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1d1df11d | 1 | /* This file is part of the Linux Trace Toolkit trace reading library |
2 | * Copyright (C) 2003-2004 Mathieu Desnoyers | |
3 | * | |
4 | * This library is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU Lesser General Public | |
6 | * License Version 2.1 as published by the Free Software Foundation. | |
7 | * | |
8 | * This library is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
11 | * Lesser General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU Lesser General Public | |
14 | * License along with this library; if not, write to the | |
15 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
16 | * Boston, MA 02111-1307, USA. | |
17 | */ | |
18 | ||
19 | #ifndef COMPILER_H | |
20 | #define COMPILER_H | |
21 | ||
7a4bdb54 YB |
22 | #error "Using old ltt/" |
23 | ||
1d1df11d | 24 | /* Fast prediction if likely branches */ |
25 | #define likely(x) __builtin_expect(!!(x), 1) | |
26 | #define unlikely(x) __builtin_expect(!!(x), 0) | |
27 | ||
2ac312e3 | 28 | |
29 | /* | |
30 | * Check at compile time that something is of a particular type. | |
31 | * Always evaluates to 1 so you may use it easily in comparisons. | |
32 | */ | |
33 | #define typecheck(type,x) \ | |
34 | ({ type __dummy; \ | |
35 | typeof(x) __dummy2; \ | |
36 | (void)(&__dummy == &__dummy2); \ | |
37 | 1; \ | |
38 | }) | |
39 | ||
40 | /* Deal with 32 wrap correctly */ | |
41 | #define guint32_after(a,b) \ | |
42 | (typecheck(guint32, a) && \ | |
43 | typecheck(guint32, b) && \ | |
44 | ((gint32)(b) - (gint32)(a) < 0)) | |
45 | #define guint32_before(a,b) guint32_after(b,a) | |
46 | ||
47 | #define guint32_after_eq(a,b) \ | |
48 | (typecheck(guint32, a) && \ | |
49 | typecheck(guint32, b) && \ | |
50 | ((gint32)(b) - (gint32)(a) <= 0)) | |
51 | #define guint32_before_eq(a,b) guint32_after_eq(b,a) | |
52 | ||
f9240312 | 53 | #define __EXPORT __attribute__ ((visibility ("default"))) |
2ac312e3 | 54 | |
1d1df11d | 55 | #endif //COMPILER_H |