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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 extends CheckedRunnable { |
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final ReentrantReadWriteLock lock; |
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InterruptibleLockRunnable(ReentrantReadWriteLock l) { lock = l; } |
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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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static int HOLD_COUNT_TEST_LIMIT = 20; |
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|
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/* |
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* Unlocks an unlocked lock, throws Illegal Monitor State |
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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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public void testIllegalMonitorStateException(){ |
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ReentrantReadWriteLock rl = new ReentrantReadWriteLock(); |
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try{ |
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rl.writeLock().unlock(); |
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fail("Should of thown Illegal Monitor State Exception"); |
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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 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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}catch(IllegalMonitorStateException success){} |
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/** |
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* Subclass to expose protected methods |
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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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} |
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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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|
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/** |
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* Releases lock, checking that it had a hold count of 1. |
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*/ |
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void releaseLock(ReentrantReadWriteLock.WriteLock lock) { |
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assertTrue(lock.isHeldByCurrentThread()); |
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lock.unlock(); |
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assertFalse(lock.isHeldByCurrentThread()); |
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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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assertFalse(rl.isFair()); |
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assertFalse(rl.isWriteLocked()); |
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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.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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public void testInterruptedException(){ |
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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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threadFail("should throw"); |
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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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lock.writeLock().unlock(); |
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t.join(); |
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} catch(Exception e){ |
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fail("unexpected exception"); |
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} |
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} |
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|
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public void testInterruptedException2(){ |
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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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threadFail("should throw"); |
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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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lock.writeLock().unlock(); |
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t.join(); |
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} catch(Exception e){ |
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fail("unexpected exception"); |
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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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rl.writeLock().lock(); |
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assertTrue(rl.isWriteLocked()); |
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assertTrue(rl.isWriteLockedByCurrentThread()); |
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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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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.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.getReadLockCount()); |
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} |
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|
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public void testInterruptedException3(){ |
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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(){ |
118 |
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try{ |
119 |
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lock.readLock().lockInterruptibly(); |
120 |
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threadFail("should throw"); |
121 |
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}catch(InterruptedException success){} |
122 |
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} |
123 |
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}); |
124 |
< |
try { |
125 |
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t.start(); |
126 |
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t.interrupt(); |
127 |
< |
lock.writeLock().unlock(); |
128 |
< |
t.join(); |
129 |
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} catch(Exception e){ |
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fail("unexpected exception"); |
131 |
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} |
132 |
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} |
133 |
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|
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public void testInterruptedException4(){ |
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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.readLock().tryLock(1000,TimeUnit.MILLISECONDS); |
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threadFail("should throw"); |
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}catch(InterruptedException success){} |
110 |
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} |
111 |
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}); |
112 |
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try { |
113 |
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t.start(); |
114 |
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t.interrupt(); |
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t.join(); |
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} catch(Exception e){ |
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fail("unexpected exception"); |
118 |
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} |
113 |
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|
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/** |
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* locking an unlocked fair lock succeeds |
116 |
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*/ |
117 |
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public void testFairLock() { |
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ReentrantReadWriteLock rl = new ReentrantReadWriteLock(true); |
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rl.writeLock().lock(); |
120 |
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assertTrue(rl.isWriteLocked()); |
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assertTrue(rl.isWriteLockedByCurrentThread()); |
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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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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.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.getReadLockCount()); |
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} |
