Implement both pthread_yield and c++ thread yield

diff --git a/pthread.cc b/pthread.cc
index d6067eb20fdafb70f04a8378150ba479f3465fd8..4b5e3d37963dc3887bcfa24d764375c4d479f654 100644 (file)
--- a/pthread.cc
+++ b/pthread.cc
@@ -52,6 +52,12 @@ int pthread_detach(pthread_t t) {
        return 0;
 }
 
+/* Take care of both pthread_yield and c++ thread yield */
+int sched_yield() {
+       model->switch_to_master(new ModelAction(THREAD_YIELD, std::memory_order_seq_cst, thread_current(), VALUE_NONE));
+       return 0;
+}
+
 void pthread_exit(void *value_ptr) {
        Thread * th = thread_current();
        th->set_pthread_return(value_ptr);