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/* |
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* Written by members of JCP JSR-166 Expert Group and released to the |
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* public domain. Use, modify, and redistribute this code in any way |
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* without acknowledgement. Other contributors include Andrew Wright, |
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* Jeffrey Hayes, Pat Fischer, Mike Judd. |
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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 junit.framework.*; |
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import java.util.concurrent.locks.*; |
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import java.util.concurrent.*; |
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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import java.io.*; |
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import java.util.*; |
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public class ReentrantReadWriteLockTest 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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junit.textui.TestRunner.run(suite()); |
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} |
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public static Test suite() { |
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return new TestSuite(ReentrantReadWriteLockTest.class); |
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return new TestSuite(ReentrantReadWriteLockTest.class); |
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} |
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|
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/** |
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* A runnable calling lockInterruptibly |
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*/ |
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class InterruptibleLockRunnable implements Runnable { |
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class InterruptibleLockRunnable extends CheckedRunnable { |
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final ReentrantReadWriteLock lock; |
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InterruptibleLockRunnable(ReentrantReadWriteLock l) { lock = l; } |
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public void run() { |
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try { |
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lock.writeLock().lockInterruptibly(); |
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} catch(InterruptedException success){} |
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public void realRun() throws InterruptedException { |
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lock.writeLock().lockInterruptibly(); |
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} |
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} |
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* A runnable calling lockInterruptibly that expects to be |
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* interrupted |
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*/ |
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class InterruptedLockRunnable implements Runnable { |
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class InterruptedLockRunnable extends CheckedInterruptedRunnable { |
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final ReentrantReadWriteLock lock; |
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InterruptedLockRunnable(ReentrantReadWriteLock l) { lock = l; } |
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public void run() { |
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try { |
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lock.writeLock().lockInterruptibly(); |
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threadShouldThrow(); |
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} catch(InterruptedException success){} |
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public void realRun() throws InterruptedException { |
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lock.writeLock().lockInterruptibly(); |
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} |
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} |
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|
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*/ |
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static class PublicReentrantReadWriteLock extends ReentrantReadWriteLock { |
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PublicReentrantReadWriteLock() { super(); } |
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public Collection<Thread> getQueuedThreads() { |
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return super.getQueuedThreads(); |
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public Collection<Thread> getQueuedThreads() { |
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return super.getQueuedThreads(); |
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} |
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public PublicCondition newCondition() { |
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return new PublicCondition(this); |
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public Collection<Thread> getWaitingThreads(Condition c) { |
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return super.getWaitingThreads(c); |
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} |
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|
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static class PublicCondition extends AbstractReentrantLock.ConditionObject { |
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PublicCondition(PublicReentrantReadWriteLock l) { super(l); } |
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public Collection<Thread> getWaitingThreads() { |
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return super.getWaitingThreads(); |
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} |
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} |
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|
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} |
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|
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/** |
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* Constructor sets given fairness, and is in unlocked state |
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*/ |
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public void testConstructor() { |
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ReentrantReadWriteLock rl = new ReentrantReadWriteLock(); |
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public void testConstructor() { |
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ReentrantReadWriteLock rl = new ReentrantReadWriteLock(); |
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assertFalse(rl.isFair()); |
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assertFalse(rl.isWriteLocked()); |
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assertEquals(0, rl.getReadLocks()); |
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ReentrantReadWriteLock r2 = new ReentrantReadWriteLock(true); |
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assertEquals(0, rl.getReadLockCount()); |
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ReentrantReadWriteLock r2 = new ReentrantReadWriteLock(true); |
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assertTrue(r2.isFair()); |
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assertFalse(r2.isWriteLocked()); |
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assertEquals(0, r2.getReadLocks()); |
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assertEquals(0, r2.getReadLockCount()); |
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ReentrantReadWriteLock r3 = new ReentrantReadWriteLock(false); |
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assertFalse(r3.isFair()); |
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assertFalse(r3.isWriteLocked()); |
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assertEquals(0, r3.getReadLockCount()); |
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} |
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|
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/** |
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* write-locking and read-locking an unlocked lock succeed |
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*/ |
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public void testLock() { |
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ReentrantReadWriteLock rl = new ReentrantReadWriteLock(); |
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public void testLock() { |
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ReentrantReadWriteLock rl = new ReentrantReadWriteLock(); |
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rl.writeLock().lock(); |
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assertTrue(rl.isWriteLocked()); |
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assertTrue(rl.isWriteLockedByCurrentThread()); |
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assertEquals(0, rl.getReadLocks()); |
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assertTrue(rl.writeLock().isHeldByCurrentThread()); |
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assertEquals(0, rl.getReadLockCount()); |
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rl.writeLock().unlock(); |
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assertFalse(rl.isWriteLocked()); |
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assertFalse(rl.isWriteLockedByCurrentThread()); |
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assertEquals(0, rl.getReadLocks()); |
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assertFalse(rl.writeLock().isHeldByCurrentThread()); |
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assertEquals(0, rl.getReadLockCount()); |
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rl.readLock().lock(); |
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assertFalse(rl.isWriteLocked()); |
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assertFalse(rl.isWriteLockedByCurrentThread()); |
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assertEquals(1, rl.getReadLocks()); |
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assertEquals(1, rl.getReadLockCount()); |
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rl.readLock().unlock(); |
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assertFalse(rl.isWriteLocked()); |
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assertFalse(rl.isWriteLockedByCurrentThread()); |
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assertEquals(0, rl.getReadLocks()); |
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assertEquals(0, rl.getReadLockCount()); |
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} |
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/** |
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* locking an unlocked fair lock succeeds |
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*/ |
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public void testFairLock() { |
