/* 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);

}