| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License. |
| |
| #include "kudu/util/async_util.h" |
| |
| #include <unistd.h> |
| |
| #include <functional> |
| #include <thread> |
| #include <vector> |
| |
| #include <gtest/gtest.h> |
| |
| #include "kudu/gutil/basictypes.h" |
| #include "kudu/gutil/callback.h" |
| #include "kudu/util/monotime.h" |
| #include "kudu/util/status.h" |
| #include "kudu/util/test_macros.h" |
| #include "kudu/util/test_util.h" |
| |
| using std::thread; |
| using std::vector; |
| |
| namespace kudu { |
| |
| class AsyncUtilTest : public KuduTest { |
| public: |
| AsyncUtilTest() { |
| // Set up an alarm to fail the test in case of deadlock. |
| alarm(30); |
| } |
| ~AsyncUtilTest() { |
| // Disable the alarm on test exit. |
| alarm(0); |
| } |
| }; |
| |
| // Test completing the synchronizer through each of the APIs it exposes. |
| TEST_F(AsyncUtilTest, TestSynchronizerCompletion) { |
| Synchronizer sync; |
| |
| { |
| auto waiter = thread([sync] { |
| ignore_result(sync.Wait()); |
| }); |
| SleepFor(MonoDelta::FromMilliseconds(5)); |
| sync.StatusCB(Status::OK()); |
| waiter.join(); |
| } |
| sync.Reset(); |
| { |
| auto cb = sync.AsStatusCallback(); |
| auto waiter = thread([sync] { |
| ignore_result(sync.Wait()); |
| }); |
| SleepFor(MonoDelta::FromMilliseconds(5)); |
| cb.Run(Status::OK()); |
| waiter.join(); |
| } |
| sync.Reset(); |
| { |
| auto cb = sync.AsStdStatusCallback(); |
| auto waiter = thread([sync] { |
| ignore_result(sync.Wait()); |
| }); |
| SleepFor(MonoDelta::FromMilliseconds(5)); |
| cb(Status::OK()); |
| waiter.join(); |
| } |
| } |
| |
| TEST_F(AsyncUtilTest, TestSynchronizerMultiWait) { |
| Synchronizer sync; |
| vector<thread> waiters; |
| for (int i = 0; i < 5; i++) { |
| waiters.emplace_back([sync] { |
| ignore_result(sync.Wait()); |
| }); |
| } |
| SleepFor(MonoDelta::FromMilliseconds(5)); |
| sync.StatusCB(Status::OK()); |
| |
| for (auto& waiter : waiters) { |
| waiter.join(); |
| } |
| } |
| |
| TEST_F(AsyncUtilTest, TestSynchronizerTimedWait) { |
| thread waiter; |
| { |
| Synchronizer sync; |
| auto cb = sync.AsStatusCallback(); |
| waiter = thread([cb] { |
| SleepFor(MonoDelta::FromMilliseconds(5)); |
| cb.Run(Status::OK()); |
| }); |
| ASSERT_OK(sync.WaitFor(MonoDelta::FromMilliseconds(1000))); |
| } |
| waiter.join(); |
| |
| { |
| Synchronizer sync; |
| auto cb = sync.AsStatusCallback(); |
| waiter = thread([cb] { |
| SleepFor(MonoDelta::FromMilliseconds(1000)); |
| cb.Run(Status::OK()); |
| }); |
| ASSERT_TRUE(sync.WaitFor(MonoDelta::FromMilliseconds(5)).IsTimedOut()); |
| } |
| |
| // Waiting on the thread gives TSAN to check that no thread safety issues |
| // occurred. |
| waiter.join(); |
| } |
| } // namespace kudu |