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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/licenses/publicdomain |
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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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|
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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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|
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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 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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/** |
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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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* 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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/** |
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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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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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/** |
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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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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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* write-unlocking an unlocked lock throws IllegalMonitorStateException |
131 |
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* getWriteHoldCount returns number of recursive holds |
132 |
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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){} |
133 |
> |
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(); |
137 |
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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-lockInterruptibly is interruptible |
146 |
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* WriteLock.getHoldCount returns number of recursive holds |
147 |
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*/ |
148 |
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public void testWriteLockInterruptibly_Interrupted() { |
149 |
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final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
150 |
< |
lock.writeLock().lock(); |
151 |
< |
Thread t = new Thread(new Runnable() { |
152 |
< |
public void run() { |
153 |
< |
try { |
154 |
< |
lock.writeLock().lockInterruptibly(); |
67 |
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threadShouldThrow(); |
68 |
< |
} catch(InterruptedException success){} |
69 |
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} |
70 |
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}); |
71 |
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try { |
72 |
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t.start(); |
73 |
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t.interrupt(); |
74 |
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lock.writeLock().unlock(); |
75 |
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t.join(); |
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} catch(Exception e){ |
77 |
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unexpectedException(); |
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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 |
83 |
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*/ |
84 |
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public void testWriteTryLock_Interrupted() { |
85 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
86 |
< |
lock.writeLock().lock(); |
87 |
< |
Thread t = new Thread(new Runnable() { |
88 |
< |
public void run() { |
89 |
< |
try { |
90 |
< |
lock.writeLock().tryLock(1000,TimeUnit.MILLISECONDS); |
91 |
< |
threadShouldThrow(); |
92 |
< |
} catch(InterruptedException success){} |
93 |
< |
} |
94 |
< |
}); |
95 |
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try { |
96 |
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t.start(); |
97 |
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t.interrupt(); |
148 |
> |
public void testGetHoldCount() { |
149 |
> |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
150 |
> |
for (int i = 1; i <= SIZE; i++) { |
151 |
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lock.writeLock().lock(); |
152 |
> |
assertEquals(i,lock.writeLock().getHoldCount()); |
153 |
> |
} |
154 |
> |
for (int i = SIZE; i > 0; i--) { |
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lock.writeLock().unlock(); |
156 |
< |
t.join(); |
100 |
< |
} catch(Exception e){ |
101 |
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unexpectedException(); |
156 |
> |
assertEquals(i-1,lock.writeLock().getHoldCount()); |
157 |
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} |
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} |
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|
160 |
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/** |
161 |
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* read-lockInterruptibly is interruptible |
161 |
