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| author | Vladimir Azarov <avm@intermediate-node.net> | 2024-10-01 15:47:05 +0200 |
|---|---|---|
| committer | Vladimir Azarov <avm@intermediate-node.net> | 2024-10-01 15:47:05 +0200 |
| commit | 4abab5ad6c8465a7528ccdd5f49367da05f78bbd (patch) | |
| tree | ebf009bf1376a5a223a915bc27cbbd791a1316bc /src/thread/mtx_trylock.c | |
Initial version
Diffstat (limited to 'src/thread/mtx_trylock.c')
| -rw-r--r-- | src/thread/mtx_trylock.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/thread/mtx_trylock.c b/src/thread/mtx_trylock.c new file mode 100644 index 0000000..40a8b8c --- /dev/null +++ b/src/thread/mtx_trylock.c @@ -0,0 +1,15 @@ +#include "pthread_impl.h" +#include <threads.h> + +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((pthread_mutex_t *)m); + switch (ret) { + default: return thrd_error; + case 0: return thrd_success; + case EBUSY: return thrd_busy; + } +} |