Subversion Repositories planix.SVN

/* xmalloc.c -- malloc with out of memory checking

   Copyright (C) 1990, 1991, 1993 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., 675 Mass Ave, Cambridge, MA 02139, USA.  */

#ifdef HAVE_CONFIG_H

#include <config.h>

#endif

#if __STDC__

#define VOID void

#else

#define VOID char

#endif

#include <sys/types.h>

#if STDC_HEADERS

#include <stdlib.h>

#else

VOID *malloc ();

VOID *realloc ();

void free ();

#endif

#if __STDC__ && defined (HAVE_VPRINTF)

void error (int, int, char const *, ...);

#else

void error ();

#endif

/* Allocate N bytes of memory dynamically, with error checking.  */

VOID *

xmalloc (n)

     size_t n;

{

  VOID *p;

  p = malloc (n);

  if (p == 0)

    /* Must exit with 2 for `cmp'.  */

    error (2, 0, "memory exhausted");

  return p;

}

/* Change the size of an allocated block of memory P to N bytes,

   with error checking.

   If P is NULL, run xmalloc.

   If N is 0, run free and return NULL.  */

VOID *

xrealloc (p, n)

     VOID *p;

     size_t n;

{

  if (p == 0)

    return xmalloc (n);

  if (n == 0)

    {

      free (p);

      return 0;

    }

  p = realloc (p, n);

  if (p == 0)

    /* Must exit with 2 for `cmp'.  */

    error (2, 0, "memory exhausted");

  return p;

}