author | dl |
Sat, 14 Sep 2019 11:26:26 -0700 | |
changeset 58138 | 1e4270f875ee |
parent 50764 | 5637aca18f1d |
permissions | -rw-r--r-- |
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/* |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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/* |
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* This file is available under and governed by the GNU General Public |
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* License version 2 only, as published by the Free Software Foundation. |
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* However, the following notice accompanied the original version of this |
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* file: |
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* |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
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* Expert Group and released to the public domain, as explained at |
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* http://creativecommons.org/publicdomain/zero/1.0/ |
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* Other contributors include Andrew Wright, Jeffrey Hayes, |
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* Pat Fisher, Mike Judd. |
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*/ |
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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import static java.util.concurrent.TimeUnit.NANOSECONDS; |
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import java.util.Arrays; |
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import java.util.Collection; |
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import java.util.HashSet; |
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import java.util.concurrent.atomic.AtomicBoolean; |
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import java.util.concurrent.locks.AbstractQueuedLongSynchronizer; |
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import java.util.concurrent.locks.AbstractQueuedLongSynchronizer.ConditionObject; |
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import junit.framework.Test; |
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import junit.framework.TestSuite; |
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@SuppressWarnings("WaitNotInLoop") // we implement spurious-wakeup freedom |
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public class AbstractQueuedLongSynchronizerTest extends JSR166TestCase { |
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public static void main(String[] args) { |
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main(suite(), args); |
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} |
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public static Test suite() { |
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return new TestSuite(AbstractQueuedLongSynchronizerTest.class); |
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} |
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/** |
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* A simple mutex class, adapted from the class javadoc. Exclusive |
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* acquire tests exercise this as a sample user extension. |
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* |
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* Unlike the javadoc sample, we don't track owner thread via |
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* AbstractOwnableSynchronizer methods. |
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*/ |
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static class Mutex extends AbstractQueuedLongSynchronizer { |
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/** An eccentric value > 32 bits for locked synchronizer state. */ |
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static final long LOCKED = (1L << 63) | (1L << 15); |
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static final long UNLOCKED = 0; |
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/** Owner thread is untracked, so this is really just isLocked(). */ |
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@Override public boolean isHeldExclusively() { |
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long state = getState(); |
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assertTrue(state == UNLOCKED || state == LOCKED); |
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return state == LOCKED; |
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} |
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@Override protected boolean tryAcquire(long acquires) { |
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assertEquals(LOCKED, acquires); |
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return compareAndSetState(UNLOCKED, LOCKED); |
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} |
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@Override protected boolean tryRelease(long releases) { |
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if (getState() != LOCKED) throw new IllegalMonitorStateException(); |
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setState(UNLOCKED); |
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return true; |
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} |
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public boolean tryAcquireNanos(long nanos) throws InterruptedException { |
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return tryAcquireNanos(LOCKED, nanos); |
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} |
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public boolean tryAcquire() { |
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return tryAcquire(LOCKED); |
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} |
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public boolean tryRelease() { |
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return tryRelease(LOCKED); |
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} |
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public void acquire() { |
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acquire(LOCKED); |
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} |
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public void acquireInterruptibly() throws InterruptedException { |
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acquireInterruptibly(LOCKED); |
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} |
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public void release() { |
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release(LOCKED); |
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} |
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/** Faux-Implements Lock.newCondition(). */ |
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public ConditionObject newCondition() { |
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return new ConditionObject(); |
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} |
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} |
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/** |
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* A minimal latch class, to test shared mode. |
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*/ |
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static class BooleanLatch extends AbstractQueuedLongSynchronizer { |
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public boolean isSignalled() { return getState() != 0; } |
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public long tryAcquireShared(long ignore) { |
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return isSignalled() ? 1 : -1; |
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} |
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public boolean tryReleaseShared(long ignore) { |
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setState(1L << 62); |
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return true; |
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} |
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} |
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/** |
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* A runnable calling acquireInterruptibly that does not expect to |
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* be interrupted. |
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*/ |
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class InterruptibleSyncRunnable extends CheckedRunnable { |
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final Mutex sync; |
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InterruptibleSyncRunnable(Mutex sync) { this.sync = sync; } |
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public void realRun() throws InterruptedException { |
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sync.acquireInterruptibly(); |
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} |
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} |
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/** |
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* A runnable calling acquireInterruptibly that expects to be |
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* interrupted. |
