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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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|
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import junit.framework.*; |
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import java.util.*; |
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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import java.util.concurrent.locks.AbstractQueuedSynchronizer; |
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import java.util.concurrent.locks.AbstractQueuedSynchronizer.ConditionObject; |
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|
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public class AbstractQueuedSynchronizerTest extends JSR166TestCase { |
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public static void main(String[] args) { |
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junit.textui.TestRunner.run(suite()); |
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} |
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public static Test suite() { |
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return new TestSuite(AbstractQueuedSynchronizerTest.class); |
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} |
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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. Other |
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* methods/features of AbstractQueuedSynchronizer are tested via |
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* other test classes, including those for ReentrantLock, |
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* ReentrantReadWriteLock, and Semaphore. |
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*/ |
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static class Mutex extends AbstractQueuedSynchronizer { |
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/** An eccentric value for locked synchronizer state. */ |
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static final int LOCKED = (1 << 31) | (1 << 15); |
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|
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static final int UNLOCKED = 0; |
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|
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@Override public boolean isHeldExclusively() { |
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int 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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|
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@Override public boolean tryAcquire(int acquires) { |
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assertEquals(LOCKED, acquires); |
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return compareAndSetState(UNLOCKED, LOCKED); |
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} |
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|
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@Override public boolean tryRelease(int releases) { |
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if (getState() != LOCKED) throw new IllegalMonitorStateException(); |
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assertEquals(LOCKED, releases); |
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setState(UNLOCKED); |
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return true; |
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} |
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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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|
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public boolean tryAcquire() { |
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return tryAcquire(LOCKED); |
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} |
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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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|
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public void acquire() { |
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acquire(LOCKED); |
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} |
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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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|
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public void release() { |
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release(LOCKED); |
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} |
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|
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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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/** |
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* A simple latch class, to test shared mode. |
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*/ |
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static class BooleanLatch extends AbstractQueuedSynchronizer { |
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public boolean isSignalled() { return getState() != 0; } |
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|
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public int tryAcquireShared(int ignore) { |
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return isSignalled() ? 1 : -1; |
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} |
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|
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public boolean tryReleaseShared(int ignore) { |
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setState(1); |
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return true; |
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} |
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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. |
102 |
*/ |
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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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/** |
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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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|
