Merge "Deflake WorkerThreadTest" into sc-dev am: 47264c7a2c
Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/14926121
Change-Id: Ifdf8824560db1880d9e5b1d1385e884656d6af01
diff --git a/biometrics/fingerprint/aidl/default/tests/WorkerThreadTest.cpp b/biometrics/fingerprint/aidl/default/tests/WorkerThreadTest.cpp
index 8443336..b2417bd 100644
--- a/biometrics/fingerprint/aidl/default/tests/WorkerThreadTest.cpp
+++ b/biometrics/fingerprint/aidl/default/tests/WorkerThreadTest.cpp
@@ -73,24 +73,29 @@
constexpr int NUM_TASKS = 10000;
WorkerThread worker(NUM_TASKS);
+ std::mutex mut;
+ std::condition_variable cv;
+ bool finished = false;
std::vector<int> results;
+
for (int i = 0; i < NUM_TASKS; ++i) {
- worker.schedule(Callable::from([&results, i] {
+ worker.schedule(Callable::from([&mut, &results, i] {
// Delay tasks differently to provoke races.
std::this_thread::sleep_for(std::chrono::nanoseconds(100 - i % 100));
- // Unguarded write to results to provoke races.
+ auto lock = std::lock_guard(mut);
results.push_back(i);
}));
}
- std::promise<void> promise;
- auto future = promise.get_future();
-
// Schedule a special task to signal when all of the tasks are finished.
- worker.schedule(
- Callable::from([promise = std::move(promise)]() mutable { promise.set_value(); }));
- future.wait();
+ worker.schedule(Callable::from([&mut, &cv, &finished] {
+ auto lock = std::lock_guard(mut);
+ finished = true;
+ cv.notify_one();
+ }));
+ auto lock = std::unique_lock(mut);
+ cv.wait(lock, [&finished] { return finished; });
ASSERT_EQ(results.size(), NUM_TASKS);
EXPECT_TRUE(std::is_sorted(results.begin(), results.end()));
}