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author | mtm <mtm@FreeBSD.org> | 2003-12-09 11:12:11 +0000 |
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committer | mtm <mtm@FreeBSD.org> | 2003-12-09 11:12:11 +0000 |
commit | 5f32d90edd66b839d09271c56ca3d2e3ff04624a (patch) | |
tree | 8acaa952bf900222012b86ff5e6540e2feb6b6bc /lib/libthr/thread/thr_spinlock.c | |
parent | bc6b622cf64270f3ae017698e25018a5687802ad (diff) | |
download | FreeBSD-src-5f32d90edd66b839d09271c56ca3d2e3ff04624a.zip FreeBSD-src-5f32d90edd66b839d09271c56ca3d2e3ff04624a.tar.gz |
Fix the wrapper function around signals so that a signal handling
thread on one of the mutex or condition variable queues is removed
from those queues before the real signal handler is called.
Diffstat (limited to 'lib/libthr/thread/thr_spinlock.c')
-rw-r--r-- | lib/libthr/thread/thr_spinlock.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/lib/libthr/thread/thr_spinlock.c b/lib/libthr/thread/thr_spinlock.c index 259977a..322d2e7 100644 --- a/lib/libthr/thread/thr_spinlock.c +++ b/lib/libthr/thread/thr_spinlock.c @@ -64,6 +64,17 @@ _spinlock(spinlock_t *lck) abort(); } +int +_spintrylock(spinlock_t *lck) +{ + int error; + + error = umtx_lock((struct umtx *)lck, curthread->thr_id); + if (error != 0 && error != EBUSY) + abort(); + return (error); +} + /* * Lock a location for the running thread. Yield to allow other * threads to run if this thread is blocked because the lock is |