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|
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|
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public void testTryLockWhenLocked() { |
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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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threadAssertFalse(lock.writeLock().tryLock()); |
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} |
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}); |
148 |
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try { |
131 |
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t.start(); |
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t.join(); |
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/** |
140 |
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* getWriteHoldCount returns number of recursive holds |
141 |
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*/ |
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public void testGetWriteHoldCount() { |
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ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
144 |
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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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} catch(Exception e){ |
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fail("unexpected exception"); |
150 |
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assertEquals(i-1,lock.getWriteHoldCount()); |
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} |
152 |
< |
} |
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} |
153 |
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|
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public void testTryLockWhenLocked2() { |
155 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
156 |
< |
lock.writeLock().lock(); |
157 |
< |
Thread t = new Thread(new Runnable() { |
158 |
< |
public void run(){ |
159 |
< |
threadAssertFalse(lock.readLock().tryLock()); |
160 |
< |
} |
161 |
< |
}); |
162 |
< |
try { |
163 |
< |
t.start(); |
149 |
< |
t.join(); |
154 |
> |
/** |
155 |
> |
* WriteLock.getHoldCount returns number of recursive holds |
156 |
> |
*/ |
157 |
> |
public void testGetHoldCount() { |
158 |
> |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
159 |
> |
for (int i = 1; i <= SIZE; i++) { |
160 |
> |
lock.writeLock().lock(); |
161 |
> |
assertEquals(i,lock.writeLock().getHoldCount()); |
162 |
> |
} |
163 |
> |
for (int i = SIZE; i > 0; i--) { |
164 |
|
lock.writeLock().unlock(); |
165 |
< |
} catch(Exception e){ |
152 |
< |
fail("unexpected exception"); |
165 |
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assertEquals(i-1,lock.writeLock().getHoldCount()); |
166 |
|
} |
167 |
< |
} |
167 |
> |
} |
168 |
|
|
169 |
< |
public void testMultipleReadLocks() { |
170 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
171 |
< |
lock.readLock().lock(); |
172 |
< |
Thread t = new Thread(new Runnable() { |
173 |
< |
public void run(){ |
174 |
< |
threadAssertTrue(lock.readLock().tryLock()); |
175 |
< |
lock.readLock().unlock(); |
176 |
< |
} |
164 |
< |
}); |
165 |
< |
try { |
166 |
< |
t.start(); |
167 |
< |
t.join(); |
168 |
< |
lock.readLock().unlock(); |
169 |
< |
} catch(Exception e){ |
170 |
< |
fail("unexpected exception"); |
169 |
> |
/** |
170 |
> |
* getReadHoldCount returns number of recursive holds |
171 |
> |
*/ |
172 |
> |
public void testGetReadHoldCount() { |
173 |
> |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
174 |
> |
for (int i = 1; i <= SIZE; i++) { |
175 |
> |
lock.readLock().lock(); |
176 |
> |
assertEquals(i,lock.getReadHoldCount()); |
177 |
|
} |
178 |
< |
} |
173 |
< |
|
174 |
< |
public void testWriteAfterMultipleReadLocks() { |
175 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
176 |
< |
lock.readLock().lock(); |
177 |
< |
Thread t1 = new Thread(new Runnable() { |
178 |
< |
public void run(){ |
179 |
< |
lock.readLock().lock(); |
180 |
< |
lock.readLock().unlock(); |
181 |
< |
} |
182 |
< |
}); |
183 |
< |
Thread t2 = new Thread(new Runnable() { |
184 |
< |
public void run(){ |
185 |
< |
lock.writeLock().lock(); |
186 |
< |
lock.writeLock().unlock(); |
187 |
< |
} |
188 |
< |
}); |
189 |
< |
|
190 |
< |
try { |
191 |
< |
t1.start(); |
192 |
< |
t2.start(); |
193 |
< |
Thread.sleep(SHORT_DELAY_MS); |
194 |
< |
lock.readLock().unlock(); |
195 |
< |
t1.join(MEDIUM_DELAY_MS); |
196 |
< |
t2.join(MEDIUM_DELAY_MS); |
197 |
< |
assertTrue(!t1.isAlive()); |
198 |
< |
assertTrue(!t2.isAlive()); |
199 |
< |
|
200 |
< |
} catch(Exception e){ |
201 |
< |
fail("unexpected exception"); |
202 |
< |
} |
203 |
< |
} |
204 |
< |
|
205 |
< |
public void testReadAfterWriteLock() { |
206 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
207 |
< |
lock.writeLock().lock(); |
208 |
< |
Thread t1 = new Thread(new Runnable() { |
209 |
< |
public void run(){ |
210 |
< |
lock.readLock().lock(); |
211 |
< |
lock.readLock().unlock(); |
212 |
< |
} |
213 |
< |
}); |
214 |
< |
Thread t2 = new Thread(new Runnable() { |
215 |
< |
public void run(){ |
216 |
< |
lock.readLock().lock(); |
217 |
< |
lock.readLock().unlock(); |
218 |
< |
} |
219 |
< |
}); |
220 |
< |
|
221 |
< |
try { |
222 |
< |
t1.start(); |
223 |
< |
t2.start(); |
224 |
< |
Thread.sleep(SHORT_DELAY_MS); |
225 |
< |
lock.writeLock().unlock(); |
226 |
< |
t1.join(MEDIUM_DELAY_MS); |
227 |
< |
t2.join(MEDIUM_DELAY_MS); |
228 |
< |
assertTrue(!t1.isAlive()); |
229 |
< |
assertTrue(!t2.isAlive()); |
230 |
< |
|
231 |
< |
} catch(Exception e){ |
232 |
< |
fail("unexpected exception"); |
233 |
< |
} |
234 |
< |
} |
235 |
< |
|
236 |
< |
|
237 |
< |
public void testTryLockWhenReadLocked() { |
238 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
239 |
< |
lock.readLock().lock(); |
240 |
< |
Thread t = new Thread(new Runnable() { |
241 |
< |
public void run(){ |
242 |
< |
threadAssertTrue(lock.readLock().tryLock()); |
243 |
< |
lock.readLock().unlock(); |
244 |
< |
} |
245 |
< |
}); |
246 |
< |
try { |
247 |
< |
t.start(); |
248 |
< |
t.join(); |
178 |
> |
for (int i = SIZE; i > 0; i--) { |
179 |
|
lock.readLock().unlock(); |
180 |
< |
} catch(Exception e){ |
251 |
< |
fail("unexpected exception"); |
180 |
> |
assertEquals(i-1,lock.getReadHoldCount()); |
181 |
|
} |
182 |
< |
} |
182 |
> |
} |
183 |
|
|
255 |
– |
|
184 |
|
|
185 |
< |
public void testWriteTryLockWhenReadLocked() { |
186 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
187 |
< |
lock.readLock().lock(); |
188 |
< |
Thread t = new Thread(new Runnable() { |
189 |
< |
public void run(){ |
262 |
< |
threadAssertFalse(lock.writeLock().tryLock()); |
263 |
< |
} |
264 |
< |
}); |
185 |
> |
/** |
186 |
> |
* write-unlocking an unlocked lock throws IllegalMonitorStateException |
187 |
> |
*/ |
188 |
> |
public void testUnlock_IllegalMonitorStateException() { |
189 |
> |
ReentrantReadWriteLock rl = new ReentrantReadWriteLock(); |
190 |
|
try { |
191 |
< |
t.start(); |
192 |
< |
t.join(); |
193 |
< |
lock.readLock().unlock(); |
194 |
< |
} catch(Exception e){ |
270 |
< |
fail("unexpected exception"); |
271 |
< |
} |
272 |
< |
} |
191 |
> |
rl.writeLock().unlock(); |
192 |
> |
shouldThrow(); |
193 |
> |
} catch (IllegalMonitorStateException success) {} |
194 |
> |
} |
195 |
|
|
274 |
– |
|
196 |
|
|
197 |
< |
public void testTryLock_Timeout(){ |
198 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
199 |
< |
lock.writeLock().lock(); |
200 |
< |
Thread t = new Thread(new Runnable() { |
201 |
< |
public void run(){ |
202 |
< |
try { |
203 |
< |
threadAssertFalse(lock.writeLock().tryLock(1, TimeUnit.MILLISECONDS)); |
204 |
< |
} catch (Exception ex) { |
205 |
< |
threadFail("unexpected exception"); |
206 |
< |
} |
207 |
< |
} |
208 |
< |
}); |
209 |
< |
try { |
210 |
< |
t.start(); |
211 |
< |
t.join(); |
212 |
< |
lock.writeLock().unlock(); |
292 |
< |
} catch(Exception e){ |
293 |
< |
fail("unexpected exception"); |
294 |
< |
} |
295 |
< |
} |
197 |
> |
/** |
198 |
> |
* write-lockInterruptibly is interruptible |
199 |
> |
*/ |
200 |
> |
public void testWriteLockInterruptibly_Interrupted() throws Exception { |
201 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
202 |
> |
lock.writeLock().lock(); |
203 |
> |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
204 |
> |
public void realRun() throws InterruptedException { |
205 |
> |
lock.writeLock().lockInterruptibly(); |
206 |
> |
}}); |
207 |
> |
|
208 |
> |
Thread.sleep(SHORT_DELAY_MS); |
209 |
> |
t.interrupt(); |
210 |
> |
t.join(); |
211 |
> |
releaseLock(lock.writeLock()); |
212 |
> |
} |
213 |
|
|
214 |
< |
public void testTryLock_Timeout2(){ |
215 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
216 |
< |
lock.writeLock().lock(); |
217 |
< |
Thread t = new Thread(new Runnable() { |
218 |
< |
public void run(){ |
219 |
< |
try { |
220 |
< |
