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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 | * | |
11 | * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED | |
12 | * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. | |
13 | * | |
14 | * Permission is hereby granted to use or copy this program | |
15 | * for any purpose, provided the above notices are retained on all copies. | |
16 | * Permission to modify the code and to distribute modified code is granted, | |
17 | * provided the above notices are retained, and a notice that the code was | |
18 | * modified is included with the above copyright notice. | |
19 | */ | |
20 | ||
21 | #ifdef __linux__ | |
22 | #include <syscall.h> | |
23 | #endif | |
24 | ||
25 | #if defined(_syscall0) | |
26 | _syscall0(pid_t, gettid) | |
27 | #elif defined(__NR_gettid) | |
28 | #include <unistd.h> | |
29 | static inline pid_t gettid(void) | |
30 | { | |
31 | return syscall(__NR_gettid); | |
32 | } | |
33 | #else | |
34 | #include <sys/types.h> | |
35 | #include <unistd.h> | |
36 | ||
d02d8cf8 | 37 | /* Fall-back on getpid for tid if not available. */ |
49c0da7d MD |
38 | static inline pid_t gettid(void) |
39 | { | |
40 | return getpid(); | |
41 | } | |
42 | #endif | |
43 | ||
44 | #endif /* _LTTNG_UST_TID_H */ |