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*/ |
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class InterruptedSyncRunnable extends CheckedInterruptedRunnable { |
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final Mutex sync; |
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InterruptedSyncRunnable(Mutex sync) { this.sync = sync; } |
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public void realRun() throws InterruptedException { |
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sync.acquireInterruptibly(); |
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} |
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} |
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/** A constant to clarify calls to checking methods below. */ |
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static final Thread[] NO_THREADS = new Thread[0]; |
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/** |
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* Spin-waits until sync.isQueued(t) becomes true. |
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*/ |
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void waitForQueuedThread(AbstractQueuedLongSynchronizer sync, |
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Thread t) { |
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long startTime = System.nanoTime(); |
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while (!sync.isQueued(t)) { |
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if (millisElapsedSince(startTime) > LONG_DELAY_MS) |
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throw new AssertionError("timed out"); |
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Thread.yield(); |
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} |
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assertTrue(t.isAlive()); |
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} |
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/** |
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* Checks that sync has exactly the given queued threads. |
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*/ |
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void assertHasQueuedThreads(AbstractQueuedLongSynchronizer sync, |
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Thread... expected) { |
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Collection<Thread> actual = sync.getQueuedThreads(); |
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assertEquals(expected.length > 0, sync.hasQueuedThreads()); |
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assertEquals(expected.length, sync.getQueueLength()); |
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assertEquals(expected.length, actual.size()); |
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assertEquals(expected.length == 0, actual.isEmpty()); |
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assertEquals(new HashSet<Thread>(actual), |
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new HashSet<Thread>(Arrays.asList(expected))); |
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} |
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/** |
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* Checks that sync has exactly the given (exclusive) queued threads. |
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*/ |
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void assertHasExclusiveQueuedThreads(AbstractQueuedLongSynchronizer sync, |
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Thread... expected) { |
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assertHasQueuedThreads(sync, expected); |
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assertEquals(new HashSet<Thread>(sync.getExclusiveQueuedThreads()), |
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new HashSet<Thread>(sync.getQueuedThreads())); |
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assertEquals(0, sync.getSharedQueuedThreads().size()); |
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assertTrue(sync.getSharedQueuedThreads().isEmpty()); |
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} |
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/** |
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* Checks that sync has exactly the given (shared) queued threads. |
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*/ |
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void assertHasSharedQueuedThreads(AbstractQueuedLongSynchronizer sync, |
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Thread... expected) { |
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assertHasQueuedThreads(sync, expected); |
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assertEquals(new HashSet<Thread>(sync.getSharedQueuedThreads()), |
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new HashSet<Thread>(sync.getQueuedThreads())); |
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assertEquals(0, sync.getExclusiveQueuedThreads().size()); |
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assertTrue(sync.getExclusiveQueuedThreads().isEmpty()); |
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} |
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/** |
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* Checks that condition c has exactly the given waiter threads, |
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* after acquiring mutex. |
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*/ |
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void assertHasWaitersUnlocked(Mutex sync, ConditionObject c, |
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Thread... threads) { |
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sync.acquire(); |
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assertHasWaitersLocked(sync, c, threads); |
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sync.release(); |
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} |
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/** |
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* Checks that condition c has exactly the given waiter threads. |
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*/ |
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void assertHasWaitersLocked(Mutex sync, ConditionObject c, |
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Thread... threads) { |
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assertEquals(threads.length > 0, sync.hasWaiters(c)); |
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assertEquals(threads.length, sync.getWaitQueueLength(c)); |
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assertEquals(threads.length == 0, sync.getWaitingThreads(c).isEmpty()); |
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assertEquals(threads.length, sync.getWaitingThreads(c).size()); |
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assertEquals(new HashSet<Thread>(sync.getWaitingThreads(c)), |
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new HashSet<Thread>(Arrays.asList(threads))); |
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} |
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enum AwaitMethod { await, awaitTimed, awaitNanos, awaitUntil } |
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/** |
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* Awaits condition using the specified AwaitMethod. |
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*/ |
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void await(ConditionObject c, AwaitMethod awaitMethod) |
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throws InterruptedException { |
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long timeoutMillis = 2 * LONG_DELAY_MS; |
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switch (awaitMethod) { |
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case await: |
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c.await(); |
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break; |
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case awaitTimed: |
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assertTrue(c.await(timeoutMillis, MILLISECONDS)); |
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break; |
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case awaitNanos: |
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long timeoutNanos = MILLISECONDS.toNanos(timeoutMillis); |
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long nanosRemaining = c.awaitNanos(timeoutNanos); |
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assertTrue(nanosRemaining > 0); |
257 |
break; |
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case awaitUntil: |
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assertTrue(c.awaitUntil(delayedDate(timeoutMillis))); |
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break; |
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default: |
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throw new AssertionError(); |
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263 |
} |
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} |
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265 |
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/** |
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267 |