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* getReadHoldCount returns number of recursive holds |
162 |
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*/ |
163 |
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public void testReadLockInterruptibly_Interrupted() { |
164 |
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final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
165 |
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lock.writeLock().lock(); |
166 |
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Thread t = new Thread(new Runnable() { |
167 |
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public void run() { |
168 |
< |
try { |
169 |
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lock.readLock().lockInterruptibly(); |
170 |
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threadShouldThrow(); |
171 |
< |
} catch(InterruptedException success){} |
117 |
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} |
118 |
< |
}); |
119 |
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try { |
120 |
< |
t.start(); |
121 |
< |
t.interrupt(); |
122 |
< |
lock.writeLock().unlock(); |
123 |
< |
t.join(); |
124 |
< |
} catch(Exception e){ |
125 |
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unexpectedException(); |
126 |
< |
} |
127 |
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} |
128 |
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|
129 |
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/** |
130 |
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* timed read-trylock is interruptible |
131 |
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*/ |
132 |
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public void testReadTryLock_Interrupted() { |
133 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
134 |
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lock.writeLock().lock(); |
135 |
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Thread t = new Thread(new Runnable() { |
136 |
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public void run() { |
137 |
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try { |
138 |
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lock.readLock().tryLock(1000,TimeUnit.MILLISECONDS); |
139 |
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threadShouldThrow(); |
140 |
< |
} catch(InterruptedException success){} |
141 |
< |
} |
142 |
< |
}); |
143 |
< |
try { |
144 |
< |
t.start(); |
145 |
< |
t.interrupt(); |
146 |
< |
t.join(); |
147 |
< |
} catch(Exception e){ |
148 |
< |
unexpectedException(); |
163 |
> |
public void testGetReadHoldCount() { |
164 |
> |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
165 |
> |
for (int i = 1; i <= SIZE; i++) { |
166 |
> |
lock.readLock().lock(); |
167 |
> |
assertEquals(i,lock.getReadHoldCount()); |
168 |
> |
} |
169 |
> |
for (int i = SIZE; i > 0; i--) { |
170 |
> |
lock.readLock().unlock(); |
171 |
> |
assertEquals(i-1,lock.getReadHoldCount()); |
172 |
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} |
173 |
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} |
174 |
|
|
152 |
– |
|
153 |
– |
/** |
154 |
– |
* write-trylock fails if locked |
155 |
– |
*/ |
156 |
– |
public void testWriteTryLockWhenLocked() { |
157 |
– |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
158 |
– |
lock.writeLock().lock(); |
159 |
– |
Thread t = new Thread(new Runnable() { |
160 |
– |
public void run() { |
161 |
– |
threadAssertFalse(lock.writeLock().tryLock()); |
162 |
– |
} |
163 |
– |
}); |
164 |
– |
try { |
165 |
– |
t.start(); |
166 |
– |
t.join(); |
167 |
– |
lock.writeLock().unlock(); |
168 |
– |
} catch(Exception e){ |
169 |
– |
unexpectedException(); |
170 |
– |
} |
171 |
– |
} |
175 |
|
|
176 |
|
/** |
177 |
< |
* read-trylock fails if locked |
177 |
> |
* write-unlocking an unlocked lock throws IllegalMonitorStateException |
178 |
|
*/ |
179 |
< |
public void testReadTryLockWhenLocked() { |
180 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
178 |
< |
lock.writeLock().lock(); |
179 |
< |
Thread t = new Thread(new Runnable() { |
180 |
< |
public void run() { |
181 |
< |
threadAssertFalse(lock.readLock().tryLock()); |
182 |
< |
} |
183 |
< |
}); |
179 |
> |
public void testUnlock_IllegalMonitorStateException() { |
180 |
> |
ReentrantReadWriteLock rl = new ReentrantReadWriteLock(); |
181 |
|
try { |
182 |
< |
t.start(); |
183 |
< |
t.join(); |
184 |
< |
lock.writeLock().unlock(); |
185 |
< |
} catch(Exception e){ |
186 |
< |
unexpectedException(); |
190 |
< |
} |
191 |
< |
} |
182 |
> |
rl.writeLock().unlock(); |
183 |
> |
shouldThrow(); |
184 |
> |
} catch (IllegalMonitorStateException success) {} |
185 |
> |
} |
186 |
> |
|
187 |
|
|
188 |
|
/** |
189 |
< |
* Multiple threads can hold a read lock when not write-locked |
189 |
> |
* write-lockInterruptibly is interruptible |
190 |
|
*/ |
191 |
< |
public void testMultipleReadLocks() { |
192 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
193 |
< |
lock.readLock().lock(); |
194 |
< |
Thread t = new Thread(new Runnable() { |
195 |
< |
public void run() { |
196 |
< |
threadAssertTrue(lock.readLock().tryLock()); |
197 |
< |
lock.readLock().unlock(); |
198 |
< |
} |
199 |
< |
}); |
200 |
< |
try { |
201 |
< |
t.start(); |