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/** A constant to clarify calls to checking methods below. */ |
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final static Thread[] NO_THREADS = new Thread[0]; |
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|
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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(AbstractQueuedSynchronizer sync, 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 AssertionFailedError("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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/** |
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* Checks that sync has exactly the given queued threads. |
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*/ |
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void assertHasQueuedThreads(AbstractQueuedSynchronizer 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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/** |
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* Checks that sync has exactly the given (exclusive) queued threads. |
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*/ |
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void assertHasExclusiveQueuedThreads(AbstractQueuedSynchronizer 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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/** |
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* Checks that sync has exactly the given (shared) queued threads. |
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*/ |
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void assertHasSharedQueuedThreads(AbstractQueuedSynchronizer 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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/** |
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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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/** |
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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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|
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enum AwaitMethod { await, awaitTimed, awaitNanos, awaitUntil }; |
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|
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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 nanosTimeout = MILLISECONDS.toNanos(timeoutMillis); |
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long nanosRemaining = c.awaitNanos(nanosTimeout); |
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assertTrue(nanosRemaining > 0); |
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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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} |
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} |
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|
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/** |
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* 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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long timeoutMillis = timeoutMillis(); |
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long startTime = System.nanoTime(); |
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try { |
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switch (awaitMethod) { |
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case awaitTimed: |
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assertFalse(c.await(timeoutMillis, MILLISECONDS)); |
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break; |
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case awaitNanos: |
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long nanosTimeout = MILLISECONDS.toNanos(timeoutMillis); |
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long nanosRemaining = c.awaitNanos(nanosTimeout); |
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assertTrue(nanosRemaining <= 0); |
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break; |
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case awaitUntil: |
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assertFalse(c.awaitUntil(delayedDate(timeoutMillis))); |
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break; |
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default: |
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throw new UnsupportedOperationException(); |
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} |
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} catch (InterruptedException ie) { threadUnexpectedException(ie); } |
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assertTrue(millisElapsedSince(startTime) >= timeoutMillis); |
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} |
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|
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/** |
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* isHeldExclusively is false upon construction |
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*/ |
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public void testIsHeldExclusively() { |
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Mutex sync = new Mutex(); |
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assertFalse(sync.isHeldExclusively()); |
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} |
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|
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/** |
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* acquiring released sync succeeds |
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*/ |
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public void testAcquire() { |
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Mutex sync = new Mutex(); |
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sync.acquire(); |
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assertTrue(sync.isHeldExclusively()); |
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sync.release(); |
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assertFalse(sync.isHeldExclusively()); |
