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49c0da7d MD |
1 | #ifndef _LTTNG_UST_TID_H |
2 | #define _LTTNG_UST_TID_H | |
3 | ||
4 | /* | |
5 | * lttng/ust-tid.h | |
6 | * | |
7 | * Copyright 2012 (c) - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
8 | * | |
9 | * gettid compatibility layer. | |
10 | * | |
d2428e87 MD |
11 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
12 | * of this software and associated documentation files (the "Software"), to deal | |
13 | * in the Software without restriction, including without limitation the rights | |
14 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
15 | * copies of the Software, and to permit persons to whom the Software is | |
16 | * furnished to do so, subject to the following conditions: | |
49c0da7d | 17 | * |
d2428e87 MD |
18 | * The above copyright notice and this permission notice shall be included in |
19 | * all copies or substantial portions of the Software. | |
20 | * | |
21 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
22 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
23 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
24 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
25 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
26 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
27 | * SOFTWARE. | |
49c0da7d MD |
28 | */ |
29 | ||
30 | #ifdef __linux__ | |
31 | #include <syscall.h> | |
32 | #endif | |
33 | ||
0f029713 MJ |
34 | #if defined(__NR_gettid) |
35 | ||
49c0da7d | 36 | #include <unistd.h> |
0f029713 | 37 | static inline pid_t lttng_gettid(void) |
49c0da7d MD |
38 | { |
39 | return syscall(__NR_gettid); | |
40 | } | |
0f029713 | 41 | |
49c0da7d | 42 | #else |
0f029713 | 43 | |
49c0da7d MD |
44 | #include <sys/types.h> |
45 | #include <unistd.h> | |
46 | ||
d02d8cf8 | 47 | /* Fall-back on getpid for tid if not available. */ |
0f029713 | 48 | static inline pid_t lttng_gettid(void) |
49c0da7d MD |
49 | { |
50 | return getpid(); | |
51 | } | |
0f029713 | 52 | |
49c0da7d MD |
53 | #endif |
54 | ||
55 | #endif /* _LTTNG_UST_TID_H */ |