Version 2.0.7
[lttng-ust.git] / liblttng-ust / error.h
CommitLineData
8f3f8c99
MD
1#ifndef _LTTNG_ERROR_H
2#define _LTTNG_ERROR_H
3
4/*
5 * Copyright (c) 2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; only
10 * version 2.1 of the License.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22#include <urcu/compiler.h>
23#include <unistd.h>
24
25#define MAX_ERRNO 4095
26
27static inline
28int IS_ERR_VALUE(long value)
29{
30 if (caa_unlikely((unsigned long) value >= (unsigned long) -MAX_ERRNO))
31 return 1;
32 else
33 return 0;
34}
35
36static inline
37void *ERR_PTR(long error)
38{
39 return (void *) error;
40}
41
42static inline
43long PTR_ERR(const void *ptr)
44{
45 return (long) ptr;
46}
47
48static inline
49int IS_ERR(const void *ptr)
50{
51 return IS_ERR_VALUE((long) ptr);
52}
53
54#endif /* _LTTNG_ERROR_H */
This page took 0.024582 seconds and 4 git commands to generate.