202 |
< |
t.join(); |
203 |
< |
lock.readLock().unlock(); |
204 |
< |
} catch(Exception e){ |
205 |
< |
unexpectedException(); |
206 |
< |
} |
207 |
< |
} |
191 |
> |
public void testWriteLockInterruptibly_Interrupted() throws Exception { |
192 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
193 |
> |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
194 |
> |
public void realRun() throws InterruptedException { |
195 |
> |
lock.writeLock().lockInterruptibly(); |
196 |
> |
lock.writeLock().unlock(); |
197 |
> |
lock.writeLock().lockInterruptibly(); |
198 |
> |
lock.writeLock().unlock(); |
199 |
> |
}}); |
200 |
> |
|
201 |
> |
lock.writeLock().lock(); |
202 |
> |
t.start(); |
203 |
> |
Thread.sleep(SHORT_DELAY_MS); |
204 |
> |
t.interrupt(); |
205 |
> |
Thread.sleep(SHORT_DELAY_MS); |
206 |
> |
lock.writeLock().unlock(); |
207 |
> |
t.join(); |
208 |
> |
} |
209 |
|
|
210 |
|
/** |
211 |
< |
* A writelock succeeds after reading threads unlock |
211 |
> |
* timed write-tryLock is interruptible |
212 |
> |
*/ |
213 |
> |
public void testWriteTryLock_Interrupted() throws InterruptedException { |
214 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
215 |
> |
lock.writeLock().lock(); |
216 |
> |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
217 |
> |
public void realRun() throws InterruptedException { |
218 |
> |
lock.writeLock().tryLock(1000,MILLISECONDS); |
219 |
> |
}}); |
220 |
> |
|
221 |
> |
t.start(); |
222 |
> |
t.interrupt(); |
223 |
> |
lock.writeLock().unlock(); |
224 |
> |
t.join(); |
225 |
> |
} |
226 |
> |
|
227 |
> |
/** |
228 |
> |
* read-lockInterruptibly is interruptible |
229 |
|
*/ |
230 |
< |
public void testWriteAfterMultipleReadLocks() { |
231 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
232 |
< |
lock.readLock().lock(); |
233 |
< |
Thread t1 = new Thread(new Runnable() { |
234 |
< |
public void run() { |
235 |
< |
lock.readLock().lock(); |
236 |
< |
lock.readLock().unlock(); |
237 |
< |
} |
238 |
< |
}); |
239 |
< |
Thread t2 = new Thread(new Runnable() { |
240 |
< |
public void run() { |
241 |
< |
lock.writeLock().lock(); |
242 |
< |
lock.writeLock().unlock(); |
243 |
< |
} |
244 |
< |
}); |
232 |
< |
|
233 |
< |
try { |
234 |
< |
t1.start(); |
235 |
< |
t2.start(); |
236 |
< |
Thread.sleep(SHORT_DELAY_MS); |
237 |
< |
lock.readLock().unlock(); |
238 |
< |
t1.join(MEDIUM_DELAY_MS); |
239 |
< |
t2.join(MEDIUM_DELAY_MS); |
240 |
< |
assertTrue(!t1.isAlive()); |
241 |
< |
assertTrue(!t2.isAlive()); |
242 |
< |
|
243 |
< |
} catch(Exception e){ |
244 |
< |
unexpectedException(); |
245 |
< |
} |
246 |
< |
} |
230 |
> |
public void testReadLockInterruptibly_Interrupted() throws InterruptedException { |
231 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
232 |
> |
lock.writeLock().lock(); |
233 |
> |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
234 |
> |
public void realRun() throws InterruptedException { |
235 |
> |
lock.readLock().lockInterruptibly(); |
236 |
> |
}}); |
237 |
> |
|
238 |
> |
t.start(); |
239 |
> |
Thread.sleep(SHORT_DELAY_MS); |
240 |
> |
t.interrupt(); |
241 |
> |
Thread.sleep(SHORT_DELAY_MS); |
242 |
> |
lock.writeLock().unlock(); |
243 |
> |
t.join(); |
244 |
> |
} |
245 |
|
|
246 |
|
/** |
247 |
< |
* Readlocks succeed after a writing thread unlocks |
247 |
> |
* timed read-tryLock is interruptible |
248 |
|
*/ |
249 |
< |
public void testReadAfterWriteLock() { |
250 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
251 |
< |
lock.writeLock().lock(); |
252 |
< |
Thread t1 = new Thread(new Runnable() { |
253 |
< |
public void run() { |
254 |
< |
lock.readLock().lock(); |
255 |
< |
lock.readLock().unlock(); |
256 |
< |
} |
257 |
< |
}); |
258 |
< |
Thread t2 = new Thread(new Runnable() { |
259 |
< |
public void run() { |
260 |
< |
lock.readLock().lock(); |
263 |
< |
lock.readLock().unlock(); |
264 |
< |
} |
265 |
< |
}); |
266 |
< |
|
267 |
< |
try { |
268 |
< |
t1.start(); |
269 |
< |
t2.start(); |
270 |
< |
Thread.sleep(SHORT_DELAY_MS); |
271 |
< |
lock.writeLock().unlock(); |
272 |
< |
t1.join(MEDIUM_DELAY_MS); |
273 |
< |
t2.join(MEDIUM_DELAY_MS); |
274 |
< |
assertTrue(!t1.isAlive()); |
275 |
< |
assertTrue(!t2.isAlive()); |
276 |
< |
|
277 |
< |
} catch(Exception e){ |
278 |
< |
unexpectedException(); |
279 |
< |
} |
280 |
< |
} |
249 |
> |
public void testReadTryLock_Interrupted() throws InterruptedException { |
250 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
251 |
> |
lock.writeLock().lock(); |
252 |
> |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
253 |
> |
public void realRun() throws InterruptedException { |
254 |
> |
lock.readLock().tryLock(1000,MILLISECONDS); |
255 |
> |
}}); |
256 |
> |
|
257 |
> |
t.start(); |
258 |
> |
t.interrupt(); |
259 |
> |
t.join(); |
260 |
> |
} |
261 |
|
|
262 |
|
|
263 |
|
/** |
264 |
< |
* Read trylock succeeds if readlocked but not writelocked |
265 |
< |
*/ |
266 |
< |
public void testTryLockWhenReadLocked() { |
267 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
268 |
< |
lock.readLock().lock(); |
269 |
< |
Thread t = new Thread(new Runnable() { |
270 |
< |
public void run() { |
271 |
< |
threadAssertTrue(lock.readLock().tryLock()); |
272 |
< |
lock.readLock().unlock(); |
293 |
< |
} |
294 |
< |
}); |
295 |
< |