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ReentrantReadWriteLock rl = new ReentrantReadWriteLock(true); |
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public void testFairLock() { |
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ReentrantReadWriteLock rl = new ReentrantReadWriteLock(true); |
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rl.writeLock().lock(); |
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assertTrue(rl.isWriteLocked()); |
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assertTrue(rl.isWriteLockedByCurrentThread()); |
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assertEquals(0, rl.getReadLocks()); |
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assertTrue(rl.writeLock().isHeldByCurrentThread()); |
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assertEquals(0, rl.getReadLockCount()); |
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rl.writeLock().unlock(); |
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assertFalse(rl.isWriteLocked()); |
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assertFalse(rl.isWriteLockedByCurrentThread()); |
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assertEquals(0, rl.getReadLocks()); |
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assertFalse(rl.writeLock().isHeldByCurrentThread()); |
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assertEquals(0, rl.getReadLockCount()); |
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rl.readLock().lock(); |
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assertFalse(rl.isWriteLocked()); |
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assertFalse(rl.isWriteLockedByCurrentThread()); |
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assertEquals(1, rl.getReadLocks()); |
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assertEquals(1, rl.getReadLockCount()); |
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rl.readLock().unlock(); |
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assertFalse(rl.isWriteLocked()); |
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assertFalse(rl.isWriteLockedByCurrentThread()); |
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assertEquals(0, rl.getReadLocks()); |
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assertEquals(0, rl.getReadLockCount()); |
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} |
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|
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/** |
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* getWriteHoldCount returns number of recursive holds |
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*/ |
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public void testGetHoldCount() { |
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ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
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for(int i = 1; i <= SIZE; i++) { |
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lock.writeLock().lock(); |
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assertEquals(i,lock.getWriteHoldCount()); |
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} |
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for(int i = SIZE; i > 0; i--) { |
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lock.writeLock().unlock(); |
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assertEquals(i-1,lock.getWriteHoldCount()); |
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} |
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} |
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|
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|
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/** |
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* write-unlocking an unlocked lock throws IllegalMonitorStateException |
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*/ |
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public void testUnlock_IllegalMonitorStateException() { |
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ReentrantReadWriteLock rl = new ReentrantReadWriteLock(); |
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try { |
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rl.writeLock().unlock(); |
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shouldThrow(); |
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} catch(IllegalMonitorStateException success){} |
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} |
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|
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|
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/** |
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* write-lockInterruptibly is interruptible |
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*/ |
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public void testWriteLockInterruptibly_Interrupted() { |
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final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
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lock.writeLock().lock(); |
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Thread t = new Thread(new Runnable() { |
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public void run() { |
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try { |
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lock.writeLock().lockInterruptibly(); |
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threadShouldThrow(); |
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} catch(InterruptedException success){} |
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} |
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}); |
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try { |
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t.start(); |
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t.interrupt(); |
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public void testGetWriteHoldCount() { |
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ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
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for (int i = 1; i <= SIZE; i++) { |
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lock.writeLock().lock(); |
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assertEquals(i,lock.getWriteHoldCount()); |
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} |
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for (int i = SIZE; i > 0; i--) { |
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lock.writeLock().unlock(); |
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t.join(); |
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} catch(Exception e){ |
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unexpectedException(); |
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assertEquals(i-1,lock.getWriteHoldCount()); |
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} |
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} |
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} |
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|
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/** |
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* timed write-trylock is interruptible |
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* WriteLock.getHoldCount returns number of recursive holds |
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*/ |
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public void testWriteTryLock_Interrupted() { |
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final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
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lock.writeLock().lock(); |
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Thread t = new Thread(new Runnable() { |
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public void run() { |
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try { |
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lock.writeLock().tryLock(1000,TimeUnit.MILLISECONDS); |
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threadShouldThrow(); |
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} catch(InterruptedException success){} |
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} |
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}); |
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try { |
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t.start(); |
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t.interrupt(); |
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public void testGetHoldCount() { |
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ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
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for (int i = 1; i <= SIZE; i++) { |
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lock.writeLock().lock(); |
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assertEquals(i,lock.writeLock().getHoldCount()); |
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} |
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for (int i = SIZE; i > 0; i--) { |
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lock.writeLock().unlock(); |
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t.join(); |
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} catch(Exception e){ |
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unexpectedException(); |
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assertEquals(i-1,lock.writeLock().getHoldCount()); |
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} |
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} |
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|
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/** |
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* read-lockInterruptibly is interruptible |
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* getReadHoldCount returns number of recursive holds |
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*/ |
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public void testReadLockInterruptibly_Interrupted() { |
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final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
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lock.writeLock().lock(); |
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Thread t = new Thread(new Runnable() { |
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public void run() { |
168 |
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try { |
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lock.readLock().lockInterruptibly(); |
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threadShouldThrow(); |
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} catch(InterruptedException success){} |
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} |
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}); |
223 |
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try { |
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t.start(); |
225 |
< |
t.interrupt(); |
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< |
lock.writeLock().unlock(); |
227 |
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t.join(); |
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} catch(Exception e){ |
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unexpectedException(); |
