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/* 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
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