| /* |
| * 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. |
| */ |
| package org.apache.ambari.server.logging; |
| |
| import static org.easymock.EasyMock.expect; |
| |
| import java.util.Collections; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.locks.ReentrantLock; |
| import java.util.concurrent.locks.ReentrantReadWriteLock; |
| |
| import org.easymock.EasyMockSupport; |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| import com.google.common.base.Ticker; |
| |
| public class ProfiledReentrantReadWriteLockTest extends EasyMockSupport { |
| |
| private static final String LABEL = "label"; |
| |
| @Test |
| public void lockingReadLockOnlyLocksReadLock() { |
| ReentrantReadWriteLock delegate = new ReentrantReadWriteLock(); |
| ProfiledReentrantReadWriteLock testSubject = new ProfiledReentrantReadWriteLock(delegate, Ticker.systemTicker(), LABEL); |
| |
| testSubject.readLock().lock(); |
| |
| Assert.assertEquals(1, delegate.getReadHoldCount()); |
| Assert.assertEquals(0, delegate.getWriteHoldCount()); |
| } |
| |
| @Test |
| public void lockingWriteLockOnlyLocksWriteLock() { |
| ReentrantReadWriteLock delegate = new ReentrantReadWriteLock(); |
| ProfiledReentrantReadWriteLock testSubject = new ProfiledReentrantReadWriteLock(delegate, Ticker.systemTicker(), LABEL); |
| |
| testSubject.writeLock().lock(); |
| |
| Assert.assertEquals(0, delegate.getReadHoldCount()); |
| Assert.assertEquals(1, delegate.getWriteHoldCount()); |
| } |
| |
| @Test |
| public void timeWaitingForReadLockIsRecorded() { |
| Ticker ticker = createMock(Ticker.class); |
| ProfiledLock testSubject = new ProfiledReentrantReadWriteLock(new ReentrantReadWriteLock(), ticker, LABEL).readLock(); |
| timeWaitingForLockIsRecorded(testSubject, ticker); |
| } |
| |
| @Test |
| public void timeWaitingForWriteLockIsRecorded() { |
| Ticker ticker = createMock(Ticker.class); |
| ProfiledLock testSubject = new ProfiledReentrantReadWriteLock(new ReentrantReadWriteLock(), ticker, LABEL).writeLock(); |
| timeWaitingForLockIsRecorded(testSubject, ticker); |
| } |
| |
| private void timeWaitingForLockIsRecorded(ProfiledLock testSubject, Ticker ticker) { |
| expect(ticker.read()).andReturn(TimeUnit.MILLISECONDS.toNanos(1L)); |
| expect(ticker.read()).andReturn(TimeUnit.MILLISECONDS.toNanos(4L)); |
| expect(ticker.read()).andReturn(TimeUnit.MILLISECONDS.toNanos(5L)); |
| replayAll(); |
| |
| testSubject.lock(); |
| |
| Assert.assertEquals(Collections.singletonMap(Thread.currentThread().getName(), 4L - 1L), testSubject.getTimeSpentWaitingForLock()); |
| verifyAll(); |
| } |
| |
| @Test |
| public void timeReadLockSpentLockedIsRecorded() { |
| Ticker ticker = createMock(Ticker.class); |
| ProfiledLock testSubject = new ProfiledReentrantReadWriteLock(new ReentrantReadWriteLock(), ticker, LABEL).readLock(); |
| timeSpentLockedIsRecorded(ticker, testSubject); |
| } |
| |
| @Test |
| public void timeWriteLockSpentLockedIsRecorded() { |
| Ticker ticker = createMock(Ticker.class); |
| ProfiledLock testSubject = new ProfiledReentrantReadWriteLock(new ReentrantReadWriteLock(), ticker, LABEL).writeLock(); |
| timeSpentLockedIsRecorded(ticker, testSubject); |
| } |
| |
| @Test |
| public void timeLockSpentLockedIsRecorded() { |
| Ticker ticker = createMock(Ticker.class); |
| ProfiledLock testSubject = new ProfiledReentrantLock(new ReentrantLock(), ticker, LABEL); |
| timeSpentLockedIsRecorded(ticker, testSubject); |
| } |
| |
| private void timeSpentLockedIsRecorded(Ticker ticker, ProfiledLock testSubject) { |
| expect(ticker.read()).andReturn(TimeUnit.MILLISECONDS.toNanos(0L)); |
| expect(ticker.read()).andReturn(TimeUnit.MILLISECONDS.toNanos(0L)); |
| expect(ticker.read()).andReturn(TimeUnit.MILLISECONDS.toNanos(6L)); |
| expect(ticker.read()).andReturn(TimeUnit.MILLISECONDS.toNanos(13L)); |
| replayAll(); |
| |
| testSubject.lock(); |
| testSubject.unlock(); |
| |
| Assert.assertEquals(Collections.singletonMap(Thread.currentThread().getName(), 13L - 6L), testSubject.getTimeSpentLocked()); |
| verifyAll(); |
| } |
| |
| @Test |
| public void onlyOutermostLockUnlockIsProfiledForReadLock() { |
| Ticker ticker = createMock(Ticker.class); |
| ProfiledLock testSubject = new ProfiledReentrantReadWriteLock(new ReentrantReadWriteLock(), ticker, LABEL).readLock(); |
| onlyOutermostLockUnlockIsProfiled(testSubject, ticker); |
| } |
| |
| @Test |
| public void onlyOutermostLockUnlockIsProfiledForWriteLock() { |
| Ticker ticker = createMock(Ticker.class); |
| ProfiledLock testSubject = new ProfiledReentrantReadWriteLock(new ReentrantReadWriteLock(), ticker, LABEL).readLock(); |
| onlyOutermostLockUnlockIsProfiled(testSubject, ticker); |
| } |
| |
| @Test |
| public void onlyOutermostLockUnlockIsProfiled() { |
| Ticker ticker = createMock(Ticker.class); |
| ProfiledLock testSubject = new ProfiledReentrantLock(new ReentrantLock(), ticker, LABEL); |
| onlyOutermostLockUnlockIsProfiled(testSubject, ticker); |
| } |
| |
| private void onlyOutermostLockUnlockIsProfiled(ProfiledLock testSubject, Ticker ticker) { |
| expect(ticker.read()).andReturn(TimeUnit.MILLISECONDS.toNanos(0L)); |
| expect(ticker.read()).andReturn(TimeUnit.MILLISECONDS.toNanos(0L)); |
| expect(ticker.read()).andReturn(TimeUnit.MILLISECONDS.toNanos(5L)); |
| expect(ticker.read()).andReturn(TimeUnit.MILLISECONDS.toNanos(19L)); |
| replayAll(); |
| |
| testSubject.lock(); |
| testSubject.lock(); |
| testSubject.unlock(); |
| testSubject.unlock(); |
| |
| Assert.assertEquals(Collections.singletonMap(Thread.currentThread().getName(), 19L - 5L), testSubject.getTimeSpentLocked()); |
| Assert.assertEquals(Collections.singletonMap(Thread.currentThread().getName(), 1), testSubject.getLockCount()); |
| verifyAll(); |
| } |
| |
| } |