try { |
296 |
< |
t.start(); |
297 |
< |
t.join(); |
298 |
< |
lock.readLock().unlock(); |
299 |
< |
} catch(Exception e){ |
300 |
< |
unexpectedException(); |
301 |
< |
} |
302 |
< |
} |
264 |
> |
* write-tryLock fails if locked |
265 |
> |
*/ |
266 |
> |
public void testWriteTryLockWhenLocked() throws InterruptedException { |
267 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
268 |
> |
lock.writeLock().lock(); |
269 |
> |
Thread t = new Thread(new CheckedRunnable() { |
270 |
> |
public void realRun() { |
271 |
> |
threadAssertFalse(lock.writeLock().tryLock()); |
272 |
> |
}}); |
273 |
|
|
274 |
< |
|
274 |
> |
t.start(); |
275 |
> |
t.join(); |
276 |
> |
lock.writeLock().unlock(); |
277 |
> |
} |
278 |
|
|
279 |
|
/** |
280 |
< |
* write trylock fails when readlocked |
280 |
> |
* read-tryLock fails if locked |
281 |
|
*/ |
282 |
< |
public void testWriteTryLockWhenReadLocked() { |
283 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
284 |
< |
lock.readLock().lock(); |
285 |
< |
Thread t = new Thread(new Runnable() { |
286 |
< |
public void run() { |
287 |
< |
threadAssertFalse(lock.writeLock().tryLock()); |
288 |
< |
} |
316 |
< |
}); |
317 |
< |
try { |
318 |
< |
t.start(); |
319 |
< |
t.join(); |
320 |
< |
lock.readLock().unlock(); |
321 |
< |
} catch(Exception e){ |
322 |
< |
unexpectedException(); |
323 |
< |
} |
324 |
< |
} |
282 |
> |
public void testReadTryLockWhenLocked() throws InterruptedException { |
283 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
284 |
> |
lock.writeLock().lock(); |
285 |
> |
Thread t = new Thread(new CheckedRunnable() { |
286 |
> |
public void realRun() { |
287 |
> |
threadAssertFalse(lock.readLock().tryLock()); |
288 |
> |
}}); |
289 |
|
|
290 |
< |
|
290 |
> |
t.start(); |
291 |
> |
t.join(); |
292 |
> |
lock.writeLock().unlock(); |
293 |
> |
} |
294 |
|
|
295 |
|
/** |
296 |
< |
* write timed trylock times out if locked |
297 |
< |
*/ |
298 |
< |
public void testWriteTryLock_Timeout() { |
299 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
300 |
< |
lock.writeLock().lock(); |
301 |
< |
Thread t = new Thread(new Runnable() { |
302 |
< |
public void run() { |
303 |
< |
try { |
304 |
< |
threadAssertFalse(lock.writeLock().tryLock(1, TimeUnit.MILLISECONDS)); |
305 |
< |
} catch (Exception ex) { |
306 |
< |
threadUnexpectedException(); |
307 |
< |
} |
308 |
< |
} |
309 |
< |
}); |
310 |
< |
try { |
344 |
< |
t.start(); |
345 |
< |
t.join(); |
346 |
< |
lock.writeLock().unlock(); |
347 |
< |
} catch(Exception e){ |
348 |
< |
unexpectedException(); |
349 |
< |
} |
350 |
< |
} |
296 |
> |
* Multiple threads can hold a read lock when not write-locked |
297 |
> |
*/ |
298 |
> |
public void testMultipleReadLocks() throws InterruptedException { |
299 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
300 |
> |
lock.readLock().lock(); |
301 |
> |
Thread t = new Thread(new CheckedRunnable() { |
302 |
> |
public void realRun() { |
303 |
> |
threadAssertTrue(lock.readLock().tryLock()); |
304 |
> |
lock.readLock().unlock(); |
305 |
> |
}}); |
306 |
> |
|
307 |
> |
t.start(); |
308 |
> |
t.join(); |
309 |
> |
lock.readLock().unlock(); |
310 |
> |
} |
311 |
|
|
312 |
|
/** |
313 |
< |
* read timed trylock times out if write-locked |
313 |
> |
* A writelock succeeds after reading threads unlock |
314 |
|
*/ |
315 |
< |
public void testReadTryLock_Timeout() { |
316 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
317 |
< |
lock.writeLock().lock(); |
318 |
< |
Thread t = new Thread(new Runnable() { |
319 |
< |
public void run() { |
320 |
< |
try { |
321 |
< |
threadAssertFalse(lock.readLock().tryLock(1, TimeUnit.MILLISECONDS)); |
322 |
< |
} catch (Exception ex) { |
323 |
< |
threadUnexpectedException(); |
324 |
< |
} |
325 |
< |
} |
326 |
< |
}); |
327 |
< |
try { |
328 |
< |
t.start(); |
329 |
< |
t.join(); |
330 |
< |
lock.writeLock().unlock(); |
331 |
< |
} catch(Exception e){ |
332 |
< |
unexpectedException(); |
333 |
< |
} |
334 |
< |
} |
315 |
> |
public void testWriteAfterMultipleReadLocks() throws InterruptedException { |
316 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
317 |
> |
lock.readLock().lock(); |
318 |
> |
Thread t1 = new Thread(new CheckedRunnable() { |
319 |
> |
public void realRun() { |
320 |
> |
lock.readLock().lock(); |
321 |
> |
lock.readLock().unlock(); |
322 |
> |
}}); |
323 |
> |
Thread t2 = new Thread(new CheckedRunnable() { |
324 |
> |
public void realRun() { |
325 |
> |
lock.writeLock().lock(); |
326 |
> |
lock.writeLock().unlock(); |
327 |
> |
}}); |
328 |
> |
|
329 |
> |
t1.start(); |
330 |
> |
t2.start(); |
331 |
> |
Thread.sleep(SHORT_DELAY_MS); |
332 |
> |
lock.readLock().unlock(); |
333 |
> |
t1.join(MEDIUM_DELAY_MS); |
334 |
> |
t2.join(MEDIUM_DELAY_MS); |
335 |
> |
assertTrue(!t1.isAlive()); |
336 |
> |
assertTrue(!t2.isAlive()); |
337 |
> |
} |
338 |
> |
|
339 |
> |
/** |
340 |
> |
* Readlocks succeed after a writing thread unlocks |
341 |
> |
*/ |
342 |
> |
public void testReadAfterWriteLock() throws InterruptedException { |
343 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
344 |
> |
lock.writeLock().lock(); |
345 |
> |
Thread t1 = new Thread(new CheckedRunnable() { |
346 |
> |
public void realRun() { |
347 |
> |
lock.readLock().lock(); |
348 |
> |
