more data structures

[cdsspec-compiler.git] / benchmark / mcs-lock / mcs-lock.cc

diff --git a/benchmark/mcs-lock/mcs-lock.cc b/benchmark/mcs-lock/mcs-lock.cc
new file mode 100644 (file)
index 0000000..ec0cc5d
--- /dev/null
+++ b/benchmark/mcs-lock/mcs-lock.cc
@@ -0,0 +1,43 @@
+#include <stdio.h>
+#include <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)
+{
+       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)
+{
+       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)
+{
+       thrd_t A, B;
+
+       mutex = new mcs_mutex();
+
+       thrd_create(&A, &threadA, NULL);
+       thrd_create(&B, &threadB, NULL);
+       thrd_join(A);
+       thrd_join(B);
+       return 0;
+}