threadAssertFalse(lock.readLock().tryLock(1, TimeUnit.MILLISECONDS)); |
221 |
< |
} catch (Exception ex) { |
222 |
< |
threadFail("unexpected exception"); |
223 |
< |
} |
224 |
< |
} |
225 |
< |
}); |
226 |
< |
try { |
227 |
< |
t.start(); |
228 |
< |
t.join(); |
229 |
< |
lock.writeLock().unlock(); |
313 |
< |
} catch(Exception e){ |
314 |
< |
fail("unexpected exception"); |
315 |
< |
} |
316 |
< |
} |
214 |
> |
/** |
215 |
> |
* timed write-tryLock is interruptible |
216 |
> |
*/ |
217 |
> |
public void testWriteTryLock_Interrupted() throws InterruptedException { |
218 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
219 |
> |
lock.writeLock().lock(); |
220 |
> |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
221 |
> |
public void realRun() throws InterruptedException { |
222 |
> |
lock.writeLock().tryLock(SMALL_DELAY_MS, MILLISECONDS); |
223 |
> |
}}); |
224 |
> |
|
225 |
> |
Thread.sleep(SHORT_DELAY_MS); |
226 |
> |
t.interrupt(); |
227 |
> |
t.join(); |
228 |
> |
releaseLock(lock.writeLock()); |
229 |
> |
} |
230 |
|
|
231 |
+ |
/** |
232 |
+ |
* read-lockInterruptibly is interruptible |
233 |
+ |
*/ |
234 |
+ |
public void testReadLockInterruptibly_Interrupted() throws InterruptedException { |
235 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
236 |
+ |
lock.writeLock().lock(); |
237 |
+ |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
238 |
+ |
public void realRun() throws InterruptedException { |
239 |
+ |
lock.readLock().lockInterruptibly(); |
240 |
+ |
}}); |
241 |
+ |
|
242 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
243 |
+ |
t.interrupt(); |
244 |
+ |
t.join(); |
245 |
+ |
releaseLock(lock.writeLock()); |
246 |
+ |
} |
247 |
|
|
248 |
< |
public void testLockInterruptibly() { |
249 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
250 |
< |
try { |
251 |
< |
lock.writeLock().lockInterruptibly(); |
252 |
< |
} catch(Exception e) { |
253 |
< |
fail("unexpected exception"); |
254 |
< |
} |
255 |
< |
Thread t = new Thread(new Runnable() { |
256 |
< |
public void run() { |
257 |
< |
try { |
258 |
< |
lock.writeLock().lockInterruptibly(); |
259 |
< |
threadFail("should throw"); |
260 |
< |
} |
261 |
< |
catch(InterruptedException success) { |
262 |
< |
} |
334 |
< |
} |
335 |
< |
}); |
336 |
< |
try { |
337 |
< |
t.start(); |
338 |
< |
t.interrupt(); |
339 |
< |
t.join(); |
340 |
< |
lock.writeLock().unlock(); |
341 |
< |
} catch(Exception e){ |
342 |
< |
fail("unexpected exception"); |
343 |
< |
} |
248 |
> |
/** |
249 |
> |
* timed read-tryLock is interruptible |
250 |
> |
*/ |
251 |
> |
public void testReadTryLock_Interrupted() throws InterruptedException { |
252 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
253 |
> |
lock.writeLock().lock(); |
254 |
> |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
255 |
> |
public void realRun() throws InterruptedException { |
256 |
> |
lock.readLock().tryLock(LONG_DELAY_MS, MILLISECONDS); |
257 |
> |
}}); |
258 |
> |
|
259 |
> |
Thread.sleep(SHORT_DELAY_MS); |
260 |
> |
t.interrupt(); |
261 |
> |
t.join(); |
262 |
> |
releaseLock(lock.writeLock()); |
263 |
|
} |
264 |
|
|
265 |
< |
public void testLockInterruptibly2() { |
266 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
267 |
< |
try { |
268 |
< |
lock.writeLock().lockInterruptibly(); |
269 |
< |
} catch(Exception e) { |
270 |
< |
fail("unexpected exception"); |
271 |
< |
} |
272 |
< |
Thread t = new Thread(new Runnable() { |
273 |
< |
public void run() { |
274 |
< |
try { |
275 |
< |
lock.readLock().lockInterruptibly(); |
276 |
< |
threadFail("should throw"); |
277 |
< |
} |
278 |
< |
catch(InterruptedException success) { |
279 |
< |
} |
280 |
< |
} |
281 |
< |
}); |
282 |
< |
try { |
283 |
< |
t.start(); |
284 |
< |
t.interrupt(); |
285 |
< |
t.join(); |
286 |
< |
lock.writeLock().unlock(); |
287 |
< |
} catch(Exception e){ |
288 |
< |
fail("unexpected exception"); |
289 |
< |
} |
265 |
> |
|
266 |
> |
/** |
267 |
> |
* write-tryLock fails if locked |
268 |
> |
*/ |
269 |
> |
public void testWriteTryLockWhenLocked() throws InterruptedException { |
270 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
271 |
> |
lock.writeLock().lock(); |
272 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
273 |
> |
public void realRun() { |
274 |
> |
assertFalse(lock.writeLock().tryLock()); |
275 |
> |
}}); |
276 |
> |
|
277 |
> |
t.join(); |
278 |
> |
lock.writeLock().unlock(); |
279 |
> |
} |
280 |
> |
|
281 |
> |
/** |
282 |
> |
* read-tryLock fails if locked |
283 |
> |
*/ |
284 |
> |
public void testReadTryLockWhenLocked() throws InterruptedException { |
285 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
286 |
> |
lock.writeLock().lock(); |
287 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
288 |
> |
public void realRun() { |
289 |
> |
assertFalse(lock.readLock().tryLock()); |
290 |
> |
}}); |
291 |
> |
|
292 |
> |
t.join(); |
293 |
> |
lock.writeLock().unlock(); |
294 |
> |
} |
295 |
> |
|
296 |
> |
/** |
297 |
> |
* Multiple threads can hold a read lock when not write-locked |
298 |
> |
*/ |
299 |
> |
public void testMultipleReadLocks() throws InterruptedException { |
300 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
301 |
> |
lock.readLock().lock(); |
302 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
303 |
> |
public void realRun() { |
304 |
> |
assertTrue(lock.readLock().tryLock()); |
305 |
> |
lock.readLock().unlock(); |
306 |
> |
}}); |
307 |
> |
|
308 |
> |
t.join(); |
309 |
> |
lock.readLock().unlock(); |
310 |
> |
} |
311 |
> |
|
312 |
> |
/** |
313 |
> |
* A writelock succeeds after reading threads unlock |
314 |
> |
*/ |
315 |
> |
public void testWriteAfterMultipleReadLocks() throws InterruptedException { |
316 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
317 |
> |
lock.readLock().lock(); |
318 |
> |
Thread t1 = newStartedThread(new CheckedRunnable() { |
319 |
> |
public void realRun() { |
320 |
> |
lock.readLock().lock(); |
321 |
> |
lock.readLock().unlock(); |
322 |
> |
}}); |
323 |
> |
Thread t2 = newStartedThread(new CheckedRunnable() { |
324 |
> |
public void realRun() { |
325 |
> |
lock.writeLock().lock(); |
326 |
> |
lock.writeLock().unlock(); |
327 |
> |
}}); |
328 |
> |
|
329 |
> |
Thread.sleep(SHORT_DELAY_MS); |
330 |
> |
lock.readLock().unlock(); |
331 |
> |
t1.join(MEDIUM_DELAY_MS); |
332 |
> |
t2.join(MEDIUM_DELAY_MS); |
333 |
> |
assertTrue(!t1.isAlive()); |
334 |
> |
assertTrue(!t2.isAlive()); |
335 |
> |
} |
336 |
> |
|
337 |
> |
/** |
338 |
> |
* Readlocks succeed after a writing thread unlocks |
339 |
> |
*/ |
340 |
> |
public void testReadAfterWriteLock() throws InterruptedException { |
341 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
342 |
> |
lock.writeLock().lock(); |
343 |
> |
Thread t1 = newStartedThread(new CheckedRunnable() { |
344 |
> |
public void realRun() { |
345 |
> |
lock.readLock().lock(); |
346 |
> |
lock.readLock().unlock(); |
347 |
> |
}}); |
348 |
> |
Thread t2 = newStartedThread(new CheckedRunnable() { |
349 |
> |
public void realRun() { |
350 |
> |
lock.readLock().lock(); |
351 |
> |
lock.readLock().unlock(); |
352 |
> |
}}); |
353 |
> |
|
354 |
> |
Thread.sleep(SHORT_DELAY_MS); |
355 |
> |
lock.writeLock().unlock(); |
356 |
> |
t1.join(MEDIUM_DELAY_MS); |
357 |
> |
t2.join(MEDIUM_DELAY_MS); |
358 |
> |
assertTrue(!t1.isAlive()); |
359 |
> |
assertTrue(!t2.isAlive()); |
360 |
> |
} |
361 |
> |
|
362 |
> |
/** |
363 |
> |
* Read trylock succeeds if write locked by current thread |
364 |
> |
*/ |
365 |
> |
public void testReadHoldingWriteLock() { |
366 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
367 |
> |
lock.writeLock().lock(); |
368 |
> |
assertTrue(lock.readLock().tryLock()); |
369 |
> |
lock.readLock().unlock(); |
370 |
> |
lock.writeLock().unlock(); |
371 |
> |
} |
372 |
> |
|
373 |
> |
/** |
374 |
> |
* Read lock succeeds if write locked by current thread even if |
375 |
> |
* other threads are waiting for readlock |
376 |
> |
*/ |
377 |
> |
public void testReadHoldingWriteLock2() throws InterruptedException { |
378 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
379 |
> |
lock.writeLock().lock(); |
380 |
> |
Thread t1 = newStartedThread(new CheckedRunnable() { |
381 |
> |
public void realRun() { |
382 |
> |
lock.readLock().lock(); |
383 |
> |
lock.readLock().unlock(); |
384 |
> |
}}); |
385 |
> |
Thread t2 = newStartedThread(new CheckedRunnable() { |
386 |
> |
public void realRun() { |
387 |
> |
lock.readLock().lock(); |
388 |
> |
lock.readLock().unlock(); |
389 |
> |
}}); |
390 |
> |
|
391 |
> |
lock.readLock().lock(); |
392 |
> |
lock.readLock().unlock(); |
393 |
> |
Thread.sleep(SHORT_DELAY_MS); |
394 |
> |
lock.readLock().lock(); |
395 |
> |
lock.readLock().unlock(); |
396 |
> |
lock.writeLock().unlock(); |
397 |
> |
t1.join(MEDIUM_DELAY_MS); |
398 |
> |
t2.join(MEDIUM_DELAY_MS); |
399 |
> |
assertTrue(!t1.isAlive()); |
400 |
> |
assertTrue(!t2.isAlive()); |
401 |
> |
} |
402 |
> |
|
403 |
> |
/** |
404 |