* Checks that awaiting the given condition times out (using the |
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* default timeout duration). |
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*/ |
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void assertAwaitTimesOut(ConditionObject c, AwaitMethod awaitMethod) { |
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final long timeoutMillis = timeoutMillis(); |
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final long startTime; |
35394 | 273 |
try { |
274 |
switch (awaitMethod) { |
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275 |
case awaitTimed: |
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276 |
startTime = System.nanoTime(); |
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277 |
assertFalse(c.await(timeoutMillis, MILLISECONDS)); |
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278 |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis); |
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break; |
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280 |
case awaitNanos: |
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startTime = System.nanoTime(); |
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long timeoutNanos = MILLISECONDS.toNanos(timeoutMillis); |
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long nanosRemaining = c.awaitNanos(timeoutNanos); |
35394 | 284 |
assertTrue(nanosRemaining <= 0); |
285 |
assertTrue(nanosRemaining > -MILLISECONDS.toNanos(LONG_DELAY_MS)); |
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286 |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis); |
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287 |
break; |
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288 |
case awaitUntil: |
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289 |
// We shouldn't assume that nanoTime and currentTimeMillis |
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290 |
// use the same time source, so don't use nanoTime here. |
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java.util.Date delayedDate = delayedDate(timeoutMillis); |
35394 | 292 |
assertFalse(c.awaitUntil(delayedDate(timeoutMillis))); |
293 |
assertTrue(new java.util.Date().getTime() >= delayedDate.getTime()); |
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294 |
break; |
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295 |
default: |
|
296 |
throw new UnsupportedOperationException(); |
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297 |
} |
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298 |
} catch (InterruptedException ie) { threadUnexpectedException(ie); } |
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299 |
} |
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300 |
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301 |
/** |
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302 |
* isHeldExclusively is false upon construction |
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303 |
*/ |
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304 |
public void testIsHeldExclusively() { |
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305 |
Mutex sync = new Mutex(); |
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306 |
assertFalse(sync.isHeldExclusively()); |
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307 |
} |
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308 |
||
309 |
/** |
|
310 |
* acquiring released sync succeeds |
|
311 |
*/ |
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312 |
public void testAcquire() { |
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313 |
Mutex sync = new Mutex(); |
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314 |
sync.acquire(); |
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315 |
assertTrue(sync.isHeldExclusively()); |
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316 |
sync.release(); |
|
317 |
assertFalse(sync.isHeldExclusively()); |
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318 |
} |
|
319 |
||
320 |
/** |
|
321 |
* tryAcquire on a released sync succeeds |
|
322 |
*/ |
|
323 |
public void testTryAcquire() { |
|
324 |
Mutex sync = new Mutex(); |
|
325 |
assertTrue(sync.tryAcquire()); |
|
326 |
assertTrue(sync.isHeldExclusively()); |
|
327 |
sync.release(); |
|
328 |
assertFalse(sync.isHeldExclusively()); |
|
329 |
} |
|
330 |
||
331 |
/** |
|
332 |
* hasQueuedThreads reports whether there are waiting threads |
|
333 |
*/ |
|
334 |
public void testHasQueuedThreads() { |
|
335 |
final Mutex sync = new Mutex(); |
|
336 |
assertFalse(sync.hasQueuedThreads()); |
|
337 |
sync.acquire(); |
|
338 |
Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync)); |
|
339 |
waitForQueuedThread(sync, t1); |
|
340 |
assertTrue(sync.hasQueuedThreads()); |
|
341 |
Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync)); |
|
342 |
waitForQueuedThread(sync, t2); |
|
343 |
assertTrue(sync.hasQueuedThreads()); |
|
344 |
t1.interrupt(); |
|
345 |
awaitTermination(t1); |
|
346 |
assertTrue(sync.hasQueuedThreads()); |
|
347 |
sync.release(); |
|
348 |
awaitTermination(t2); |
|
349 |
assertFalse(sync.hasQueuedThreads()); |
|
350 |
} |
|
351 |
||
352 |
/** |
|
353 |
* isQueued(null) throws NullPointerException |
|
354 |
*/ |
|
355 |
public void testIsQueuedNPE() { |
|
356 |
final Mutex sync = new Mutex(); |
|
357 |
try { |
|
358 |
sync.isQueued(null); |
|
359 |
shouldThrow(); |
|
360 |
} catch (NullPointerException success) {} |
|
361 |
} |
|
362 |
||
363 |
/** |
|
364 |
* isQueued reports whether a thread is queued |
|
365 |
*/ |
|
366 |
public void testIsQueued() { |
|
367 |
final Mutex sync = new Mutex(); |
|
368 |
Thread t1 = new Thread(new InterruptedSyncRunnable(sync)); |
|
369 |
Thread t2 = new Thread(new InterruptibleSyncRunnable(sync)); |
|
370 |
assertFalse(sync.isQueued(t1)); |
|
371 |
assertFalse(sync.isQueued(t2)); |
|
372 |
sync.acquire(); |
|
373 |
t1.start(); |
|
374 |
waitForQueuedThread(sync, t1); |
|
375 |
assertTrue(sync.isQueued(t1)); |
|
376 |
assertFalse(sync.isQueued(t2)); |
|
377 |
t2.start(); |
|
378 |
waitForQueuedThread(sync, t2); |
|
379 |
assertTrue(sync.isQueued(t1)); |
|
380 |
assertTrue(sync.isQueued(t2)); |
|
381 |
t1.interrupt(); |
|
382 |
awaitTermination(t1); |
|
383 |
assertFalse(sync.isQueued(t1)); |
|
384 |
assertTrue(sync.isQueued(t2)); |
|
385 |
sync.release(); |
|
386 |
awaitTermination(t2); |
|
387 |
assertFalse(sync.isQueued(t1)); |
|
388 |
assertFalse(sync.isQueued(t2)); |
|
389 |
} |
|
390 |
||
391 |
/** |
|
392 |
* getFirstQueuedThread returns first waiting thread or null if none |
|
393 |
*/ |
|
394 |
public void testGetFirstQueuedThread() { |
|
395 |
final Mutex sync = new Mutex(); |
|
396 |
assertNull(sync.getFirstQueuedThread()); |
|
397 |
sync.acquire(); |
|
398 |
Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync)); |
|
399 |
waitForQueuedThread(sync, t1); |
|
400 |
assertEquals(t1, sync.getFirstQueuedThread()); |
|
401 |
Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync)); |
|
402 |
waitForQueuedThread(sync, t2); |
|
403 |
assertEquals(t1, sync.getFirstQueuedThread()); |
|
404 |
t1.interrupt(); |
|
405 |
awaitTermination(t1); |
|
406 |
assertEquals(t2, sync.getFirstQueuedThread()); |
|
407 |
sync.release(); |
|
408 |
awaitTermination(t2); |
|
409 |
assertNull(sync.getFirstQueuedThread()); |
|
410 |
} |
|
411 |
||
412 |
/** |
|
413 |
* hasContended reports false if no thread has ever blocked, else true |
|
414 |
*/ |
|
415 |
public void testHasContended() { |
|
416 |
final Mutex sync = new Mutex(); |
|
417 |
assertFalse(sync.hasContended()); |
|
418 |
sync.acquire(); |
|
419 |
assertFalse(sync.hasContended()); |
|
420 |
Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync)); |
|
421 |
waitForQueuedThread(sync, t1); |
|
422 |
assertTrue(sync.hasContended()); |
|
423 |
Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync)); |
|
424 |
waitForQueuedThread(sync, t2); |
|
425 |
assertTrue(sync.hasContended()); |
|
426 |
t1.interrupt(); |
|
427 |
awaitTermination(t1); |
|
428 |
assertTrue(sync.hasContended()); |
|
429 |
sync.release(); |
|
430 |
awaitTermination(t2); |
|
431 |
assertTrue(sync.hasContended()); |
|
432 |
} |
|
433 |
||
434 |
/** |
|
435 |
* getQueuedThreads returns all waiting threads |
|
436 |
*/ |
|
437 |
public void testGetQueuedThreads() { |
|
438 |
final Mutex sync = new Mutex(); |
|
439 |
Thread t1 = new Thread(new InterruptedSyncRunnable(sync)); |
|
440 |
Thread t2 = new Thread(new InterruptibleSyncRunnable(sync)); |
|
441 |
assertHasExclusiveQueuedThreads(sync, NO_THREADS); |
|
442 |
sync.acquire(); |
|
443 |
assertHasExclusiveQueuedThreads(sync, NO_THREADS); |
|
444 |
t1.start(); |
|
445 |
waitForQueuedThread(sync, t1); |
|
446 |
assertHasExclusiveQueuedThreads(sync, t1); |
|
447 |
assertTrue(sync.getQueuedThreads().contains(t1)); |
|
448 |
assertFalse(sync.getQueuedThreads().contains(t2)); |
|
449 |
t2.start(); |
|
450 |
waitForQueuedThread(sync, t2); |
|
451 |
assertHasExclusiveQueuedThreads(sync, t1, t2); |
|
452 |
assertTrue(sync.getQueuedThreads().contains(t1)); |
|
453 |
assertTrue(sync.getQueuedThreads().contains(t2)); |
|
454 |
t1.interrupt(); |
|
455 |
awaitTermination(t1); |
|
456 |
assertHasExclusiveQueuedThreads(sync, t2); |
|
457 |
sync.release(); |
|
458 |
awaitTermination(t2); |
|
459 |
assertHasExclusiveQueuedThreads(sync, NO_THREADS); |
|
460 |