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} |
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|
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/** |
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* tryAcquire on a released sync succeeds |
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*/ |
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public void testTryAcquire() { |
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Mutex sync = new Mutex(); |
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assertTrue(sync.tryAcquire()); |
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assertTrue(sync.isHeldExclusively()); |
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sync.release(); |
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assertFalse(sync.isHeldExclusively()); |
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} |
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|
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/** |
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* hasQueuedThreads reports whether there are waiting threads |
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*/ |
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public void testHasQueuedThreads() { |
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final Mutex sync = new Mutex(); |
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assertFalse(sync.hasQueuedThreads()); |
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sync.acquire(); |
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Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync)); |
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waitForQueuedThread(sync, t1); |
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assertTrue(sync.hasQueuedThreads()); |
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Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync)); |
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waitForQueuedThread(sync, t2); |
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assertTrue(sync.hasQueuedThreads()); |
297 |
t1.interrupt(); |
298 |
awaitTermination(t1); |
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assertTrue(sync.hasQueuedThreads()); |
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sync.release(); |
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awaitTermination(t2); |
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assertFalse(sync.hasQueuedThreads()); |
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} |
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|
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/** |
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* isQueued(null) throws NullPointerException |
307 |
*/ |
308 |
public void testIsQueuedNPE() { |
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final Mutex sync = new Mutex(); |
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try { |
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sync.isQueued(null); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
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} |
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|
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/** |
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* isQueued reports whether a thread is queued |
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*/ |
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public void testIsQueued() { |
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final Mutex sync = new Mutex(); |
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Thread t1 = new Thread(new InterruptedSyncRunnable(sync)); |
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Thread t2 = new Thread(new InterruptibleSyncRunnable(sync)); |
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assertFalse(sync.isQueued(t1)); |
324 |
assertFalse(sync.isQueued(t2)); |
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sync.acquire(); |
326 |
t1.start(); |
327 |
waitForQueuedThread(sync, t1); |
328 |
assertTrue(sync.isQueued(t1)); |
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assertFalse(sync.isQueued(t2)); |
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t2.start(); |
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waitForQueuedThread(sync, t2); |
332 |
assertTrue(sync.isQueued(t1)); |
333 |
assertTrue(sync.isQueued(t2)); |
334 |
t1.interrupt(); |
335 |
awaitTermination(t1); |
336 |
assertFalse(sync.isQueued(t1)); |
337 |
assertTrue(sync.isQueued(t2)); |
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sync.release(); |
339 |
awaitTermination(t2); |
340 |
assertFalse(sync.isQueued(t1)); |
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assertFalse(sync.isQueued(t2)); |
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} |
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|
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/** |
345 |
* getFirstQueuedThread returns first waiting thread or null if none |
346 |
*/ |
347 |
public void testGetFirstQueuedThread() { |
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final Mutex sync = new Mutex(); |
349 |
assertNull(sync.getFirstQueuedThread()); |
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sync.acquire(); |
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Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync)); |
352 |
waitForQueuedThread(sync, t1); |
353 |
assertEquals(t1, sync.getFirstQueuedThread()); |
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Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync)); |
355 |
waitForQueuedThread(sync, t2); |
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assertEquals(t1, sync.getFirstQueuedThread()); |
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t1.interrupt(); |
358 |
awaitTermination(t1); |
359 |
assertEquals(t2, sync.getFirstQueuedThread()); |
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sync.release(); |
361 |
awaitTermination(t2); |
362 |
assertNull(sync.getFirstQueuedThread()); |
363 |
} |
364 |
|
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/** |
366 |
* hasContended reports false if no thread has ever blocked, else true |
367 |
*/ |
368 |
