1 files changed, 44 insertions, 0 deletions
diff --git a/tests/rwlock4.c b/tests/rwlock4.c
new file mode 100644
index 0000000..07e4cff
--- /dev/null
+++ b/tests/rwlock4.c
@@ -0,0 +1,44 @@
+/* 
+ * rwlock3.c
+ *
+ * Declare a static rwlock object, rdlock it, trywrlock it, 
+ * and then unlock it again.
+ *
+ * Depends on API functions: 
+ *	pthread_rwlock_rdlock()
+ *	pthread_rwlock_trywrlock()
+ *	pthread_rwlock_unlock()
+ */
+
+#include "test.h"
+ 
+pthread_rwlock_t rwlock1 = PTHREAD_RWLOCK_INITIALIZER;
+
+static int washere = 0;
+
+void * func(void * arg)
+{
+  assert(pthread_rwlock_trywrlock(&rwlock1) == EBUSY);
+
+  washere = 1;
+
+  return 0; 
+}
+ 
+int
+main()
+{
+  pthread_t t;
+
+  assert(pthread_rwlock_rdlock(&rwlock1) == 0);
+
+  assert(pthread_create(&t, NULL, func, NULL) == 0);
+
+  Sleep(2000);
+
+  assert(pthread_rwlock_unlock(&rwlock1) == 0);
+
+  assert(washere == 1);
+
+  return 0;
+}