} |
|
461 |
||
462 |
/** |
|
463 |
* getExclusiveQueuedThreads returns all exclusive waiting threads |
|
464 |
*/ |
|
465 |
public void testGetExclusiveQueuedThreads() { |
|
466 |
final Mutex sync = new Mutex(); |
|
467 |
Thread t1 = new Thread(new InterruptedSyncRunnable(sync)); |
|
468 |
Thread t2 = new Thread(new InterruptibleSyncRunnable(sync)); |
|
469 |
assertHasExclusiveQueuedThreads(sync, NO_THREADS); |
|
470 |
sync.acquire(); |
|
471 |
assertHasExclusiveQueuedThreads(sync, NO_THREADS); |
|
472 |
t1.start(); |
|
473 |
waitForQueuedThread(sync, t1); |
|
474 |
assertHasExclusiveQueuedThreads(sync, t1); |
|
475 |
assertTrue(sync.getExclusiveQueuedThreads().contains(t1)); |
|
476 |
assertFalse(sync.getExclusiveQueuedThreads().contains(t2)); |
|
477 |
t2.start(); |
|
478 |
waitForQueuedThread(sync, t2); |
|
479 |
assertHasExclusiveQueuedThreads(sync, t1, t2); |
|
480 |
assertTrue(sync.getExclusiveQueuedThreads().contains(t1)); |
|
481 |
assertTrue(sync.getExclusiveQueuedThreads().contains(t2)); |
|
482 |
t1.interrupt(); |
|
483 |
awaitTermination(t1); |
|
484 |
assertHasExclusiveQueuedThreads(sync, t2); |
|
485 |
sync.release(); |
|
486 |
awaitTermination(t2); |
|
487 |
assertHasExclusiveQueuedThreads(sync, NO_THREADS); |
|
488 |
} |
|
489 |
||
490 |
/** |
|
491 |
* getSharedQueuedThreads does not include exclusively waiting threads |
|
492 |
*/ |
|
493 |
public void testGetSharedQueuedThreads_Exclusive() { |
|
494 |
final Mutex sync = new Mutex(); |
|
495 |
assertTrue(sync.getSharedQueuedThreads().isEmpty()); |
|
496 |
sync.acquire(); |
|
497 |
assertTrue(sync.getSharedQueuedThreads().isEmpty()); |
|
498 |
Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync)); |
|
499 |
waitForQueuedThread(sync, t1); |
|
500 |
assertTrue(sync.getSharedQueuedThreads().isEmpty()); |
|
501 |
Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync)); |
|
502 |
waitForQueuedThread(sync, t2); |
|
503 |
assertTrue(sync.getSharedQueuedThreads().isEmpty()); |
|
504 |
t1.interrupt(); |
|
505 |
awaitTermination(t1); |
|
506 |
assertTrue(sync.getSharedQueuedThreads().isEmpty()); |
|
507 |
sync.release(); |
|
508 |
awaitTermination(t2); |
|
509 |
assertTrue(sync.getSharedQueuedThreads().isEmpty()); |
|
510 |
} |
|
511 |
||
512 |
/** |
|
513 |
* getSharedQueuedThreads returns all shared waiting threads |
|
514 |
*/ |
|
515 |
public void testGetSharedQueuedThreads_Shared() { |
|
516 |
final BooleanLatch l = new BooleanLatch(); |
|
517 |
assertHasSharedQueuedThreads(l, NO_THREADS); |
|
518 |
Thread t1 = newStartedThread(new CheckedInterruptedRunnable() { |
|
519 |
public void realRun() throws InterruptedException { |
|
520 |
l.acquireSharedInterruptibly(0); |
|
521 |
}}); |
|
522 |
waitForQueuedThread(l, t1); |
|
523 |
assertHasSharedQueuedThreads(l, t1); |
|
524 |
Thread t2 = newStartedThread(new CheckedRunnable() { |
|
525 |
public void realRun() throws InterruptedException { |
|
526 |
l.acquireSharedInterruptibly(0); |
|
527 |
}}); |
|
528 |
waitForQueuedThread(l, t2); |
|
529 |
assertHasSharedQueuedThreads(l, t1, t2); |
|
530 |
t1.interrupt(); |
|
531 |
awaitTermination(t1); |
|
532 |
assertHasSharedQueuedThreads(l, t2); |
|
533 |
assertTrue(l.releaseShared(0)); |
|
534 |
awaitTermination(t2); |
|
535 |
assertHasSharedQueuedThreads(l, NO_THREADS); |
|
536 |
} |
|
537 |
||
538 |
/** |
|
539 |
* tryAcquireNanos is interruptible |
|
540 |
*/ |
|
541 |
public void testTryAcquireNanos_Interruptible() { |
|
542 |
final Mutex sync = new Mutex(); |
|
543 |
sync.acquire(); |
|
544 |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
|
545 |
public void realRun() throws InterruptedException { |
|
546 |
sync.tryAcquireNanos(MILLISECONDS.toNanos(2 * LONG_DELAY_MS)); |
|
547 |
}}); |
|
548 |
||
549 |
waitForQueuedThread(sync, t); |
|
550 |
t.interrupt(); |
|
551 |
awaitTermination(t); |
|
552 |
} |
|
553 |
||
554 |
/** |
|
555 |
* tryAcquire on exclusively held sync fails |
|
556 |
*/ |
|
557 |
public void testTryAcquireWhenSynced() { |
|
558 |
final Mutex sync = new Mutex(); |
|
559 |
sync.acquire(); |
|
560 |
Thread t = newStartedThread(new CheckedRunnable() { |
|
561 |
public void realRun() { |
|
562 |
assertFalse(sync.tryAcquire()); |
|
563 |
}}); |
|
564 |
||
565 |
awaitTermination(t); |
|
566 |
sync.release(); |
|
567 |
} |
|
568 |
||
569 |
/** |
|
570 |
* tryAcquireNanos on an exclusively held sync times out |
|
571 |
*/ |
|
572 |
public void testAcquireNanos_Timeout() { |
|
573 |
final Mutex sync = new Mutex(); |
|
574 |
sync.acquire(); |
|
575 |
Thread t = newStartedThread(new CheckedRunnable() { |
|
576 |
public void realRun() throws InterruptedException { |
|
577 |
long startTime = System.nanoTime(); |
|
578 |
long nanos = MILLISECONDS.toNanos(timeoutMillis()); |
|
579 |
assertFalse(sync.tryAcquireNanos(nanos)); |
|
580 |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
|
581 |
}}); |
|
582 |
||
583 |
awaitTermination(t); |
|
584 |
sync.release(); |
|
585 |
} |
|
586 |
||
587 |
/** |
|
588 |
* getState is true when acquired and false when not |
|
589 |
*/ |
|
590 |
public void testGetState() { |
|
591 |
final Mutex sync = new Mutex(); |
|
592 |
sync.acquire(); |
|
593 |
assertTrue(sync.isHeldExclusively()); |
|
594 |
sync.release(); |
|
595 |
assertFalse(sync.isHeldExclusively()); |
|
596 |
||
597 |
final BooleanLatch acquired = new BooleanLatch(); |
|
598 |
final BooleanLatch done = new BooleanLatch(); |
|
599 |
Thread t = newStartedThread(new CheckedRunnable() { |
|
600 |
public void realRun() throws InterruptedException { |
|
601 |
sync.acquire(); |
|
602 |
assertTrue(acquired.releaseShared(0)); |
|
603 |
done.acquireShared(0); |
|
604 |
sync.release(); |
|
605 |
}}); |
|
606 |
||
607 |
acquired.acquireShared(0); |
|
608 |
assertTrue(sync.isHeldExclusively()); |
|
609 |
assertTrue(done.releaseShared(0)); |
|
610 |
awaitTermination(t); |
|
611 |
assertFalse(sync.isHeldExclusively()); |
|
612 |
} |
|
613 |
||
614 |
/** |
|
615 |
* acquireInterruptibly succeeds when released, else is interruptible |
|
616 |
*/ |
|
617 |
public void testAcquireInterruptibly() throws InterruptedException { |
|
618 |
final Mutex sync = new Mutex(); |
|
619 |
final BooleanLatch threadStarted = new BooleanLatch(); |
|
620 |
sync.acquireInterruptibly(); |
|
621 |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
|
622 |
public void realRun() throws InterruptedException { |
|
623 |
assertTrue(threadStarted.releaseShared(0)); |
|
624 |
sync.acquireInterruptibly(); |
|
625 |
}}); |
|
626 |
||
627 |
threadStarted.acquireShared(0); |
|
628 |
waitForQueuedThread(sync, t); |
|
629 |
t.interrupt(); |
|
630 |
awaitTermination(t); |
|
631 |
assertTrue(sync.isHeldExclusively()); |
|
632 |
} |
|
633 |
||
634 |
/** |
|
635 |
* owns is true for a condition created by sync else false |
|
636 |
*/ |
|
637 |
public void testOwns() { |
|
638 |
final Mutex sync = new Mutex(); |
|
639 |
final ConditionObject c = sync.newCondition(); |
|
640 |
final Mutex sync2 = new Mutex(); |
|
641 |
assertTrue(sync.owns(c)); |
|
642 |
assertFalse(sync2.owns(c)); |
|
643 |
} |
|
644 |
||
645 |
/** |
|
646 |
* Calling await without holding sync throws IllegalMonitorStateException |
|
647 |
*/ |
|
648 |
public void testAwait_IMSE() { |
|
649 |
final Mutex sync = new Mutex(); |
|
650 |
final ConditionObject c = sync.newCondition(); |
|
651 |
for (AwaitMethod awaitMethod : AwaitMethod.values()) { |
|
652 |
long startTime = System.nanoTime(); |
|
653 |
try { |
|
654 |
await(c, awaitMethod); |
|
655 |
shouldThrow(); |
|
656 |
} catch (IllegalMonitorStateException success) { |
|
657 |
} catch (InterruptedException e) { threadUnexpectedException(e); } |
|
658 |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
|
659 |
} |
|
660 |
} |
|
661 |
||
662 |
/** |
|
663 |
* Calling signal without holding sync throws IllegalMonitorStateException |
|
664 |
*/ |
|
665 |
public void testSignal_IMSE() { |
|
666 |
final Mutex sync = new Mutex(); |
|
667 |
final ConditionObject c = sync.newCondition(); |
|
668 |
try { |
|
669 |
c.signal(); |
|
670 |
shouldThrow(); |
|
671 |
} catch (IllegalMonitorStateException success) {} |
|
672 |
assertHasWaitersUnlocked(sync, c, NO_THREADS); |
|
673 |
} |
|
674 |
||
675 |
/** |
|
676 |
* Calling signalAll without holding sync throws IllegalMonitorStateException |
|
677 |
*/ |
|
678 |
public void testSignalAll_IMSE() { |
|
679 |
final Mutex sync = new Mutex(); |
|
680 |
final ConditionObject c = sync.newCondition(); |
|
681 |
try { |
|
682 |
c.signalAll(); |
|
683 |
shouldThrow(); |
|
684 |
} catch (IllegalMonitorStateException success) {} |
|
685 |
} |
|
686 |
||
687 |
/** |
|
688 |
* await/awaitNanos/awaitUntil without a signal times out |
|
689 |
*/ |
|
690 |
public void testAwaitTimed_Timeout() { testAwait_Timeout(AwaitMethod.awaitTimed); } |
|
691 |
public void testAwaitNanos_Timeout() { testAwait_Timeout(AwaitMethod.awaitNanos); } |
|
692 |
public void testAwaitUntil_Timeout() { testAwait_Timeout(AwaitMethod.awaitUntil); } |
|
693 |
public void testAwait_Timeout(AwaitMethod awaitMethod) { |
|
694 |
final Mutex sync = new Mutex(); |
|
695 |
final ConditionObject c = sync.newCondition(); |
|
696 |
sync.acquire(); |
|
697 |
assertAwaitTimesOut(c, awaitMethod); |
|
698 |
sync.release(); |
|
699 |
} |
|
700 |
||
701 |
/** |
|
702 |
* await/awaitNanos/awaitUntil returns when signalled |
|
703 |
*/ |
|
704 |
public void testSignal_await() { testSignal(AwaitMethod.await); } |
|
705 |