lock.readLock().unlock(); |
349 |
> |
}}); |
350 |
> |
Thread t2 = new Thread(new CheckedRunnable() { |
351 |
> |
public void realRun() { |
352 |
> |
lock.readLock().lock(); |
353 |
> |
lock.readLock().unlock(); |
354 |
> |
}}); |
355 |
> |
|
356 |
> |
t1.start(); |
357 |
> |
t2.start(); |
358 |
> |
Thread.sleep(SHORT_DELAY_MS); |
359 |
> |
lock.writeLock().unlock(); |
360 |
> |
t1.join(MEDIUM_DELAY_MS); |
361 |
> |
t2.join(MEDIUM_DELAY_MS); |
362 |
> |
assertTrue(!t1.isAlive()); |
363 |
> |
assertTrue(!t2.isAlive()); |
364 |
> |
} |
365 |
> |
|
366 |
> |
/** |
367 |
> |
* Read trylock succeeds if write locked by current thread |
368 |
> |
*/ |
369 |
> |
public void testReadHoldingWriteLock() { |
370 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
371 |
> |
lock.writeLock().lock(); |
372 |
> |
assertTrue(lock.readLock().tryLock()); |
373 |
> |
lock.readLock().unlock(); |
374 |
> |
lock.writeLock().unlock(); |
375 |
> |
} |
376 |
> |
|
377 |
> |
/** |
378 |
> |
* Read lock succeeds if write locked by current thread even if |
379 |
> |
* other threads are waiting for readlock |
380 |
> |
*/ |
381 |
> |
public void testReadHoldingWriteLock2() throws InterruptedException { |
382 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
383 |
> |
lock.writeLock().lock(); |
384 |
> |
Thread t1 = new Thread(new CheckedRunnable() { |
385 |
> |
public void realRun() { |
386 |
> |
lock.readLock().lock(); |
387 |
> |
lock.readLock().unlock(); |
388 |
> |
}}); |
389 |
> |
Thread t2 = new Thread(new CheckedRunnable() { |
390 |
> |
public void realRun() { |
391 |
> |
lock.readLock().lock(); |
392 |
> |
lock.readLock().unlock(); |
393 |
> |
}}); |
394 |
> |
|
395 |
> |
t1.start(); |
396 |
> |
t2.start(); |
397 |
> |
lock.readLock().lock(); |
398 |
> |
lock.readLock().unlock(); |
399 |
> |
Thread.sleep(SHORT_DELAY_MS); |
400 |
> |
lock.readLock().lock(); |
401 |
> |
lock.readLock().unlock(); |
402 |
> |
lock.writeLock().unlock(); |
403 |
> |
t1.join(MEDIUM_DELAY_MS); |
404 |
> |
t2.join(MEDIUM_DELAY_MS); |
405 |
> |
assertTrue(!t1.isAlive()); |
406 |
> |
assertTrue(!t2.isAlive()); |
407 |
> |
} |
408 |
> |
|
409 |
> |
/** |
410 |
> |
* Read lock succeeds if write locked by current thread even if |
411 |
> |
* other threads are waiting for writelock |
412 |
> |
*/ |
413 |
> |
public void testReadHoldingWriteLock3() throws InterruptedException { |
414 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
415 |
> |
lock.writeLock().lock(); |
416 |
> |
Thread t1 = new Thread(new CheckedRunnable() { |
417 |
> |
public void realRun() { |
418 |
> |
lock.writeLock().lock(); |
419 |
> |
lock.writeLock().unlock(); |
420 |
> |
}}); |
421 |
> |
Thread t2 = new Thread(new CheckedRunnable() { |
422 |
> |
public void realRun() { |
423 |
> |
lock.writeLock().lock(); |
424 |
> |
lock.writeLock().unlock(); |
425 |
> |
}}); |
426 |
> |
|
427 |
> |
t1.start(); |
428 |
> |
t2.start(); |
429 |
> |
lock.readLock().lock(); |
430 |
> |
lock.readLock().unlock(); |
431 |
> |
Thread.sleep(SHORT_DELAY_MS); |
432 |
> |
lock.readLock().lock(); |
433 |
> |
lock.readLock().unlock(); |
434 |
> |
lock.writeLock().unlock(); |
435 |
> |
t1.join(MEDIUM_DELAY_MS); |
436 |
> |
t2.join(MEDIUM_DELAY_MS); |
437 |
> |
assertTrue(!t1.isAlive()); |
438 |
> |
assertTrue(!t2.isAlive()); |
439 |
> |
} |
440 |
> |
|
441 |
> |
|
442 |
> |
/** |
443 |
> |
* Write lock succeeds if write locked by current thread even if |
444 |
> |
* other threads are waiting for writelock |
445 |
> |
*/ |
446 |
> |
public void testWriteHoldingWriteLock4() throws InterruptedException { |
447 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
448 |
> |
lock.writeLock().lock(); |
449 |
> |
Thread t1 = new Thread(new CheckedRunnable() { |
450 |
> |
public void realRun() { |
451 |
> |
lock.writeLock().lock(); |
452 |
> |
lock.writeLock().unlock(); |
453 |
> |
}}); |
454 |
> |
Thread t2 = new Thread(new CheckedRunnable() { |
455 |
> |
public void realRun() { |
456 |
> |
lock.writeLock().lock(); |
457 |
> |
lock.writeLock().unlock(); |
458 |
> |
}}); |
459 |
> |
|
460 |
> |
t1.start(); |
461 |
> |
t2.start(); |
462 |
> |
lock.writeLock().lock(); |
463 |
> |
lock.writeLock().unlock(); |
464 |
> |
Thread.sleep(SHORT_DELAY_MS); |
465 |
> |
lock.writeLock().lock(); |
466 |
> |
lock.writeLock().unlock(); |
467 |
> |
lock.writeLock().unlock(); |
468 |
> |
t1.join(MEDIUM_DELAY_MS); |
469 |
> |
t2.join(MEDIUM_DELAY_MS); |
470 |
> |
assertTrue(!t1.isAlive()); |
471 |
> |
assertTrue(!t2.isAlive()); |
472 |
> |
} |
473 |
> |
|
474 |
> |
|
475 |
> |
/** |
476 |
> |
* Fair Read trylock succeeds if write locked by current thread |
477 |
> |
*/ |
478 |
> |
public void testReadHoldingWriteLockFair() { |
479 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true); |
480 |
> |
lock.writeLock().lock(); |
481 |
> |
assertTrue(lock.readLock().tryLock()); |
482 |
> |
lock.readLock().unlock(); |
483 |
> |
lock.writeLock().unlock(); |
484 |
> |
} |
485 |
> |
|
486 |
> |
/** |
487 |
> |
* Fair Read lock succeeds if write locked by current thread even if |
488 |
> |
* other threads are waiting for readlock |
489 |
> |
*/ |
490 |
> |
public void testReadHoldingWriteLockFair2() throws InterruptedException { |
491 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true); |
492 |