> |
* Read lock succeeds if write locked by current thread even if |
405 |
> |
* other threads are waiting for writelock |
406 |
> |
*/ |
407 |
> |
public void testReadHoldingWriteLock3() throws InterruptedException { |
408 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
409 |
> |
lock.writeLock().lock(); |
410 |
> |
Thread t1 = newStartedThread(new CheckedRunnable() { |
411 |
> |
public void realRun() { |
412 |
> |
lock.writeLock().lock(); |
413 |
> |
lock.writeLock().unlock(); |
414 |
> |
}}); |
415 |
> |
Thread t2 = newStartedThread(new CheckedRunnable() { |
416 |
> |
public void realRun() { |
417 |
> |
lock.writeLock().lock(); |
418 |
> |
lock.writeLock().unlock(); |
419 |
> |
}}); |
420 |
> |
|
421 |
> |
lock.readLock().lock(); |
422 |
> |
lock.readLock().unlock(); |
423 |
> |
Thread.sleep(SHORT_DELAY_MS); |
424 |
> |
lock.readLock().lock(); |
425 |
> |
lock.readLock().unlock(); |
426 |
> |
lock.writeLock().unlock(); |
427 |
> |
t1.join(MEDIUM_DELAY_MS); |
428 |
> |
t2.join(MEDIUM_DELAY_MS); |
429 |
> |
assertTrue(!t1.isAlive()); |
430 |
> |
assertTrue(!t2.isAlive()); |
431 |
> |
} |
432 |
> |
|
433 |
> |
|
434 |
> |
/** |
435 |
> |
* Write lock succeeds if write locked by current thread even if |
436 |
> |
* other threads are waiting for writelock |
437 |
> |
*/ |
438 |
> |
public void testWriteHoldingWriteLock4() throws InterruptedException { |
439 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
440 |
> |
lock.writeLock().lock(); |
441 |
> |
Thread t1 = newStartedThread(new CheckedRunnable() { |
442 |
> |
public void realRun() { |
443 |
> |
lock.writeLock().lock(); |
444 |
> |
lock.writeLock().unlock(); |
445 |
> |
}}); |
446 |
> |
Thread t2 = newStartedThread(new CheckedRunnable() { |
447 |
> |
public void realRun() { |
448 |
> |
lock.writeLock().lock(); |
449 |
> |
lock.writeLock().unlock(); |
450 |
> |
}}); |
451 |
> |
|
452 |
> |
lock.writeLock().lock(); |
453 |
> |
lock.writeLock().unlock(); |
454 |
> |
Thread.sleep(SHORT_DELAY_MS); |
455 |
> |
lock.writeLock().lock(); |
456 |
> |
lock.writeLock().unlock(); |
457 |
> |
lock.writeLock().unlock(); |
458 |
> |
t1.join(MEDIUM_DELAY_MS); |
459 |
> |
t2.join(MEDIUM_DELAY_MS); |
460 |
> |
assertTrue(!t1.isAlive()); |
461 |
> |
assertTrue(!t2.isAlive()); |
462 |
> |
} |
463 |
> |
|
464 |
> |
|
465 |
> |
/** |
466 |
> |
* Fair Read trylock succeeds if write locked by current thread |
467 |
> |
*/ |
468 |
> |
public void testReadHoldingWriteLockFair() { |
469 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true); |
470 |
> |
lock.writeLock().lock(); |
471 |
> |
assertTrue(lock.readLock().tryLock()); |
472 |
> |
lock.readLock().unlock(); |
473 |
> |
lock.writeLock().unlock(); |
474 |
> |
} |
475 |
> |
|
476 |
> |
/** |
477 |
> |
* Fair Read lock succeeds if write locked by current thread even if |
478 |
> |
* other threads are waiting for readlock |
479 |
> |
*/ |
480 |
> |
public void testReadHoldingWriteLockFair2() throws InterruptedException { |
481 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true); |
482 |
> |
lock.writeLock().lock(); |
483 |
> |
Thread t1 = newStartedThread(new CheckedRunnable() { |
484 |
> |
public void realRun() { |
485 |
> |
lock.readLock().lock(); |
486 |
> |
lock.readLock().unlock(); |
487 |
> |
}}); |
488 |
> |
Thread t2 = newStartedThread(new CheckedRunnable() { |
489 |
> |
public void realRun() { |
490 |
> |
lock.readLock().lock(); |
491 |
> |
lock.readLock().unlock(); |
492 |
> |
}}); |
493 |
> |
|
494 |
> |
lock.readLock().lock(); |
495 |
> |
lock.readLock().unlock(); |
496 |
> |
Thread.sleep(SHORT_DELAY_MS); |
497 |
> |
lock.readLock().lock(); |
498 |
> |
lock.readLock().unlock(); |
499 |
> |
lock.writeLock().unlock(); |
500 |
> |
t1.join(MEDIUM_DELAY_MS); |
501 |
> |
t2.join(MEDIUM_DELAY_MS); |
502 |
> |
assertTrue(!t1.isAlive()); |
503 |
> |
assertTrue(!t2.isAlive()); |
504 |
> |
} |
505 |
> |
|
506 |
> |
|
507 |
> |
/** |
508 |
> |
* Fair Read lock succeeds if write locked by current thread even if |
509 |
> |
* other threads are waiting for writelock |
510 |
> |
*/ |
511 |
> |
public void testReadHoldingWriteLockFair3() throws InterruptedException { |
512 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true); |
513 |
> |
lock.writeLock().lock(); |
514 |
> |
Thread t1 = newStartedThread(new CheckedRunnable() { |
515 |
> |
public void realRun() { |
516 |
> |
lock.writeLock().lock(); |
517 |
> |
lock.writeLock().unlock(); |
518 |
> |
}}); |
519 |
> |
Thread t2 = newStartedThread(new CheckedRunnable() { |
520 |
> |
public void realRun() { |
521 |
> |
lock.writeLock().lock(); |
522 |
> |
lock.writeLock().unlock(); |
523 |
> |
}}); |
524 |
> |
|
525 |
> |
lock.readLock().lock(); |
526 |
> |
lock.readLock().unlock(); |
527 |
> |
Thread.sleep(SHORT_DELAY_MS); |
528 |
> |
lock.readLock().lock(); |
529 |
> |
lock.readLock().unlock(); |
530 |
> |
lock.writeLock().unlock(); |
531 |
> |
t1.join(MEDIUM_DELAY_MS); |
532 |
> |
t2.join(MEDIUM_DELAY_MS); |
533 |
> |
assertTrue(!t1.isAlive()); |
534 |
> |
assertTrue(!t2.isAlive()); |
535 |
> |
} |
536 |
> |
|
537 |
> |
|
538 |
> |
/** |
539 |
> |
* Fair Write lock succeeds if write locked by current thread even if |
540 |
> |
* other threads are waiting for writelock |
541 |
> |
*/ |
542 |
> |
public void testWriteHoldingWriteLockFair4() throws InterruptedException { |
543 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true); |
544 |
> |
lock.writeLock().lock(); |
545 |
> |
Thread t1 = newStartedThread(new CheckedRunnable() { |
546 |
> |
public void realRun() { |
547 |
> |
lock.writeLock().lock(); |
548 |
> |
lock.writeLock().unlock(); |
549 |
> |
}}); |
550 |
> |
Thread t2 = newStartedThread(new CheckedRunnable() { |
551 |
> |
public void realRun() { |
552 |
> |
lock.writeLock().lock(); |
553 |
> |
lock.writeLock().unlock(); |
554 |
> |
}}); |
555 |
> |
|
556 |
> |
Thread.sleep(SHORT_DELAY_MS); |
557 |
> |
assertTrue(lock.isWriteLockedByCurrentThread()); |
558 |
> |
assertEquals(1, lock.getWriteHoldCount()); |
559 |
> |
lock.writeLock().lock(); |
560 |
> |
assertEquals(2, lock.getWriteHoldCount()); |
561 |
> |
lock.writeLock().unlock(); |
562 |
> |
lock.writeLock().lock(); |
563 |
> |
lock.writeLock().unlock(); |
564 |
> |
lock.writeLock().unlock(); |
565 |
> |
t1.join(MEDIUM_DELAY_MS); |
566 |
> |
t2.join(MEDIUM_DELAY_MS); |
567 |
> |
assertTrue(!t1.isAlive()); |
568 |
> |
assertTrue(!t2.isAlive()); |
569 |
> |
} |
570 |
> |
|
571 |
> |
|
572 |
> |
/** |
573 |
> |
* Read tryLock succeeds if readlocked but not writelocked |
574 |
> |
*/ |
575 |
> |
public void testTryLockWhenReadLocked() throws InterruptedException { |
576 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
577 |
> |
lock.readLock().lock(); |
578 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
579 |
> |
public void realRun() { |
580 |
> |
assertTrue(lock.readLock().tryLock()); |
581 |
> |
lock.readLock().unlock(); |
582 |
> |
}}); |
583 |
> |
|
584 |
> |
t.join(); |
585 |
> |
lock.readLock().unlock(); |
586 |
|
} |
587 |
|
|
588 |
< |
public void testAwait_IllegalMonitor() { |
589 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
588 |
> |
/** |
589 |
> |
* write tryLock fails when readlocked |
590 |
> |
*/ |
591 |
> |
public void testWriteTryLockWhenReadLocked() throws InterruptedException { |
592 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
593 |
> |
lock.readLock().lock(); |
594 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
595 |
> |
public void realRun() { |
596 |
> |
assertFalse(lock.writeLock().tryLock()); |
597 |
> |
}}); |
598 |
> |
|
599 |
> |
t.join(); |
600 |
> |
lock.readLock().unlock(); |
601 |
> |
} |
602 |
> |
|
603 |
> |
|
604 |
> |
/** |
605 |
> |
* Fair Read tryLock succeeds if readlocked but not writelocked |
606 |
> |
*/ |
607 |
> |
public void testTryLockWhenReadLockedFair() throws InterruptedException { |
608 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true); |
609 |
> |
lock.readLock().lock(); |
610 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
611 |
> |
public void realRun() { |
612 |
> |
assertTrue(lock.readLock().tryLock()); |
613 |
> |
lock.readLock().unlock(); |
614 |
> |
}}); |
615 |
> |
|
616 |
> |
t.join(); |
617 |
> |
lock.readLock().unlock(); |
618 |
> |
} |
619 |
> |
|
620 |
> |
|
621 |
> |
|
622 |
> |
/** |
623 |
> |
* Fair write tryLock fails when readlocked |
624 |
> |
*/ |
625 |
> |
public void testWriteTryLockWhenReadLockedFair() throws InterruptedException { |
626 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true); |
627 |
> |
lock.readLock().lock(); |
628 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
629 |
> |
public void realRun() { |
630 |
> |
assertFalse(lock.writeLock().tryLock()); |
631 |
> |
}}); |
632 |
> |
|
633 |
> |
t.join(); |
634 |
> |
lock.readLock().unlock(); |
635 |
> |
} |
636 |
> |
|
637 |
> |
|
638 |
> |
|
639 |
> |
/** |
640 |
> |
* write timed tryLock times out if locked |
641 |
> |
*/ |
642 |
> |
