From 0b44a0315b47dd8eced9f3b7f31580cf14bbfc01 Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Sat, 12 Feb 2011 00:22:29 -0500 Subject: initial check-in, version 0.5.0 --- src/thread/pthread_rwlock_unlock.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) create mode 100644 src/thread/pthread_rwlock_unlock.c (limited to 'src/thread/pthread_rwlock_unlock.c') diff --git a/src/thread/pthread_rwlock_unlock.c b/src/thread/pthread_rwlock_unlock.c new file mode 100644 index 00000000..f39117e7 --- /dev/null +++ b/src/thread/pthread_rwlock_unlock.c @@ -0,0 +1,17 @@ +#include "pthread_impl.h" + +int pthread_rwlock_unlock(pthread_rwlock_t *rw) +{ + struct pthread *self = pthread_self(); + if (rw->__owner == self->tid) { + rw->__owner = 0; + a_store(&rw->__wrlock, 0); + if (rw->__waiters) + __wake(&rw->__wrlock, -1, 0); + return 0; + } + a_dec(&rw->__readers); + if (rw->__waiters && !rw->__readers) + __wake(&rw->__readers, 1, 0); + return 0; +} -- cgit 1.4.1