> |
lock.writeLock().lock(); |
493 |
> |
Thread t1 = new Thread(new CheckedRunnable() { |
494 |
> |
public void realRun() { |
495 |
> |
lock.readLock().lock(); |
496 |
> |
lock.readLock().unlock(); |
497 |
> |
}}); |
498 |
> |
Thread t2 = new Thread(new CheckedRunnable() { |
499 |
> |
public void realRun() { |
500 |
> |
lock.readLock().lock(); |
501 |
> |
lock.readLock().unlock(); |
502 |
> |
}}); |
503 |
> |
|
504 |
> |
t1.start(); |
505 |
> |
t2.start(); |
506 |
> |
lock.readLock().lock(); |
507 |
> |
lock.readLock().unlock(); |
508 |
> |
Thread.sleep(SHORT_DELAY_MS); |
509 |
> |
lock.readLock().lock(); |
510 |
> |
lock.readLock().unlock(); |
511 |
> |
lock.writeLock().unlock(); |
512 |
> |
t1.join(MEDIUM_DELAY_MS); |
513 |
> |
t2.join(MEDIUM_DELAY_MS); |
514 |
> |
assertTrue(!t1.isAlive()); |
515 |
> |
assertTrue(!t2.isAlive()); |
516 |
> |
} |
517 |
> |
|
518 |
> |
|
519 |
> |
/** |
520 |
> |
* Fair Read lock succeeds if write locked by current thread even if |
521 |
> |
* other threads are waiting for writelock |
522 |
> |
*/ |
523 |
> |
public void testReadHoldingWriteLockFair3() throws InterruptedException { |
524 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true); |
525 |
> |
lock.writeLock().lock(); |
526 |
> |
Thread t1 = new Thread(new CheckedRunnable() { |
527 |
> |
public void realRun() { |
528 |
> |
lock.writeLock().lock(); |
529 |
> |
lock.writeLock().unlock(); |
530 |
> |
}}); |
531 |
> |
Thread t2 = new Thread(new CheckedRunnable() { |
532 |
> |
public void realRun() { |
533 |
> |
lock.writeLock().lock(); |
534 |
> |
lock.writeLock().unlock(); |
535 |
> |
}}); |
536 |
> |
|
537 |
> |
t1.start(); |
538 |
> |
t2.start(); |
539 |
> |
lock.readLock().lock(); |
540 |
> |
lock.readLock().unlock(); |
541 |
> |
Thread.sleep(SHORT_DELAY_MS); |
542 |
> |
lock.readLock().lock(); |
543 |
> |
lock.readLock().unlock(); |
544 |
> |
lock.writeLock().unlock(); |
545 |
> |
t1.join(MEDIUM_DELAY_MS); |
546 |
> |
t2.join(MEDIUM_DELAY_MS); |
547 |
> |
assertTrue(!t1.isAlive()); |
548 |
> |
assertTrue(!t2.isAlive()); |
549 |
> |
} |
550 |
> |
|
551 |
> |
|
552 |
> |
/** |
553 |
> |
* Fair Write lock succeeds if write locked by current thread even if |
554 |
> |
* other threads are waiting for writelock |
555 |
> |
*/ |
556 |
> |
public void testWriteHoldingWriteLockFair4() throws InterruptedException { |
557 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true); |
558 |
> |
lock.writeLock().lock(); |
559 |
> |
Thread t1 = new Thread(new CheckedRunnable() { |
560 |
> |
public void realRun() { |
561 |
> |
lock.writeLock().lock(); |
562 |
> |
lock.writeLock().unlock(); |
563 |
> |
}}); |
564 |
> |
Thread t2 = new Thread(new CheckedRunnable() { |
565 |
> |
public void realRun() { |
566 |
> |
lock.writeLock().lock(); |
567 |
> |
lock.writeLock().unlock(); |
568 |
> |
}}); |
569 |
> |
|
570 |
> |
t1.start(); |
571 |
> |
t2.start(); |
572 |
> |
Thread.sleep(SHORT_DELAY_MS); |
573 |
> |
assertTrue(lock.isWriteLockedByCurrentThread()); |
574 |
> |
assertTrue(lock.getWriteHoldCount() == 1); |
575 |
> |
lock.writeLock().lock(); |
576 |
> |
assertTrue(lock.getWriteHoldCount() == 2); |
577 |
> |
lock.writeLock().unlock(); |
578 |
> |
lock.writeLock().lock(); |
579 |
> |
lock.writeLock().unlock(); |
580 |
> |
lock.writeLock().unlock(); |
581 |
> |
t1.join(MEDIUM_DELAY_MS); |
582 |
> |
t2.join(MEDIUM_DELAY_MS); |
583 |
> |
assertTrue(!t1.isAlive()); |
584 |
> |
assertTrue(!t2.isAlive()); |
585 |
> |
} |
586 |
> |
|
587 |
> |
|
588 |
> |
/** |
589 |
> |
* Read tryLock succeeds if readlocked but not writelocked |
590 |
> |
*/ |
591 |
> |
public void testTryLockWhenReadLocked() throws InterruptedException { |
592 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
593 |
> |
lock.readLock().lock(); |
594 |
> |
Thread t = new Thread(new CheckedRunnable() { |
595 |
> |
public void realRun() { |
596 |
> |
threadAssertTrue(lock.readLock().tryLock()); |
597 |
> |
lock.readLock().unlock(); |
598 |
> |
}}); |
599 |
> |
|
600 |
> |
t.start(); |
601 |
> |
t.join(); |
602 |
> |
lock.readLock().unlock(); |
603 |
> |
} |
604 |
> |
|
605 |
> |
|
606 |
> |
|
607 |
> |
/** |
608 |
> |
* write tryLock fails when readlocked |
609 |
> |
*/ |
610 |
> |
public void testWriteTryLockWhenReadLocked() throws InterruptedException { |
611 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
612 |
> |
lock.readLock().lock(); |
613 |
> |
Thread t = new Thread(new CheckedRunnable() { |
614 |
> |
public void realRun() { |
615 |
> |
threadAssertFalse(lock.writeLock().tryLock()); |
616 |
> |
}}); |
617 |
> |
|
618 |
> |
t.start(); |
619 |
> |
t.join(); |
620 |
> |
lock.readLock().unlock(); |
621 |
> |
} |
622 |
> |
|
623 |
> |
|
624 |
> |
/** |
625 |
> |
* Fair Read tryLock succeeds if readlocked but not writelocked |
626 |
> |
*/ |
627 |
> |
public void testTryLockWhenReadLockedFair() throws InterruptedException { |
628 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true); |
629 |
> |
lock.readLock().lock(); |
630 |
> |
Thread t = new Thread(new CheckedRunnable() { |
631 |
> |
public void realRun() { |
632 |
> |
threadAssertTrue(lock.readLock().tryLock()); |
633 |
> |
lock.readLock().unlock(); |
634 |
> |
}}); |
635 |
> |
|
636 |
> |
t.start(); |
637 |
> |
t.join(); |
638 |
> |
lock.readLock().unlock(); |