public void testHasContended() { |
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final Mutex sync = new Mutex(); |
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assertFalse(sync.hasContended()); |
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sync.acquire(); |
372 |
assertFalse(sync.hasContended()); |
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Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync)); |
374 |
waitForQueuedThread(sync, t1); |
375 |
assertTrue(sync.hasContended()); |
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Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync)); |
377 |
waitForQueuedThread(sync, t2); |
378 |
assertTrue(sync.hasContended()); |
379 |
t1.interrupt(); |
380 |
awaitTermination(t1); |
381 |
assertTrue(sync.hasContended()); |
382 |
sync.release(); |
383 |
awaitTermination(t2); |
384 |
assertTrue(sync.hasContended()); |
385 |
} |
386 |
|
387 |
/** |
388 |
* getQueuedThreads returns all waiting threads |
389 |
*/ |
390 |
public void testGetQueuedThreads() { |
391 |
final Mutex sync = new Mutex(); |
392 |
Thread t1 = new Thread(new InterruptedSyncRunnable(sync)); |
393 |
Thread t2 = new Thread(new InterruptibleSyncRunnable(sync)); |
394 |
assertHasExclusiveQueuedThreads(sync, NO_THREADS); |
395 |
sync.acquire(); |
396 |
assertHasExclusiveQueuedThreads(sync, NO_THREADS); |
397 |
t1.start(); |
398 |
waitForQueuedThread(sync, t1); |
399 |
assertHasExclusiveQueuedThreads(sync, t1); |
400 |
assertTrue(sync.getQueuedThreads().contains(t1)); |
401 |
assertFalse(sync.getQueuedThreads().contains(t2)); |
402 |
t2.start(); |
403 |
waitForQueuedThread(sync, t2); |
404 |
assertHasExclusiveQueuedThreads(sync, t1, t2); |
405 |
assertTrue(sync.getQueuedThreads().contains(t1)); |
406 |
assertTrue(sync.getQueuedThreads().contains(t2)); |
407 |
t1.interrupt(); |
408 |
awaitTermination(t1); |
409 |
assertHasExclusiveQueuedThreads(sync, t2); |
410 |
sync.release(); |
411 |
awaitTermination(t2); |
412 |
assertHasExclusiveQueuedThreads(sync, NO_THREADS); |
413 |
} |
414 |
|
415 |
/** |
416 |
* getExclusiveQueuedThreads returns all exclusive waiting threads |
417 |
*/ |
418 |
public void testGetExclusiveQueuedThreads() { |
419 |
final Mutex sync = new Mutex(); |
420 |
Thread t1 = new Thread(new InterruptedSyncRunnable(sync)); |
421 |
Thread t2 = new Thread(new InterruptibleSyncRunnable(sync)); |
422 |
assertHasExclusiveQueuedThreads(sync, NO_THREADS); |
423 |
sync.acquire(); |
424 |
assertHasExclusiveQueuedThreads(sync, NO_THREADS); |
425 |
t1.start(); |
426 |
waitForQueuedThread(sync, t1); |
427 |
assertHasExclusiveQueuedThreads(sync, t1); |
428 |
assertTrue(sync.getExclusiveQueuedThreads().contains(t1)); |
429 |
assertFalse(sync.getExclusiveQueuedThreads().contains(t2)); |
430 |
t2.start(); |
431 |
waitForQueuedThread(sync, t2); |
432 |
assertHasExclusiveQueuedThreads(sync, t1, t2); |
433 |
assertTrue(sync.getExclusiveQueuedThreads().contains(t1)); |
434 |
assertTrue(sync.getExclusiveQueuedThreads().contains(t2)); |
435 |
t1.interrupt(); |
436 |
awaitTermination(t1); |
437 |
assertHasExclusiveQueuedThreads(sync, t2); |
438 |
sync.release(); |
439 |
awaitTermination(t2); |
440 |
assertHasExclusiveQueuedThreads(sync, NO_THREADS); |
441 |
} |
442 |
|
443 |
/** |
444 |
* getSharedQueuedThreads does not include exclusively waiting threads |
445 |
*/ |
446 |
public void testGetSharedQueuedThreads_Exclusive() { |
447 |
final Mutex sync = new Mutex(); |
448 |
assertTrue(sync.getSharedQueuedThreads().isEmpty()); |
449 |
sync.acquire(); |
450 |
assertTrue(sync.getSharedQueuedThreads().isEmpty()); |
451 |
Thread t1 = newStartedThread(new InterruptedSyncRunnable(sync)); |
452 |
waitForQueuedThread(sync, t1); |
453 |
assertTrue(sync.getSharedQueuedThreads().isEmpty()); |
454 |
Thread t2 = newStartedThread(new InterruptibleSyncRunnable(sync)); |
455 |
waitForQueuedThread(sync, t2); |
456 |
assertTrue(sync.getSharedQueuedThreads().isEmpty()); |
457 |
t1.interrupt(); |
458 |
awaitTermination(t1); |
459 |
assertTrue(sync.getSharedQueuedThreads().isEmpty()); |
460 |
sync.release(); |
461 |
awaitTermination(t2); |
462 |
assertTrue(sync.getSharedQueuedThreads().isEmpty()); |
463 |
} |
464 |
|
465 |
/** |
466 |
* getSharedQueuedThreads returns all shared waiting threads |
467 |
*/ |
468 |
public void testGetSharedQueuedThreads_Shared() { |
469 |
final BooleanLatch l = new BooleanLatch(); |
470 |
assertHasSharedQueuedThreads(l, NO_THREADS); |
471 |
Thread t1 = newStartedThread(new CheckedInterruptedRunnable() { |
472 |
public void realRun() throws InterruptedException { |
473 |
l.acquireSharedInterruptibly(0); |
474 |
}}); |
475 |
waitForQueuedThread(l, t1); |
476 |
assertHasSharedQueuedThreads(l, t1); |
477 |
Thread t2 = newStartedThread(new CheckedRunnable() { |
478 |
public void realRun() throws InterruptedException { |
479 |
l.acquireSharedInterruptibly(0); |
480 |
}}); |
481 |
waitForQueuedThread(l, t2); |
482 |
assertHasSharedQueuedThreads(l, t1, t2); |
483 |
t1.interrupt(); |
484 |
awaitTermination(t1); |
485 |
assertHasSharedQueuedThreads(l, t2); |
486 |
assertTrue(l.releaseShared(0)); |
487 |
awaitTermination(t2); |
488 |
assertHasSharedQueuedThreads(l, NO_THREADS); |
489 |
} |
490 |
|
491 |
/** |
492 |
* tryAcquireNanos is interruptible |
493 |
*/ |
494 |
public void testTryAcquireNanos_Interruptible() { |
495 |
final Mutex sync = new Mutex(); |
496 |
sync.acquire(); |
497 |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
498 |
public void realRun() throws InterruptedException { |
499 |
sync.tryAcquireNanos(MILLISECONDS.toNanos(2 * LONG_DELAY_MS)); |
500 |
}}); |
501 |
|
502 |
waitForQueuedThread(sync, t); |
503 |
t.interrupt(); |
504 |
awaitTermination(t); |
505 |
} |
506 |
|
507 |
/** |
508 |
* tryAcquire on exclusively held sync fails |
509 |
*/ |
510 |
public void testTryAcquireWhenSynced() { |
511 |
final Mutex sync = new Mutex(); |
512 |
sync.acquire(); |
513 |
Thread t = newStartedThread(new CheckedRunnable() { |
514 |
public void realRun() { |
515 |
assertFalse(sync.tryAcquire()); |
516 |
}}); |
517 |
|
518 |
awaitTermination(t); |
519 |
sync.release(); |
520 |
} |
521 |
|
522 |
/** |
523 |
* tryAcquireNanos on an exclusively held sync times out |
524 |
*/ |
525 |
public void testAcquireNanos_Timeout() { |
526 |
