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
|
/*
* Copyright (C) 2012-2014 Skylable Ltd. <info-copyright@skylable.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#ifndef GNUC_H
#define GNUC_H
#ifdef __GNUC__
#define FMT_PRINTF(idxfmt, idxva) __attribute__((format(printf, idxfmt, idxva)))
#define NORETURN __attribute__((__noreturn__))
#if __GNUC__ >= 4
#if __GNUC_MINOR__ >= 5 && !defined(_GLIBCXX_DEBUG)
#define UNREACHABLE __builtin_unreachable()
#endif
#if __GNUC_MINOR__ >= 3
#define COLD __attribute__((cold))
#else
#define COLD
#endif
#define LIKELY(e) __builtin_expect(!!(e), 1)
#define UNLIKELY(e) __builtin_expect(!!(e), 0)
#else
#define COLD
#define LIKELY(e) (e)
#define UNLIKELY(e) (e)
#endif
#ifndef UNREACHABLE
#define UNREACHABLE unreachable()
#endif
#else
#define FMT_PRINTF(idxfmt, idxva)
#define COLD
#define NORETURN
#define LIKELY(e) (e)
#define UNLIKELY(e) (e)
#endif
#ifdef __cplusplus
#ifdef __GNUC__
#define PRETTYFUNC __PRETTY_FUNCTION__
#define FUNC __func__
#else
#define PRETTYFUNC ""
#define FUNC ""
#endif
#endif
void unreachable(void) NORETURN;
#endif
|