public void testWriteTryLock_Timeout() throws InterruptedException { |
643 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
644 |
> |
lock.writeLock().lock(); |
645 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
646 |
> |
public void realRun() throws InterruptedException { |
647 |
> |
assertFalse(lock.writeLock().tryLock(1, MILLISECONDS)); |
648 |
> |
}}); |
649 |
> |
|
650 |
> |
t.join(); |
651 |
> |
assertTrue(lock.writeLock().isHeldByCurrentThread()); |
652 |
> |
lock.writeLock().unlock(); |
653 |
> |
} |
654 |
> |
|
655 |
> |
/** |
656 |
> |
* read timed tryLock times out if write-locked |
657 |
> |
*/ |
658 |
> |
public void testReadTryLock_Timeout() throws InterruptedException { |
659 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
660 |
> |
lock.writeLock().lock(); |
661 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
662 |
> |
public void realRun() throws InterruptedException { |
663 |
> |
assertFalse(lock.readLock().tryLock(1, MILLISECONDS)); |
664 |
> |
}}); |
665 |
> |
|
666 |
> |
t.join(); |
667 |
> |
assertTrue(lock.writeLock().isHeldByCurrentThread()); |
668 |
> |
lock.writeLock().unlock(); |
669 |
> |
} |
670 |
> |
|
671 |
> |
|
672 |
> |
/** |
673 |
> |
* write lockInterruptibly succeeds if lock free else is interruptible |
674 |
> |
*/ |
675 |
> |
public void testWriteLockInterruptibly() throws InterruptedException { |
676 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
677 |
> |
lock.writeLock().lockInterruptibly(); |
678 |
> |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
679 |
> |
public void realRun() throws InterruptedException { |
680 |
> |
lock.writeLock().lockInterruptibly(); |
681 |
> |
}}); |
682 |
> |
|
683 |
> |
Thread.sleep(SHORT_DELAY_MS); |
684 |
> |
t.interrupt(); |
685 |
> |
t.join(); |
686 |
> |
releaseLock(lock.writeLock()); |
687 |
> |
} |
688 |
> |
|
689 |
> |
/** |
690 |
> |
* read lockInterruptibly succeeds if lock free else is interruptible |
691 |
> |
*/ |
692 |
> |
public void testReadLockInterruptibly() throws InterruptedException { |
693 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
694 |
> |
lock.writeLock().lockInterruptibly(); |
695 |
> |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
696 |
> |
public void realRun() throws InterruptedException { |
697 |
> |
lock.readLock().lockInterruptibly(); |
698 |
> |
}}); |
699 |
> |
|
700 |
> |
Thread.sleep(SHORT_DELAY_MS); |
701 |
> |
t.interrupt(); |
702 |
> |
t.join(); |
703 |
> |
releaseLock(lock.writeLock()); |
704 |
> |
} |
705 |
> |
|
706 |
> |
/** |
707 |
> |
* Calling await without holding lock throws IllegalMonitorStateException |
708 |
> |
*/ |
709 |
> |
public void testAwait_IllegalMonitor() throws InterruptedException { |
710 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
711 |
|
final Condition c = lock.writeLock().newCondition(); |
712 |
|
try { |
713 |
|
c.await(); |
714 |
< |
fail("should throw"); |
715 |
< |
} |
380 |
< |
catch (IllegalMonitorStateException success) { |
381 |
< |
} |
382 |
< |
catch (Exception ex) { |
383 |
< |
fail("should throw IMSE"); |
384 |
< |
} |
714 |
> |
shouldThrow(); |
715 |
> |
} catch (IllegalMonitorStateException success) {} |
716 |
|
} |
717 |
|
|
718 |
+ |
/** |
719 |
+ |
* Calling signal without holding lock throws IllegalMonitorStateException |
720 |
+ |
*/ |
721 |
|
public void testSignal_IllegalMonitor() { |
722 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
722 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
723 |
|
final Condition c = lock.writeLock().newCondition(); |
724 |
|
try { |
725 |
|
c.signal(); |
726 |
< |
fail("should throw"); |
727 |
< |
} |
394 |
< |
catch (IllegalMonitorStateException success) { |
395 |
< |
} |
396 |
< |
catch (Exception ex) { |
397 |
< |
fail("should throw IMSE"); |
398 |
< |
} |
726 |
> |
shouldThrow(); |
727 |
> |
} catch (IllegalMonitorStateException success) {} |
728 |
|
} |
729 |
|
|
730 |
< |
public void testAwaitNanos_Timeout() { |
731 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
730 |
> |
/** |
731 |
> |
* awaitNanos without a signal times out |
732 |
> |
*/ |
733 |
> |
public void testAwaitNanos_Timeout() throws InterruptedException { |
734 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
735 |
|
final Condition c = lock.writeLock().newCondition(); |
736 |
< |
try { |
737 |
< |
lock.writeLock().lock(); |
738 |
< |
long t = c.awaitNanos(100); |
739 |
< |
assertTrue(t <= 0); |
740 |
< |
lock.writeLock().unlock(); |
409 |
< |
} |
410 |
< |
catch (Exception ex) { |
411 |
< |
fail("unexpected exception"); |
412 |
< |
} |
736 |
> |
|
737 |
> |
lock.writeLock().lock(); |
738 |
> |
long t = c.awaitNanos(100); |
739 |
> |
assertTrue(t <= 0); |
740 |
> |
lock.writeLock().unlock(); |
741 |
|
} |
742 |
|
|
743 |
< |
public void testAwait_Timeout() { |
744 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
743 |
> |
|
744 |
> |
/** |
745 |
> |
* timed await without a signal times out |
746 |
> |
*/ |
747 |
> |
public void testAwait_Timeout() throws InterruptedException { |
748 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
749 |
|
final Condition c = lock.writeLock().newCondition(); |
750 |
< |
try { |
751 |
< |
lock.writeLock().lock(); |
752 |
< |
assertFalse(c.await(10, TimeUnit.MILLISECONDS)); |
421 |
< |
lock.writeLock().unlock(); |
422 |
< |
} |
423 |
< |
catch (Exception ex) { |
424 |
< |
fail("unexpected exception"); |
425 |
< |
} |
750 |
> |
lock.writeLock().lock(); |
751 |
> |
assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS)); |
752 |
> |
lock.writeLock().unlock(); |
753 |
|
} |
754 |
|
|
755 |
< |
public void testAwaitUntil_Timeout() { |
756 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
755 |
> |
/** |
756 |
> |
* awaitUntil without a signal times out |
757 |
> |
*/ |
758 |
> |
public void testAwaitUntil_Timeout() throws InterruptedException { |
759 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
760 |
|
final Condition c = lock.writeLock().newCondition(); |
761 |
< |
try { |
762 |
< |
lock.writeLock().lock(); |
763 |
< |
java.util.Date d = new java.util.Date(); |
764 |
< |
assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10))); |
435 |
< |
lock.writeLock().unlock(); |
436 |
< |
} |
437 |
< |
catch (Exception ex) { |
438 |
< |
fail("unexpected exception"); |
439 |
< |
} |
761 |
> |
lock.writeLock().lock(); |
762 |
> |
java.util.Date d = new java.util.Date(); |
763 |
> |
assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10))); |
764 |
> |
lock.writeLock().unlock(); |
765 |
|
} |
766 |
|
|
767 |
< |
public void testAwait() { |
768 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
767 |
> |
/** |
768 |
> |
* await returns when signalled |
769 |
> |
*/ |
770 |
> |
public void testAwait() throws InterruptedException { |
771 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
772 |
|
final Condition c = lock.writeLock().newCondition(); |
773 |
< |
Thread t = new Thread(new Runnable() { |
774 |
< |
public void run() { |
775 |
< |
try { |
776 |
< |
lock.writeLock().lock(); |
777 |
< |
c.await(); |
778 |
< |
lock.writeLock().unlock(); |
779 |
< |
} |
780 |
< |
catch(InterruptedException e) { |
781 |
< |
threadFail("unexpected exception"); |
782 |
< |
} |
783 |
< |
} |
784 |
< |
}); |
773 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
774 |
> |
public void realRun() throws InterruptedException { |
775 |
> |
lock.writeLock().lock(); |
776 |
> |
c.await(); |
777 |
> |
lock.writeLock().unlock(); |
778 |
> |
}}); |
779 |
> |
|
780 |
> |
Thread.sleep(SHORT_DELAY_MS); |
781 |
> |
lock.writeLock().lock(); |
782 |
> |
c.signal(); |
783 |
> |
lock.writeLock().unlock(); |
784 |
> |
t.join(SHORT_DELAY_MS); |
785 |
> |
assertFalse(t.isAlive()); |
786 |
> |
} |
787 |
|
|
788 |
< |
try { |
789 |
< |
t.start(); |
790 |
< |
Thread.sleep(SHORT_DELAY_MS); |
791 |
< |
lock.writeLock().lock(); |
792 |
< |
c.signal(); |
793 |
< |
lock.writeLock().unlock(); |
794 |
< |
t.join(SHORT_DELAY_MS); |
795 |
< |
assertFalse(t.isAlive()); |
796 |
< |
} |
797 |
< |
catch (Exception ex) { |
798 |
< |
fail("unexpected exception"); |
788 |
> |
/** A helper class for uninterruptible wait tests */ |
789 |
> |
class UninterruptableThread extends Thread { |
790 |
> |
private Lock lock; |
791 |
> |
private Condition c; |
792 |
> |
|
793 |
> |
public volatile boolean canAwake = false; |
794 |
> |
public volatile boolean interrupted = false; |
795 |
> |
public volatile boolean lockStarted = false; |
796 |
> |
|
797 |
> |
public UninterruptableThread(Lock lock, Condition c) { |
798 |
> |
this.lock = lock; |
799 |
> |
this.c = c; |
800 |
> |
} |
801 |
> |
|
802 |
> |
public synchronized void run() { |
803 |
> |
lock.lock(); |
804 |
> |
lockStarted = true; |
805 |
> |
|
806 |
> |
while (!canAwake) { |
807 |
> |
c.awaitUninterruptibly(); |
808 |
> |
} |
809 |
> |
|
810 |
> |
interrupted = isInterrupted(); |
811 |
> |
lock.unlock(); |
812 |
|
} |
813 |
|
} |
814 |
|
|
815 |
< |