public void testSignal_awaitTimed() { testSignal(AwaitMethod.awaitTimed); } |
|
706 |
public void testSignal_awaitNanos() { testSignal(AwaitMethod.awaitNanos); } |
|
707 |
public void testSignal_awaitUntil() { testSignal(AwaitMethod.awaitUntil); } |
|
708 |
public void testSignal(final AwaitMethod awaitMethod) { |
|
709 |
final Mutex sync = new Mutex(); |
|
710 |
final ConditionObject c = sync.newCondition(); |
|
711 |
final BooleanLatch acquired = new BooleanLatch(); |
|
712 |
Thread t = newStartedThread(new CheckedRunnable() { |
|
713 |
public void realRun() throws InterruptedException { |
|
714 |
sync.acquire(); |
|
715 |
assertTrue(acquired.releaseShared(0)); |
|
716 |
await(c, awaitMethod); |
|
717 |
sync.release(); |
|
718 |
}}); |
|
719 |
||
720 |
acquired.acquireShared(0); |
|
721 |
sync.acquire(); |
|
722 |
assertHasWaitersLocked(sync, c, t); |
|
723 |
assertHasExclusiveQueuedThreads(sync, NO_THREADS); |
|
724 |
c.signal(); |
|
725 |
assertHasWaitersLocked(sync, c, NO_THREADS); |
|
726 |
assertHasExclusiveQueuedThreads(sync, t); |
|
727 |
sync.release(); |
|
728 |
awaitTermination(t); |
|
729 |
} |
|
730 |
||
731 |
/** |
|
732 |
* hasWaiters(null) throws NullPointerException |
|
733 |
*/ |
|
734 |
public void testHasWaitersNPE() { |
|
735 |
final Mutex sync = new Mutex(); |
|
736 |
try { |
|
737 |
sync.hasWaiters(null); |
|
738 |
shouldThrow(); |
|
739 |
} catch (NullPointerException success) {} |
|
740 |
} |
|
741 |
||
742 |
/** |
|
743 |
* getWaitQueueLength(null) throws NullPointerException |
|
744 |
*/ |
|
745 |
public void testGetWaitQueueLengthNPE() { |
|
746 |
final Mutex sync = new Mutex(); |
|
747 |
try { |
|
748 |
sync.getWaitQueueLength(null); |
|
749 |
shouldThrow(); |
|
750 |
} catch (NullPointerException success) {} |
|
751 |
} |
|
752 |
||
753 |
/** |
|
754 |
* getWaitingThreads throws NPE if null |
|
755 |
*/ |
|
756 |
public void testGetWaitingThreadsNPE() { |
|
757 |
final Mutex sync = new Mutex(); |
|
758 |
try { |
|
759 |
sync.getWaitingThreads(null); |
|
760 |
shouldThrow(); |
|
761 |
} catch (NullPointerException success) {} |
|
762 |
} |
|
763 |
||
764 |
/** |
|
765 |
* hasWaiters throws IllegalArgumentException if not owned |
|
766 |
*/ |
|
767 |
public void testHasWaitersIAE() { |
|
768 |
final Mutex sync = new Mutex(); |
|
769 |
final ConditionObject c = sync.newCondition(); |
|
770 |
final Mutex sync2 = new Mutex(); |
|
771 |
try { |
|
772 |
sync2.hasWaiters(c); |
|
773 |
shouldThrow(); |
|
774 |
} catch (IllegalArgumentException success) {} |
|
775 |
assertHasWaitersUnlocked(sync, c, NO_THREADS); |
|
776 |
} |
|
777 |
||
778 |
/** |
|
779 |
* hasWaiters throws IllegalMonitorStateException if not synced |
|
780 |
*/ |
|
781 |
public void testHasWaitersIMSE() { |
|
782 |
final Mutex sync = new Mutex(); |
|
783 |
final ConditionObject c = sync.newCondition(); |
|
784 |
try { |
|
785 |
sync.hasWaiters(c); |
|
786 |
shouldThrow(); |
|
787 |
} catch (IllegalMonitorStateException success) {} |
|
788 |
assertHasWaitersUnlocked(sync, c, NO_THREADS); |
|
789 |
} |
|
790 |
||
791 |
/** |
|
792 |
* getWaitQueueLength throws IllegalArgumentException if not owned |
|
793 |
*/ |
|
794 |
public void testGetWaitQueueLengthIAE() { |
|
795 |
final Mutex sync = new Mutex(); |
|
796 |
final ConditionObject c = sync.newCondition(); |
|
797 |
final Mutex sync2 = new Mutex(); |
|
798 |
try { |
|
799 |
sync2.getWaitQueueLength(c); |
|
800 |
shouldThrow(); |
|
801 |
} catch (IllegalArgumentException success) {} |
|
802 |
assertHasWaitersUnlocked(sync, c, NO_THREADS); |
|
803 |
} |
|
804 |
||
805 |
/** |
|
806 |
* getWaitQueueLength throws IllegalMonitorStateException if not synced |
|
807 |
*/ |
|
808 |
public void testGetWaitQueueLengthIMSE() { |
|
809 |
final Mutex sync = new Mutex(); |
|
810 |
final ConditionObject c = sync.newCondition(); |
|
811 |
try { |
|
812 |
sync.getWaitQueueLength(c); |
|
813 |
shouldThrow(); |
|
814 |
} catch (IllegalMonitorStateException success) {} |
|
815 |
assertHasWaitersUnlocked(sync, c, NO_THREADS); |
|
816 |
} |
|
817 |
||
818 |
/** |
|
819 |
* getWaitingThreads throws IllegalArgumentException if not owned |
|
820 |
*/ |
|
821 |
public void testGetWaitingThreadsIAE() { |
|
822 |
final Mutex sync = new Mutex(); |
|
823 |
final ConditionObject c = sync.newCondition(); |
|
824 |
final Mutex sync2 = new Mutex(); |
|
825 |
try { |
|
826 |
sync2.getWaitingThreads(c); |
|
827 |
shouldThrow(); |
|
828 |
} catch (IllegalArgumentException success) {} |
|
829 |
assertHasWaitersUnlocked(sync, c, NO_THREADS); |
|
830 |
} |
|
831 |
||
832 |
/** |
|
833 |
* getWaitingThreads throws IllegalMonitorStateException if not synced |
|
834 |
*/ |
|
835 |
public void testGetWaitingThreadsIMSE() { |
|
836 |
final Mutex sync = new Mutex(); |
|
837 |
final ConditionObject c = sync.newCondition(); |
|
838 |
try { |
|
839 |
sync.getWaitingThreads(c); |
|
840 |
shouldThrow(); |
|
841 |
} catch (IllegalMonitorStateException success) {} |
|
842 |
assertHasWaitersUnlocked(sync, c, NO_THREADS); |
|
843 |
} |
|
844 |
||
845 |
/** |
|
846 |
* hasWaiters returns true when a thread is waiting, else false |
|
847 |
*/ |
|
848 |
public void testHasWaiters() { |
|
849 |
final Mutex sync = new Mutex(); |
|
850 |
final ConditionObject c = sync.newCondition(); |
|
851 |
final BooleanLatch acquired = new BooleanLatch(); |
|
852 |
Thread t = newStartedThread(new CheckedRunnable() { |
|
853 |
public void realRun() throws InterruptedException { |
|
854 |
sync.acquire(); |
|
855 |
assertHasWaitersLocked(sync, c, NO_THREADS); |
|
856 |
assertFalse(sync.hasWaiters(c)); |
|
857 |
assertTrue(acquired.releaseShared(0)); |
|
858 |
c.await(); |
|
859 |
sync.release(); |
|
860 |
}}); |
|
861 |
||
862 |
acquired.acquireShared(0); |
|
863 |
sync.acquire(); |
|
864 |
assertHasWaitersLocked(sync, c, t); |
|
865 |
assertHasExclusiveQueuedThreads(sync, NO_THREADS); |
|
866 |
assertTrue(sync.hasWaiters(c)); |
|
867 |
c.signal(); |
|
868 |
assertHasWaitersLocked(sync, c, NO_THREADS); |
|
869 |
assertHasExclusiveQueuedThreads(sync, t); |
|
870 |
assertFalse(sync.hasWaiters(c)); |
|
871 |
sync.release(); |
|
872 |
||
873 |
awaitTermination(t); |
|
874 |
assertHasWaitersUnlocked(sync, c, NO_THREADS); |
|
875 |
} |
|
876 |
||
877 |
/** |
|
878 |
* getWaitQueueLength returns number of waiting threads |
|
879 |
*/ |
|
880 |
public void testGetWaitQueueLength() { |
|
881 |
final Mutex sync = new Mutex(); |
|
882 |
final ConditionObject c = sync.newCondition(); |
|
883 |
final BooleanLatch acquired1 = new BooleanLatch(); |
|
884 |
final BooleanLatch acquired2 = new BooleanLatch(); |
|
885 |
final Thread t1 = newStartedThread(new CheckedRunnable() { |
|
886 |
public void realRun() throws InterruptedException { |
|
887 |
sync.acquire(); |
|
888 |
assertHasWaitersLocked(sync, c, NO_THREADS); |
|
889 |
assertEquals(0, sync.getWaitQueueLength(c)); |
|
890 |
assertTrue(acquired1.releaseShared(0)); |
|
891 |
c.await(); |
|
892 |
sync.release(); |
|
893 |
}}); |
|
894 |
acquired1.acquireShared(0); |
|
895 |
sync.acquire(); |
|
896 |
assertHasWaitersLocked(sync, c, t1); |
|
897 |
assertEquals(1, sync.getWaitQueueLength(c)); |
|
898 |
sync.release(); |
|
899 |
||
900 |
final Thread t2 = newStartedThread(new CheckedRunnable() { |
|
901 |
public void realRun() throws InterruptedException { |
|
902 |
sync.acquire(); |
|
903 |
assertHasWaitersLocked(sync, c, t1); |
|
904 |
assertEquals(1, sync.getWaitQueueLength(c)); |
|
905 |
assertTrue(acquired2.releaseShared(0)); |
|
906 |
c.await(); |
|
907 |
sync.release(); |
|
908 |
}}); |
|
909 |
acquired2.acquireShared(0); |
|
910 |
sync.acquire(); |
|
911 |
assertHasWaitersLocked(sync, c, t1, t2); |
|
912 |
assertHasExclusiveQueuedThreads(sync, NO_THREADS); |
|
913 |
assertEquals(2, sync.getWaitQueueLength(c)); |
|
914 |
c.signalAll(); |
|
915 |
assertHasWaitersLocked(sync, c, NO_THREADS); |
|
916 |
assertHasExclusiveQueuedThreads(sync, t1, t2); |
|
917 |
assertEquals(0, sync.getWaitQueueLength(c)); |
|
918 |
sync.release(); |
|
919 |
||
920 |
awaitTermination(t1); |
|
921 |
awaitTermination(t2); |
|
922 |
assertHasWaitersUnlocked(sync, c, NO_THREADS); |
|
923 |
} |
|
924 |
||
925 |
/** |
|
926 |
* getWaitingThreads returns only and all waiting threads |
|
927 |
*/ |
|
928 |
public void testGetWaitingThreads() { |
|
929 |
final Mutex sync = new Mutex(); |
|
930 |
final ConditionObject c = sync.newCondition(); |
|
931 |
final BooleanLatch acquired1 = new BooleanLatch(); |
|
932 |
final BooleanLatch acquired2 = new BooleanLatch(); |
|
933 |
final Thread t1 = new Thread(new CheckedRunnable() { |
|
934 |
public void realRun() throws InterruptedException { |
|
935 |
sync.acquire(); |
|
936 |
assertHasWaitersLocked(sync, c, NO_THREADS); |
|
937 |
assertTrue(sync.getWaitingThreads(c).isEmpty()); |
|
938 |
assertTrue(acquired1.releaseShared(0)); |
|
939 |
c.await(); |
|
940 |
sync.release(); |
|
941 |
}}); |
|
942 |
||
943 |
final Thread t2 = new Thread(new CheckedRunnable() { |
|
944 |
public void realRun() throws InterruptedException { |
|
945 |
sync.acquire(); |
|
946 |
assertHasWaitersLocked(sync, c, t1); |
|
947 |
assertTrue(sync.getWaitingThreads(c).contains(t1)); |
|
948 |
assertFalse(sync.getWaitingThreads(c).isEmpty()); |
|
949 |
assertEquals(1, sync.getWaitingThreads(c).size()); |
|
950 |
assertTrue(acquired2.releaseShared(0)); |
|
951 |
c.await(); |
|
952 |
sync.release(); |
|
953 |
}}); |
|
954 |
||
955 |
sync.acquire(); |
|
956 |
