diff options
| author | Mike Makonnen <mtm@FreeBSD.org> | 2003-05-25 08:48:11 +0000 |
|---|---|---|
| committer | Mike Makonnen <mtm@FreeBSD.org> | 2003-05-25 08:48:11 +0000 |
| commit | d39d651258abd53821436a4c34c176ecfaedae6c (patch) | |
| tree | 79da265fb53834aa5475bf10c54f9f58202ebf91 /lib/libthr/thread/thr_spinlock.c | |
| parent | 4393f2c4ecb1499c83e5a9a9bac0c0ada2871abf (diff) | |
Notes
Diffstat (limited to 'lib/libthr/thread/thr_spinlock.c')
| -rw-r--r-- | lib/libthr/thread/thr_spinlock.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/lib/libthr/thread/thr_spinlock.c b/lib/libthr/thread/thr_spinlock.c index ff9b9e03a7b8..0f9cb6bb5764 100644 --- a/lib/libthr/thread/thr_spinlock.c +++ b/lib/libthr/thread/thr_spinlock.c @@ -69,6 +69,16 @@ _spinlock(spinlock_t *lck) _spinlock_pthread(curthread, lck); } +int +_spintrylock(spinlock_t *lck) +{ + int error; + error = umtx_trylock((struct umtx *)lck, curthread->thr_id); + if (error != 0 && error != EBUSY) + abort(); + return (error); +} + inline void _spinlock_pthread(pthread_t pthread, spinlock_t *lck) { |