final Mutex sync = new Mutex(); |
527 |
sync.acquire(); |
528 |
Thread t = newStartedThread(new CheckedRunnable() { |
529 |
public void realRun() throws InterruptedException { |
530 |
long startTime = System.nanoTime(); |
531 |
long nanos = MILLISECONDS.toNanos(timeoutMillis()); |
532 |
assertFalse(sync.tryAcquireNanos(nanos)); |
533 |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
534 |
}}); |
535 |
|
536 |
awaitTermination(t); |
537 |
sync.release(); |
538 |
} |
539 |
|
540 |
/** |
541 |
* getState is true when acquired and false when not |
542 |
*/ |
543 |
public void testGetState() { |
544 |
final Mutex sync = new Mutex(); |
545 |
sync.acquire(); |
546 |
assertTrue(sync.isHeldExclusively()); |
547 |
sync.release(); |
548 |
assertFalse(sync.isHeldExclusively()); |
549 |
|
550 |
final BooleanLatch acquired = new BooleanLatch(); |
551 |
final BooleanLatch done = new BooleanLatch(); |
552 |
Thread t = newStartedThread(new CheckedRunnable() { |
553 |
public void realRun() throws InterruptedException { |
554 |
sync.acquire(); |
555 |
assertTrue(acquired.releaseShared(0)); |
556 |
done.acquireShared(0); |
557 |
sync.release(); |
558 |
}}); |
559 |
|
560 |
acquired.acquireShared(0); |
561 |
assertTrue(sync.isHeldExclusively()); |
562 |
assertTrue(done.releaseShared(0)); |
563 |
awaitTermination(t); |
564 |
assertFalse(sync.isHeldExclusively()); |
565 |
} |
566 |
|
567 |
/** |
568 |
* acquireInterruptibly succeeds when released, else is interruptible |
569 |
*/ |
570 |
public void testAcquireInterruptibly() throws InterruptedException { |
571 |
final Mutex sync = new Mutex(); |
572 |
final BooleanLatch threadStarted = new BooleanLatch(); |
573 |
sync.acquireInterruptibly(); |
574 |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
575 |
public void realRun() throws InterruptedException { |
576 |
assertTrue(threadStarted.releaseShared(0)); |
577 |
sync.acquireInterruptibly(); |
578 |
}}); |
579 |
|
580 |
threadStarted.acquireShared(0); |
581 |
waitForQueuedThread(sync, t); |
582 |
t.interrupt(); |
583 |
awaitTermination(t); |
584 |
assertTrue(sync.isHeldExclusively()); |
585 |
} |
586 |
|
587 |
/** |
588 |
* owns is true for a condition created by sync else false |
589 |
*/ |
590 |
public void testOwns() { |
591 |
final Mutex sync = new Mutex(); |
592 |
final ConditionObject c = sync.newCondition(); |
593 |
final Mutex sync2 = new Mutex(); |
594 |
assertTrue(sync.owns(c)); |
595 |
assertFalse(sync2.owns(c)); |
596 |
} |
597 |
|
598 |
/** |
599 |
* Calling await without holding sync throws IllegalMonitorStateException |
600 |
*/ |
601 |
public void testAwait_IMSE() { |
602 |
final Mutex sync = new Mutex(); |
603 |
final ConditionObject c = sync.newCondition(); |
604 |
for (AwaitMethod awaitMethod : AwaitMethod.values()) { |
605 |
long startTime = System.nanoTime(); |
606 |
try { |
607 |
await(c, awaitMethod); |
608 |
shouldThrow(); |
609 |
} catch (IllegalMonitorStateException success) { |
610 |
} catch (InterruptedException e) { threadUnexpectedException(e); } |
611 |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
612 |
} |
613 |
} |
614 |
|
615 |
/** |
616 |
* Calling signal without holding sync throws IllegalMonitorStateException |
617 |
*/ |
618 |
public void testSignal_IMSE() { |
619 |
final Mutex sync = new Mutex(); |
620 |
final ConditionObject c = sync.newCondition(); |
621 |
try { |
622 |
c.signal(); |
623 |
shouldThrow(); |
624 |
} catch (IllegalMonitorStateException success) {} |
625 |
assertHasWaitersUnlocked(sync, c, NO_THREADS); |
626 |
} |
627 |
|
628 |
/** |
629 |
* Calling signalAll without holding sync throws IllegalMonitorStateException |
630 |
*/ |
631 |
public void testSignalAll_IMSE() { |
632 |
final Mutex sync = new Mutex(); |
633 |
final ConditionObject c = sync.newCondition(); |
634 |
try { |
635 |
c.signalAll(); |
636 |
shouldThrow(); |
637 |
} catch (IllegalMonitorStateException success) {} |
638 |
} |
639 |
|
640 |
/** |
641 |
* await/awaitNanos/awaitUntil without a signal times out |
642 |
*/ |
643 |
public void testAwaitTimed_Timeout() { testAwait_Timeout(AwaitMethod.awaitTimed); } |
644 |
public void testAwaitNanos_Timeout() { testAwait_Timeout(AwaitMethod.awaitNanos); } |
645 |
public void testAwaitUntil_Timeout() { testAwait_Timeout(AwaitMethod.awaitUntil); } |
646 |
public void testAwait_Timeout(AwaitMethod awaitMethod) { |
647 |
final Mutex sync = new Mutex(); |
648 |
final ConditionObject c = sync.newCondition(); |
649 |
sync.acquire(); |
650 |
assertAwaitTimesOut(c, awaitMethod); |
651 |
sync.release(); |
652 |
} |
653 |
|
654 |
/** |
655 |
* await/awaitNanos/awaitUntil returns when signalled |
656 |
*/ |
657 |
public void testSignal_await() { testSignal(AwaitMethod.await); } |
658 |
public void testSignal_awaitTimed() { testSignal(AwaitMethod.awaitTimed); } |
659 |
public void testSignal_awaitNanos() { testSignal(AwaitMethod.awaitNanos); } |
660 |
public void testSignal_awaitUntil() { testSignal(AwaitMethod.awaitUntil); } |
661 |
public void testSignal(final AwaitMethod awaitMethod) { |
662 |
final Mutex sync = new Mutex(); |
663 |
final ConditionObject c = sync.newCondition(); |
664 |
final BooleanLatch acquired = new BooleanLatch(); |
665 |
Thread t = newStartedThread(new CheckedRunnable() { |
666 |
public void realRun() throws InterruptedException { |
667 |
sync.acquire(); |
668 |
assertTrue(acquired.releaseShared(0)); |
669 |
await(c, awaitMethod); |
670 |
sync.release(); |
671 |
}}); |
672 |
|
673 |
acquired.acquireShared(0); |
674 |
sync.acquire(); |
675 |
assertHasWaitersLocked(sync, c, t); |
676 |
assertHasExclusiveQueuedThreads(sync, NO_THREADS); |
677 |
c.signal(); |
678 |
assertHasWaitersLocked(sync, c, NO_THREADS); |
679 |
assertHasExclusiveQueuedThreads(sync, t); |
680 |
sync.release(); |
681 |
awaitTermination(t); |
682 |
} |
683 |
|
684 |
/** |
685 |
* hasWaiters(null) throws NullPointerException |
686 |
*/ |
687 |
public void testHasWaitersNPE() { |
688 |
final Mutex sync = new Mutex(); |
689 |
try { |
690 |
sync.hasWaiters(null); |
691 |
shouldThrow(); |
692 |
} catch (NullPointerException success) {} |
693 |
} |
694 |
|
695 |
/** |
696 |
* getWaitQueueLength(null) throws NullPointerException |
697 |
*/ |
698 |
public void testGetWaitQueueLengthNPE() { |
699 |
final Mutex sync = new Mutex(); |
700 |