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> |
public void testGetReadHoldCount() { |
164 |
> |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
165 |
> |
for (int i = 1; i <= SIZE; i++) { |
166 |
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lock.readLock().lock(); |
167 |
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assertEquals(i,lock.getReadHoldCount()); |
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} |
169 |
> |
for (int i = SIZE; i > 0; i--) { |
170 |
> |
lock.readLock().unlock(); |
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assertEquals(i-1,lock.getReadHoldCount()); |
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} |
173 |
< |
} |
173 |
> |
} |
174 |
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|
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|
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/** |
177 |
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* timed read-trylock is interruptible |
177 |
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* write-unlocking an unlocked lock throws IllegalMonitorStateException |
178 |
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*/ |
179 |
< |
public void testReadTryLock_Interrupted() { |
180 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
238 |
< |
lock.writeLock().lock(); |
239 |
< |
Thread t = new Thread(new Runnable() { |
240 |
< |
public void run() { |
241 |
< |
try { |
242 |
< |
lock.readLock().tryLock(1000,TimeUnit.MILLISECONDS); |
243 |
< |
threadShouldThrow(); |
244 |
< |
} catch(InterruptedException success){} |
245 |
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} |
246 |
< |
}); |
179 |
> |
public void testUnlock_IllegalMonitorStateException() { |
180 |
> |
ReentrantReadWriteLock rl = new ReentrantReadWriteLock(); |
181 |
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try { |
182 |
< |
t.start(); |
183 |
< |
t.interrupt(); |
184 |
< |
t.join(); |
251 |
< |
} catch(Exception e){ |
252 |
< |
unexpectedException(); |
253 |
< |
} |
182 |
> |
rl.writeLock().unlock(); |
183 |
> |
shouldThrow(); |
184 |
> |
} catch (IllegalMonitorStateException success) {} |
185 |
|
} |
186 |
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|
187 |
< |
|
187 |
> |
|
188 |
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/** |
189 |
< |
* write-trylock fails if locked |
189 |
> |
* write-lockInterruptibly is interruptible |
190 |
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*/ |
191 |
< |
public void testWriteTryLockWhenLocked() { |
192 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
193 |
< |
lock.writeLock().lock(); |
194 |
< |
Thread t = new Thread(new Runnable() { |
195 |
< |
public void run() { |
196 |
< |
threadAssertFalse(lock.writeLock().tryLock()); |
197 |
< |
} |
198 |
< |
}); |
199 |
< |
try { |
200 |
< |
t.start(); |
201 |
< |
t.join(); |
202 |
< |
lock.writeLock().unlock(); |
203 |
< |
} catch(Exception e){ |
204 |
< |
unexpectedException(); |
205 |
< |
} |
206 |
< |
} |
191 |
> |
public void testWriteLockInterruptibly_Interrupted() throws Exception { |
192 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
193 |
> |
lock.writeLock().lock(); |
194 |
> |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
195 |
> |
public void realRun() throws InterruptedException { |
196 |
> |
lock.writeLock().lockInterruptibly(); |
197 |
> |
lock.writeLock().unlock(); |
198 |
> |
lock.writeLock().lockInterruptibly(); |
199 |
> |
lock.writeLock().unlock(); |
200 |
> |
}}); |
201 |
> |
|
202 |
> |
Thread.sleep(SHORT_DELAY_MS); |
203 |
> |
t.interrupt(); |
204 |
> |
Thread.sleep(SHORT_DELAY_MS); |
205 |
> |
lock.writeLock().unlock(); |
206 |
> |
t.join(); |
207 |
> |
} |
208 |
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|
209 |
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/** |
210 |
< |
* read-trylock fails if locked |
211 |
< |
*/ |
212 |
< |
public void testReadTryLockWhenLocked() { |
213 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
214 |
< |
lock.writeLock().lock(); |
215 |
< |
Thread t = new Thread(new Runnable() { |
216 |
< |
public void run() { |
217 |
< |
threadAssertFalse(lock.readLock().tryLock()); |
218 |
< |
} |
219 |
< |
}); |
220 |
< |
try { |
221 |
< |
t.start(); |
222 |
< |
t.join(); |
223 |
< |
lock.writeLock().unlock(); |
224 |
< |
} catch(Exception e){ |
293 |
< |
unexpectedException(); |
294 |
< |
} |
295 |
< |
} |
210 |
> |
* timed write-tryLock is interruptible |
211 |
> |
*/ |
212 |
> |
public void testWriteTryLock_Interrupted() throws InterruptedException { |
213 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
214 |
> |
lock.writeLock().lock(); |
215 |
> |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
216 |
> |
public void realRun() throws InterruptedException { |
217 |
> |
lock.writeLock().tryLock(SMALL_DELAY_MS, MILLISECONDS); |
218 |
> |
}}); |
219 |
> |
|
220 |
> |
Thread.sleep(SHORT_DELAY_MS); |
221 |
> |
t.interrupt(); |
222 |
> |
lock.writeLock().unlock(); |
223 |
> |
t.join(); |
224 |
> |
} |
225 |
|
|
226 |
|
/** |
227 |
< |
* Multiple threads can hold a read lock when not write-locked |
227 |
> |
* read-lockInterruptibly is interruptible |
228 |
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*/ |
229 |
< |
public void testMultipleReadLocks() { |
230 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
231 |
< |
lock.readLock().lock(); |
232 |
< |
Thread t = new Thread(new Runnable() { |
233 |
< |
public void run() { |
234 |
< |
threadAssertTrue(lock.readLock().tryLock()); |
235 |
< |
lock.readLock().unlock(); |
236 |
< |
} |
237 |
< |
}); |
238 |
< |
try { |
239 |
< |
t.start(); |
240 |
< |
t.join(); |
241 |
< |
lock.readLock().unlock(); |
242 |
< |
} catch(Exception e){ |
314 |
< |
unexpectedException(); |
315 |
< |
} |
316 |
< |
} |
229 |
> |
public void testReadLockInterruptibly_Interrupted() throws InterruptedException { |
230 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
231 |
> |
lock.writeLock().lock(); |
232 |
> |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
233 |
> |
public void realRun() throws InterruptedException { |
234 |
> |
lock.readLock().lockInterruptibly(); |
235 |
> |
}}); |
236 |
> |
|
237 |
> |
Thread.sleep(SHORT_DELAY_MS); |
238 |
> |
t.interrupt(); |
239 |
> |
Thread.sleep(SHORT_DELAY_MS); |
240 |
> |
lock.writeLock().unlock(); |
241 |
> |
t.join(); |
242 |
> |
} |
243 |
|
|
244 |
|
/** |
245 |
< |
* A writelock succeeds after reading threads unlock |
245 |
> |
* timed read-tryLock is interruptible |
246 |
|
*/ |
247 |
< |
public void testWriteAfterMultipleReadLocks() { |
248 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
249 |
< |
lock.readLock().lock(); |
250 |
< |
Thread t1 = new Thread(new Runnable() { |
251 |
< |
public void run() { |
252 |
< |
lock.readLock().lock(); |
253 |
< |
lock.readLock().unlock(); |
254 |
< |
} |
255 |
< |
}); |
256 |
< |
Thread t2 = new Thread(new Runnable() { |
257 |
< |
public void run() { |
258 |
< |
lock.writeLock().lock(); |
333 |
< |
lock.writeLock().unlock(); |
334 |
< |
} |
335 |
< |
}); |
247 |
> |
public void testReadTryLock_Interrupted() throws InterruptedException { |
248 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
249 |
> |
lock.writeLock().lock(); |
250 |
> |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
251 |
> |
public void realRun() throws InterruptedException { |
252 |
> |
lock.readLock().tryLock(LONG_DELAY_MS, MILLISECONDS); |
253 |
> |
}}); |
254 |
> |
|
255 |
> |
Thread.sleep(SHORT_DELAY_MS); |
256 |
> |
t.interrupt(); |
257 |
> |
t.join(); |
258 |
> |
} |
259 |
|
|
337 |
– |
try { |
338 |
– |
t1.start(); |
339 |
– |
t2.start(); |
340 |
– |
Thread.sleep(SHORT_DELAY_MS); |
341 |
– |
lock.readLock().unlock(); |
342 |
– |
t1.join(MEDIUM_DELAY_MS); |
343 |
– |
t2.join(MEDIUM_DELAY_MS); |
344 |
– |
assertTrue(!t1.isAlive()); |
345 |
– |
assertTrue(!t2.isAlive()); |
346 |
– |
|
347 |
– |
} catch(Exception e){ |
348 |
– |
unexpectedException(); |
349 |
– |
} |
350 |
– |
} |
260 |
|
|
261 |
|
/** |
262 |
< |
* Readlocks succeed after a writing thread unlocks |
262 |
> |
* write-tryLock fails if locked |
263 |
|
*/ |
264 |
< |
public void testReadAfterWriteLock() { |
265 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
266 |
< |
lock.writeLock().lock(); |
267 |
< |
Thread t1 = new Thread(new Runnable() { |
268 |
< |
public void run() { |
269 |
< |
lock.readLock().lock(); |
270 |
< |
lock.readLock().unlock(); |
362 |
< |
} |
363 |
< |
}); |
364 |
< |
Thread t2 = new Thread(new Runnable() { |
365 |
< |
public void run() { |
366 |
< |
lock.readLock().lock(); |
367 |
< |
lock.readLock().unlock(); |
368 |
< |
} |
369 |
< |
}); |
370 |
< |
|
371 |
< |
try { |
372 |
< |
t1.start(); |
373 |
< |
t2.start(); |
374 |
< |
Thread.sleep(SHORT_DELAY_MS); |
375 |
< |
lock.writeLock().unlock(); |
376 |
< |
t1.join(MEDIUM_DELAY_MS); |
377 |
< |
t2.join(MEDIUM_DELAY_MS); |
378 |
< |
assertTrue(!t1.isAlive()); |
379 |
< |
assertTrue(!t2.isAlive()); |
380 |
< |
|
381 |
< |
} catch(Exception e){ |
382 |
< |
unexpectedException(); |
383 |
< |
} |
384 |
< |
} |
264 |
> |
public void testWriteTryLockWhenLocked() throws InterruptedException { |
265 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
266 |
> |
lock.writeLock().lock(); |
267 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
268 |
> |
public void realRun() { |
269 |
> |
assertFalse(lock.writeLock().tryLock()); |
270 |
> |
}}); |
271 |
|
|
272 |
+ |
t.join(); |
273 |
+ |
lock.writeLock().unlock(); |
274 |
+ |
} |
275 |
|
|
276 |
|
/** |
277 |
< |
* Read trylock succeeds if readlocked but not writelocked |
277 |
> |
* read-tryLock fails if locked |
278 |
|
*/ |
279 |
< |
public void testTryLockWhenReadLocked() { |
280 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
281 |
< |
lock.readLock().lock(); |
282 |
< |
Thread t = new Thread(new Runnable() { |
283 |
< |
public void run() { |
284 |
< |
threadAssertTrue(lock.readLock().tryLock()); |
285 |
< |
lock.readLock().unlock(); |
397 |
< |
} |
398 |
< |
}); |
399 |
< |
try { |
400 |
< |
t.start(); |
401 |
< |
t.join(); |
402 |
< |
lock.readLock().unlock(); |
403 |
< |
} catch(Exception e){ |
404 |
< |
unexpectedException(); |
405 |
< |
} |
406 |
< |
} |
279 |
> |
public void testReadTryLockWhenLocked() throws InterruptedException { |
280 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
281 |
> |
lock.writeLock().lock(); |
282 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
283 |
> |
public void realRun() { |
284 |
> |
assertFalse(lock.readLock().tryLock()); |
285 |
> |
}}); |
286 |
|
|
287 |
< |
|
287 |
> |
t.join(); |
288 |
> |
lock.writeLock().unlock(); |
289 |
> |
} |
290 |
|
|
291 |
|
/** |
292 |
< |
* write trylock fails when readlocked |
292 |
> |
* Multiple threads can hold a read lock when not write-locked |
293 |
|
*/ |
294 |
< |
public void testWriteTryLockWhenReadLocked() { |
295 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
296 |
< |
lock.readLock().lock(); |
297 |
< |
Thread t = new Thread(new Runnable() { |
298 |
< |
public void run() { |
299 |
< |
threadAssertFalse(lock.writeLock().tryLock()); |
300 |
< |
} |
301 |
< |
}); |
421 |
< |
try { |
422 |
< |
t.start(); |
423 |
< |
t.join(); |
424 |
< |
lock.readLock().unlock(); |
425 |
< |
} catch(Exception e){ |
426 |
< |
unexpectedException(); |
427 |
< |
} |
428 |
< |
} |
294 |
> |
public void testMultipleReadLocks() throws InterruptedException { |
295 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
296 |
> |
lock.readLock().lock(); |
297 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