assertHasWaitersLocked(sync, c, NO_THREADS); |
|
957 |
assertFalse(sync.getWaitingThreads(c).contains(t1)); |
|
958 |
assertFalse(sync.getWaitingThreads(c).contains(t2)); |
|
959 |
assertTrue(sync.getWaitingThreads(c).isEmpty()); |
|
960 |
assertEquals(0, sync.getWaitingThreads(c).size()); |
|
961 |
sync.release(); |
|
962 |
||
963 |
t1.start(); |
|
964 |
acquired1.acquireShared(0); |
|
965 |
sync.acquire(); |
|
966 |
assertHasWaitersLocked(sync, c, t1); |
|
967 |
assertTrue(sync.getWaitingThreads(c).contains(t1)); |
|
968 |
assertFalse(sync.getWaitingThreads(c).contains(t2)); |
|
969 |
assertFalse(sync.getWaitingThreads(c).isEmpty()); |
|
970 |
assertEquals(1, sync.getWaitingThreads(c).size()); |
|
971 |
sync.release(); |
|
972 |
||
973 |
t2.start(); |
|
974 |
acquired2.acquireShared(0); |
|
975 |
sync.acquire(); |
|
976 |
assertHasWaitersLocked(sync, c, t1, t2); |
|
977 |
assertHasExclusiveQueuedThreads(sync, NO_THREADS); |
|
978 |
assertTrue(sync.getWaitingThreads(c).contains(t1)); |
|
979 |
assertTrue(sync.getWaitingThreads(c).contains(t2)); |
|
980 |
assertFalse(sync.getWaitingThreads(c).isEmpty()); |
|
981 |
assertEquals(2, sync.getWaitingThreads(c).size()); |
|
982 |
c.signalAll(); |
|
983 |
assertHasWaitersLocked(sync, c, NO_THREADS); |
|
984 |
assertHasExclusiveQueuedThreads(sync, t1, t2); |
|
985 |
assertFalse(sync.getWaitingThreads(c).contains(t1)); |
|
986 |
assertFalse(sync.getWaitingThreads(c).contains(t2)); |
|
987 |
assertTrue(sync.getWaitingThreads(c).isEmpty()); |
|
988 |
assertEquals(0, sync.getWaitingThreads(c).size()); |
|
989 |
sync.release(); |
|
990 |
||
991 |
awaitTermination(t1); |
|
992 |
awaitTermination(t2); |
|
993 |
assertHasWaitersUnlocked(sync, c, NO_THREADS); |
|
994 |
} |
|
995 |
||
996 |
/** |
|
997 |
* awaitUninterruptibly is uninterruptible |
|
998 |
*/ |
|
999 |
public void testAwaitUninterruptibly() { |
|
1000 |
final Mutex sync = new Mutex(); |
|
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diff
changeset
|
1001 |
final ConditionObject condition = sync.newCondition(); |
35394 | 1002 |
final BooleanLatch pleaseInterrupt = new BooleanLatch(); |
1003 |
Thread t = newStartedThread(new CheckedRunnable() { |
|
1004 |
public void realRun() { |
|
1005 |
sync.acquire(); |
|
1006 |
assertTrue(pleaseInterrupt.releaseShared(0)); |
|
45937
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diff
changeset
|
1007 |
condition.awaitUninterruptibly(); |
35394 | 1008 |
assertTrue(Thread.interrupted()); |
45937
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diff
changeset
|
1009 |
assertHasWaitersLocked(sync, condition, NO_THREADS); |
35394 | 1010 |
sync.release(); |
1011 |
}}); |
|
1012 |
||
1013 |
pleaseInterrupt.acquireShared(0); |
|
1014 |
sync.acquire(); |
|
45937
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diff
changeset
|
1015 |
assertHasWaitersLocked(sync, condition, t); |
35394 | 1016 |
sync.release(); |
1017 |
t.interrupt(); |
|
45937
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diff
changeset
|
1018 |
assertHasWaitersUnlocked(sync, condition, t); |
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diff
changeset
|
1019 |
assertThreadBlocks(t, Thread.State.WAITING); |
35394 | 1020 |
sync.acquire(); |
45937
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parents:
43522
diff
changeset
|
1021 |
assertHasWaitersLocked(sync, condition, t); |
35394 | 1022 |
assertHasExclusiveQueuedThreads(sync, NO_THREADS); |
45937
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diff
changeset
|
1023 |
condition.signal(); |
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parents:
43522
diff
changeset
|
1024 |
assertHasWaitersLocked(sync, condition, NO_THREADS); |
35394 | 1025 |
assertHasExclusiveQueuedThreads(sync, t); |
1026 |
sync.release(); |
|
1027 |
awaitTermination(t); |
|
1028 |
} |
|
1029 |
||
1030 |
/** |
|
1031 |
* await/awaitNanos/awaitUntil is interruptible |
|
1032 |
*/ |
|
1033 |
public void testInterruptible_await() { testInterruptible(AwaitMethod.await); } |
|
1034 |
public void testInterruptible_awaitTimed() { testInterruptible(AwaitMethod.awaitTimed); } |
|
1035 |
public void testInterruptible_awaitNanos() { testInterruptible(AwaitMethod.awaitNanos); } |
|
1036 |
public void testInterruptible_awaitUntil() { testInterruptible(AwaitMethod.awaitUntil); } |
|
1037 |
public void testInterruptible(final AwaitMethod awaitMethod) { |
|
1038 |
final Mutex sync = new Mutex(); |
|
1039 |
final ConditionObject c = sync.newCondition(); |
|
1040 |
final BooleanLatch pleaseInterrupt = new BooleanLatch(); |
|
1041 |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
|
1042 |
public void realRun() throws InterruptedException { |
|
1043 |
sync.acquire(); |
|
1044 |
assertTrue(pleaseInterrupt.releaseShared(0)); |
|
1045 |
await(c, awaitMethod); |
|
1046 |
}}); |
|
1047 |
||
1048 |
pleaseInterrupt.acquireShared(0); |
|
1049 |
t.interrupt(); |
|
1050 |
awaitTermination(t); |
|
1051 |
} |
|
1052 |
||
1053 |
/** |
|
1054 |
* signalAll wakes up all threads |
|
1055 |
*/ |
|
1056 |
public void testSignalAll_await() { testSignalAll(AwaitMethod.await); } |
|
1057 |
public void testSignalAll_awaitTimed() { testSignalAll(AwaitMethod.awaitTimed); } |
|
1058 |
public void testSignalAll_awaitNanos() { testSignalAll(AwaitMethod.awaitNanos); } |
|
1059 |
public void testSignalAll_awaitUntil() { testSignalAll(AwaitMethod.awaitUntil); } |
|
1060 |
public void testSignalAll(final AwaitMethod awaitMethod) { |
|
1061 |
final Mutex sync = new Mutex(); |
|
1062 |
final ConditionObject c = sync.newCondition(); |
|
1063 |
final BooleanLatch acquired1 = new BooleanLatch(); |
|
1064 |
final BooleanLatch acquired2 = new BooleanLatch(); |
|
1065 |
Thread t1 = newStartedThread(new CheckedRunnable() { |
|
1066 |
public void realRun() throws InterruptedException { |
|
1067 |
sync.acquire(); |
|
1068 |
acquired1.releaseShared(0); |
|
1069 |
await(c, awaitMethod); |
|
1070 |
sync.release(); |
|
1071 |
}}); |
|
1072 |
||
1073 |
Thread t2 = newStartedThread(new CheckedRunnable() { |
|
1074 |
public void realRun() throws InterruptedException { |
|
1075 |
sync.acquire(); |
|
1076 |
acquired2.releaseShared(0); |
|
1077 |
await(c, awaitMethod); |
|
1078 |
sync.release(); |
|
1079 |
}}); |
|
1080 |
||
1081 |
acquired1.acquireShared(0); |
|
1082 |
acquired2.acquireShared(0); |
|
1083 |
sync.acquire(); |
|
1084 |
assertHasWaitersLocked(sync, c, t1, t2); |
|
1085 |
assertHasExclusiveQueuedThreads(sync, NO_THREADS); |
|
1086 |
c.signalAll(); |
|
1087 |
assertHasWaitersLocked(sync, c, NO_THREADS); |
|
1088 |
assertHasExclusiveQueuedThreads(sync, t1, t2); |
|
1089 |
sync.release(); |
|
1090 |
awaitTermination(t1); |
|
1091 |
awaitTermination(t2); |
|
1092 |
} |
|
1093 |
||
1094 |
/** |
|
1095 |
* toString indicates current state |
|
1096 |
*/ |
|
1097 |
public void testToString() { |
|
1098 |
Mutex sync = new Mutex(); |
|
1099 |
assertTrue(sync.toString().contains("State = " + Mutex.UNLOCKED)); |
|
1100 |
sync.acquire(); |
|
1101 |
assertTrue(sync.toString().contains("State = " + Mutex.LOCKED)); |
|
1102 |
} |
|
1103 |
||
1104 |
/** |
|
1105 |
* A serialized AQS deserializes with current state, but no queued threads |
|
1106 |
*/ |
|
1107 |
public void testSerialization() { |
|
1108 |
Mutex sync = new Mutex(); |
|
1109 |
assertFalse(serialClone(sync).isHeldExclusively()); |
|
1110 |
sync.acquire(); |
|
1111 |
Thread t = newStartedThread(new InterruptedSyncRunnable(sync)); |
|
1112 |
waitForQueuedThread(sync, t); |
|
1113 |
assertTrue(sync.isHeldExclusively()); |
|
1114 |
||
1115 |
Mutex clone = serialClone(sync); |
|
1116 |
assertTrue(clone.isHeldExclusively()); |
|
1117 |
assertHasExclusiveQueuedThreads(sync, t); |
|
1118 |
assertHasExclusiveQueuedThreads(clone, NO_THREADS); |
|
1119 |
t.interrupt(); |
|
1120 |
awaitTermination(t); |
|
1121 |
sync.release(); |
|
1122 |
assertFalse(sync.isHeldExclusively()); |
|
1123 |
assertTrue(clone.isHeldExclusively()); |
|
1124 |
assertHasExclusiveQueuedThreads(sync, NO_THREADS); |
|
1125 |
assertHasExclusiveQueuedThreads(clone, NO_THREADS); |
|
1126 |
} |
|
1127 |
||
1128 |
/** |
|
1129 |
* tryReleaseShared setting state changes getState |
|
1130 |
*/ |
|
1131 |
public void testGetStateWithReleaseShared() { |
|
1132 |
final BooleanLatch l = new BooleanLatch(); |
|
1133 |
assertFalse(l.isSignalled()); |
|
1134 |
assertTrue(l.releaseShared(0)); |
|
1135 |
assertTrue(l.isSignalled()); |
|
1136 |
} |
|
1137 |
||
1138 |
/** |
|
1139 |
* releaseShared has no effect when already signalled |
|
1140 |
*/ |
|
1141 |
public void testReleaseShared() { |
|
1142 |
final BooleanLatch l = new BooleanLatch(); |
|
1143 |
assertFalse(l.isSignalled()); |
|
1144 |
assertTrue(l.releaseShared(0)); |
|
1145 |
assertTrue(l.isSignalled()); |
|
1146 |
assertTrue(l.releaseShared(0)); |
|
1147 |
assertTrue(l.isSignalled()); |
|
1148 |
} |
|
1149 |
||
1150 |
/** |
|
1151 |
* acquireSharedInterruptibly returns after release, but not before |
|
1152 |
*/ |
|
1153 |
public void testAcquireSharedInterruptibly() { |
|
1154 |
final BooleanLatch l = new BooleanLatch(); |
|
1155 |
||
1156 |
Thread t = newStartedThread(new CheckedRunnable() { |
|
1157 |
public void realRun() throws InterruptedException { |
|
1158 |
assertFalse(l.isSignalled()); |
|
1159 |
l.acquireSharedInterruptibly(0); |
|
1160 |
assertTrue(l.isSignalled()); |
|
1161 |
l.acquireSharedInterruptibly(0); |
|
1162 |
assertTrue(l.isSignalled()); |
|
1163 |
}}); |
|
1164 |
||
1165 |