public void testAwaitUninterruptibly() { |
816 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
815 |
> |
/** |
816 |
> |
* awaitUninterruptibly doesn't abort on interrupt |
817 |
> |
*/ |
818 |
> |
public void testAwaitUninterruptibly() throws InterruptedException { |
819 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
820 |
|
final Condition c = lock.writeLock().newCondition(); |
821 |
< |
Thread t = new Thread(new Runnable() { |
822 |
< |
public void run() { |
823 |
< |
lock.writeLock().lock(); |
478 |
< |
c.awaitUninterruptibly(); |
479 |
< |
lock.writeLock().unlock(); |
480 |
< |
} |
481 |
< |
}); |
821 |
> |
UninterruptableThread thread = new UninterruptableThread(lock.writeLock(), c); |
822 |
> |
|
823 |
> |
thread.start(); |
824 |
|
|
825 |
+ |
while (!thread.lockStarted) { |
826 |
+ |
Thread.sleep(100); |
827 |
+ |
} |
828 |
+ |
|
829 |
+ |
lock.writeLock().lock(); |
830 |
|
try { |
831 |
< |
t.start(); |
832 |
< |
Thread.sleep(SHORT_DELAY_MS); |
486 |
< |
t.interrupt(); |
487 |
< |
lock.writeLock().lock(); |
831 |
> |
thread.interrupt(); |
832 |
> |
thread.canAwake = true; |
833 |
|
c.signal(); |
834 |
+ |
} finally { |
835 |
|
lock.writeLock().unlock(); |
490 |
– |
t.join(SHORT_DELAY_MS); |
491 |
– |
assertFalse(t.isAlive()); |
492 |
– |
} |
493 |
– |
catch (Exception ex) { |
494 |
– |
fail("unexpected exception"); |
836 |
|
} |
837 |
+ |
|
838 |
+ |
thread.join(); |
839 |
+ |
assertTrue(thread.interrupted); |
840 |
+ |
assertFalse(thread.isAlive()); |
841 |
|
} |
842 |
|
|
843 |
< |
public void testAwait_Interrupt() { |
844 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
845 |
< |
final Condition c = lock.writeLock().newCondition(); |
846 |
< |
Thread t = new Thread(new Runnable() { |
847 |
< |
public void run() { |
848 |
< |
try { |
849 |
< |
lock.writeLock().lock(); |
850 |
< |
c.await(); |
851 |
< |
lock.writeLock().unlock(); |
852 |
< |
threadFail("should throw"); |
853 |
< |
} |
854 |
< |
catch(InterruptedException success) { |
855 |
< |
} |
856 |
< |
} |
857 |
< |
}); |
858 |
< |
|
859 |
< |
try { |
860 |
< |
t.start(); |
861 |
< |
Thread.sleep(SHORT_DELAY_MS); |
862 |
< |
t.interrupt(); |
863 |
< |
t.join(SHORT_DELAY_MS); |
864 |
< |
assertFalse(t.isAlive()); |
520 |
< |
} |
521 |
< |
catch (Exception ex) { |
522 |
< |
fail("unexpected exception"); |
523 |
< |
} |
524 |
< |
} |
525 |
< |
|
526 |
< |
public void testAwaitNanos_Interrupt() { |
527 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
528 |
< |
final Condition c = lock.writeLock().newCondition(); |
529 |
< |
Thread t = new Thread(new Runnable() { |
530 |
< |
public void run() { |
531 |
< |
try { |
532 |
< |
lock.writeLock().lock(); |
533 |
< |
c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000); |
534 |
< |
lock.writeLock().unlock(); |
535 |
< |
threadFail("should throw"); |
536 |
< |
} |
537 |
< |
catch(InterruptedException success) { |
538 |
< |
} |
539 |
< |
} |
540 |
< |
}); |
541 |
< |
|
542 |
< |
try { |
543 |
< |
t.start(); |
544 |
< |
Thread.sleep(SHORT_DELAY_MS); |
545 |
< |
t.interrupt(); |
546 |
< |
t.join(SHORT_DELAY_MS); |
547 |
< |
assertFalse(t.isAlive()); |
548 |
< |
} |
549 |
< |
catch (Exception ex) { |
550 |
< |
fail("unexpected exception"); |
551 |
< |
} |
552 |
< |
} |
553 |
< |
|
554 |
< |
public void testAwaitUntil_Interrupt() { |
555 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
556 |
< |
final Condition c = lock.writeLock().newCondition(); |
557 |
< |
Thread t = new Thread(new Runnable() { |
558 |
< |
public void run() { |
559 |
< |
try { |
560 |
< |
lock.writeLock().lock(); |
561 |
< |
java.util.Date d = new java.util.Date(); |
562 |
< |
c.awaitUntil(new java.util.Date(d.getTime() + 10000)); |
563 |
< |
lock.writeLock().unlock(); |
564 |
< |
threadFail("should throw"); |
565 |
< |
} |
566 |
< |
catch(InterruptedException success) { |
567 |
< |
} |
568 |
< |
} |
569 |
< |
}); |
570 |
< |
|
571 |
< |
try { |
572 |
< |
t.start(); |
573 |
< |
Thread.sleep(SHORT_DELAY_MS); |
574 |
< |
t.interrupt(); |
575 |
< |
t.join(SHORT_DELAY_MS); |
576 |
< |
assertFalse(t.isAlive()); |
577 |
< |
} |
578 |
< |
catch (Exception ex) { |
579 |
< |
fail("unexpected exception"); |
580 |
< |
} |
581 |
< |
} |
582 |
< |
|
583 |
< |
public void testSignalAll() { |
584 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
585 |
< |
final Condition c = lock.writeLock().newCondition(); |
586 |
< |
Thread t1 = new Thread(new Runnable() { |
587 |
< |
public void run() { |
588 |
< |
try { |
589 |
< |
lock.writeLock().lock(); |
590 |
< |
c.await(); |
591 |
< |
lock.writeLock().unlock(); |
592 |
< |
} |
593 |
< |
catch(InterruptedException e) { |
594 |
< |
threadFail("unexpected exception"); |
595 |
< |
} |
596 |
< |
} |
597 |
< |
}); |
598 |
< |
|
599 |
< |
Thread t2 = new Thread(new Runnable() { |
600 |
< |
public void run() { |
601 |
< |
try { |
602 |
< |
lock.writeLock().lock(); |
603 |
< |
c.await(); |
604 |
< |
lock.writeLock().unlock(); |
605 |
< |
} |
606 |
< |
catch(InterruptedException e) { |
607 |
< |
threadFail("unexpected exception"); |
608 |
< |
} |
609 |
< |
} |
610 |
< |
}); |
611 |
< |
|
612 |
< |
try { |
613 |
< |
t1.start(); |
614 |
< |
t2.start(); |
615 |
< |
Thread.sleep(SHORT_DELAY_MS); |
616 |
< |
lock.writeLock().lock(); |
617 |
< |
c.signalAll(); |
618 |
< |
lock.writeLock().unlock(); |
619 |
< |
t1.join(SHORT_DELAY_MS); |
620 |
< |
t2.join(SHORT_DELAY_MS); |
621 |
< |
assertFalse(t1.isAlive()); |
622 |
< |
assertFalse(t2.isAlive()); |
623 |
< |
} |
624 |
< |
catch (Exception ex) { |
625 |
< |
fail("unexpected exception"); |
626 |
< |
} |
843 |
> |
/** |
844 |
> |
* await is interruptible |
845 |
> |
*/ |
846 |
> |
public void testAwait_Interrupt() throws InterruptedException { |
847 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
848 |
> |
final Condition c = lock.writeLock().newCondition(); |
849 |
> |
final CountDownLatch locked = new CountDownLatch(1); |
850 |
> |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
851 |
> |
public void realRun() throws InterruptedException { |
852 |
> |
lock.writeLock().lock(); |
853 |
> |
assertTrue(lock.isWriteLocked()); |
854 |
> |
locked.countDown(); |
855 |
> |
try { c.await(); } |
856 |
> |
finally { lock.writeLock().unlock(); } |
857 |
> |
}}); |
858 |
> |
|
859 |
> |
locked.await(); |
860 |
> |
while (lock.isWriteLocked()) |
861 |
> |
Thread.yield(); |
862 |
> |
t.interrupt(); |
863 |
> |
awaitTermination(t, LONG_DELAY_MS); |
864 |
> |
assertFalse(lock.isWriteLocked()); |
865 |
|
} |
866 |
|
|
867 |
< |
public void testSerialization() { |
867 |
> |
/** |
868 |
> |
* awaitNanos is interruptible |
869 |
> |
*/ |
870 |
> |
public void testAwaitNanos_Interrupt() throws InterruptedException { |
871 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
872 |
> |
final Condition c = lock.writeLock().newCondition(); |
873 |
> |
final CountDownLatch locked = new CountDownLatch(1); |
874 |
> |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
875 |
> |
public void realRun() throws InterruptedException { |
876 |
> |
lock.writeLock().lock(); |
877 |
> |
assertTrue(lock.isWriteLocked()); |
878 |
> |
locked.countDown(); |
879 |
> |
try { c.awaitNanos(MILLISECONDS.toNanos(LONG_DELAY_MS)); } |
880 |
> |
finally { lock.writeLock().unlock(); } |
881 |
> |
}}); |
882 |
> |
|
883 |
> |
locked.await(); |
884 |
> |
while (lock.isWriteLocked()) |
885 |
> |
Thread.yield(); |
886 |
> |
t.interrupt(); |
887 |
> |
awaitTermination(t, LONG_DELAY_MS); |
888 |
> |
assertFalse(lock.isWriteLocked()); |
889 |
> |
} |
890 |
> |
|
891 |
> |
/** |
892 |
> |
* awaitUntil is interruptible |
893 |
> |
*/ |
894 |
> |
public void testAwaitUntil_Interrupt() throws InterruptedException { |
895 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
896 |
> |
final Condition c = lock.writeLock().newCondition(); |
897 |
> |
final CountDownLatch locked = new CountDownLatch(1); |
898 |
> |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
899 |
> |
public void realRun() throws InterruptedException { |
900 |
> |
lock.writeLock().lock(); |
901 |
> |
assertTrue(lock.isWriteLocked()); |
902 |
> |
locked.countDown(); |
903 |
> |
java.util.Date d = new java.util.Date(); |
904 |
> |
try { c.awaitUntil(new java.util.Date(d.getTime() + 10000)); } |
905 |
> |
finally { lock.writeLock().unlock(); } |
906 |
> |
}}); |
907 |
> |
|
908 |
> |
locked.await(); |
909 |
> |
while (lock.isWriteLocked()) |
910 |
> |
Thread.yield(); |
911 |
> |
t.interrupt(); |
912 |
> |
awaitTermination(t, LONG_DELAY_MS); |
913 |
> |
assertFalse(lock.isWriteLocked()); |
914 |
> |
} |
915 |
> |
|
916 |
> |
/** |
917 |
> |
* signalAll wakes up all threads |
918 |
> |
*/ |
919 |
> |
public void testSignalAll() throws InterruptedException { |
920 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
921 |
> |
final Condition c = lock.writeLock().newCondition(); |
922 |
> |
Thread t1 = newStartedThread(new CheckedRunnable() { |
923 |
> |
