1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
|
/* xmalloc.c -- malloc with out of memory checking
Copyright (C) 1990-1999, 2000, 2002, 2003 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#if HAVE_CONFIG_H
# include <config.h>
#endif
#include <sys/types.h>
#if STDC_HEADERS
# include <stdlib.h>
#else
void *calloc ();
void *malloc ();
void *realloc ();
void free ();
#endif
#include "gettext.h"
#define _(msgid) gettext (msgid)
#define N_(msgid) msgid
#include "error.h"
#include "xalloc.h"
#ifndef EXIT_FAILURE
# define EXIT_FAILURE 1
#endif
/* The following tests require AC_PREREQ(2.54). */
#ifndef HAVE_MALLOC
"you must run the autoconf test for a GNU libc compatible malloc"
#endif
#ifndef HAVE_REALLOC
"you must run the autoconf test for a GNU libc compatible realloc"
#endif
/* Exit value when the requested amount of memory is not available.
The caller may set it to some other value. */
int xalloc_exit_failure = EXIT_FAILURE;
/* If non NULL, call this function when memory is exhausted. */
void (*xalloc_fail_func) (void) = 0;
/* If XALLOC_FAIL_FUNC is NULL, or does return, display this message
before exiting when memory is exhausted. Goes through gettext. */
char const xalloc_msg_memory_exhausted[] = N_("memory exhausted");
void
xalloc_die (void)
{
if (xalloc_fail_func)
(*xalloc_fail_func) ();
error (xalloc_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 *
xmalloc (size_t n)
{
void *p;
p = malloc (n);
if (p == 0)
xalloc_die ();
return p;
}
/* Change the size of an allocated block of memory P to N bytes,
with error checking. */
void *
xrealloc (void *p, size_t n)
{
p = realloc (p, n);
if (p == 0)
xalloc_die ();
return p;
}
/* Allocate memory for N elements of S bytes, with error checking. */
void *
xcalloc (size_t n, size_t s)
{
void *p;
p = calloc (n, s);
if (p == 0)
xalloc_die ();
return p;
}
|
