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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;
}
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