1 files changed, 28 insertions, 0 deletions
diff --git a/test/tsan/bench_mutex.cc b/test/tsan/bench_mutex.cc
new file mode 100644
index 0000000000000..324d53fd7f28d
--- /dev/null
+++ b/test/tsan/bench_mutex.cc
@@ -0,0 +1,28 @@
+// RUN: %clangxx_tsan %s -o %t
+// RUN: %run %t 2>&1 | FileCheck %s
+
+#include "bench.h"
+
+pthread_mutex_t mtx;
+pthread_cond_t cv;
+int x;
+
+void thread(int tid) {
+  for (int i = 0; i < bench_niter; i++) {
+    pthread_mutex_lock(&mtx);
+    while (x != i * 2 + tid)
+      pthread_cond_wait(&cv, &mtx);
+    x++;
+    pthread_cond_signal(&cv);
+    pthread_mutex_unlock(&mtx);
+  }
+}
+
+void bench() {
+  pthread_mutex_init(&mtx, 0);
+  pthread_cond_init(&cv, 0);
+  start_thread_group(2, thread);
+}
+
+// CHECK: DONE
+