1/* xmalloc.c -- safe versions of malloc and realloc */
2
3/* Copyright (C) 1991-2003 Free Software Foundation, Inc.
4
5   This file is part of GNU Readline, a library for reading lines
6   of text with interactive input and history editing.
7
8   Readline is free software; you can redistribute it and/or modify it
9   under the terms of the GNU General Public License as published by the
10   Free Software Foundation; either version 2, or (at your option) any
11   later version.
12
13   Readline is distributed in the hope that it will be useful, but
14   WITHOUT ANY WARRANTY; without even the implied warranty of
15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16   General Public License for more details.
17
18   You should have received a copy of the GNU General Public License
19   along with Readline; see the file COPYING.  If not, write to the Free
20   Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
21
22#if defined (HAVE_CONFIG_H)
23#include <config.h>
24#endif
25
26#include <stdio.h>
27
28#if defined (HAVE_STDLIB_H)
29#  include <stdlib.h>
30#else
31#  include "ansi_stdlib.h"
32#endif /* HAVE_STDLIB_H */
33
34/* Generic pointer type. */
35#ifndef PTR_T
36
37#if defined (__STDC__)
38#  define PTR_T void *
39#else
40#  define PTR_T char *
41#endif
42
43#endif /* PTR_T */
44
45/* **************************************************************** */
46/*								    */
47/*		   Memory Allocation and Deallocation.		    */
48/*								    */
49/* **************************************************************** */
50
51static void
52memory_error_and_abort (fname)
53     char *fname;
54{
55  fprintf (stderr, "%s: out of virtual memory\n", fname);
56  exit (2);
57}
58
59/* Return a pointer to free()able block of memory large enough
60   to hold BYTES number of bytes.  If the memory cannot be allocated,
61   print an error message and abort. */
62PTR_T
63xmalloc (bytes)
64     size_t bytes;
65{
66  PTR_T temp;
67
68  temp = malloc (bytes);
69  if (temp == 0)
70    memory_error_and_abort ("xmalloc");
71  return (temp);
72}
73
74PTR_T
75xrealloc (pointer, bytes)
76     PTR_T pointer;
77     size_t bytes;
78{
79  PTR_T temp;
80
81  temp = pointer ? realloc (pointer, bytes) : malloc (bytes);
82
83  if (temp == 0)
84    memory_error_and_abort ("xrealloc");
85  return (temp);
86}
87
88void
89xfree (string)
90     PTR_T string;
91{
92  if (string)
93    free (string);
94}
95