Test Runner: Fix dirty thread teardown.

When the standalone tests shut down they would not wait for the watchdog thread to exit cleanly. Fix this by setting a flag that shuts down the watchdog and attempting to wait. This was detected by running angle_end2end_tests with TSAN. Bug: angleproject:3162 Bug: b/168744561 Change-Id: I765ce7a21c3be11703619470a81adb1882b009e4 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2415175 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Yuly Novikov <ynovikov@chromium.org>

Test Runner: Fix dirty thread teardown.
58463573 · Jamie Madill · Commit Bot · a2d670c5 · 58463573
Commit 58463573 authored Sep 16, 2020 by Jamie Madill Committed by Commit Bot Sep 17, 2020
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TestSuite.cpp src/tests/test_utils/runner/TestSuite.cpp +14 -1

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--- a/src/tests/test_utils/runner/TestSuite.cpp
+++ b/src/tests/test_utils/runner/TestSuite.cpp
@@ -1160,7 +1160,20 @@ int TestSuite::run()
    if (!mBotMode)
    {
        startWatchdog();
-        return RUN_ALL_TESTS();
+        int retVal = RUN_ALL_TESTS();
+        {
+            std::lock_guard<std::mutex> guard(mTestResults.currentTestMutex);
+            mTestResults.allDone = true;
+        }
+        for (int tries = 0; tries < 10; ++tries)
+        {
+            if (!mWatchdogThread.joinable())
+                break;
+            angle::Sleep(100);
+        }
+        return retVal;
    }
    Timer totalRunTime;