public void realRun() throws InterruptedException { |
924 |
> |
lock.writeLock().lock(); |
925 |
> |
c.await(); |
926 |
> |
lock.writeLock().unlock(); |
927 |
> |
}}); |
928 |
> |
|
929 |
> |
Thread t2 = newStartedThread(new CheckedRunnable() { |
930 |
> |
public void realRun() throws InterruptedException { |
931 |
> |
lock.writeLock().lock(); |
932 |
> |
c.await(); |
933 |
> |
lock.writeLock().unlock(); |
934 |
> |
}}); |
935 |
> |
|
936 |
> |
Thread.sleep(SHORT_DELAY_MS); |
937 |
> |
lock.writeLock().lock(); |
938 |
> |
c.signalAll(); |
939 |
> |
lock.writeLock().unlock(); |
940 |
> |
t1.join(SHORT_DELAY_MS); |
941 |
> |
t2.join(SHORT_DELAY_MS); |
942 |
> |
assertFalse(t1.isAlive()); |
943 |
> |
assertFalse(t2.isAlive()); |
944 |
> |
} |
945 |
> |
|
946 |
> |
/** |
947 |
> |
* A serialized lock deserializes as unlocked |
948 |
> |
*/ |
949 |
> |
public void testSerialization() throws Exception { |
950 |
|
ReentrantReadWriteLock l = new ReentrantReadWriteLock(); |
951 |
|
l.readLock().lock(); |
952 |
|
l.readLock().unlock(); |
953 |
|
|
954 |
+ |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
955 |
+ |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
956 |
+ |
out.writeObject(l); |
957 |
+ |
out.close(); |
958 |
+ |
|
959 |
+ |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
960 |
+ |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
961 |
+ |
ReentrantReadWriteLock r = (ReentrantReadWriteLock) in.readObject(); |
962 |
+ |
r.readLock().lock(); |
963 |
+ |
r.readLock().unlock(); |
964 |
+ |
} |
965 |
+ |
|
966 |
+ |
/** |
967 |
+ |
* hasQueuedThreads reports whether there are waiting threads |
968 |
+ |
*/ |
969 |
+ |
public void testhasQueuedThreads() throws InterruptedException { |
970 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
971 |
+ |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
972 |
+ |
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
973 |
+ |
assertFalse(lock.hasQueuedThreads()); |
974 |
+ |
lock.writeLock().lock(); |
975 |
+ |
t1.start(); |
976 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
977 |
+ |
assertTrue(lock.hasQueuedThreads()); |
978 |
+ |
t2.start(); |
979 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
980 |
+ |
assertTrue(lock.hasQueuedThreads()); |
981 |
+ |
t1.interrupt(); |
982 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
983 |
+ |
assertTrue(lock.hasQueuedThreads()); |
984 |
+ |
lock.writeLock().unlock(); |
985 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
986 |
+ |
assertFalse(lock.hasQueuedThreads()); |
987 |
+ |
t1.join(); |
988 |
+ |
t2.join(); |
989 |
+ |
} |
990 |
+ |
|
991 |
+ |
/** |
992 |
+ |
* hasQueuedThread(null) throws NPE |
993 |
+ |
*/ |
994 |
+ |
public void testHasQueuedThreadNPE() { |
995 |
+ |
final ReentrantReadWriteLock sync = new ReentrantReadWriteLock(); |
996 |
|
try { |
997 |
< |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
998 |
< |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
999 |
< |
out.writeObject(l); |
638 |
< |
out.close(); |
639 |
< |
|
640 |
< |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
641 |
< |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
642 |
< |
ReentrantReadWriteLock r = (ReentrantReadWriteLock) in.readObject(); |
643 |
< |
r.readLock().lock(); |
644 |
< |
r.readLock().unlock(); |
645 |
< |
} catch(Exception e){ |
646 |
< |
e.printStackTrace(); |
647 |
< |
fail("unexpected exception"); |
648 |
< |
} |
997 |
> |
sync.hasQueuedThread(null); |
998 |
> |
shouldThrow(); |
999 |
> |
} catch (NullPointerException success) {} |
1000 |
|
} |
1001 |
|
|
1002 |
+ |
/** |
1003 |
+ |
* hasQueuedThread reports whether a thread is queued. |
1004 |
+ |
*/ |
1005 |
+ |
public void testHasQueuedThread() throws InterruptedException { |
1006 |
+ |
final ReentrantReadWriteLock sync = new ReentrantReadWriteLock(); |
1007 |
+ |
Thread t1 = new Thread(new InterruptedLockRunnable(sync)); |
1008 |
+ |
Thread t2 = new Thread(new InterruptibleLockRunnable(sync)); |
1009 |
+ |
assertFalse(sync.hasQueuedThread(t1)); |
1010 |
+ |
assertFalse(sync.hasQueuedThread(t2)); |
1011 |
+ |
sync.writeLock().lock(); |
1012 |
+ |
t1.start(); |
1013 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1014 |
+ |
assertTrue(sync.hasQueuedThread(t1)); |
1015 |
+ |
t2.start(); |
1016 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1017 |
+ |
assertTrue(sync.hasQueuedThread(t1)); |
1018 |
+ |
assertTrue(sync.hasQueuedThread(t2)); |
1019 |
+ |
t1.interrupt(); |
1020 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1021 |
+ |
assertFalse(sync.hasQueuedThread(t1)); |
1022 |
+ |
assertTrue(sync.hasQueuedThread(t2)); |
1023 |
+ |
sync.writeLock().unlock(); |
1024 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1025 |
+ |
assertFalse(sync.hasQueuedThread(t1)); |
1026 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1027 |
+ |
assertFalse(sync.hasQueuedThread(t2)); |
1028 |
+ |
t1.join(); |
1029 |
+ |
t2.join(); |
1030 |
+ |
} |
1031 |
+ |
|
1032 |
+ |
|
1033 |
+ |
/** |
1034 |
+ |
* getQueueLength reports number of waiting threads |
1035 |
+ |
*/ |
1036 |
+ |
public void testGetQueueLength() throws InterruptedException { |
1037 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1038 |
+ |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
1039 |
+ |
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
1040 |
+ |
assertEquals(0, lock.getQueueLength()); |
1041 |
+ |
lock.writeLock().lock(); |
1042 |
+ |
t1.start(); |
1043 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1044 |
+ |
assertEquals(1, lock.getQueueLength()); |
1045 |
+ |
t2.start(); |
1046 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1047 |
+ |
assertEquals(2, lock.getQueueLength()); |
1048 |
+ |
t1.interrupt(); |
1049 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1050 |
+ |
assertEquals(1, lock.getQueueLength()); |
1051 |
+ |
lock.writeLock().unlock(); |
1052 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1053 |
+ |
assertEquals(0, lock.getQueueLength()); |
1054 |
+ |
t1.join(); |
1055 |
+ |
t2.join(); |
1056 |
+ |
} |
1057 |
+ |
|
1058 |
+ |
/** |
1059 |
+ |
* getQueuedThreads includes waiting threads |
1060 |
+ |
*/ |
1061 |
+ |
public void testGetQueuedThreads() throws InterruptedException { |
1062 |
+ |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1063 |
+ |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
1064 |
+ |
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
1065 |
+ |
assertTrue(lock.getQueuedThreads().isEmpty()); |
1066 |
+ |
lock.writeLock().lock(); |
1067 |
+ |
assertTrue(lock.getQueuedThreads().isEmpty()); |
1068 |
+ |
t1.start(); |
1069 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1070 |
+ |
assertTrue(lock.getQueuedThreads().contains(t1)); |
1071 |
+ |
t2.start(); |
1072 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1073 |
+ |
assertTrue(lock.getQueuedThreads().contains(t1)); |
1074 |
+ |
assertTrue(lock.getQueuedThreads().contains(t2)); |
1075 |
+ |
t1.interrupt(); |
1076 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1077 |
+ |
assertFalse(lock.getQueuedThreads().contains(t1)); |
1078 |
+ |
assertTrue(lock.getQueuedThreads().contains(t2)); |
1079 |
+ |
lock.writeLock().unlock(); |
1080 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1081 |
+ |
assertTrue(lock.getQueuedThreads().isEmpty()); |
1082 |
+ |
t1.join(); |
1083 |
+ |
t2.join(); |
1084 |
+ |
} |
1085 |
+ |
|
1086 |
+ |
/** |
1087 |
+ |
* hasWaiters throws NPE if null |
1088 |
+ |
*/ |
1089 |
+ |
public void testHasWaitersNPE() { |
1090 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1091 |
+ |
try { |
1092 |
+ |
lock.hasWaiters(null); |
1093 |
+ |
shouldThrow(); |
1094 |
+ |
} catch (NullPointerException success) {} |
1095 |
+ |
} |
1096 |
+ |
|
1097 |
+ |
/** |
1098 |
+ |
* getWaitQueueLength throws NPE if null |
1099 |
+ |
*/ |
1100 |
+ |
public void testGetWaitQueueLengthNPE() { |
1101 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1102 |
+ |
try { |
1103 |
+ |
lock.getWaitQueueLength(null); |
1104 |
+ |
shouldThrow(); |
1105 |
+ |
} catch (NullPointerException success) {} |
1106 |
+ |
} |
1107 |
+ |
|
1108 |
+ |
|
1109 |
+ |
/** |
1110 |
+ |
* getWaitingThreads throws NPE if null |
1111 |
+ |
*/ |
1112 |
+ |
public void testGetWaitingThreadsNPE() { |
1113 |
+ |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1114 |
+ |
try { |
1115 |
+ |
lock.getWaitingThreads(null); |
1116 |
+ |
shouldThrow(); |
1117 |
+ |
} catch (NullPointerException success) {} |
1118 |
+ |
} |
1119 |
+ |
|
1120 |
+ |
/** |
1121 |
+ |
* hasWaiters throws IAE if not owned |
1122 |
+ |
*/ |
1123 |
+ |
public void testHasWaitersIAE() { |
1124 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1125 |
+ |
final Condition c = lock.writeLock().newCondition(); |
1126 |
+ |
final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock(); |
1127 |
+ |
try { |
1128 |
+ |
lock2.hasWaiters(c); |
1129 |
+ |
shouldThrow(); |
1130 |
+ |
