1 files changed, 43 insertions, 0 deletions
diff --git a/winsup/testsuite/winsup.api/pthread/mutex3.c b/winsup/testsuite/winsup.api/pthread/mutex3.c
new file mode 100644
index 000000000..07e75b187
--- /dev/null
+++ b/winsup/testsuite/winsup.api/pthread/mutex3.c
@@ -0,0 +1,43 @@
+/* 
+ * mutex3.c
+ *
+ * Declare a static mutex object, lock it, trylock it, 
+ * and then unlock it again.
+ *
+ * Depends on API functions: 
+ *	pthread_mutex_lock()
+ *	pthread_mutex_trylock()
+ *	pthread_mutex_unlock()
+ */
+
+#include "test.h"
+ 
+pthread_mutex_t mutex1 = PTHREAD_MUTEX_INITIALIZER;
+
+static int washere = 0;
+
+void * func(void * arg)
+{
+  assert(pthread_mutex_trylock(&mutex1) == EBUSY);
+
+  washere = 1;
+
+  return 0; 
+}
+ 
+int
+main()
+{
+  pthread_t t;
+
+  assert(pthread_mutex_lock(&mutex1) == 0);
+
+  assert(pthread_create(&t, NULL, func, NULL) == 0);
+  assert(pthread_join(t, NULL) == 0);
+
+  assert(pthread_mutex_unlock(&mutex1) == 0);
+
+  assert(washere == 1);
+
+  return 0;
+}