1 files changed, 27 insertions, 0 deletions
diff --git a/test/tsan/bench_local_mutex.cc b/test/tsan/bench_local_mutex.cc
new file mode 100644
index 000000000000..0fa1db0c883c
--- /dev/null
+++ b/test/tsan/bench_local_mutex.cc
@@ -0,0 +1,27 @@
+// RUN: %clangxx_tsan %s -o %t
+// RUN: %run %t 2>&1 | FileCheck %s
+
+#include "bench.h"
+
+pthread_mutex_t *mtx;
+const int kStride = 16;
+
+void thread(int tid) {
+  for (int i = 0; i < bench_niter; i++) {
+    pthread_mutex_lock(&mtx[tid * kStride]);
+    pthread_mutex_unlock(&mtx[tid * kStride]);
+  }
+}
+
+void bench() {
+  mtx = (pthread_mutex_t*)malloc(bench_nthread * kStride * sizeof(*mtx));
+  for (int i = 0; i < bench_nthread; i++) {
+    pthread_mutex_init(&mtx[i * kStride], 0);
+    pthread_mutex_lock(&mtx[i * kStride]);
+    pthread_mutex_unlock(&mtx[i * kStride]);
+  }
+  start_thread_group(bench_nthread, thread);
+}
+
+// CHECK: DONE
+