639 |
> |
} |
640 |
> |
|
641 |
> |
|
642 |
> |
|
643 |
> |
/** |
644 |
> |
* Fair write tryLock fails when readlocked |
645 |
> |
*/ |
646 |
> |
public void testWriteTryLockWhenReadLockedFair() throws InterruptedException { |
647 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true); |
648 |
> |
lock.readLock().lock(); |
649 |
> |
Thread t = new Thread(new CheckedRunnable() { |
650 |
> |
public void realRun() { |
651 |
> |
threadAssertFalse(lock.writeLock().tryLock()); |
652 |
> |
}}); |
653 |
> |
|
654 |
> |
t.start(); |
655 |
> |
t.join(); |
656 |
> |
lock.readLock().unlock(); |
657 |
> |
} |
658 |
> |
|
659 |
> |
|
660 |
> |
|
661 |
> |
/** |
662 |
> |
* write timed tryLock times out if locked |
663 |
> |
*/ |
664 |
> |
public void testWriteTryLock_Timeout() throws InterruptedException { |
665 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
666 |
> |
lock.writeLock().lock(); |
667 |
> |
Thread t = new Thread(new CheckedRunnable() { |
668 |
> |
public void realRun() throws InterruptedException { |
669 |
> |
threadAssertFalse(lock.writeLock().tryLock(1, MILLISECONDS)); |
670 |
> |
}}); |
671 |
> |
|
672 |
> |
t.start(); |
673 |
> |
t.join(); |
674 |
> |
assertTrue(lock.writeLock().isHeldByCurrentThread()); |
675 |
> |
lock.writeLock().unlock(); |
676 |
> |
} |
677 |
> |
|
678 |
> |
/** |
679 |
> |
* read timed tryLock times out if write-locked |
680 |
> |
*/ |
681 |
> |
public void testReadTryLock_Timeout() throws InterruptedException { |
682 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
683 |
> |
lock.writeLock().lock(); |
684 |
> |
Thread t = new Thread(new CheckedRunnable() { |
685 |
> |
public void realRun() throws InterruptedException { |
686 |
> |
threadAssertFalse(lock.readLock().tryLock(1, MILLISECONDS)); |
687 |
> |
}}); |
688 |
> |
|
689 |
> |
t.start(); |
690 |
> |
t.join(); |
691 |
> |
assertTrue(lock.writeLock().isHeldByCurrentThread()); |
692 |
> |
lock.writeLock().unlock(); |
693 |
> |
} |
694 |
|
|
695 |
|
|
696 |
|
/** |
697 |
|
* write lockInterruptibly succeeds if lock free else is interruptible |
698 |
|
*/ |
699 |
< |
public void testWriteLockInterruptibly() { |
700 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
701 |
< |
try { |
702 |
< |
lock.writeLock().lockInterruptibly(); |
703 |
< |
} catch(Exception e) { |
704 |
< |
unexpectedException(); |
705 |
< |
} |
706 |
< |
Thread t = new Thread(new Runnable() { |
707 |
< |
public void run() { |
708 |
< |
try { |
709 |
< |
lock.writeLock().lockInterruptibly(); |
710 |
< |
threadShouldThrow(); |
711 |
< |
} |
712 |
< |
catch(InterruptedException success) { |
394 |
< |
} |
395 |
< |
} |
396 |
< |
}); |
397 |
< |
try { |
398 |
< |
t.start(); |
399 |
< |
t.interrupt(); |
400 |
< |
t.join(); |
401 |
< |
lock.writeLock().unlock(); |
402 |
< |
} catch(Exception e){ |
403 |
< |
unexpectedException(); |
404 |
< |
} |
699 |
> |
public void testWriteLockInterruptibly() throws InterruptedException { |
700 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
701 |
> |
lock.writeLock().lockInterruptibly(); |
702 |
> |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
703 |
> |
public void realRun() throws InterruptedException { |
704 |
> |
lock.writeLock().lockInterruptibly(); |
705 |
> |
}}); |
706 |
> |
|
707 |
> |
t.start(); |
708 |
> |
Thread.sleep(SHORT_DELAY_MS); |
709 |
> |
t.interrupt(); |
710 |
> |
Thread.sleep(SHORT_DELAY_MS); |
711 |
> |
t.join(); |
712 |
> |
lock.writeLock().unlock(); |
713 |
|
} |
714 |
|
|
715 |
|
/** |
716 |
|
* read lockInterruptibly succeeds if lock free else is interruptible |
717 |
|
*/ |
718 |
< |
public void testReadLockInterruptibly() { |
719 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
720 |
< |
try { |
721 |
< |
lock.writeLock().lockInterruptibly(); |
722 |
< |
} catch(Exception e) { |
723 |
< |
unexpectedException(); |
724 |
< |
} |
725 |
< |
Thread t = new Thread(new Runnable() { |
726 |
< |
public void run() { |
727 |
< |
try { |
728 |
< |
lock.readLock().lockInterruptibly(); |
729 |
< |
threadShouldThrow(); |
730 |
< |
} |
423 |
< |
catch(InterruptedException success) { |
424 |
< |
} |
425 |
< |
} |
426 |
< |
}); |
427 |
< |
try { |
428 |
< |
t.start(); |
429 |
< |
t.interrupt(); |
430 |
< |
t.join(); |
431 |
< |
lock.writeLock().unlock(); |
432 |
< |
} catch(Exception e){ |
433 |
< |
unexpectedException(); |
434 |
< |
} |
718 |
> |
public void testReadLockInterruptibly() throws InterruptedException { |
719 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
720 |
> |
lock.writeLock().lockInterruptibly(); |
721 |
> |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
722 |
> |
public void realRun() throws InterruptedException { |
723 |
> |
lock.readLock().lockInterruptibly(); |
724 |
> |
}}); |
725 |
> |
|
726 |
> |
t.start(); |
727 |
> |
Thread.sleep(SHORT_DELAY_MS); |
728 |
> |
t.interrupt(); |
729 |
> |
t.join(); |
730 |
> |
lock.writeLock().unlock(); |
731 |
|
} |
732 |
|
|
733 |
|
/** |
734 |
|
* Calling await without holding lock throws IllegalMonitorStateException |
735 |
|
*/ |
736 |
< |
public void testAwait_IllegalMonitor() { |
737 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
736 |
> |
public void testAwait_IllegalMonitor() throws InterruptedException { |
737 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