298 |
> |
public void realRun() { |
299 |
> |
assertTrue(lock.readLock().tryLock()); |
300 |
> |
lock.readLock().unlock(); |
301 |
> |
}}); |
302 |
|
|
303 |
< |
|
303 |
> |
t.join(); |
304 |
> |
lock.readLock().unlock(); |
305 |
> |
} |
306 |
|
|
307 |
|
/** |
308 |
< |
* write timed trylock times out if locked |
308 |
> |
* A writelock succeeds after reading threads unlock |
309 |
|
*/ |
310 |
< |
public void testWriteTryLock_Timeout() { |
311 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
312 |
< |
lock.writeLock().lock(); |
313 |
< |
Thread t = new Thread(new Runnable() { |
314 |
< |
public void run() { |
315 |
< |
try { |
316 |
< |
threadAssertFalse(lock.writeLock().tryLock(1, TimeUnit.MILLISECONDS)); |
317 |
< |
} catch (Exception ex) { |
318 |
< |
threadUnexpectedException(); |
319 |
< |
} |
320 |
< |
} |
321 |
< |
}); |
322 |
< |
try { |
323 |
< |
t.start(); |
324 |
< |
t.join(); |
325 |
< |
lock.writeLock().unlock(); |
326 |
< |
} catch(Exception e){ |
327 |
< |
unexpectedException(); |
328 |
< |
} |
329 |
< |
} |
310 |
> |
public void testWriteAfterMultipleReadLocks() throws InterruptedException { |
311 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
312 |
> |
lock.readLock().lock(); |
313 |
> |
Thread t1 = newStartedThread(new CheckedRunnable() { |
314 |
> |
public void realRun() { |
315 |
> |
lock.readLock().lock(); |
316 |
> |
lock.readLock().unlock(); |
317 |
> |
}}); |
318 |
> |
Thread t2 = newStartedThread(new CheckedRunnable() { |
319 |
> |
public void realRun() { |
320 |
> |
lock.writeLock().lock(); |
321 |
> |
lock.writeLock().unlock(); |
322 |
> |
}}); |
323 |
> |
|
324 |
> |
Thread.sleep(SHORT_DELAY_MS); |
325 |
> |
lock.readLock().unlock(); |
326 |
> |
t1.join(MEDIUM_DELAY_MS); |
327 |
> |
t2.join(MEDIUM_DELAY_MS); |
328 |
> |
assertTrue(!t1.isAlive()); |
329 |
> |
assertTrue(!t2.isAlive()); |
330 |
> |
} |
331 |
|
|
332 |
|
/** |
333 |
< |
* read timed trylock times out if write-locked |
333 |
> |
* Readlocks succeed after a writing thread unlocks |
334 |
|
*/ |
335 |
< |
public void testReadTryLock_Timeout() { |
336 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
337 |
< |
lock.writeLock().lock(); |
338 |
< |
Thread t = new Thread(new Runnable() { |
339 |
< |
public void run() { |
340 |
< |
try { |
341 |
< |
threadAssertFalse(lock.readLock().tryLock(1, TimeUnit.MILLISECONDS)); |
342 |
< |
} catch (Exception ex) { |
343 |
< |
threadUnexpectedException(); |
344 |
< |
} |
345 |
< |
} |
346 |
< |
}); |
347 |
< |
try { |
348 |
< |
t.start(); |
349 |
< |
t.join(); |
350 |
< |
lock.writeLock().unlock(); |
351 |
< |
} catch(Exception e){ |
352 |
< |
unexpectedException(); |
353 |
< |
} |
354 |
< |
} |
335 |
> |
public void testReadAfterWriteLock() throws InterruptedException { |
336 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
337 |
> |
lock.writeLock().lock(); |
338 |
> |
Thread t1 = newStartedThread(new CheckedRunnable() { |
339 |
> |
public void realRun() { |
340 |
> |
lock.readLock().lock(); |
341 |
> |
lock.readLock().unlock(); |
342 |
> |
}}); |
343 |
> |
Thread t2 = newStartedThread(new CheckedRunnable() { |
344 |
> |
public void realRun() { |
345 |
> |
lock.readLock().lock(); |
346 |
> |
lock.readLock().unlock(); |
347 |
> |
}}); |
348 |
> |
|
349 |
> |
Thread.sleep(SHORT_DELAY_MS); |
350 |
> |
lock.writeLock().unlock(); |
351 |
> |
t1.join(MEDIUM_DELAY_MS); |
352 |
> |
t2.join(MEDIUM_DELAY_MS); |
353 |
> |
assertTrue(!t1.isAlive()); |
354 |
> |
assertTrue(!t2.isAlive()); |
355 |
> |
} |
356 |
> |
|
357 |
> |
/** |
358 |
> |
* Read trylock succeeds if write locked by current thread |
359 |
> |
*/ |
360 |
> |
public void testReadHoldingWriteLock() { |
361 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
362 |
> |
lock.writeLock().lock(); |
363 |
> |
assertTrue(lock.readLock().tryLock()); |
364 |
> |
lock.readLock().unlock(); |
365 |
> |
lock.writeLock().unlock(); |
366 |
> |
} |
367 |
> |
|
368 |
> |
/** |
369 |
> |
* Read lock succeeds if write locked by current thread even if |
370 |
> |
* other threads are waiting for readlock |
371 |
> |
*/ |
372 |
> |
public void testReadHoldingWriteLock2() throws InterruptedException { |
373 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
374 |
> |
lock.writeLock().lock(); |
375 |
> |
Thread t1 = newStartedThread(new CheckedRunnable() { |
376 |
> |
public void realRun() { |
377 |
> |
lock.readLock().lock(); |
378 |
> |
lock.readLock().unlock(); |
379 |
> |
}}); |
380 |
> |
Thread t2 = newStartedThread(new CheckedRunnable() { |
381 |
> |
public void realRun() { |
382 |
> |
lock.readLock().lock(); |
383 |
> |
lock.readLock().unlock(); |
384 |
> |
}}); |
385 |
> |
|
386 |
> |
lock.readLock().lock(); |
387 |
> |
lock.readLock().unlock(); |
388 |
> |
Thread.sleep(SHORT_DELAY_MS); |
389 |
> |
lock.readLock().lock(); |
390 |
> |
lock.readLock().unlock(); |
391 |
> |
lock.writeLock().unlock(); |
392 |
> |
t1.join(MEDIUM_DELAY_MS); |
393 |
> |
t2.join(MEDIUM_DELAY_MS); |
394 |
> |
assertTrue(!t1.isAlive()); |
395 |
> |
assertTrue(!t2.isAlive()); |
396 |
> |
} |
397 |
> |
|
398 |
> |
/** |
399 |
> |
* Read lock succeeds if write locked by current thread even if |
400 |
> |
* other threads are waiting for writelock |
401 |
> |
*/ |
402 |
> |
public void testReadHoldingWriteLock3() throws InterruptedException { |
403 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
404 |
> |
lock.writeLock().lock(); |
405 |
> |
Thread t1 = newStartedThread(new CheckedRunnable() { |
406 |
> |
public void realRun() { |
407 |
> |
lock.writeLock().lock(); |
408 |
> |
lock.writeLock().unlock(); |
409 |
> |
}}); |
410 |
> |
Thread t2 = newStartedThread(new CheckedRunnable() { |
411 |
> |
public void realRun() { |
412 |
> |
lock.writeLock().lock(); |
413 |
> |
lock.writeLock().unlock(); |
414 |
> |
}}); |
415 |
> |
|
416 |
> |
lock.readLock().lock(); |
417 |
> |
lock.readLock().unlock(); |
418 |
> |
Thread.sleep(SHORT_DELAY_MS); |
419 |
> |
lock.readLock().lock(); |
420 |
> |
lock.readLock().unlock(); |
421 |
> |
lock.writeLock().unlock(); |
422 |
> |
t1.join(MEDIUM_DELAY_MS); |
423 |
> |
t2.join(MEDIUM_DELAY_MS); |
424 |
> |
assertTrue(!t1.isAlive()); |
425 |
> |
assertTrue(!t2.isAlive()); |
426 |
> |
} |
427 |
> |
|
428 |
> |
|
429 |
> |
/** |
430 |
> |
* Write lock succeeds if write locked by current thread even if |
431 |
> |
* other threads are waiting for writelock |
432 |
> |
*/ |
433 |
> |
public void testWriteHoldingWriteLock4() throws InterruptedException { |
434 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
435 |
> |
lock.writeLock().lock(); |
436 |
> |
Thread t1 = newStartedThread(new CheckedRunnable() { |
437 |
> |
public void realRun() { |
438 |
> |
lock.writeLock().lock(); |
439 |
> |
lock.writeLock().unlock(); |
440 |
> |
}}); |
441 |
> |
Thread t2 = newStartedThread(new CheckedRunnable() { |
442 |
> |
public void realRun() { |
443 |
> |
lock.writeLock().lock(); |
444 |
> |
lock.writeLock().unlock(); |
445 |
> |
}}); |
446 |
> |
|
447 |
> |
lock.writeLock().lock(); |
448 |
> |
lock.writeLock().unlock(); |
449 |
> |
Thread.sleep(SHORT_DELAY_MS); |
450 |
> |
lock.writeLock().lock(); |
451 |
> |
lock.writeLock().unlock(); |
452 |
> |
lock.writeLock().unlock(); |
453 |
> |
t1.join(MEDIUM_DELAY_MS); |
454 |
> |
t2.join(MEDIUM_DELAY_MS); |
455 |
> |
assertTrue(!t1.isAlive()); |
456 |
> |
assertTrue(!t2.isAlive()); |
457 |
> |
} |
458 |
> |
|
459 |
> |
|
460 |
> |
/** |
461 |
> |
* Fair Read trylock succeeds if write locked by current thread |
462 |
> |
*/ |
463 |
> |
public void testReadHoldingWriteLockFair() { |
464 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true); |
465 |
> |
lock.writeLock().lock(); |
466 |
> |
assertTrue(lock.readLock().tryLock()); |
467 |
> |
lock.readLock().unlock(); |
468 |
> |
lock.writeLock().unlock(); |
469 |
> |
} |
470 |
> |
|
471 |
> |
/** |
472 |
> |
* Fair Read lock succeeds if write locked by current thread even if |
473 |
> |
* other threads are waiting for readlock |
474 |
> |
*/ |
475 |
> |
public void testReadHoldingWriteLockFair2() throws InterruptedException { |
476 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true); |
477 |
> |
lock.writeLock().lock(); |
478 |
> |
Thread t1 = newStartedThread(new CheckedRunnable() { |
479 |
> |
public void realRun() { |
480 |
> |
lock.readLock().lock(); |
481 |
> |
lock.readLock().unlock(); |
482 |
> |
}}); |
483 |
> |
Thread t2 = newStartedThread(new CheckedRunnable() { |
484 |
> |
public void realRun() { |
485 |
> |
lock.readLock().lock(); |
486 |
> |
lock.readLock().unlock(); |
487 |
> |
}}); |
488 |
> |
|
489 |
> |
lock.readLock().lock(); |
490 |
> |
lock.readLock().unlock(); |
491 |
> |
Thread.sleep(SHORT_DELAY_MS); |
492 |
> |
lock.readLock().lock(); |
493 |
> |
lock.readLock().unlock(); |
494 |
> |
lock.writeLock().unlock(); |
495 |
> |
t1.join(MEDIUM_DELAY_MS); |
496 |
> |
t2.join(MEDIUM_DELAY_MS); |
497 |
> |
assertTrue(!t1.isAlive()); |
498 |
> |
assertTrue(!t2.isAlive()); |
499 |
> |
} |
500 |
> |
|
501 |
> |
|
502 |
> |
/** |
503 |
> |
* Fair Read lock succeeds if write locked by current thread even if |
504 |
> |
* other threads are waiting for writelock |
505 |
> |
*/ |
506 |
> |
public void testReadHoldingWriteLockFair3() throws InterruptedException { |
507 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true); |
508 |
> |
lock.writeLock().lock(); |
509 |
> |
Thread t1 = newStartedThread(new CheckedRunnable() { |
510 |
> |
public void realRun() { |
511 |
> |
lock.writeLock().lock(); |
512 |
> |
lock.writeLock().unlock(); |
513 |
> |
}}); |
514 |
> |
Thread t2 = newStartedThread(new CheckedRunnable() { |
515 |
> |
public void realRun() { |
516 |
> |
lock.writeLock().lock(); |
517 |
> |
lock.writeLock().unlock(); |
518 |
> |
}}); |
519 |
> |
|
520 |
> |
lock.readLock().lock(); |
521 |
> |
lock.readLock().unlock(); |
522 |
> |
Thread.sleep(SHORT_DELAY_MS); |
523 |
> |
lock.readLock().lock(); |
524 |
> |
lock.readLock().unlock(); |
525 |
> |
lock.writeLock().unlock(); |
526 |
> |
t1.join(MEDIUM_DELAY_MS); |
527 |
> |
t2.join(MEDIUM_DELAY_MS); |
528 |
> |
assertTrue(!t1.isAlive()); |
529 |
> |
assertTrue(!t2.isAlive()); |
530 |
> |
} |
531 |
> |
|
532 |
> |
|
533 |
> |
/** |
534 |
> |
* Fair Write lock succeeds if write locked by current thread even if |
535 |
> |
* other threads are waiting for writelock |
536 |
> |
*/ |
537 |
> |
public void testWriteHoldingWriteLockFair4() throws InterruptedException { |
538 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true); |
539 |
> |
lock.writeLock().lock(); |
540 |
> |
Thread t1 = newStartedThread(new CheckedRunnable() { |
541 |
> |
public void realRun() { |
542 |
> |
lock.writeLock().lock(); |
543 |
> |
lock.writeLock().unlock(); |
544 |
> |
}}); |
545 |
> |
Thread t2 = newStartedThread(new CheckedRunnable() { |
546 |
> |
public void realRun() { |
547 |
> |
lock.writeLock().lock(); |
548 |
> |
lock.writeLock().unlock(); |
549 |
> |
}}); |
550 |
> |
|
551 |
> |
Thread.sleep(SHORT_DELAY_MS); |
552 |
> |
assertTrue(lock.isWriteLockedByCurrentThread()); |
553 |
> |
assertEquals(1, lock.getWriteHoldCount()); |
554 |
> |
lock.writeLock().lock(); |
555 |
> |
assertEquals(2, lock.getWriteHoldCount()); |
556 |
> |
lock.writeLock().unlock(); |
557 |
> |
lock.writeLock().lock(); |
558 |
> |
lock.writeLock().unlock(); |
559 |
> |
lock.writeLock().unlock(); |
560 |
> |
t1.join(MEDIUM_DELAY_MS); |
561 |
> |
t2.join(MEDIUM_DELAY_MS); |
562 |
> |
assertTrue(!t1.isAlive()); |
563 |
> |
assertTrue(!t2.isAlive()); |
564 |
> |
} |
565 |
> |
|
566 |