waitForQueuedThread(l, t); |
|
1166 |
assertFalse(l.isSignalled()); |
|
45937
646816090183
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dl
parents:
43522
diff
changeset
|
1167 |
assertThreadBlocks(t, Thread.State.WAITING); |
35394 | 1168 |
assertHasSharedQueuedThreads(l, t); |
1169 |
assertTrue(l.releaseShared(0)); |
|
1170 |
assertTrue(l.isSignalled()); |
|
1171 |
awaitTermination(t); |
|
1172 |
} |
|
1173 |
||
1174 |
/** |
|
1175 |
* tryAcquireSharedNanos returns after release, but not before |
|
1176 |
*/ |
|
1177 |
public void testTryAcquireSharedNanos() { |
|
1178 |
final BooleanLatch l = new BooleanLatch(); |
|
1179 |
||
1180 |
Thread t = newStartedThread(new CheckedRunnable() { |
|
1181 |
public void realRun() throws InterruptedException { |
|
1182 |
assertFalse(l.isSignalled()); |
|
1183 |
long nanos = MILLISECONDS.toNanos(2 * LONG_DELAY_MS); |
|
1184 |
assertTrue(l.tryAcquireSharedNanos(0, nanos)); |
|
1185 |
assertTrue(l.isSignalled()); |
|
1186 |
assertTrue(l.tryAcquireSharedNanos(0, nanos)); |
|
1187 |
assertTrue(l.isSignalled()); |
|
1188 |
}}); |
|
1189 |
||
1190 |
waitForQueuedThread(l, t); |
|
1191 |
assertFalse(l.isSignalled()); |
|
45937
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parents:
43522
diff
changeset
|
1192 |
assertThreadBlocks(t, Thread.State.TIMED_WAITING); |
35394 | 1193 |
assertTrue(l.releaseShared(0)); |
1194 |
assertTrue(l.isSignalled()); |
|
1195 |
awaitTermination(t); |
|
1196 |
} |
|
1197 |
||
1198 |
/** |
|
1199 |
* acquireSharedInterruptibly is interruptible |
|
1200 |
*/ |
|
1201 |
public void testAcquireSharedInterruptibly_Interruptible() { |
|
1202 |
final BooleanLatch l = new BooleanLatch(); |
|
1203 |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
|
1204 |
public void realRun() throws InterruptedException { |
|
1205 |
assertFalse(l.isSignalled()); |
|
1206 |
l.acquireSharedInterruptibly(0); |
|
1207 |
}}); |
|
1208 |
||
1209 |
waitForQueuedThread(l, t); |
|
1210 |
assertFalse(l.isSignalled()); |
|
1211 |
t.interrupt(); |
|
1212 |
awaitTermination(t); |
|
1213 |
assertFalse(l.isSignalled()); |
|
1214 |
} |
|
1215 |
||
1216 |
/** |
|
1217 |
* tryAcquireSharedNanos is interruptible |
|
1218 |
*/ |
|
1219 |
public void testTryAcquireSharedNanos_Interruptible() { |
|
1220 |
final BooleanLatch l = new BooleanLatch(); |
|
1221 |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
|
1222 |
public void realRun() throws InterruptedException { |
|
1223 |
assertFalse(l.isSignalled()); |
|
1224 |
long nanos = MILLISECONDS.toNanos(2 * LONG_DELAY_MS); |
|
1225 |
l.tryAcquireSharedNanos(0, nanos); |
|
1226 |
}}); |
|
1227 |
||
1228 |
waitForQueuedThread(l, t); |
|
1229 |
assertFalse(l.isSignalled()); |
|
1230 |
t.interrupt(); |
|
1231 |
awaitTermination(t); |
|
1232 |
assertFalse(l.isSignalled()); |
|
1233 |
} |
|
1234 |
||
1235 |
/** |
|
1236 |
* tryAcquireSharedNanos times out if not released before timeout |
|
1237 |
*/ |
|
1238 |
public void testTryAcquireSharedNanos_Timeout() { |
|
1239 |
final BooleanLatch l = new BooleanLatch(); |
|
1240 |
final BooleanLatch observedQueued = new BooleanLatch(); |
|
1241 |
Thread t = newStartedThread(new CheckedRunnable() { |
|
1242 |
public void realRun() throws InterruptedException { |
|
1243 |
assertFalse(l.isSignalled()); |
|
1244 |
for (long millis = timeoutMillis(); |
|
1245 |
!observedQueued.isSignalled(); |
|
1246 |
millis *= 2) { |
|
1247 |
long nanos = MILLISECONDS.toNanos(millis); |
|
1248 |
long startTime = System.nanoTime(); |
|
1249 |
assertFalse(l.tryAcquireSharedNanos(0, nanos)); |
|
1250 |
assertTrue(millisElapsedSince(startTime) >= millis); |
|
1251 |
} |
|
1252 |
assertFalse(l.isSignalled()); |
|
1253 |
}}); |
|
1254 |
||
1255 |
waitForQueuedThread(l, t); |
|
1256 |
observedQueued.releaseShared(0); |
|
1257 |
assertFalse(l.isSignalled()); |
|
1258 |
awaitTermination(t); |
|
1259 |
assertFalse(l.isSignalled()); |
|
1260 |
} |
|
1261 |
||
1262 |
/** |
|
1263 |
* awaitNanos/timed await with 0 wait times out immediately |
|
1264 |
*/ |
|
1265 |
public void testAwait_Zero() throws InterruptedException { |
|
1266 |
final Mutex sync = new Mutex(); |
|
1267 |
final ConditionObject c = sync.newCondition(); |
|
1268 |
sync.acquire(); |
|
1269 |
assertTrue(c.awaitNanos(0L) <= 0); |
|
1270 |
assertFalse(c.await(0L, NANOSECONDS)); |
|
1271 |
sync.release(); |
|
1272 |
} |
|
1273 |
||
1274 |
/** |
|
1275 |
* awaitNanos/timed await with maximum negative wait times does not underflow |
|
1276 |
*/ |
|
1277 |
public void testAwait_NegativeInfinity() throws InterruptedException { |
|
1278 |
final Mutex sync = new Mutex(); |
|
1279 |
final ConditionObject c = sync.newCondition(); |
|
1280 |
sync.acquire(); |
|
1281 |
assertTrue(c.awaitNanos(Long.MIN_VALUE) <= 0); |
|
1282 |
assertFalse(c.await(Long.MIN_VALUE, NANOSECONDS)); |
|
1283 |
sync.release(); |
|
1284 |
} |
|
1285 |
||
48046
98801bd22f5b
8191937: Lost interrupt in AbstractQueuedSynchronizer when tryAcquire methods throw
dl
parents:
47302
diff
changeset
|
1286 |
/** |
98801bd22f5b
8191937: Lost interrupt in AbstractQueuedSynchronizer when tryAcquire methods throw
dl
parents:
47302
diff
changeset
|
1287 |
* Tests scenario for |
98801bd22f5b
8191937: Lost interrupt in AbstractQueuedSynchronizer when tryAcquire methods throw
dl
parents:
47302
diff
changeset
|
1288 |
* JDK-8191937: Lost interrupt in AbstractQueuedSynchronizer when tryAcquire methods throw |
58138
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1289 |
* ant -Djsr166.tckTestClass=AbstractQueuedLongSynchronizerTest -Djsr166.methodFilter=testInterruptedFailingAcquire -Djsr166.runsPerTest=10000 tck |
48046
98801bd22f5b
8191937: Lost interrupt in AbstractQueuedSynchronizer when tryAcquire methods throw
dl
parents:
47302
diff
changeset
|
1290 |
*/ |
58138
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1291 |
public void testInterruptedFailingAcquire() throws Throwable { |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1292 |
class PleaseThrow extends RuntimeException {} |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1293 |
final PleaseThrow ex = new PleaseThrow(); |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1294 |
final AtomicBoolean thrown = new AtomicBoolean(); |
48046
98801bd22f5b
8191937: Lost interrupt in AbstractQueuedSynchronizer when tryAcquire methods throw
dl
parents:
47302
diff
changeset
|
1295 |
|
98801bd22f5b
8191937: Lost interrupt in AbstractQueuedSynchronizer when tryAcquire methods throw
dl
parents:
47302
diff
changeset
|
1296 |
// A synchronizer only offering a choice of failure modes |
98801bd22f5b
8191937: Lost interrupt in AbstractQueuedSynchronizer when tryAcquire methods throw
dl
parents:
47302
diff
changeset
|
1297 |
class Sync extends AbstractQueuedLongSynchronizer { |
58138
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1298 |
volatile boolean pleaseThrow; |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1299 |
void maybeThrow() { |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1300 |
if (pleaseThrow) { |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1301 |
// assert: tryAcquire methods can throw at most once |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1302 |
if (! thrown.compareAndSet(false, true)) |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1303 |
throw new AssertionError(); |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1304 |
throw ex; |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1305 |
} |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1306 |
} |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1307 |
|
48046
98801bd22f5b
8191937: Lost interrupt in AbstractQueuedSynchronizer when tryAcquire methods throw
dl
parents:
47302
diff
changeset
|
1308 |
@Override protected boolean tryAcquire(long ignored) { |
58138
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1309 |
maybeThrow(); |
48046
98801bd22f5b
8191937: Lost interrupt in AbstractQueuedSynchronizer when tryAcquire methods throw
dl
parents:
47302
diff
changeset
|
1310 |
return false; |
98801bd22f5b
8191937: Lost interrupt in AbstractQueuedSynchronizer when tryAcquire methods throw
dl
parents:
47302
diff
changeset
|
1311 |
} |
98801bd22f5b
8191937: Lost interrupt in AbstractQueuedSynchronizer when tryAcquire methods throw
dl
parents:
47302
diff
changeset
|
1312 |
@Override protected long tryAcquireShared(long ignored) { |
58138
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1313 |
maybeThrow(); |
48046
98801bd22f5b
8191937: Lost interrupt in AbstractQueuedSynchronizer when tryAcquire methods throw
dl
parents:
47302
diff
changeset
|
1314 |
return -1; |
98801bd22f5b
8191937: Lost interrupt in AbstractQueuedSynchronizer when tryAcquire methods throw
dl
parents:
47302
diff
changeset
|
1315 |
} |
98801bd22f5b
8191937: Lost interrupt in AbstractQueuedSynchronizer when tryAcquire methods throw
dl
parents:
47302
diff
changeset
|
1316 |
@Override protected boolean tryRelease(long ignored) { |
98801bd22f5b
8191937: Lost interrupt in AbstractQueuedSynchronizer when tryAcquire methods throw
dl
parents:
47302
diff
changeset
|
1317 |
return true; |
98801bd22f5b
8191937: Lost interrupt in AbstractQueuedSynchronizer when tryAcquire methods throw
dl
parents:
47302
diff
changeset
|
1318 |
} |
98801bd22f5b
8191937: Lost interrupt in AbstractQueuedSynchronizer when tryAcquire methods throw
dl
parents:
47302
diff
changeset
|
1319 |
@Override protected boolean tryReleaseShared(long ignored) { |