try { |
701 |
sync.getWaitQueueLength(null); |
702 |
shouldThrow(); |
703 |
} catch (NullPointerException success) {} |
704 |
} |
705 |
|
706 |
/** |
707 |
* getWaitingThreads(null) throws NullPointerException |
708 |
*/ |
709 |
public void testGetWaitingThreadsNPE() { |
710 |
final Mutex sync = new Mutex(); |
711 |
try { |
712 |
sync.getWaitingThreads(null); |
713 |
shouldThrow(); |
714 |
} catch (NullPointerException success) {} |
715 |
} |
716 |
|
717 |
/** |
718 |
* hasWaiters throws IllegalArgumentException if not owned |
719 |
*/ |
720 |
public void testHasWaitersIAE() { |
721 |
final Mutex sync = new Mutex(); |
722 |
final ConditionObject c = sync.newCondition(); |
723 |
final Mutex sync2 = new Mutex(); |
724 |
try { |
725 |
sync2.hasWaiters(c); |
726 |
shouldThrow(); |
727 |
} catch (IllegalArgumentException success) {} |
728 |
assertHasWaitersUnlocked(sync, c, NO_THREADS); |
729 |
} |
730 |
|
731 |
/** |
732 |
* hasWaiters throws IllegalMonitorStateException if not synced |
733 |
*/ |
734 |
public void testHasWaitersIMSE() { |
735 |
final Mutex sync = new Mutex(); |
736 |
final ConditionObject c = sync.newCondition(); |
737 |
try { |
738 |
sync.hasWaiters(c); |
739 |
shouldThrow(); |
740 |
} catch (IllegalMonitorStateException success) {} |
741 |
assertHasWaitersUnlocked(sync, c, NO_THREADS); |
742 |
} |
743 |
|
744 |
/** |
745 |
* getWaitQueueLength throws IllegalArgumentException if not owned |
746 |
*/ |
747 |
public void testGetWaitQueueLengthIAE() { |
748 |
final Mutex sync = new Mutex(); |
749 |
final ConditionObject c = sync.newCondition(); |
750 |
final Mutex sync2 = new Mutex(); |
751 |
try { |
752 |
sync2.getWaitQueueLength(c); |
753 |
shouldThrow(); |
754 |
} catch (IllegalArgumentException success) {} |
755 |
assertHasWaitersUnlocked(sync, c, NO_THREADS); |
756 |
} |
757 |
|
758 |
/** |
759 |
* getWaitQueueLength throws IllegalMonitorStateException if not synced |
760 |
*/ |
761 |
public void testGetWaitQueueLengthIMSE() { |
762 |
final Mutex sync = new Mutex(); |
763 |
final ConditionObject c = sync.newCondition(); |
764 |
try { |
765 |
sync.getWaitQueueLength(c); |
766 |
shouldThrow(); |
767 |
} catch (IllegalMonitorStateException success) {} |
768 |
assertHasWaitersUnlocked(sync, c, NO_THREADS); |
769 |
} |
770 |
|
771 |
/** |
772 |
* getWaitingThreads throws IllegalArgumentException if not owned |
773 |
*/ |
774 |
public void testGetWaitingThreadsIAE() { |
775 |
final Mutex sync = new Mutex(); |
776 |
final ConditionObject c = sync.newCondition(); |
777 |
final Mutex sync2 = new Mutex(); |
778 |
try { |
779 |
sync2.getWaitingThreads(c); |
780 |
shouldThrow(); |
781 |
} catch (IllegalArgumentException success) {} |
782 |
assertHasWaitersUnlocked(sync, c, NO_THREADS); |
783 |
} |
784 |
|
785 |
/** |
786 |
* getWaitingThreads throws IllegalMonitorStateException if not synced |
787 |
*/ |
788 |
public void testGetWaitingThreadsIMSE() { |
789 |
final Mutex sync = new Mutex(); |
790 |
final ConditionObject c = sync.newCondition(); |
791 |
try { |
792 |
sync.getWaitingThreads(c); |
793 |
shouldThrow(); |
794 |
} catch (IllegalMonitorStateException success) {} |
795 |
assertHasWaitersUnlocked(sync, c, NO_THREADS); |
796 |
} |
797 |
|
798 |
/** |
799 |
* hasWaiters returns true when a thread is waiting, else false |
800 |
*/ |
801 |
public void testHasWaiters() { |
802 |
final Mutex sync = new Mutex(); |
803 |
final ConditionObject c = sync.newCondition(); |
804 |
final BooleanLatch acquired = new BooleanLatch(); |
805 |
Thread t = newStartedThread(new CheckedRunnable() { |
806 |
public void realRun() throws InterruptedException { |
807 |
sync.acquire(); |
808 |
assertHasWaitersLocked(sync, c, NO_THREADS); |
809 |
assertFalse(sync.hasWaiters(c)); |
810 |
assertTrue(acquired.releaseShared(0)); |
811 |
c.await(); |
812 |
sync.release(); |
813 |
}}); |
814 |
|
815 |
acquired.acquireShared(0); |
816 |
sync.acquire(); |
817 |
assertHasWaitersLocked(sync, c, t); |
818 |
assertHasExclusiveQueuedThreads(sync, NO_THREADS); |
819 |
assertTrue(sync.hasWaiters(c)); |
820 |
c.signal(); |
821 |
assertHasWaitersLocked(sync, c, NO_THREADS); |
822 |
assertHasExclusiveQueuedThreads(sync, t); |
823 |
assertFalse(sync.hasWaiters(c)); |
824 |
sync.release(); |
825 |
|
826 |
awaitTermination(t); |
827 |
assertHasWaitersUnlocked(sync, c, NO_THREADS); |
828 |
} |
829 |
|
830 |
/** |
831 |
* getWaitQueueLength returns number of waiting threads |
832 |
*/ |
833 |
public void testGetWaitQueueLength() { |
834 |
final Mutex sync = new Mutex(); |
835 |
final ConditionObject c = sync.newCondition(); |
836 |
final BooleanLatch acquired1 = new BooleanLatch(); |
837 |
final BooleanLatch acquired2 = new BooleanLatch(); |
838 |
final Thread t1 = newStartedThread(new CheckedRunnable() { |
839 |
public void realRun() throws InterruptedException { |
840 |
sync.acquire(); |
841 |
assertHasWaitersLocked(sync, c, NO_THREADS); |
842 |
assertEquals(0, sync.getWaitQueueLength(c)); |
843 |
assertTrue(acquired1.releaseShared(0)); |
844 |
c.await(); |
845 |
sync.release(); |
846 |
}}); |
847 |
acquired1.acquireShared(0); |
848 |
sync.acquire(); |
849 |
assertHasWaitersLocked(sync, c, t1); |
850 |
assertEquals(1, sync.getWaitQueueLength(c)); |
851 |
sync.release(); |
852 |
|
853 |
final Thread t2 = newStartedThread(new CheckedRunnable() { |
854 |
public void realRun() throws InterruptedException { |
855 |
sync.acquire(); |
856 |
assertHasWaitersLocked(sync, c, t1); |
857 |
assertEquals(1, sync.getWaitQueueLength(c)); |
858 |
assertTrue(acquired2.releaseShared(0)); |
859 |
c.await(); |
860 |
sync.release(); |
861 |
}}); |
862 |
acquired2.acquireShared(0); |
863 |
sync.acquire(); |
864 |
assertHasWaitersLocked(sync, c, t1, t2); |
865 |
assertHasExclusiveQueuedThreads(sync, NO_THREADS); |
866 |
assertEquals(2, sync.getWaitQueueLength(c)); |
867 |
c.signalAll(); |
868 |
assertHasWaitersLocked(sync, c, NO_THREADS); |
869 |
assertHasExclusiveQueuedThreads(sync, t1, t2); |
870 |
assertEquals(0, sync.getWaitQueueLength(c)); |
871 |
sync.release(); |
872 |
|
873 |
awaitTermination(t1); |
874 |
awaitTermination(t2); |
875 |
assertHasWaitersUnlocked(sync, c, NO_THREADS); |
876 |
} |
877 |
|
878 |
/** |
879 |
* getWaitingThreads returns only and all waiting threads |
880 |
*/ |
881 |