> |
|
567 |
> |
/** |
568 |
> |
* Read tryLock succeeds if readlocked but not writelocked |
569 |
> |
*/ |
570 |
> |
public void testTryLockWhenReadLocked() throws InterruptedException { |
571 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
572 |
> |
lock.readLock().lock(); |
573 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
574 |
> |
public void realRun() { |
575 |
> |
assertTrue(lock.readLock().tryLock()); |
576 |
> |
lock.readLock().unlock(); |
577 |
> |
}}); |
578 |
> |
|
579 |
> |
t.join(); |
580 |
> |
lock.readLock().unlock(); |
581 |
> |
} |
582 |
> |
|
583 |
> |
/** |
584 |
> |
* write tryLock fails when readlocked |
585 |
> |
*/ |
586 |
> |
public void testWriteTryLockWhenReadLocked() throws InterruptedException { |
587 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
588 |
> |
lock.readLock().lock(); |
589 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
590 |
> |
public void realRun() { |
591 |
> |
assertFalse(lock.writeLock().tryLock()); |
592 |
> |
}}); |
593 |
> |
|
594 |
> |
t.join(); |
595 |
> |
lock.readLock().unlock(); |
596 |
> |
} |
597 |
> |
|
598 |
> |
|
599 |
> |
/** |
600 |
> |
* Fair Read tryLock succeeds if readlocked but not writelocked |
601 |
> |
*/ |
602 |
> |
public void testTryLockWhenReadLockedFair() throws InterruptedException { |
603 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true); |
604 |
> |
lock.readLock().lock(); |
605 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
606 |
> |
public void realRun() { |
607 |
> |
assertTrue(lock.readLock().tryLock()); |
608 |
> |
lock.readLock().unlock(); |
609 |
> |
}}); |
610 |
> |
|
611 |
> |
t.join(); |
612 |
> |
lock.readLock().unlock(); |
613 |
> |
} |
614 |
> |
|
615 |
> |
|
616 |
> |
|
617 |
> |
/** |
618 |
> |
* Fair write tryLock fails when readlocked |
619 |
> |
*/ |
620 |
> |
public void testWriteTryLockWhenReadLockedFair() throws InterruptedException { |
621 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true); |
622 |
> |
lock.readLock().lock(); |
623 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
624 |
> |
public void realRun() { |
625 |
> |
assertFalse(lock.writeLock().tryLock()); |
626 |
> |
}}); |
627 |
> |
|
628 |
> |
t.join(); |
629 |
> |
lock.readLock().unlock(); |
630 |
> |
} |
631 |
> |
|
632 |
> |
|
633 |
> |
|
634 |
> |
/** |
635 |
> |
* write timed tryLock times out if locked |
636 |
> |
*/ |
637 |
> |
public void testWriteTryLock_Timeout() throws InterruptedException { |
638 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
639 |
> |
lock.writeLock().lock(); |
640 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
641 |
> |
public void realRun() throws InterruptedException { |
642 |
> |
assertFalse(lock.writeLock().tryLock(1, MILLISECONDS)); |
643 |
> |
}}); |
644 |
> |
|
645 |
> |
t.join(); |
646 |
> |
assertTrue(lock.writeLock().isHeldByCurrentThread()); |
647 |
> |
lock.writeLock().unlock(); |
648 |
> |
} |
649 |
> |
|
650 |
> |
/** |
651 |
> |
* read timed tryLock times out if write-locked |
652 |
> |
*/ |
653 |
> |
public void testReadTryLock_Timeout() throws InterruptedException { |
654 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
655 |
> |
lock.writeLock().lock(); |
656 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
657 |
> |
public void realRun() throws InterruptedException { |
658 |
> |
assertFalse(lock.readLock().tryLock(1, MILLISECONDS)); |
659 |
> |
}}); |
660 |
> |
|
661 |
> |
t.join(); |
662 |
> |
assertTrue(lock.writeLock().isHeldByCurrentThread()); |
663 |
> |
lock.writeLock().unlock(); |
664 |
> |
} |
665 |
|
|
666 |
|
|
667 |
|
/** |
668 |
|
* write lockInterruptibly succeeds if lock free else is interruptible |
669 |
|
*/ |
670 |
< |
public void testWriteLockInterruptibly() { |
671 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
672 |
< |
try { |
673 |
< |
lock.writeLock().lockInterruptibly(); |
674 |
< |
} catch(Exception e) { |
675 |
< |
unexpectedException(); |
676 |
< |
} |
677 |
< |
Thread t = new Thread(new Runnable() { |
678 |
< |
public void run() { |
679 |
< |
try { |
680 |
< |
lock.writeLock().lockInterruptibly(); |
681 |
< |
threadShouldThrow(); |
682 |
< |
} |
497 |
< |
catch(InterruptedException success) { |
498 |
< |
} |
499 |
< |
} |
500 |
< |
}); |
501 |
< |
try { |
502 |
< |
t.start(); |
503 |
< |
t.interrupt(); |
504 |
< |
t.join(); |
505 |
< |
lock.writeLock().unlock(); |
506 |
< |
} catch(Exception e){ |
507 |
< |
unexpectedException(); |
508 |
< |
} |
670 |
> |
public void testWriteLockInterruptibly() throws InterruptedException { |
671 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
672 |
> |
lock.writeLock().lockInterruptibly(); |
673 |
> |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
674 |
> |
public void realRun() throws InterruptedException { |
675 |
> |
lock.writeLock().lockInterruptibly(); |
676 |
> |
}}); |
677 |
> |
|
678 |
> |
Thread.sleep(SHORT_DELAY_MS); |
679 |
> |
t.interrupt(); |
680 |
> |
Thread.sleep(SHORT_DELAY_MS); |
681 |
> |
t.join(); |
682 |
> |
lock.writeLock().unlock(); |
683 |
|
} |
684 |
|
|
685 |
|
/** |
686 |
< |
* read lockInterruptibly succeeds if lock free else is interruptible |
687 |
< |
*/ |
688 |
< |
public void testReadLockInterruptibly() { |
689 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
690 |
< |
try { |
691 |
< |
lock.writeLock().lockInterruptibly(); |
692 |
< |
} catch(Exception e) { |
693 |
< |
unexpectedException(); |
694 |
< |
} |
695 |
< |
Thread t = new Thread(new Runnable() { |
696 |
< |
public void run() { |
697 |
< |
try { |
698 |
< |
lock.readLock().lockInterruptibly(); |
699 |
< |
threadShouldThrow(); |
526 |
< |
} |
527 |
< |
catch(InterruptedException success) { |
528 |
< |
} |
529 |
< |
} |
530 |
< |
}); |
531 |
< |
try { |
532 |
< |
t.start(); |
533 |
< |
t.interrupt(); |
534 |
< |
t.join(); |
535 |
< |
lock.writeLock().unlock(); |
536 |
< |
} catch(Exception e){ |
537 |
< |
unexpectedException(); |
538 |
< |
} |
686 |
> |
* read lockInterruptibly succeeds if lock free else is interruptible |
687 |
> |
*/ |
688 |
> |
public void testReadLockInterruptibly() throws InterruptedException { |
689 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
690 |
> |
lock.writeLock().lockInterruptibly(); |
691 |
> |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
692 |
> |
public void realRun() throws InterruptedException { |
693 |
> |
lock.readLock().lockInterruptibly(); |
694 |
> |
}}); |
695 |
> |
|
696 |
> |
Thread.sleep(SHORT_DELAY_MS); |
697 |
> |
t.interrupt(); |
698 |
> |
t.join(); |
699 |
> |
lock.writeLock().unlock(); |
700 |
|
} |
701 |
|
|
702 |
|
/** |
703 |
|
* Calling await without holding lock throws IllegalMonitorStateException |
704 |
|
*/ |
705 |
< |
public void testAwait_IllegalMonitor() { |
706 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
705 |
> |
public void testAwait_IllegalMonitor() throws InterruptedException { |
706 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
707 |
|
final Condition c = lock.writeLock().newCondition(); |
708 |
|
try { |
709 |
|
c.await(); |
710 |
|
shouldThrow(); |
711 |
< |
} |
551 |
< |
catch (IllegalMonitorStateException success) { |
552 |
< |
} |
553 |
< |
catch (Exception ex) { |
554 |
< |
shouldThrow(); |
555 |
< |
} |
711 |
> |
} catch (IllegalMonitorStateException success) {} |
712 |
|
} |
713 |
|
|
714 |
|
/** |
715 |
|
* Calling signal without holding lock throws IllegalMonitorStateException |
716 |
|
*/ |
717 |
|
public void testSignal_IllegalMonitor() { |
718 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
718 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
719 |
|
final Condition c = lock.writeLock().newCondition(); |
720 |
|
try { |
721 |
|
c.signal(); |
722 |
|
shouldThrow(); |
723 |
< |
} |
568 |
< |
catch (IllegalMonitorStateException success) { |
569 |
< |
} |
570 |
< |
catch (Exception ex) { |
571 |
< |
unexpectedException(); |
572 |
< |
} |
723 |
> |
} catch (IllegalMonitorStateException success) {} |
724 |
|
} |
725 |
|
|
726 |
|
/** |
727 |
|
* awaitNanos without a signal times out |
728 |
|
*/ |
729 |
< |
public void testAwaitNanos_Timeout() { |
730 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
729 |
> |
public void testAwaitNanos_Timeout() throws InterruptedException { |
730 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
731 |
|
final Condition c = lock.writeLock().newCondition(); |
732 |
< |
try { |
733 |
< |
lock.writeLock().lock(); |
734 |
< |
long t = c.awaitNanos(100); |
735 |
< |
assertTrue(t <= 0); |
736 |
< |
lock.writeLock().unlock(); |
586 |
< |
} |
587 |
< |
catch (Exception ex) { |
588 |
< |
unexpectedException(); |
589 |
< |
} |
732 |
> |
|
733 |
> |
lock.writeLock().lock(); |
734 |
> |
long t = c.awaitNanos(100); |
735 |
> |
assertTrue(t <= 0); |
736 |
> |
lock.writeLock().unlock(); |
737 |
|
} |
738 |
|
|
739 |
|
|
740 |
|
/** |
741 |
< |
* timed await without a signal times out |
741 |
> |
* timed await without a signal times out |
742 |
|
*/ |
743 |
< |
public void testAwait_Timeout() { |
744 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
743 |
> |
public void testAwait_Timeout() throws InterruptedException { |
744 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
745 |
|
final Condition c = lock.writeLock().newCondition(); |
746 |
< |
try { |
747 |
< |
lock.writeLock().lock(); |
748 |
< |
assertFalse(c.await(10, TimeUnit.MILLISECONDS)); |
602 |
< |
lock.writeLock().unlock(); |
603 |
< |
} |
604 |
< |
catch (Exception ex) { |
605 |
< |
unexpectedException(); |
606 |
< |
} |
746 |
> |
lock.writeLock().lock(); |
747 |
> |
assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS)); |
748 |
> |
lock.writeLock().unlock(); |
749 |
|
} |
750 |
|
|
751 |
|
/** |
752 |
|
* awaitUntil without a signal times out |
753 |
|
*/ |
754 |
< |
public void testAwaitUntil_Timeout() { |
755 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
754 |
> |
public void testAwaitUntil_Timeout() throws InterruptedException { |
755 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
756 |
|
final Condition c = lock.writeLock().newCondition(); |
757 |
< |
try { |
758 |
< |
lock.writeLock().lock(); |
759 |
< |
java.util.Date d = new java.util.Date(); |
760 |
< |
assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10))); |
619 |
< |
lock.writeLock().unlock(); |
620 |
< |
} |
621 |
< |
catch (Exception ex) { |
622 |
< |
unexpectedException(); |
623 |
< |
} |
757 |
> |
lock.writeLock().lock(); |
758 |
> |
java.util.Date d = new java.util.Date(); |
759 |
> |
assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10))); |
760 |
> |
lock.writeLock().unlock(); |
761 |
|
} |
762 |
|
|
763 |
|
/** |
764 |
|
* await returns when signalled |
765 |
|
*/ |
766 |
< |
public void testAwait() { |
767 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
766 |
> |
public void testAwait() throws InterruptedException { |
767 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
768 |
|
final Condition c = lock.writeLock().newCondition(); |
769 |
< |
Thread t = new Thread(new Runnable() { |
770 |
< |
public void run() { |
771 |
< |
try { |
772 |
< |
lock.writeLock().lock(); |
773 |
< |
c.await(); |
774 |
< |
lock.writeLock().unlock(); |
775 |
< |
} |
776 |
< |
catch(InterruptedException e) { |
777 |
< |
threadUnexpectedException(); |
778 |
< |
} |
779 |
< |
} |
780 |
< |
}); |
769 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
770 |
> |
public void realRun() throws InterruptedException { |
771 |
> |
lock.writeLock().lock(); |
772 |
> |
c.await(); |
773 |
> |
lock.writeLock().unlock(); |
774 |
> |
}}); |