98801bd22f5b
8191937: Lost interrupt in AbstractQueuedSynchronizer when tryAcquire methods throw
dl
parents:
47302
diff
changeset
|
1320 |
return true; |
98801bd22f5b
8191937: Lost interrupt in AbstractQueuedSynchronizer when tryAcquire methods throw
dl
parents:
47302
diff
changeset
|
1321 |
} |
98801bd22f5b
8191937: Lost interrupt in AbstractQueuedSynchronizer when tryAcquire methods throw
dl
parents:
47302
diff
changeset
|
1322 |
} |
98801bd22f5b
8191937: Lost interrupt in AbstractQueuedSynchronizer when tryAcquire methods throw
dl
parents:
47302
diff
changeset
|
1323 |
|
98801bd22f5b
8191937: Lost interrupt in AbstractQueuedSynchronizer when tryAcquire methods throw
dl
parents:
47302
diff
changeset
|
1324 |
final Sync s = new Sync(); |
58138
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1325 |
final boolean acquireInterruptibly = randomBoolean(); |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1326 |
final Action[] uninterruptibleAcquireActions = { |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1327 |
() -> s.acquire(1), |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1328 |
() -> s.acquireShared(1), |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1329 |
}; |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1330 |
final long nanosTimeout = MILLISECONDS.toNanos(2 * LONG_DELAY_MS); |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1331 |
final Action[] interruptibleAcquireActions = { |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1332 |
() -> s.acquireInterruptibly(1), |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1333 |
() -> s.acquireSharedInterruptibly(1), |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1334 |
() -> s.tryAcquireNanos(1, nanosTimeout), |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1335 |
() -> s.tryAcquireSharedNanos(1, nanosTimeout), |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1336 |
}; |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1337 |
final Action[] releaseActions = { |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1338 |
() -> s.release(1), |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1339 |
() -> s.releaseShared(1), |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1340 |
}; |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1341 |
final Action acquireAction = acquireInterruptibly |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1342 |
? chooseRandomly(interruptibleAcquireActions) |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1343 |
: chooseRandomly(uninterruptibleAcquireActions); |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1344 |
final Action releaseAction |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1345 |
= chooseRandomly(releaseActions); |
48046
98801bd22f5b
8191937: Lost interrupt in AbstractQueuedSynchronizer when tryAcquire methods throw
dl
parents:
47302
diff
changeset
|
1346 |
|
58138
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1347 |
// From os_posix.cpp: |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1348 |
// |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1349 |
// NOTE that since there is no "lock" around the interrupt and |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1350 |
// is_interrupted operations, there is the possibility that the |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1351 |
// interrupted flag (in osThread) will be "false" but that the |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1352 |
// low-level events will be in the signaled state. This is |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1353 |
// intentional. The effect of this is that Object.wait() and |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1354 |
// LockSupport.park() will appear to have a spurious wakeup, which |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1355 |
// is allowed and not harmful, and the possibility is so rare that |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1356 |
// it is not worth the added complexity to add yet another lock. |
48046
98801bd22f5b
8191937: Lost interrupt in AbstractQueuedSynchronizer when tryAcquire methods throw
dl
parents:
47302
diff
changeset
|
1357 |
final Thread thread = newStartedThread(new CheckedRunnable() { |
58138
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1358 |
public void realRun() throws Throwable { |
48046
98801bd22f5b
8191937: Lost interrupt in AbstractQueuedSynchronizer when tryAcquire methods throw
dl
parents:
47302
diff
changeset
|
1359 |
try { |
58138
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1360 |
acquireAction.run(); |
48046
98801bd22f5b
8191937: Lost interrupt in AbstractQueuedSynchronizer when tryAcquire methods throw
dl
parents:
47302
diff
changeset
|
1361 |
shouldThrow(); |
58138
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1362 |
} catch (InterruptedException possible) { |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1363 |
assertTrue(acquireInterruptibly); |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1364 |
assertFalse(Thread.interrupted()); |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1365 |
} catch (PleaseThrow possible) { |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1366 |
awaitInterrupted(); |
48046
98801bd22f5b
8191937: Lost interrupt in AbstractQueuedSynchronizer when tryAcquire methods throw
dl
parents:
47302
diff
changeset
|
1367 |
} |
98801bd22f5b
8191937: Lost interrupt in AbstractQueuedSynchronizer when tryAcquire methods throw
dl
parents:
47302
diff
changeset
|
1368 |
}}); |
58138
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1369 |
for (long startTime = 0L;; ) { |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1370 |
waitForThreadToEnterWaitState(thread); |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1371 |
if (s.getFirstQueuedThread() == thread |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1372 |
&& s.hasQueuedPredecessors() |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1373 |
&& s.hasQueuedThreads() |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1374 |
&& s.getQueueLength() == 1 |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1375 |
&& s.hasContended()) |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1376 |
break; |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1377 |
if (startTime == 0L) |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1378 |
startTime = System.nanoTime(); |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1379 |
else if (millisElapsedSince(startTime) > LONG_DELAY_MS) |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1380 |
fail("timed out waiting for AQS state: " |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1381 |
+ "thread state=" + thread.getState() |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1382 |
+ ", queued threads=" + s.getQueuedThreads()); |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1383 |
Thread.yield(); |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1384 |
} |
48046
98801bd22f5b
8191937: Lost interrupt in AbstractQueuedSynchronizer when tryAcquire methods throw
dl
parents:
47302
diff
changeset
|
1385 |
|
98801bd22f5b
8191937: Lost interrupt in AbstractQueuedSynchronizer when tryAcquire methods throw
dl
parents:
47302
diff
changeset
|
1386 |
s.pleaseThrow = true; |
58138
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1387 |
// release and interrupt, in random order |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1388 |
if (randomBoolean()) { |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1389 |
thread.interrupt(); |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1390 |
releaseAction.run(); |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1391 |
} else { |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1392 |
releaseAction.run(); |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1393 |
thread.interrupt(); |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1394 |
} |
48046
98801bd22f5b
8191937: Lost interrupt in AbstractQueuedSynchronizer when tryAcquire methods throw
dl
parents:
47302
diff
changeset
|
1395 |
awaitTermination(thread); |
58138
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1396 |
|
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1397 |
if (! acquireInterruptibly) |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1398 |
assertTrue(thrown.get()); |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1399 |
|
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1400 |
assertNull(s.getFirstQueuedThread()); |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1401 |
assertFalse(s.hasQueuedPredecessors()); |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1402 |
assertFalse(s.hasQueuedThreads()); |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1403 |
assertEquals(0, s.getQueueLength()); |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1404 |
assertTrue(s.getQueuedThreads().isEmpty()); |
1e4270f875ee
8225490: Miscellaneous changes imported from jsr166 CVS 2019-09
dl
parents:
50764
diff
changeset
|
1405 |
assertTrue(s.hasContended()); |
48046
98801bd22f5b
8191937: Lost interrupt in AbstractQueuedSynchronizer when tryAcquire methods throw
dl
parents:
47302
diff
changeset
|
1406 |
} |
98801bd22f5b
8191937: Lost interrupt in AbstractQueuedSynchronizer when tryAcquire methods throw
dl
parents:
47302
diff
changeset
|
1407 |
|
35394 | 1408 |
} |