projects / lttng-tools.git / blame
| Commit | Line | Data |
|---|---|---|
| ffe60014 DG |
1 | /* |
| 2 | * Copyright 2012 (c) - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
| 3 | * | |
| 4 | * gettid compatibility layer. | |
| 5 | * | |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
| 7 | * of this software and associated documentation files (the "Software"), to | |
| 8 | * deal in the Software without restriction, including without limitation the | |
| 9 | * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or | |
| 10 | * sell copies of the Software, and to permit persons to whom the Software is | |
| 11 | * furnished to do so, subject to the following conditions: | |
| 12 | * | |
| 13 | * The above copyright notice and this permission notice shall be included in | |
| 14 | * all copies or substantial portions of the Software. | |
| 15 | * | |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
| 19 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
| 21 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS | |
| 22 | * IN THE SOFTWARE. | |
| 23 | */ | |
| 24 | ||
| 25 | #ifndef LTTNG_TID_H | |
| 26 | #define LTTNG_TID_H | |
| 27 | ||
| 28 | #ifdef __linux__ | |
| 29 | #include <syscall.h> | |
| 30 | #endif | |
| 31 | ||
| 32 | #if defined(_syscall0) | |
| 33 | _syscall0(pid_t, gettid) | |
| 34 | #elif defined(__NR_gettid) | |
| 35 | #include <unistd.h> | |
| 36 | static inline pid_t gettid(void) | |
| 37 | { | |
| 38 | return syscall(__NR_gettid); | |
| 39 | } | |
| 40 | #else | |
| 41 | #include <sys/types.h> | |
| 42 | #include <unistd.h> | |
| 43 | ||
| 44 | /* Fall-back on getpid for tid if not available. */ | |
| 45 | static inline pid_t gettid(void) | |
| 46 | { | |
| 47 | return getpid(); | |
| 48 | } | |
| 49 | #endif | |
| 50 | ||
| 51 | #endif /* LTTNG_TID_H */ |