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authorTon Voon <tonvoon@users.sourceforge.net>2007-01-24 22:47:25 +0000
committerTon Voon <tonvoon@users.sourceforge.net>2007-01-24 22:47:25 +0000
commitfe856aa957978504137c1d425815d4ed8a22be40 (patch)
treea5bb46ce0e64b2056f75700eadbf27aba7c39418 /lib/xalloc.h
parent210f39bc84cfbb21cd72dc054e43f13815ee0616 (diff)
downloadmonitoring-plugins-fe856aa957978504137c1d425815d4ed8a22be40.tar.gz
Sync with gnulib - lots of extraneous code removed in preference to GNU code
git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@1580 f882894a-f735-0410-b71e-b25c423dba1c
Diffstat (limited to 'lib/xalloc.h')
-rw-r--r--lib/xalloc.h79
1 files changed, 0 insertions, 79 deletions
diff --git a/lib/xalloc.h b/lib/xalloc.h
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1/* xalloc.h -- malloc with out-of-memory checking
2
3 Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
4 1999, 2000, 2003, 2004 Free Software Foundation, Inc.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
9 any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software Foundation,
18 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
19
20#ifndef XALLOC_H_
21# define XALLOC_H_
22
23# include <stddef.h>
24
25
26# ifdef __cplusplus
27extern "C" {
28# endif
29
30
31# ifndef __attribute__
32# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 8) || __STRICT_ANSI__
33# define __attribute__(x)
34# endif
35# endif
36
37# ifndef ATTRIBUTE_NORETURN
38# define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
39# endif
40
41/* This function is always triggered when memory is exhausted.
42 It must be defined by the application, either explicitly
43 or by using gnulib's xalloc-die module. This is the
44 function to call when one wants the program to die because of a
45 memory allocation failure. */
46extern void xalloc_die (void) ATTRIBUTE_NORETURN;
47
48void *xmalloc (size_t s);
49void *xnmalloc (size_t n, size_t s);
50void *xzalloc (size_t s);
51void *xcalloc (size_t n, size_t s);
52void *xrealloc (void *p, size_t s);
53void *xnrealloc (void *p, size_t n, size_t s);
54void *x2realloc (void *p, size_t *pn);
55void *x2nrealloc (void *p, size_t *pn, size_t s);
56void *xmemdup (void const *p, size_t s);
57char *xstrdup (char const *str);
58
59/* Return 1 if an array of N objects, each of size S, cannot exist due
60 to size arithmetic overflow. S must be positive and N must be
61 nonnegative. This is a macro, not an inline function, so that it
62 works correctly even when SIZE_MAX < N.
63
64 By gnulib convention, SIZE_MAX represents overflow in size
65 calculations, so the conservative dividend to use here is
66 SIZE_MAX - 1, since SIZE_MAX might represent an overflowed value.
67 However, malloc (SIZE_MAX) fails on all known hosts where
68 sizeof (ptrdiff_t) <= sizeof (size_t), so do not bother to test for
69 exactly-SIZE_MAX allocations on such hosts; this avoids a test and
70 branch when S is known to be 1. */
71# define xalloc_oversized(n, s) \
72 ((size_t) (sizeof (ptrdiff_t) <= sizeof (size_t) ? -1 : -2) / (s) < (n))
73
74# ifdef __cplusplus
75}
76# endif
77
78
79#endif /* !XALLOC_H_ */