tsan: add another deadlock detector benchmark

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@202366 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 29 insertions, 0 deletions

diff --git a/test/tsan/deadlock_detector_stress_test.cc b/test/tsan/deadlock_detector_stress_test.cc
index 053fe690e..975f06663 100644
--- a/test/tsan/deadlock_detector_stress_test.cc
+++ b/test/tsan/deadlock_detector_stress_test.cc
@@ -313,6 +313,34 @@ class LockTest {
     }
   }
 
+  void Test11() {
+    if (test_number > 0 && test_number != 11) return;
+    fprintf(stderr, "Starting Test11: 4 threads lock/unlock 4 private mutexes, all under another private mutex\n");
+    // CHECK: Starting Test10
+    Init(500);
+    // CHECK-NOT: WARNING: ThreadSanitizer:
+    RunThreads(&LockTest::Test11_Thread1, &LockTest::Test11_Thread2,
+               &LockTest::Test11_Thread3, &LockTest::Test11_Thread4);
+  }
+  void Test11_Thread1() { Test10_Thread(0); }
+  void Test11_Thread2() { Test10_Thread(10); }
+  void Test11_Thread3() { Test10_Thread(20); }
+  void Test11_Thread4() { Test10_Thread(30); }
+  void Test11_Thread(size_t m) {
+    for (int i = 0; i < iter_count; i++) {
+      L(m);
+      L(m + 100);
+      U(m + 100);
+      L(m + 200);
+      U(m + 200);
+      L(m + 300);
+      U(m + 300);
+      L(m + 400);
+      U(m + 500);
+      U(m);
+    }
+  }
+
  private:
   void Lock2(size_t l1, size_t l2) { L(l1); L(l2); U(l2); U(l1); }
   void Lock_0_1() { Lock2(0, 1); }
@@ -387,6 +415,7 @@ int main(int argc, char **argv) {
   LockTest().Test8();
   LockTest().Test9();
   LockTest().Test10();
+  LockTest().Test11();
   fprintf(stderr, "ALL-DONE\n");
   // CHECK: ALL-DONE
 }