775 |
> |
|
776 |
> |
Thread.sleep(SHORT_DELAY_MS); |
777 |
> |
lock.writeLock().lock(); |
778 |
> |
c.signal(); |
779 |
> |
lock.writeLock().unlock(); |
780 |
> |
t.join(SHORT_DELAY_MS); |
781 |
> |
assertFalse(t.isAlive()); |
782 |
> |
} |
783 |
> |
|
784 |
> |
/** A helper class for uninterruptible wait tests */ |
785 |
> |
class UninterruptableThread extends Thread { |
786 |
> |
private Lock lock; |
787 |
> |
private Condition c; |
788 |
> |
|
789 |
> |
public volatile boolean canAwake = false; |
790 |
> |
public volatile boolean interrupted = false; |
791 |
> |
public volatile boolean lockStarted = false; |
792 |
> |
|
793 |
> |
public UninterruptableThread(Lock lock, Condition c) { |
794 |
> |
this.lock = lock; |
795 |
> |
this.c = c; |
796 |
> |
} |
797 |
> |
|
798 |
> |
public synchronized void run() { |
799 |
> |
lock.lock(); |
800 |
> |
lockStarted = true; |
801 |
|
|
802 |
< |
try { |
803 |
< |
t.start(); |
804 |
< |
Thread.sleep(SHORT_DELAY_MS); |
805 |
< |
lock.writeLock().lock(); |
806 |
< |
c.signal(); |
807 |
< |
lock.writeLock().unlock(); |
651 |
< |
t.join(SHORT_DELAY_MS); |
652 |
< |
assertFalse(t.isAlive()); |
653 |
< |
} |
654 |
< |
catch (Exception ex) { |
655 |
< |
unexpectedException(); |
802 |
> |
while (!canAwake) { |
803 |
> |
c.awaitUninterruptibly(); |
804 |
> |
} |
805 |
> |
|
806 |
> |
interrupted = isInterrupted(); |
807 |
> |
lock.unlock(); |
808 |
|
} |
809 |
|
} |
810 |
|
|
811 |
|
/** |
812 |
|
* awaitUninterruptibly doesn't abort on interrupt |
813 |
|
*/ |
814 |
< |
public void testAwaitUninterruptibly() { |
815 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
814 |
> |
public void testAwaitUninterruptibly() throws InterruptedException { |
815 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
816 |
|
final Condition c = lock.writeLock().newCondition(); |
817 |
< |
Thread t = new Thread(new Runnable() { |
818 |
< |
public void run() { |
819 |
< |
lock.writeLock().lock(); |
820 |
< |
c.awaitUninterruptibly(); |
821 |
< |
lock.writeLock().unlock(); |
822 |
< |
} |
823 |
< |
}); |
817 |
> |
UninterruptableThread thread = new UninterruptableThread(lock.writeLock(), c); |
818 |
> |
|
819 |
> |
thread.start(); |
820 |
> |
|
821 |
> |
while (!thread.lockStarted) { |
822 |
> |
Thread.sleep(100); |
823 |
> |
} |
824 |
|
|
825 |
+ |
lock.writeLock().lock(); |
826 |
|
try { |
827 |
< |
t.start(); |
828 |
< |
Thread.sleep(SHORT_DELAY_MS); |
676 |
< |
t.interrupt(); |
677 |
< |
lock.writeLock().lock(); |
827 |
> |
thread.interrupt(); |
828 |
> |
thread.canAwake = true; |
829 |
|
c.signal(); |
830 |
+ |
} finally { |
831 |
|
lock.writeLock().unlock(); |
680 |
– |
assert(t.isInterrupted()); |
681 |
– |
t.join(SHORT_DELAY_MS); |
682 |
– |
assertFalse(t.isAlive()); |
683 |
– |
} |
684 |
– |
catch (Exception ex) { |
685 |
– |
unexpectedException(); |
832 |
|
} |
833 |
+ |
|
834 |
+ |
thread.join(); |
835 |
+ |
assertTrue(thread.interrupted); |
836 |
+ |
assertFalse(thread.isAlive()); |
837 |
|
} |
838 |
|
|
839 |
|
/** |
840 |
|
* await is interruptible |
841 |
|
*/ |
842 |
< |
public void testAwait_Interrupt() { |
843 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
842 |
> |
public void testAwait_Interrupt() throws InterruptedException { |
843 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
844 |
|
final Condition c = lock.writeLock().newCondition(); |
845 |
< |
Thread t = new Thread(new Runnable() { |
846 |
< |
public void run() { |
847 |
< |
try { |
848 |
< |
lock.writeLock().lock(); |
849 |
< |
c.await(); |
850 |
< |
lock.writeLock().unlock(); |
851 |
< |
threadShouldThrow(); |
852 |
< |
} |
853 |
< |
catch(InterruptedException success) { |
854 |
< |
} |
855 |
< |
} |
706 |
< |
}); |
707 |
< |
|
708 |
< |
try { |
709 |
< |
t.start(); |
710 |
< |
Thread.sleep(SHORT_DELAY_MS); |
711 |
< |
t.interrupt(); |
712 |
< |
t.join(SHORT_DELAY_MS); |
713 |
< |
assertFalse(t.isAlive()); |
714 |
< |
} |
715 |
< |
catch (Exception ex) { |
716 |
< |
unexpectedException(); |
717 |
< |
} |
845 |
> |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
846 |
> |
public void realRun() throws InterruptedException { |
847 |
> |
lock.writeLock().lock(); |
848 |
> |
c.await(); |
849 |
> |
lock.writeLock().unlock(); |
850 |
> |
}}); |
851 |
> |
|
852 |
> |
Thread.sleep(SHORT_DELAY_MS); |
853 |
> |
t.interrupt(); |
854 |
> |
t.join(SHORT_DELAY_MS); |
855 |
> |
assertFalse(t.isAlive()); |
856 |
|
} |
857 |
|
|
858 |
|
/** |
859 |
|
* awaitNanos is interruptible |
860 |
|
*/ |
861 |
< |
public void testAwaitNanos_Interrupt() { |
862 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
861 |
> |
public void testAwaitNanos_Interrupt() throws InterruptedException { |
862 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
863 |
|
final Condition c = lock.writeLock().newCondition(); |
864 |
< |
Thread t = new Thread(new Runnable() { |
865 |
< |
public void run() { |
866 |
< |
try { |
867 |
< |
lock.writeLock().lock(); |
868 |
< |
c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000); |
869 |
< |
lock.writeLock().unlock(); |
870 |
< |
threadShouldThrow(); |
871 |
< |
} |
872 |
< |
catch(InterruptedException success) { |
873 |
< |
} |
874 |
< |
} |
737 |
< |
}); |
738 |
< |
|
739 |
< |
try { |
740 |
< |
t.start(); |
741 |
< |
Thread.sleep(SHORT_DELAY_MS); |
742 |
< |
t.interrupt(); |
743 |
< |
t.join(SHORT_DELAY_MS); |
744 |
< |
assertFalse(t.isAlive()); |
745 |
< |
} |
746 |
< |
catch (Exception ex) { |
747 |
< |
unexpectedException(); |
748 |
< |
} |
864 |
> |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
865 |
> |
public void realRun() throws InterruptedException { |
866 |
> |
lock.writeLock().lock(); |
867 |
> |
c.awaitNanos(MILLISECONDS.toNanos(LONG_DELAY_MS)); |
868 |
> |
lock.writeLock().unlock(); |
869 |
> |
}}); |
870 |
> |
|
871 |
> |
Thread.sleep(SHORT_DELAY_MS); |
872 |
> |
t.interrupt(); |
873 |
> |
t.join(SHORT_DELAY_MS); |
874 |
> |
assertFalse(t.isAlive()); |
875 |
|
} |
876 |
|
|
877 |
|
/** |
878 |
|
* awaitUntil is interruptible |
879 |
|
*/ |
880 |
< |
public void testAwaitUntil_Interrupt() { |
881 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
880 |
> |
public void testAwaitUntil_Interrupt() throws InterruptedException { |
881 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
882 |
|
final Condition c = lock.writeLock().newCondition(); |
883 |
< |
Thread t = new Thread(new Runnable() { |
884 |
< |
public void run() { |
885 |
< |
try { |
886 |
< |
lock.writeLock().lock(); |
887 |
< |
java.util.Date d = new java.util.Date(); |
888 |
< |
c.awaitUntil(new java.util.Date(d.getTime() + 10000)); |
889 |
< |
lock.writeLock().unlock(); |
890 |
< |
threadShouldThrow(); |
891 |
< |
} |
892 |
< |
catch(InterruptedException success) { |
893 |
< |
} |
894 |
< |
} |
769 |
< |
}); |
770 |
< |
|
771 |
< |
try { |
772 |
< |
t.start(); |
773 |
< |
Thread.sleep(SHORT_DELAY_MS); |
774 |
< |
t.interrupt(); |
775 |
< |
t.join(SHORT_DELAY_MS); |
776 |
< |
assertFalse(t.isAlive()); |
777 |
< |
} |
778 |
< |
catch (Exception ex) { |
779 |
< |
unexpectedException(); |
780 |
< |
} |
883 |
> |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
884 |
> |
public void realRun() throws InterruptedException { |
885 |
> |
lock.writeLock().lock(); |
886 |
> |
java.util.Date d = new java.util.Date(); |
887 |
> |
c.awaitUntil(new java.util.Date(d.getTime() + 10000)); |
888 |
> |
lock.writeLock().unlock(); |
889 |
> |
}}); |
890 |
> |
|
891 |
> |
Thread.sleep(SHORT_DELAY_MS); |
892 |
> |
t.interrupt(); |
893 |
> |
t.join(SHORT_DELAY_MS); |
894 |
> |
assertFalse(t.isAlive()); |
895 |
|
} |
896 |
|
|
897 |
|
/** |
898 |
|
* signalAll wakes up all threads |
899 |
|
*/ |
900 |
< |
public void testSignalAll() { |
901 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
900 |
> |
public void testSignalAll() throws InterruptedException { |
901 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
902 |
|
final Condition c = lock.writeLock().newCondition(); |
903 |
< |
Thread t1 = new Thread(new Runnable() { |
904 |
< |
public void run() { |
905 |
< |
try { |
906 |
< |
lock.writeLock().lock(); |
907 |
< |
c.await(); |
908 |
< |
lock.writeLock().unlock(); |
909 |
< |
} |
910 |
< |
catch(InterruptedException e) { |
911 |
< |
threadUnexpectedException(); |
912 |
< |
} |
913 |
< |
} |
914 |
< |
}); |
915 |
< |
|
916 |
< |
Thread t2 = new Thread(new Runnable() { |
917 |
< |
public void run() { |
918 |
< |
try { |
919 |
< |
lock.writeLock().lock(); |
920 |
< |
c.await(); |
921 |
< |
lock.writeLock().unlock(); |
922 |
< |
} |
923 |
< |
catch(InterruptedException e) { |
924 |
< |
threadUnexpectedException(); |
811 |
< |
} |
812 |
< |
} |
813 |
< |
}); |
814 |
< |
|
815 |
< |
try { |
816 |
< |
t1.start(); |
817 |
< |
t2.start(); |
818 |
< |
Thread.sleep(SHORT_DELAY_MS); |
819 |
< |
lock.writeLock().lock(); |
820 |
< |
c.signalAll(); |
821 |
< |
lock.writeLock().unlock(); |
822 |
< |
t1.join(SHORT_DELAY_MS); |
823 |
< |
t2.join(SHORT_DELAY_MS); |
824 |
< |
assertFalse(t1.isAlive()); |
825 |
< |
assertFalse(t2.isAlive()); |
826 |
< |
} |
827 |
< |
catch (Exception ex) { |
828 |
< |
unexpectedException(); |
829 |
< |
} |
903 |
> |
Thread t1 = newStartedThread(new CheckedRunnable() { |
904 |
> |
public void realRun() throws InterruptedException { |
905 |
> |
lock.writeLock().lock(); |
906 |
> |
c.await(); |
907 |
> |
lock.writeLock().unlock(); |
908 |
> |
}}); |
909 |
> |
|
910 |
> |
Thread t2 = newStartedThread(new CheckedRunnable() { |
911 |
> |
public void realRun() throws InterruptedException { |
912 |
> |
lock.writeLock().lock(); |
913 |
> |
c.await(); |
914 |
> |
lock.writeLock().unlock(); |
915 |
> |
}}); |
916 |
> |
|
917 |
> |
Thread.sleep(SHORT_DELAY_MS); |
918 |
> |
lock.writeLock().lock(); |
919 |
> |
c.signalAll(); |
920 |
> |
lock.writeLock().unlock(); |
921 |
> |
t1.join(SHORT_DELAY_MS); |
922 |
> |
t2.join(SHORT_DELAY_MS); |
923 |
> |
assertFalse(t1.isAlive()); |
924 |
> |
assertFalse(t2.isAlive()); |
925 |
|
} |
926 |
|
|
927 |
|
/** |
928 |
|
* A serialized lock deserializes as unlocked |
929 |
|
*/ |
930 |
< |
public void testSerialization() { |
930 |
> |
public void testSerialization() throws Exception { |
931 |
|
ReentrantReadWriteLock l = new ReentrantReadWriteLock(); |
932 |
|
l.readLock().lock(); |
933 |
|
l.readLock().unlock(); |
934 |
|
|
935 |
+ |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
936 |
+ |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
937 |
+ |
out.writeObject(l); |
938 |
+ |
out.close(); |
939 |
+ |
|
940 |
+ |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
941 |
+ |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
942 |
+ |
ReentrantReadWriteLock r = (ReentrantReadWriteLock) in.readObject(); |
943 |
+ |
r.readLock().lock(); |
944 |
+ |
r.readLock().unlock(); |
945 |
+ |
} |
946 |
+ |
|
947 |
+ |
/** |
948 |
+ |
* hasQueuedThreads reports whether there are waiting threads |
949 |
+ |
*/ |
950 |
+ |
public void testhasQueuedThreads() throws InterruptedException { |
951 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
952 |
+ |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
953 |
+ |
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
954 |
+ |
assertFalse(lock.hasQueuedThreads()); |
955 |
+ |
lock.writeLock().lock(); |
956 |
+ |
t1.start(); |
957 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
958 |
+ |
assertTrue(lock.hasQueuedThreads()); |
959 |
+ |
t2.start(); |
960 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
961 |
+ |
assertTrue(lock.hasQueuedThreads()); |
962 |
+ |
t1.interrupt(); |
