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Diffstat (limited to 'src/thread/pthread_rwlock_timedrdlock.c')
-rw-r--r--src/thread/pthread_rwlock_timedrdlock.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/src/thread/pthread_rwlock_timedrdlock.c b/src/thread/pthread_rwlock_timedrdlock.c
new file mode 100644
index 00000000..290327de
--- /dev/null
+++ b/src/thread/pthread_rwlock_timedrdlock.c
@@ -0,0 +1,15 @@
+#include "pthread_impl.h"
+
+int pthread_rwlock_timedrdlock(pthread_rwlock_t *rw, const struct timespec *at)
+{
+ int w=0;
+ while (pthread_rwlock_tryrdlock(rw)) {
+ if (!w) a_inc(&rw->__waiters), w++;
+ if (__timedwait(&rw->__wrlock, 1, CLOCK_REALTIME, at, 0)==ETIMEDOUT) {
+ if (w) a_dec(&rw->__waiters);
+ return ETIMEDOUT;
+ }
+ }
+ if (w) a_dec(&rw->__waiters);
+ return 0;
+}