public void testGetWaitingThreads() { |
882 |
final Mutex sync = new Mutex(); |
883 |
final ConditionObject c = sync.newCondition(); |
884 |
final BooleanLatch acquired1 = new BooleanLatch(); |
885 |
final BooleanLatch acquired2 = new BooleanLatch(); |
886 |
final Thread t1 = new Thread(new CheckedRunnable() { |
887 |
public void realRun() throws InterruptedException { |
888 |
sync.acquire(); |
889 |
assertHasWaitersLocked(sync, c, NO_THREADS); |
890 |
assertTrue(sync.getWaitingThreads(c).isEmpty()); |
891 |
assertTrue(acquired1.releaseShared(0)); |
892 |
c.await(); |
893 |
sync.release(); |
894 |
}}); |
895 |
|
896 |
final Thread t2 = new Thread(new CheckedRunnable() { |
897 |
public void realRun() throws InterruptedException { |
898 |
sync.acquire(); |
899 |
assertHasWaitersLocked(sync, c, t1); |
900 |
assertTrue(sync.getWaitingThreads(c).contains(t1)); |
901 |
assertFalse(sync.getWaitingThreads(c).isEmpty()); |
902 |
assertEquals(1, sync.getWaitingThreads(c).size()); |
903 |
assertTrue(acquired2.releaseShared(0)); |
904 |
c.await(); |
905 |
sync.release(); |
906 |
}}); |
907 |
|
908 |
sync.acquire(); |
909 |
assertHasWaitersLocked(sync, c, NO_THREADS); |
910 |
assertFalse(sync.getWaitingThreads(c).contains(t1)); |
911 |
assertFalse(sync.getWaitingThreads(c).contains(t2)); |
912 |
assertTrue(sync.getWaitingThreads(c).isEmpty()); |
913 |
assertEquals(0, sync.getWaitingThreads(c).size()); |
914 |
sync.release(); |
915 |
|
916 |
t1.start(); |
917 |
acquired1.acquireShared(0); |
918 |
sync.acquire(); |
919 |
assertHasWaitersLocked(sync, c, t1); |
920 |
assertTrue(sync.getWaitingThreads(c).contains(t1)); |
921 |
assertFalse(sync.getWaitingThreads(c).contains(t2)); |
922 |
assertFalse(sync.getWaitingThreads(c).isEmpty()); |
923 |
assertEquals(1, sync.getWaitingThreads(c).size()); |
924 |
sync.release(); |
925 |
|
926 |
t2.start(); |
927 |
acquired2.acquireShared(0); |
928 |
sync.acquire(); |
929 |
assertHasWaitersLocked(sync, c, t1, t2); |
930 |
assertHasExclusiveQueuedThreads(sync, NO_THREADS); |
931 |
assertTrue(sync.getWaitingThreads(c).contains(t1)); |
932 |
assertTrue(sync.getWaitingThreads(c).contains(t2)); |
933 |
assertFalse(sync.getWaitingThreads(c).isEmpty()); |
934 |
assertEquals(2, sync.getWaitingThreads(c).size()); |
935 |
c.signalAll(); |
936 |
assertHasWaitersLocked(sync, c, NO_THREADS); |
937 |
assertHasExclusiveQueuedThreads(sync, t1, t2); |
938 |
assertFalse(sync.getWaitingThreads(c).contains(t1)); |
939 |
assertFalse(sync.getWaitingThreads(c).contains(t2)); |
940 |
assertTrue(sync.getWaitingThreads(c).isEmpty()); |
941 |
assertEquals(0, sync.getWaitingThreads(c).size()); |
942 |
sync.release(); |
943 |
|
944 |
awaitTermination(t1); |
945 |
awaitTermination(t2); |
946 |
assertHasWaitersUnlocked(sync, c, NO_THREADS); |
947 |
} |
948 |
|
949 |
/** |
950 |
* awaitUninterruptibly doesn't abort on interrupt |
951 |
*/ |
952 |
public void testAwaitUninterruptibly() { |
953 |
final Mutex sync = new Mutex(); |
954 |
final ConditionObject c = sync.newCondition(); |
955 |
final BooleanLatch acquired = new BooleanLatch(); |
956 |
Thread t = newStartedThread(new CheckedRunnable() { |
957 |
public void realRun() { |
958 |
sync.acquire(); |
959 |
assertTrue(acquired.releaseShared(0)); |
960 |
c.awaitUninterruptibly(); |
961 |
assertTrue(Thread.interrupted()); |
962 |
assertHasWaitersLocked(sync, c, NO_THREADS); |
963 |
sync.release(); |
964 |
}}); |
965 |
|
966 |
acquired.acquireShared(0); |
967 |
sync.acquire(); |
968 |
assertHasWaitersLocked(sync, c, t); |
969 |
sync.release(); |
970 |
t.interrupt(); |
971 |
assertHasWaitersUnlocked(sync, c, t); |
972 |
assertThreadStaysAlive(t); |
973 |
sync.acquire(); |
974 |
assertHasWaitersLocked(sync, c, t); |
975 |
assertHasExclusiveQueuedThreads(sync, NO_THREADS); |
976 |
c.signal(); |
977 |
assertHasWaitersLocked(sync, c, NO_THREADS); |
978 |
assertHasExclusiveQueuedThreads(sync, t); |
979 |
sync.release(); |
980 |
awaitTermination(t); |
981 |
} |
982 |
|
983 |
/** |
984 |
* await/awaitNanos/awaitUntil is interruptible |
985 |
*/ |
986 |
public void testInterruptible_await() { testInterruptible(AwaitMethod.await); } |
987 |
public void testInterruptible_awaitTimed() { testInterruptible(AwaitMethod.awaitTimed); } |
988 |
public void testInterruptible_awaitNanos() { testInterruptible(AwaitMethod.awaitNanos); } |
989 |
public void testInterruptible_awaitUntil() { testInterruptible(AwaitMethod.awaitUntil); } |
990 |
public void testInterruptible(final AwaitMethod awaitMethod) { |
991 |
final Mutex sync = new Mutex(); |
992 |
final ConditionObject c = sync.newCondition(); |
993 |
final BooleanLatch acquired = new BooleanLatch(); |
994 |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
995 |
public void realRun() throws InterruptedException { |
996 |
sync.acquire(); |
997 |
assertTrue(acquired.releaseShared(0)); |
998 |
await(c, awaitMethod); |
999 |
}}); |
1000 |
|
1001 |
acquired.acquireShared(0); |
1002 |
t.interrupt(); |
1003 |
awaitTermination(t); |
1004 |
} |
1005 |
|
1006 |
/** |
1007 |
* signalAll wakes up all threads |
1008 |
*/ |
1009 |
public void testSignalAll_await() { testSignalAll(AwaitMethod.await); } |
1010 |
public void testSignalAll_awaitTimed() { testSignalAll(AwaitMethod.awaitTimed); } |
1011 |
public void testSignalAll_awaitNanos() { testSignalAll(AwaitMethod.awaitNanos); } |
1012 |
public void testSignalAll_awaitUntil() { testSignalAll(AwaitMethod.awaitUntil); } |
1013 |
public void testSignalAll(final AwaitMethod awaitMethod) { |
1014 |
final Mutex sync = new Mutex(); |
1015 |
final ConditionObject c = sync.newCondition(); |
1016 |
final BooleanLatch acquired1 = new BooleanLatch(); |
1017 |
final BooleanLatch acquired2 = new BooleanLatch(); |
1018 |
Thread t1 = newStartedThread(new CheckedRunnable() { |
1019 |
public void realRun() throws InterruptedException { |
1020 |
sync.acquire(); |
1021 |
acquired1.releaseShared(0); |
1022 |
await(c, awaitMethod); |
1023 |
sync.release(); |
1024 |
}}); |
1025 |
|
1026 |
Thread t2 = newStartedThread(new CheckedRunnable() { |
1027 |
public void realRun() throws InterruptedException { |
1028 |
sync.acquire(); |
1029 |
acquired2.releaseShared(0); |
1030 |
await(c, awaitMethod); |
1031 |
sync.release(); |
1032 |
}}); |
1033 |
|
1034 |
acquired1.acquireShared(0); |
1035 |
