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Diffstat (limited to 'src/thread/pthread_rwlock_timedrdlock.c')
-rw-r--r--src/thread/pthread_rwlock_timedrdlock.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/src/thread/pthread_rwlock_timedrdlock.c b/src/thread/pthread_rwlock_timedrdlock.c
index a2b4d446..884b7a1e 100644
--- a/src/thread/pthread_rwlock_timedrdlock.c
+++ b/src/thread/pthread_rwlock_timedrdlock.c
@@ -3,6 +3,13 @@
int pthread_rwlock_timedrdlock(pthread_rwlock_t *restrict rw, const struct timespec *restrict at)
{
int r, t;
+
+ r = pthread_rwlock_tryrdlock(rw);
+ if (r != EBUSY) return r;
+
+ int spins = 100;
+ while (spins-- && rw->_rw_lock) a_spin();
+
while ((r=pthread_rwlock_tryrdlock(rw))==EBUSY) {
if (!(r=rw->_rw_lock) || (r&0x7fffffff)!=0x7fffffff) continue;
t = r | 0x80000000;