--- /dev/null
+#include <stdio.h>
+#include "cds_threads.h"
+
+#include "mcs-lock.h"
+
+/* For data race instrumentation */
+#include "librace.h"
+
+struct mcs_mutex *mutex;
+static uint32_t shared;
+
+void threadA(void *arg)
+{
+// std::this_thread::sleep_for(std::chrono::milliseconds(10));
+ mcs_mutex::guard g(mutex);
+ printf("store: %d\n", 17);
+ store_32(&shared, 17);
+ mutex->unlock(&g);
+ mutex->lock(&g);
+ printf("load: %u\n", load_32(&shared));
+}
+
+void threadB(void *arg)
+{
+// std::this_thread::sleep_for(std::chrono::milliseconds(10));
+ mcs_mutex::guard g(mutex);
+ printf("load: %u\n", load_32(&shared));
+ mutex->unlock(&g);
+ mutex->lock(&g);
+ printf("store: %d\n", 17);
+ store_32(&shared, 17);
+}
+
+int user_main(int argc, char **argv)
+{
+ mutex = new mcs_mutex();
+
+ std::thread A(threadA, (void *)NULL);
+ std::thread B(threadB, (void *)NULL);
+ A.join();
+ B.join();
+ return 0;
+}