963 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
964 |
+ |
assertTrue(lock.hasQueuedThreads()); |
965 |
+ |
lock.writeLock().unlock(); |
966 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
967 |
+ |
assertFalse(lock.hasQueuedThreads()); |
968 |
+ |
t1.join(); |
969 |
+ |
t2.join(); |
970 |
+ |
} |
971 |
+ |
|
972 |
+ |
/** |
973 |
+ |
* hasQueuedThread(null) throws NPE |
974 |
+ |
*/ |
975 |
+ |
public void testHasQueuedThreadNPE() { |
976 |
+ |
final ReentrantReadWriteLock sync = new ReentrantReadWriteLock(); |
977 |
|
try { |
978 |
< |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
979 |
< |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
980 |
< |
out.writeObject(l); |
844 |
< |
out.close(); |
845 |
< |
|
846 |
< |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
847 |
< |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
848 |
< |
ReentrantReadWriteLock r = (ReentrantReadWriteLock) in.readObject(); |
849 |
< |
r.readLock().lock(); |
850 |
< |
r.readLock().unlock(); |
851 |
< |
} catch(Exception e){ |
852 |
< |
e.printStackTrace(); |
853 |
< |
unexpectedException(); |
854 |
< |
} |
978 |
> |
sync.hasQueuedThread(null); |
979 |
> |
shouldThrow(); |
980 |
> |
} catch (NullPointerException success) {} |
981 |
|
} |
982 |
|
|
983 |
|
/** |
984 |
+ |
* hasQueuedThread reports whether a thread is queued. |
985 |
+ |
*/ |
986 |
+ |
public void testHasQueuedThread() throws InterruptedException { |
987 |
+ |
final ReentrantReadWriteLock sync = new ReentrantReadWriteLock(); |
988 |
+ |
Thread t1 = new Thread(new InterruptedLockRunnable(sync)); |
989 |
+ |
Thread t2 = new Thread(new InterruptibleLockRunnable(sync)); |
990 |
+ |
assertFalse(sync.hasQueuedThread(t1)); |
991 |
+ |
assertFalse(sync.hasQueuedThread(t2)); |
992 |
+ |
sync.writeLock().lock(); |
993 |
+ |
t1.start(); |
994 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
995 |
+ |
assertTrue(sync.hasQueuedThread(t1)); |
996 |
+ |
t2.start(); |
997 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
998 |
+ |
assertTrue(sync.hasQueuedThread(t1)); |
999 |
+ |
assertTrue(sync.hasQueuedThread(t2)); |
1000 |
+ |
t1.interrupt(); |
1001 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1002 |
+ |
assertFalse(sync.hasQueuedThread(t1)); |
1003 |
+ |
assertTrue(sync.hasQueuedThread(t2)); |
1004 |
+ |
sync.writeLock().unlock(); |
1005 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1006 |
+ |
assertFalse(sync.hasQueuedThread(t1)); |
1007 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1008 |
+ |
assertFalse(sync.hasQueuedThread(t2)); |
1009 |
+ |
t1.join(); |
1010 |
+ |
t2.join(); |
1011 |
+ |
} |
1012 |
+ |
|
1013 |
+ |
|
1014 |
+ |
/** |
1015 |
|
* getQueueLength reports number of waiting threads |
1016 |
|
*/ |
1017 |
< |
public void testGetQueueLength() { |
1018 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1017 |
> |
public void testGetQueueLength() throws InterruptedException { |
1018 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1019 |
|
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
1020 |
|
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
1021 |
< |
try { |
1022 |
< |
assertEquals(0, lock.getQueueLength()); |
1023 |
< |
lock.writeLock().lock(); |
1024 |
< |
t1.start(); |
1025 |
< |
Thread.sleep(SHORT_DELAY_MS); |
1026 |
< |
assertEquals(1, lock.getQueueLength()); |
1027 |
< |
t2.start(); |
1028 |
< |
Thread.sleep(SHORT_DELAY_MS); |
1029 |
< |
assertEquals(2, lock.getQueueLength()); |
1030 |
< |
t1.interrupt(); |
1031 |
< |
Thread.sleep(SHORT_DELAY_MS); |
1032 |
< |
assertEquals(1, lock.getQueueLength()); |
1033 |
< |
lock.writeLock().unlock(); |
1034 |
< |
Thread.sleep(SHORT_DELAY_MS); |
1035 |
< |
assertEquals(0, lock.getQueueLength()); |
1036 |
< |
t1.join(); |
1037 |
< |
t2.join(); |
881 |
< |
} catch(Exception e){ |
882 |
< |
unexpectedException(); |
883 |
< |
} |
884 |
< |
} |
1021 |
> |
assertEquals(0, lock.getQueueLength()); |
1022 |
> |
lock.writeLock().lock(); |
1023 |
> |
t1.start(); |
1024 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1025 |
> |
assertEquals(1, lock.getQueueLength()); |
1026 |
> |
t2.start(); |
1027 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1028 |
> |
assertEquals(2, lock.getQueueLength()); |
1029 |
> |
t1.interrupt(); |
1030 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1031 |
> |
assertEquals(1, lock.getQueueLength()); |
1032 |
> |
lock.writeLock().unlock(); |
1033 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1034 |
> |
assertEquals(0, lock.getQueueLength()); |
1035 |
> |
t1.join(); |
1036 |
> |
t2.join(); |
1037 |
> |
} |
1038 |
|
|
1039 |
|
/** |
1040 |
|
* getQueuedThreads includes waiting threads |
1041 |
|
*/ |
1042 |
< |
public void testGetQueuedThreads() { |
1043 |
< |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1042 |
> |
public void testGetQueuedThreads() throws InterruptedException { |
1043 |
> |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1044 |
|
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
1045 |
|
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
1046 |
+ |
assertTrue(lock.getQueuedThreads().isEmpty()); |
1047 |
+ |
lock.writeLock().lock(); |
1048 |
+ |
assertTrue(lock.getQueuedThreads().isEmpty()); |
1049 |
+ |
t1.start(); |
1050 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1051 |
+ |
assertTrue(lock.getQueuedThreads().contains(t1)); |
1052 |
+ |
t2.start(); |
1053 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1054 |
+ |
assertTrue(lock.getQueuedThreads().contains(t1)); |
1055 |
+ |
assertTrue(lock.getQueuedThreads().contains(t2)); |
1056 |
+ |
t1.interrupt(); |
1057 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1058 |
+ |
assertFalse(lock.getQueuedThreads().contains(t1)); |
1059 |
+ |
assertTrue(lock.getQueuedThreads().contains(t2)); |
1060 |
+ |
lock.writeLock().unlock(); |
1061 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1062 |
+ |
assertTrue(lock.getQueuedThreads().isEmpty()); |
1063 |
+ |
t1.join(); |
1064 |
+ |
t2.join(); |
1065 |
+ |
} |
1066 |
+ |
|
1067 |
+ |
/** |
1068 |
+ |
* hasWaiters throws NPE if null |
1069 |
+ |
*/ |
1070 |
+ |
public void testHasWaitersNPE() { |
1071 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1072 |
|
try { |
1073 |
< |
assertTrue(lock.getQueuedThreads().isEmpty()); |
1074 |
< |
lock.writeLock().lock(); |
1075 |
< |
assertTrue(lock.getQueuedThreads().isEmpty()); |
1076 |
< |
t1.start(); |
898 |
< |
Thread.sleep(SHORT_DELAY_MS); |
899 |
< |
assertTrue(lock.getQueuedThreads().contains(t1)); |
900 |
< |
t2.start(); |
901 |
< |
Thread.sleep(SHORT_DELAY_MS); |
902 |
< |
assertTrue(lock.getQueuedThreads().contains(t1)); |
903 |
< |
assertTrue(lock.getQueuedThreads().contains(t2)); |
904 |
< |
t1.interrupt(); |
905 |
< |
Thread.sleep(SHORT_DELAY_MS); |
906 |
< |
assertFalse(lock.getQueuedThreads().contains(t1)); |
907 |
< |
assertTrue(lock.getQueuedThreads().contains(t2)); |
908 |
< |
lock.writeLock().unlock(); |
909 |
< |
Thread.sleep(SHORT_DELAY_MS); |
910 |
< |
assertTrue(lock.getQueuedThreads().isEmpty()); |
911 |
< |
t1.join(); |
912 |
< |
t2.join(); |
913 |
< |
} catch(Exception e){ |
914 |
< |
unexpectedException(); |
915 |
< |
} |
916 |
< |
} |
1073 |
> |
lock.hasWaiters(null); |
1074 |
> |
shouldThrow(); |
1075 |
> |
} catch (NullPointerException success) {} |
1076 |
> |
} |
1077 |
|
|
1078 |
|
/** |
1079 |
< |
* hasWaiters returns true when a thread is waiting, else false |
1079 |
> |
* getWaitQueueLength throws NPE if null |
1080 |
|
*/ |
1081 |
< |
public void testHasWaiters() { |
1082 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1083 |
< |
final AbstractReentrantLock.ConditionObject c = (AbstractReentrantLock.ConditionObject)(lock.writeLock().newCondition()); |
1084 |
< |
Thread t = new Thread(new Runnable() { |
1085 |
< |
public void run() { |
1086 |
< |
try { |
1087 |
< |
lock.writeLock().lock(); |
1088 |
< |
threadAssertFalse(c.hasWaiters()); |
929 |
< |
threadAssertEquals(0, c.getWaitQueueLength()); |
930 |
< |
c.await(); |
931 |
< |
lock.writeLock().unlock(); |
932 |
< |
} |
933 |
< |
catch(InterruptedException e) { |
934 |
< |
threadUnexpectedException(); |
935 |
< |
} |
936 |
< |
} |
937 |
< |
}); |
1081 |
> |
public void testGetWaitQueueLengthNPE() { |
1082 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1083 |
> |
try { |
1084 |
> |
lock.getWaitQueueLength(null); |
1085 |
> |
shouldThrow(); |
1086 |
> |
} catch (NullPointerException success) {} |
1087 |
> |
} |
1088 |
> |
|
1089 |
|
|
1090 |
+ |
/** |
1091 |
+ |
* getWaitingThreads throws NPE if null |
1092 |
+ |
*/ |
1093 |
+ |
public void testGetWaitingThreadsNPE() { |
1094 |
+ |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1095 |
|
try { |
1096 |
< |
t.start(); |
1097 |
< |
Thread.sleep(SHORT_DELAY_MS); |
1098 |
< |
lock.writeLock().lock(); |
943 |
< |
assertTrue(c.hasWaiters()); |
944 |
< |
assertEquals(1, c.getWaitQueueLength()); |
945 |
< |
c.signal(); |
946 |
< |
lock.writeLock().unlock(); |
947 |
< |
Thread.sleep(SHORT_DELAY_MS); |
948 |
< |
lock.writeLock().lock(); |
949 |
< |
assertFalse(c.hasWaiters()); |
950 |
< |
assertEquals(0, c.getWaitQueueLength()); |
951 |
< |
lock.writeLock().unlock(); |
952 |
< |
t.join(SHORT_DELAY_MS); |
953 |
< |
assertFalse(t.isAlive()); |
954 |
< |
} |
955 |
< |
catch (Exception ex) { |
956 |
< |
unexpectedException(); |
957 |
< |
} |
1096 |
> |
lock.getWaitingThreads(null); |
1097 |
> |
shouldThrow(); |
1098 |
> |
} catch (NullPointerException success) {} |
1099 |
|
} |
1100 |
|
|
1101 |
|
/** |
1102 |
< |
* getWaitQueueLength returns number of waiting threads |
1102 |
> |
* hasWaiters throws IAE if not owned |
1103 |
|
*/ |
1104 |
< |
public void testGetWaitQueueLength() { |
1105 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1106 |
< |
final AbstractReentrantLock.ConditionObject c = (AbstractReentrantLock.ConditionObject)(lock.writeLock().newCondition()); |
1107 |
< |
Thread t1 = new Thread(new Runnable() { |
1108 |
< |
public void run() { |
1109 |
< |
try { |
1110 |
< |
lock.writeLock().lock(); |
1111 |
< |
threadAssertFalse(c.hasWaiters()); |
1112 |
< |
threadAssertEquals(0, c.getWaitQueueLength()); |
972 |
< |
c.await(); |
973 |
< |
lock.writeLock().unlock(); |
974 |
< |
} |
975 |
< |
catch(InterruptedException e) { |
976 |
< |
threadUnexpectedException(); |
977 |
< |
} |
978 |
< |
} |
979 |
< |
}); |
980 |
< |
|
981 |
< |
Thread t2 = new Thread(new Runnable() { |
982 |
< |
public void run() { |
983 |
< |
try { |
984 |
< |
lock.writeLock().lock(); |
985 |
< |
threadAssertTrue(c.hasWaiters()); |
986 |
< |
threadAssertEquals(1, c.getWaitQueueLength()); |
987 |
< |
c.await(); |
988 |
< |
lock.writeLock().unlock(); |
989 |
< |
} |
990 |
< |
catch(InterruptedException e) { |
991 |
< |
threadUnexpectedException(); |
992 |
< |
} |
993 |
< |
} |
994 |
< |
}); |
1104 |
> |
public void testHasWaitersIAE() { |
1105 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1106 |
> |
final Condition c = lock.writeLock().newCondition(); |
1107 |
> |
final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock(); |
1108 |
> |
try { |
1109 |
> |
lock2.hasWaiters(c); |
1110 |
> |
shouldThrow(); |
1111 |
> |
} catch (IllegalArgumentException success) {} |
1112 |
> |
} |
1113 |
|
|
1114 |
+ |
/** |
1115 |
+ |
* hasWaiters throws IMSE if not locked |
1116 |
+ |
*/ |
1117 |
+ |
public void testHasWaitersIMSE() { |
1118 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1119 |
+ |
final Condition c = lock.writeLock().newCondition(); |
1120 |
|
try { |
1121 |
< |
t1.start(); |
1122 |
< |
