (_("xrealloc: cannot reallocate %lu bytes (%lu bytes allocated)"), (unsigned long)bytes, (unsigned long)allocated);
+#else
+ fatal_error (_("xrealloc: cannot allocate %lu bytes"), (unsigned long)bytes);
+#endif /* !HAVE_SBRK */
+ }
+
+ 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);
+}
+
+#ifdef USING_BASH_MALLOC
+#include <malloc/shmalloc.h>
+
+PTR_T
+sh_xmalloc (bytes, file, line)
+ size_t bytes;
+ char *file;
+ int line;
+{
+ PTR_T temp;
+
+ temp = sh_malloc (bytes, file, line);
+
+ if (temp == 0)
+ {
+#if defined (HAVE_SBRK)
+ allocated = findbrk ();
+ fatal_error (_("xmalloc: %s:%d: cannot allocate %lu bytes (%lu bytes allocated)"), file, line, (unsigned long)bytes, (unsigned long)allocated);
+#else
+ fatal_error (_("xmalloc: %s:%d: cannot allocate %lu bytes"), file, line, (unsigned long)bytes);
+#endif /* !HAVE_SBRK */
+ }
+
+ return (temp);
+}
+
+PTR_T
+sh_xrealloc (pointer, bytes, file, line)
+ PTR_T pointer;
+ size_t bytes;
+ char *file;
+ int line;
+{
+ PTR_T temp;
+
+ temp = pointer ? sh_realloc (pointer, bytes, file, line) : sh_malloc (bytes, file, line);
+
+ if (temp == 0)
+ {
+#if defined (HAVE_SBRK)
+ allocated = findbrk ();
+ fatal_error (_("xrealloc: %s:%d: cannot reallocate %lu bytes (%lu bytes allocated)"), file, line, (unsigned long)bytes, (unsigned long)allocated);
+#else
+ fatal_error (_("xrealloc: %s:%d: cannot allocate %lu bytes"), file, line, (unsigned long)bytes);
+#endif /* !HAVE_SBRK */
+ }
+
+ return (temp);
+}
+
+void
+sh_xfree (string, file, line)
+ PTR_T string;
+ char *file;
+ int line;
+{
+ if (string)
+ sh_free (string, file, line);
+}
+#endif