} catch (IllegalArgumentException success) {} |
1131 |
+ |
} |
1132 |
+ |
|
1133 |
+ |
/** |
1134 |
+ |
* hasWaiters throws IMSE if not locked |
1135 |
+ |
*/ |
1136 |
+ |
public void testHasWaitersIMSE() { |
1137 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1138 |
+ |
final Condition c = lock.writeLock().newCondition(); |
1139 |
+ |
try { |
1140 |
+ |
lock.hasWaiters(c); |
1141 |
+ |
shouldThrow(); |
1142 |
+ |
} catch (IllegalMonitorStateException success) {} |
1143 |
+ |
} |
1144 |
+ |
|
1145 |
+ |
|
1146 |
+ |
/** |
1147 |
+ |
* getWaitQueueLength throws IAE if not owned |
1148 |
+ |
*/ |
1149 |
+ |
public void testGetWaitQueueLengthIAE() { |
1150 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1151 |
+ |
final Condition c = lock.writeLock().newCondition(); |
1152 |
+ |
final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock(); |
1153 |
+ |
try { |
1154 |
+ |
lock2.getWaitQueueLength(c); |
1155 |
+ |
shouldThrow(); |
1156 |
+ |
} catch (IllegalArgumentException success) {} |
1157 |
+ |
} |
1158 |
+ |
|
1159 |
+ |
/** |
1160 |
+ |
* getWaitQueueLength throws IMSE if not locked |
1161 |
+ |
*/ |
1162 |
+ |
public void testGetWaitQueueLengthIMSE() { |
1163 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1164 |
+ |
final Condition c = lock.writeLock().newCondition(); |
1165 |
+ |
try { |
1166 |
+ |
lock.getWaitQueueLength(c); |
1167 |
+ |
shouldThrow(); |
1168 |
+ |
} catch (IllegalMonitorStateException success) {} |
1169 |
+ |
} |
1170 |
+ |
|
1171 |
+ |
|
1172 |
+ |
/** |
1173 |
+ |
* getWaitingThreads throws IAE if not owned |
1174 |
+ |
*/ |
1175 |
+ |
public void testGetWaitingThreadsIAE() { |
1176 |
+ |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1177 |
+ |
final Condition c = lock.writeLock().newCondition(); |
1178 |
+ |
final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock(); |
1179 |
+ |
try { |
1180 |
+ |
lock2.getWaitingThreads(c); |
1181 |
+ |
shouldThrow(); |
1182 |
+ |
} catch (IllegalArgumentException success) {} |
1183 |
+ |
} |
1184 |
+ |
|
1185 |
+ |
/** |
1186 |
+ |
* getWaitingThreads throws IMSE if not locked |
1187 |
+ |
*/ |
1188 |
+ |
public void testGetWaitingThreadsIMSE() { |
1189 |
+ |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1190 |
+ |
final Condition c = lock.writeLock().newCondition(); |
1191 |
+ |
try { |
1192 |
+ |
lock.getWaitingThreads(c); |
1193 |
+ |
shouldThrow(); |
1194 |
+ |
} catch (IllegalMonitorStateException success) {} |
1195 |
+ |
} |
1196 |
+ |
|
1197 |
+ |
|
1198 |
+ |
/** |
1199 |
+ |
* hasWaiters returns true when a thread is waiting, else false |
1200 |
+ |
*/ |
1201 |
+ |
public void testHasWaiters() throws InterruptedException { |
1202 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1203 |
+ |
final Condition c = lock.writeLock().newCondition(); |
1204 |
+ |
Thread t = newStartedThread(new CheckedRunnable() { |
1205 |
+ |
public void realRun() throws InterruptedException { |
1206 |
+ |
lock.writeLock().lock(); |
1207 |
+ |
assertFalse(lock.hasWaiters(c)); |
1208 |
+ |
assertEquals(0, lock.getWaitQueueLength(c)); |
1209 |
+ |
c.await(); |
1210 |
+ |
lock.writeLock().unlock(); |
1211 |
+ |
}}); |
1212 |
+ |
|
1213 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1214 |
+ |
lock.writeLock().lock(); |
1215 |
+ |
assertTrue(lock.hasWaiters(c)); |
1216 |
+ |
assertEquals(1, lock.getWaitQueueLength(c)); |
1217 |
+ |
c.signal(); |
1218 |
+ |
lock.writeLock().unlock(); |
1219 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1220 |
+ |
lock.writeLock().lock(); |
1221 |
+ |
assertFalse(lock.hasWaiters(c)); |
1222 |
+ |
assertEquals(0, lock.getWaitQueueLength(c)); |
1223 |
+ |
lock.writeLock().unlock(); |
1224 |
+ |
t.join(SHORT_DELAY_MS); |
1225 |
+ |
assertFalse(t.isAlive()); |
1226 |
+ |
} |
1227 |
+ |
|
1228 |
+ |
/** |
1229 |
+ |
* getWaitQueueLength returns number of waiting threads |
1230 |
+ |
*/ |
1231 |
+ |
public void testGetWaitQueueLength() throws InterruptedException { |
1232 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1233 |
+ |
final Condition c = lock.writeLock().newCondition(); |
1234 |
+ |
Thread t = newStartedThread(new CheckedRunnable() { |
1235 |
+ |
public void realRun() throws InterruptedException { |
1236 |
+ |
lock.writeLock().lock(); |
1237 |
+ |
assertFalse(lock.hasWaiters(c)); |
1238 |
+ |
assertEquals(0, lock.getWaitQueueLength(c)); |
1239 |
+ |
c.await(); |
1240 |
+ |
lock.writeLock().unlock(); |
1241 |
+ |
}}); |
1242 |
+ |
|
1243 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1244 |
+ |
lock.writeLock().lock(); |
1245 |
+ |
assertTrue(lock.hasWaiters(c)); |
1246 |
+ |
assertEquals(1, lock.getWaitQueueLength(c)); |
1247 |
+ |
c.signal(); |
1248 |
+ |
lock.writeLock().unlock(); |
1249 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1250 |
+ |
lock.writeLock().lock(); |
1251 |
+ |
assertFalse(lock.hasWaiters(c)); |
1252 |
+ |
assertEquals(0, lock.getWaitQueueLength(c)); |
1253 |
+ |
lock.writeLock().unlock(); |
1254 |
+ |
t.join(SHORT_DELAY_MS); |
1255 |
+ |
assertFalse(t.isAlive()); |
1256 |
+ |
} |
1257 |
+ |
|
1258 |
+ |
|
1259 |
+ |
/** |
1260 |
+ |
* getWaitingThreads returns only and all waiting threads |
1261 |
+ |
*/ |
1262 |
+ |
public void testGetWaitingThreads() throws InterruptedException { |
1263 |
+ |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1264 |
+ |
final Condition c = lock.writeLock().newCondition(); |
1265 |
+ |
Thread t1 = new Thread(new CheckedRunnable() { |
1266 |
+ |
public void realRun() throws InterruptedException { |
1267 |
+ |
lock.writeLock().lock(); |
1268 |
+ |
assertTrue(lock.getWaitingThreads(c).isEmpty()); |
1269 |
+ |
c.await(); |
1270 |
+ |
lock.writeLock().unlock(); |
1271 |
+ |
}}); |
1272 |
+ |
|
1273 |
+ |
Thread t2 = new Thread(new CheckedRunnable() { |
1274 |
+ |
public void realRun() throws InterruptedException { |
1275 |
+ |
lock.writeLock().lock(); |
1276 |
+ |
assertFalse(lock.getWaitingThreads(c).isEmpty()); |
1277 |
+ |
c.await(); |
1278 |
+ |
lock.writeLock().unlock(); |
1279 |
+ |
}}); |
1280 |
+ |
|
1281 |
+ |
lock.writeLock().lock(); |
1282 |
+ |
assertTrue(lock.getWaitingThreads(c).isEmpty()); |
1283 |
+ |
lock.writeLock().unlock(); |
1284 |
+ |
t1.start(); |
1285 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1286 |
+ |
t2.start(); |
1287 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1288 |
+ |
lock.writeLock().lock(); |
1289 |
+ |
assertTrue(lock.hasWaiters(c)); |
1290 |
+ |
assertTrue(lock.getWaitingThreads(c).contains(t1)); |
1291 |
+ |
assertTrue(lock.getWaitingThreads(c).contains(t2)); |
1292 |
+ |
c.signalAll(); |
1293 |
+ |
lock.writeLock().unlock(); |
1294 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1295 |
+ |
lock.writeLock().lock(); |
1296 |
+ |
assertFalse(lock.hasWaiters(c)); |
1297 |
+ |
assertTrue(lock.getWaitingThreads(c).isEmpty()); |
1298 |
+ |
lock.writeLock().unlock(); |
1299 |
+ |
t1.join(SHORT_DELAY_MS); |
1300 |
+ |
t2.join(SHORT_DELAY_MS); |
1301 |
+ |
assertFalse(t1.isAlive()); |
1302 |
+ |
assertFalse(t2.isAlive()); |
1303 |
+ |
} |
1304 |
+ |
|
1305 |
+ |
/** |
1306 |
+ |
* toString indicates current lock state |
1307 |
+ |
*/ |
1308 |
+ |
public void testToString() { |
1309 |
+ |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1310 |
+ |
String us = lock.toString(); |
1311 |
+ |
assertTrue(us.indexOf("Write locks = 0") >= 0); |
1312 |
+ |
assertTrue(us.indexOf("Read locks = 0") >= 0); |
1313 |
+ |
lock.writeLock().lock(); |
1314 |
+ |
String ws = lock.toString(); |
1315 |
+ |
assertTrue(ws.indexOf("Write locks = 1") >= 0); |
1316 |
+ |
assertTrue(ws.indexOf("Read locks = 0") >= 0); |
1317 |
+ |
lock.writeLock().unlock(); |
1318 |
+ |
lock.readLock().lock(); |
1319 |
+ |
lock.readLock().lock(); |
1320 |
+ |
String rs = lock.toString(); |
1321 |
+ |
assertTrue(rs.indexOf("Write locks = 0") >= 0); |
1322 |
+ |
assertTrue(rs.indexOf("Read locks = 2") >= 0); |
1323 |
+ |
} |
1324 |
+ |
|
1325 |
+ |
/** |
1326 |
+ |
* readLock.toString indicates current lock state |
1327 |
+ |
*/ |
1328 |
+ |
public void testReadLockToString() { |
1329 |
+ |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1330 |
+ |
String us = lock.readLock().toString(); |
1331 |
+ |
assertTrue(us.indexOf("Read locks = 0") >= 0); |
1332 |
+ |
lock.readLock().lock(); |
1333 |
+ |
lock.readLock().lock(); |
1334 |
+ |
String rs = lock.readLock().toString(); |
1335 |
+ |
assertTrue(rs.indexOf("Read locks = 2") >= 0); |
1336 |
+ |
} |
1337 |
+ |
|
1338 |
+ |
/** |
1339 |
+ |
* writeLock.toString indicates current lock state |
1340 |
+ |
*/ |
1341 |
+ |
public void testWriteLockToString() { |
1342 |
+ |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1343 |
+ |
String us = lock.writeLock().toString(); |
1344 |
+ |
assertTrue(us.indexOf("Unlocked") >= 0); |
1345 |
+ |
lock.writeLock().lock(); |
1346 |
+ |
String ls = lock.writeLock().toString(); |
1347 |
+ |
assertTrue(ls.indexOf("Locked") >= 0); |
1348 |
+ |
} |
1349 |
|
|
1350 |
|
} |