Thread.sleep(SHORT_DELAY_MS); |
1123 |
< |
t2.start(); |
1000 |
< |
Thread.sleep(SHORT_DELAY_MS); |
1001 |
< |
lock.writeLock().lock(); |
1002 |
< |
assertTrue(c.hasWaiters()); |
1003 |
< |
assertEquals(2, c.getWaitQueueLength()); |
1004 |
< |
c.signalAll(); |
1005 |
< |
lock.writeLock().unlock(); |
1006 |
< |
Thread.sleep(SHORT_DELAY_MS); |
1007 |
< |
lock.writeLock().lock(); |
1008 |
< |
assertFalse(c.hasWaiters()); |
1009 |
< |
assertEquals(0, c.getWaitQueueLength()); |
1010 |
< |
lock.writeLock().unlock(); |
1011 |
< |
t1.join(SHORT_DELAY_MS); |
1012 |
< |
t2.join(SHORT_DELAY_MS); |
1013 |
< |
assertFalse(t1.isAlive()); |
1014 |
< |
assertFalse(t2.isAlive()); |
1015 |
< |
} |
1016 |
< |
catch (Exception ex) { |
1017 |
< |
unexpectedException(); |
1018 |
< |
} |
1121 |
> |
lock.hasWaiters(c); |
1122 |
> |
shouldThrow(); |
1123 |
> |
} catch (IllegalMonitorStateException success) {} |
1124 |
|
} |
1125 |
|
|
1126 |
+ |
|
1127 |
|
/** |
1128 |
< |
* getWaitingThreads returns only and all waiting threads |
1128 |
> |
* getWaitQueueLength throws IAE if not owned |
1129 |
|
*/ |
1130 |
< |
public void testGetWaitingThreads() { |
1131 |
< |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1132 |
< |
final PublicReentrantReadWriteLock.PublicCondition c = (PublicReentrantReadWriteLock.PublicCondition)lock.newCondition(); |
1133 |
< |
Thread t1 = new Thread(new Runnable() { |
1134 |
< |
public void run() { |
1135 |
< |
try { |
1136 |
< |
lock.writeLock().lock(); |
1137 |
< |
threadAssertTrue(c.getWaitingThreads().isEmpty()); |
1138 |
< |
c.await(); |
1033 |
< |
lock.writeLock().unlock(); |
1034 |
< |
} |
1035 |
< |
catch(InterruptedException e) { |
1036 |
< |
threadUnexpectedException(); |
1037 |
< |
} |
1038 |
< |
} |
1039 |
< |
}); |
1040 |
< |
|
1041 |
< |
Thread t2 = new Thread(new Runnable() { |
1042 |
< |
public void run() { |
1043 |
< |
try { |
1044 |
< |
lock.writeLock().lock(); |
1045 |
< |
threadAssertFalse(c.getWaitingThreads().isEmpty()); |
1046 |
< |
c.await(); |
1047 |
< |
lock.writeLock().unlock(); |
1048 |
< |
} |
1049 |
< |
catch(InterruptedException e) { |
1050 |
< |
threadUnexpectedException(); |
1051 |
< |
} |
1052 |
< |
} |
1053 |
< |
}); |
1130 |
> |
public void testGetWaitQueueLengthIAE() { |
1131 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1132 |
> |
final Condition c = lock.writeLock().newCondition(); |
1133 |
> |
final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock(); |
1134 |
> |
try { |
1135 |
> |
lock2.getWaitQueueLength(c); |
1136 |
> |
shouldThrow(); |
1137 |
> |
} catch (IllegalArgumentException success) {} |
1138 |
> |
} |
1139 |
|
|
1140 |
+ |
/** |
1141 |
+ |
* getWaitQueueLength throws IMSE if not locked |
1142 |
+ |
*/ |
1143 |
+ |
public void testGetWaitQueueLengthIMSE() { |
1144 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1145 |
+ |
final Condition c = lock.writeLock().newCondition(); |
1146 |
|
try { |
1147 |
< |
lock.writeLock().lock(); |
1148 |
< |
assertTrue(c.getWaitingThreads().isEmpty()); |
1149 |
< |
lock.writeLock().unlock(); |
1150 |
< |
t1.start(); |
1151 |
< |
Thread.sleep(SHORT_DELAY_MS); |
1152 |
< |
t2.start(); |
1153 |
< |
Thread.sleep(SHORT_DELAY_MS); |
1154 |
< |
lock.writeLock().lock(); |
1155 |
< |
assertTrue(c.hasWaiters()); |
1156 |
< |
assertTrue(c.getWaitingThreads().contains(t1)); |
1157 |
< |
assertTrue(c.getWaitingThreads().contains(t2)); |
1158 |
< |
c.signalAll(); |
1159 |
< |
lock.writeLock().unlock(); |
1160 |
< |
Thread.sleep(SHORT_DELAY_MS); |
1161 |
< |
lock.writeLock().lock(); |
1162 |
< |
assertFalse(c.hasWaiters()); |
1163 |
< |
assertTrue(c.getWaitingThreads().isEmpty()); |
1164 |
< |
lock.writeLock().unlock(); |
1165 |
< |
t1.join(SHORT_DELAY_MS); |
1166 |
< |
t2.join(SHORT_DELAY_MS); |
1167 |
< |
assertFalse(t1.isAlive()); |
1168 |
< |
assertFalse(t2.isAlive()); |
1169 |
< |
} |
1170 |
< |
catch (Exception ex) { |
1171 |
< |
unexpectedException(); |
1172 |
< |
} |
1147 |
> |
lock.getWaitQueueLength(c); |
1148 |
> |
shouldThrow(); |
1149 |
> |
} catch (IllegalMonitorStateException success) {} |
1150 |
> |
} |
1151 |
> |
|
1152 |
> |
|
1153 |
> |
/** |
1154 |
> |
* getWaitingThreads throws IAE if not owned |
1155 |
> |
*/ |
1156 |
> |
public void testGetWaitingThreadsIAE() { |
1157 |
> |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1158 |
> |
final Condition c = lock.writeLock().newCondition(); |
1159 |
> |
final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock(); |
1160 |
> |
try { |
1161 |
> |
lock2.getWaitingThreads(c); |
1162 |
> |
shouldThrow(); |
1163 |
> |
} catch (IllegalArgumentException success) {} |
1164 |
> |
} |
1165 |
> |
|
1166 |
> |
/** |
1167 |
> |
* getWaitingThreads throws IMSE if not locked |
1168 |
> |
*/ |
1169 |
> |
public void testGetWaitingThreadsIMSE() { |
1170 |
> |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1171 |
> |
final Condition c = lock.writeLock().newCondition(); |
1172 |
> |
try { |
1173 |
> |
lock.getWaitingThreads(c); |
1174 |
> |
shouldThrow(); |
1175 |
> |
} catch (IllegalMonitorStateException success) {} |
1176 |
> |
} |
1177 |
> |
|
1178 |
> |
|
1179 |
> |
/** |
1180 |
> |
* hasWaiters returns true when a thread is waiting, else false |
1181 |
> |
*/ |
1182 |
> |
public void testHasWaiters() throws InterruptedException { |
1183 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1184 |
> |
final Condition c = lock.writeLock().newCondition(); |
1185 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
1186 |
> |
public void realRun() throws InterruptedException { |
1187 |
> |
lock.writeLock().lock(); |
1188 |
> |
assertFalse(lock.hasWaiters(c)); |
1189 |
> |
assertEquals(0, lock.getWaitQueueLength(c)); |
1190 |
> |
c.await(); |
1191 |
> |
lock.writeLock().unlock(); |
1192 |
> |
}}); |
1193 |
> |
|
1194 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1195 |
> |
lock.writeLock().lock(); |
1196 |
> |
assertTrue(lock.hasWaiters(c)); |
1197 |
> |
assertEquals(1, lock.getWaitQueueLength(c)); |
1198 |
> |
c.signal(); |
1199 |
> |
lock.writeLock().unlock(); |
1200 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1201 |
> |
lock.writeLock().lock(); |
1202 |
> |
assertFalse(lock.hasWaiters(c)); |
1203 |
> |
assertEquals(0, lock.getWaitQueueLength(c)); |
1204 |
> |
lock.writeLock().unlock(); |
1205 |
> |
t.join(SHORT_DELAY_MS); |
1206 |
> |
assertFalse(t.isAlive()); |
1207 |
> |
} |
1208 |
> |
|
1209 |
> |
/** |
1210 |
> |
* getWaitQueueLength returns number of waiting threads |
1211 |
> |
*/ |
1212 |
> |
public void testGetWaitQueueLength() throws InterruptedException { |
1213 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1214 |
> |
final Condition c = lock.writeLock().newCondition(); |
1215 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
1216 |
> |
public void realRun() throws InterruptedException { |
1217 |
> |
lock.writeLock().lock(); |
1218 |
> |
assertFalse(lock.hasWaiters(c)); |
1219 |
> |
assertEquals(0, lock.getWaitQueueLength(c)); |
1220 |
> |
c.await(); |
1221 |
> |
lock.writeLock().unlock(); |
1222 |
> |
}}); |
1223 |
> |
|
1224 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1225 |
> |
lock.writeLock().lock(); |
1226 |
> |
assertTrue(lock.hasWaiters(c)); |
1227 |
> |
assertEquals(1, lock.getWaitQueueLength(c)); |
1228 |
> |
c.signal(); |
1229 |
> |
lock.writeLock().unlock(); |
1230 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1231 |
> |
lock.writeLock().lock(); |
1232 |
> |
assertFalse(lock.hasWaiters(c)); |
1233 |
> |
assertEquals(0, lock.getWaitQueueLength(c)); |
1234 |
> |
lock.writeLock().unlock(); |
1235 |
> |
t.join(SHORT_DELAY_MS); |
1236 |
> |
assertFalse(t.isAlive()); |
1237 |
> |
} |
1238 |
> |
|
1239 |
> |
|
1240 |
> |
/** |
1241 |
> |
* getWaitingThreads returns only and all waiting threads |
1242 |
> |
*/ |
1243 |
> |
public void testGetWaitingThreads() throws InterruptedException { |
1244 |
> |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1245 |
> |
final Condition c = lock.writeLock().newCondition(); |
1246 |
> |
Thread t1 = new Thread(new CheckedRunnable() { |
1247 |
> |
public void realRun() throws InterruptedException { |
1248 |
> |
lock.writeLock().lock(); |
1249 |
> |
assertTrue(lock.getWaitingThreads(c).isEmpty()); |
1250 |
> |
c.await(); |
1251 |
> |
lock.writeLock().unlock(); |
1252 |
> |
}}); |
1253 |
> |
|
1254 |
> |
Thread t2 = new Thread(new CheckedRunnable() { |
1255 |
> |
public void realRun() throws InterruptedException { |
1256 |
> |
lock.writeLock().lock(); |
1257 |
> |
assertFalse(lock.getWaitingThreads(c).isEmpty()); |
1258 |
> |
c.await(); |
1259 |
> |
lock.writeLock().unlock(); |
1260 |
> |
}}); |
1261 |
> |
|
1262 |
> |
lock.writeLock().lock(); |
1263 |
> |
assertTrue(lock.getWaitingThreads(c).isEmpty()); |
1264 |
> |
lock.writeLock().unlock(); |
1265 |
> |
t1.start(); |
1266 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1267 |
> |
t2.start(); |
1268 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1269 |
> |
lock.writeLock().lock(); |
1270 |
> |
assertTrue(lock.hasWaiters(c)); |
1271 |
> |
assertTrue(lock.getWaitingThreads(c).contains(t1)); |
1272 |
> |
assertTrue(lock.getWaitingThreads(c).contains(t2)); |
1273 |
> |
c.signalAll(); |
1274 |
> |
lock.writeLock().unlock(); |
1275 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1276 |
> |
lock.writeLock().lock(); |
1277 |
> |
assertFalse(lock.hasWaiters(c)); |
1278 |
> |
assertTrue(lock.getWaitingThreads(c).isEmpty()); |
1279 |
> |
lock.writeLock().unlock(); |
1280 |
> |
t1.join(SHORT_DELAY_MS); |
1281 |
> |
t2.join(SHORT_DELAY_MS); |
1282 |
> |
assertFalse(t1.isAlive()); |
1283 |
> |
assertFalse(t2.isAlive()); |
1284 |
> |
} |
1285 |
> |
|
1286 |
> |
/** |
1287 |
> |
* toString indicates current lock state |
1288 |
> |
*/ |
1289 |
> |
public void testToString() { |
1290 |
> |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1291 |
> |
String us = lock.toString(); |
1292 |
> |
assertTrue(us.indexOf("Write locks = 0") >= 0); |
1293 |
> |
assertTrue(us.indexOf("Read locks = 0") >= 0); |
1294 |
> |
lock.writeLock().lock(); |
1295 |
> |
String ws = lock.toString(); |
1296 |
> |
assertTrue(ws.indexOf("Write locks = 1") >= 0); |
1297 |
> |
assertTrue(ws.indexOf("Read locks = 0") >= 0); |
1298 |
> |
lock.writeLock().unlock(); |
1299 |
> |
lock.readLock().lock(); |
1300 |
> |
lock.readLock().lock(); |
1301 |
> |
String rs = lock.toString(); |
1302 |
> |
assertTrue(rs.indexOf("Write locks = 0") >= 0); |
1303 |
> |
assertTrue(rs.indexOf("Read locks = 2") >= 0); |
1304 |
> |
} |
1305 |
> |
|
1306 |
> |
/** |
1307 |
> |
* readLock.toString indicates current lock state |
1308 |
> |
*/ |
1309 |
> |
public void testReadLockToString() { |
1310 |
> |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1311 |
> |
String us = lock.readLock().toString(); |
1312 |
> |
assertTrue(us.indexOf("Read locks = 0") >= 0); |
1313 |
> |
lock.readLock().lock(); |
1314 |
> |
lock.readLock().lock(); |
1315 |
> |
String rs = lock.readLock().toString(); |
1316 |
> |
assertTrue(rs.indexOf("Read locks = 2") >= 0); |
1317 |
> |
} |
1318 |
> |
|
1319 |
> |
/** |
1320 |
> |
* writeLock.toString indicates current lock state |
1321 |
> |
*/ |
1322 |
> |
public void testWriteLockToString() { |
1323 |
> |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1324 |
> |
String us = lock.writeLock().toString(); |
1325 |
> |
assertTrue(us.indexOf("Unlocked") >= 0); |
1326 |
> |
lock.writeLock().lock(); |
1327 |
> |
String ls = lock.writeLock().toString(); |
1328 |
> |
assertTrue(ls.indexOf("Locked") >= 0); |
1329 |
|
} |
1330 |
|
|
1331 |
|
} |