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| author | Jens Gustedt <Jens.Gustedt@inria.fr> | 2014-09-06 22:07:22 -0400 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2014-09-06 22:07:22 -0400 |
| commit | 8b0472932c1cb8cb2cc46322b21c0c4e21848522 (patch) | |
| tree | a2c72eb0d39458bd87c4dc8b4810813d1b8a1819 /src/thread/mtx_trylock.c | |
| parent | e16f70f45210294321a88f23c85ac45046577adc (diff) | |
| download | musl-8b0472932c1cb8cb2cc46322b21c0c4e21848522.tar.gz | |
add C11 mutex functions
Diffstat (limited to 'src/thread/mtx_trylock.c')
| -rw-r--r-- | src/thread/mtx_trylock.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/thread/mtx_trylock.c b/src/thread/mtx_trylock.c new file mode 100644 index 00000000..61e7694e --- /dev/null +++ b/src/thread/mtx_trylock.c @@ -0,0 +1,17 @@ +#include "pthread_impl.h" +#include <threads.h> + +int __pthread_mutex_trylock(mtx_t *); + +int mtx_trylock(mtx_t *m) +{ + if (m->_m_type == PTHREAD_MUTEX_NORMAL) + return (a_cas(&m->_m_lock, 0, EBUSY) & EBUSY) ? thrd_busy : thrd_success; + + int ret = __pthread_mutex_trylock(m); + switch (ret) { + default: return thrd_error; + case 0: return thrd_success; + case EBUSY: return thrd_busy; + } +} |