acquired2.acquireShared(0); |
1036 |
sync.acquire(); |
1037 |
assertHasWaitersLocked(sync, c, t1, t2); |
1038 |
assertHasExclusiveQueuedThreads(sync, NO_THREADS); |
1039 |
c.signalAll(); |
1040 |
assertHasWaitersLocked(sync, c, NO_THREADS); |
1041 |
assertHasExclusiveQueuedThreads(sync, t1, t2); |
1042 |
sync.release(); |
1043 |
awaitTermination(t1); |
1044 |
awaitTermination(t2); |
1045 |
} |
1046 |
|
1047 |
/** |
1048 |
* toString indicates current state |
1049 |
*/ |
1050 |
public void testToString() { |
1051 |
Mutex sync = new Mutex(); |
1052 |
assertTrue(sync.toString().contains("State = " + Mutex.UNLOCKED)); |
1053 |
sync.acquire(); |
1054 |
assertTrue(sync.toString().contains("State = " + Mutex.LOCKED)); |
1055 |
} |
1056 |
|
1057 |
/** |
1058 |
* A serialized AQS deserializes with current state, but no queued threads |
1059 |
*/ |
1060 |
public void testSerialization() { |
1061 |
Mutex sync = new Mutex(); |
1062 |
assertFalse(serialClone(sync).isHeldExclusively()); |
1063 |
sync.acquire(); |
1064 |
Thread t = newStartedThread(new InterruptedSyncRunnable(sync)); |
1065 |
waitForQueuedThread(sync, t); |
1066 |
assertTrue(sync.isHeldExclusively()); |
1067 |
|
1068 |
Mutex clone = serialClone(sync); |
1069 |
assertTrue(clone.isHeldExclusively()); |
1070 |
assertHasExclusiveQueuedThreads(sync, t); |
1071 |
assertHasExclusiveQueuedThreads(clone, NO_THREADS); |
1072 |
t.interrupt(); |
1073 |
awaitTermination(t); |
1074 |
sync.release(); |
1075 |
assertFalse(sync.isHeldExclusively()); |
1076 |
assertTrue(clone.isHeldExclusively()); |
1077 |
assertHasExclusiveQueuedThreads(sync, NO_THREADS); |
1078 |
assertHasExclusiveQueuedThreads(clone, NO_THREADS); |
1079 |
} |
1080 |
|
1081 |
/** |
1082 |
* tryReleaseShared setting state changes getState |
1083 |
*/ |
1084 |
public void testGetStateWithReleaseShared() { |
1085 |
final BooleanLatch l = new BooleanLatch(); |
1086 |
assertFalse(l.isSignalled()); |
1087 |
assertTrue(l.releaseShared(0)); |
1088 |
assertTrue(l.isSignalled()); |
1089 |
} |
1090 |
|
1091 |
/** |
1092 |
* releaseShared has no effect when already signalled |
1093 |
*/ |
1094 |
public void testReleaseShared() { |
1095 |
final BooleanLatch l = new BooleanLatch(); |
1096 |
assertFalse(l.isSignalled()); |
1097 |
assertTrue(l.releaseShared(0)); |
1098 |
assertTrue(l.isSignalled()); |
1099 |
assertTrue(l.releaseShared(0)); |
1100 |
assertTrue(l.isSignalled()); |
1101 |
} |
1102 |
|
1103 |
/** |
1104 |
* acquireSharedInterruptibly returns after release, but not before |
1105 |
*/ |
1106 |
public void testAcquireSharedInterruptibly() { |
1107 |
final BooleanLatch l = new BooleanLatch(); |
1108 |
|
1109 |
Thread t = newStartedThread(new CheckedRunnable() { |
1110 |
public void realRun() throws InterruptedException { |
1111 |
assertFalse(l.isSignalled()); |
1112 |
l.acquireSharedInterruptibly(0); |
1113 |
assertTrue(l.isSignalled()); |
1114 |
l.acquireSharedInterruptibly(0); |
1115 |
assertTrue(l.isSignalled()); |
1116 |
}}); |
1117 |
|
1118 |
waitForQueuedThread(l, t); |
1119 |
assertFalse(l.isSignalled()); |
1120 |
assertThreadStaysAlive(t); |
1121 |
assertHasSharedQueuedThreads(l, t); |
1122 |
assertTrue(l.releaseShared(0)); |
1123 |
assertTrue(l.isSignalled()); |
1124 |
awaitTermination(t); |
1125 |
} |
1126 |
|
1127 |
/** |
1128 |
* tryAcquireSharedNanos returns after release, but not before |
1129 |
*/ |
1130 |
public void testTryAcquireSharedNanos() { |
1131 |
final BooleanLatch l = new BooleanLatch(); |
1132 |
|
1133 |
Thread t = newStartedThread(new CheckedRunnable() { |
1134 |
public void realRun() throws InterruptedException { |
1135 |
assertFalse(l.isSignalled()); |
1136 |
long nanos = MILLISECONDS.toNanos(2 * LONG_DELAY_MS); |
1137 |
assertTrue(l.tryAcquireSharedNanos(0, nanos)); |
1138 |
assertTrue(l.isSignalled()); |
1139 |
assertTrue(l.tryAcquireSharedNanos(0, nanos)); |
1140 |
assertTrue(l.isSignalled()); |
1141 |
}}); |
1142 |
|
1143 |
waitForQueuedThread(l, t); |
1144 |
assertFalse(l.isSignalled()); |
1145 |
assertThreadStaysAlive(t); |
1146 |
assertTrue(l.releaseShared(0)); |
1147 |
assertTrue(l.isSignalled()); |
1148 |
awaitTermination(t); |
1149 |
} |
1150 |
|
1151 |
/** |
1152 |
* acquireSharedInterruptibly is interruptible |
1153 |
*/ |
1154 |
public void testAcquireSharedInterruptibly_Interruptible() { |
1155 |
final BooleanLatch l = new BooleanLatch(); |
1156 |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
1157 |
public void realRun() throws InterruptedException { |
1158 |
assertFalse(l.isSignalled()); |
1159 |
l.acquireSharedInterruptibly(0); |
1160 |
}}); |
1161 |
|
1162 |
waitForQueuedThread(l, t); |
1163 |
assertFalse(l.isSignalled()); |
1164 |
t.interrupt(); |
1165 |
awaitTermination(t); |
1166 |
assertFalse(l.isSignalled()); |
1167 |
} |
1168 |
|
1169 |
/** |
1170 |
* tryAcquireSharedNanos is interruptible |
1171 |
*/ |
1172 |
public void testTryAcquireSharedNanos_Interruptible() { |
1173 |
final BooleanLatch l = new BooleanLatch(); |
1174 |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
1175 |
public void realRun() throws InterruptedException { |
1176 |
assertFalse(l.isSignalled()); |
1177 |
long nanos = MILLISECONDS.toNanos(2 * LONG_DELAY_MS); |
1178 |
l.tryAcquireSharedNanos(0, nanos); |
1179 |
}}); |
1180 |
|
1181 |
waitForQueuedThread(l, t); |
1182 |
assertFalse(l.isSignalled()); |
1183 |
t.interrupt(); |
1184 |
awaitTermination(t); |
1185 |
assertFalse(l.isSignalled()); |
1186 |
} |
1187 |
|
1188 |
/** |
1189 |
* tryAcquireSharedNanos times out if not released before timeout |
1190 |
*/ |
1191 |
public void testTryAcquireSharedNanos_Timeout() { |
1192 |
final BooleanLatch l = new BooleanLatch(); |
1193 |
Thread t = newStartedThread(new CheckedRunnable() { |
1194 |
public void realRun() throws InterruptedException { |
1195 |
assertFalse(l.isSignalled()); |
1196 |
long startTime = System.nanoTime(); |
1197 |
long nanos = MILLISECONDS.toNanos(timeoutMillis()); |
1198 |
assertFalse(l.tryAcquireSharedNanos(0, nanos)); |
1199 |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
1200 |
assertFalse(l.isSignalled()); |
1201 |
}}); |
1202 |
|
1203 |
waitForQueuedThread(l, t); |
1204 |
assertFalse(l.isSignalled()); |
1205 |
awaitTermination(t); |
1206 |
assertFalse(l.isSignalled()); |
1207 |
} |
1208 |
|
1209 |
} |