738 |
|
final Condition c = lock.writeLock().newCondition(); |
739 |
|
try { |
740 |
|
c.await(); |
741 |
|
shouldThrow(); |
742 |
< |
} |
447 |
< |
catch (IllegalMonitorStateException success) { |
448 |
< |
} |
449 |
< |
catch (Exception ex) { |
450 |
< |
shouldThrow(); |
451 |
< |
} |
742 |
> |
} catch (IllegalMonitorStateException success) {} |
743 |
|
} |
744 |
|
|
745 |
|
/** |
746 |
|
* Calling signal without holding lock throws IllegalMonitorStateException |
747 |
|
*/ |
748 |
|
public void testSignal_IllegalMonitor() { |
749 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
749 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
750 |
|
final Condition c = lock.writeLock().newCondition(); |
751 |
|
try { |
752 |
|
c.signal(); |
753 |
|
shouldThrow(); |
754 |
< |
} |
464 |
< |
catch (IllegalMonitorStateException success) { |
465 |
< |
} |
466 |
< |
catch (Exception ex) { |
467 |
< |
unexpectedException(); |
468 |
< |
} |
754 |
> |
} catch (IllegalMonitorStateException success) {} |
755 |
|
} |
756 |
|
|
757 |
|
/** |
758 |
|
* awaitNanos without a signal times out |
759 |
|
*/ |
760 |
< |
public void testAwaitNanos_Timeout() { |
761 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
760 |
> |
public void testAwaitNanos_Timeout() throws InterruptedException { |
761 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
762 |
|
final Condition c = lock.writeLock().newCondition(); |
763 |
< |
try { |
764 |
< |
lock.writeLock().lock(); |
765 |
< |
long t = c.awaitNanos(100); |
766 |
< |
assertTrue(t <= 0); |
767 |
< |
lock.writeLock().unlock(); |
482 |
< |
} |
483 |
< |
catch (Exception ex) { |
484 |
< |
unexpectedException(); |
485 |
< |
} |
763 |
> |
|
764 |
> |
lock.writeLock().lock(); |
765 |
> |
long t = c.awaitNanos(100); |
766 |
> |
assertTrue(t <= 0); |
767 |
> |
lock.writeLock().unlock(); |
768 |
|
} |
769 |
|
|
770 |
|
|
771 |
|
/** |
772 |
|
* timed await without a signal times out |
773 |
|
*/ |
774 |
< |
public void testAwait_Timeout() { |
775 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
774 |
> |
public void testAwait_Timeout() throws InterruptedException { |
775 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
776 |
|
final Condition c = lock.writeLock().newCondition(); |
777 |
< |
try { |
778 |
< |
lock.writeLock().lock(); |
779 |
< |
assertFalse(c.await(10, TimeUnit.MILLISECONDS)); |
498 |
< |
lock.writeLock().unlock(); |
499 |
< |
} |
500 |
< |
catch (Exception ex) { |
501 |
< |
unexpectedException(); |
502 |
< |
} |
777 |
> |
lock.writeLock().lock(); |
778 |
> |
assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS)); |
779 |
> |
lock.writeLock().unlock(); |
780 |
|
} |
781 |
|
|
782 |
|
/** |
783 |
|
* awaitUntil without a signal times out |
784 |
|
*/ |
785 |
< |
public void testAwaitUntil_Timeout() { |
786 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
785 |
> |
public void testAwaitUntil_Timeout() throws InterruptedException { |
786 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
787 |
|
final Condition c = lock.writeLock().newCondition(); |
788 |
< |
try { |
789 |
< |
lock.writeLock().lock(); |
790 |
< |
java.util.Date d = new java.util.Date(); |
791 |
< |
assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10))); |
515 |
< |
lock.writeLock().unlock(); |
516 |
< |
} |
517 |
< |
catch (Exception ex) { |
518 |
< |
unexpectedException(); |
519 |
< |
} |
788 |
> |
lock.writeLock().lock(); |
789 |
> |
java.util.Date d = new java.util.Date(); |
790 |
> |
assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10))); |
791 |
> |
lock.writeLock().unlock(); |
792 |
|
} |
793 |
|
|
794 |
|
/** |
795 |
|
* await returns when signalled |
796 |
|
*/ |
797 |
< |
public void testAwait() { |
798 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
797 |
> |
public void testAwait() throws InterruptedException { |
798 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
799 |
|
final Condition c = lock.writeLock().newCondition(); |
800 |
< |
Thread t = new Thread(new Runnable() { |
801 |
< |
public void run() { |
802 |
< |
try { |
803 |
< |
lock.writeLock().lock(); |
804 |
< |
c.await(); |
805 |
< |
lock.writeLock().unlock(); |
806 |
< |
} |
807 |
< |
catch(InterruptedException e) { |
808 |
< |
threadUnexpectedException(); |
809 |
< |
} |
810 |
< |
} |
811 |
< |
}); |
800 |
> |
Thread t = new Thread(new CheckedRunnable() { |
801 |
> |
public void realRun() throws InterruptedException { |
802 |
> |
lock.writeLock().lock(); |
803 |
> |
c.await(); |
804 |
> |
lock.writeLock().unlock(); |
805 |
> |
}}); |
806 |
> |
|
807 |
> |
t.start(); |
808 |
> |
Thread.sleep(SHORT_DELAY_MS); |
809 |
> |
lock.writeLock().lock(); |
810 |
> |
c.signal(); |
811 |
> |
lock.writeLock().unlock(); |
812 |
> |
t.join(SHORT_DELAY_MS); |
813 |
> |
assertFalse(t.isAlive()); |
814 |
> |
} |
815 |
> |
|
816 |
> |
/** A helper class for uninterruptible wait tests */ |
817 |
> |
class UninterruptableThread extends Thread { |
818 |
> |
private Lock lock; |
819 |
> |
private Condition c; |
820 |
> |
|
821 |
> |
public volatile boolean canAwake = false; |
822 |
> |
public volatile boolean interrupted = false; |
823 |
> |
public volatile boolean lockStarted = false; |
824 |
> |
|
825 |
> |
public UninterruptableThread(Lock lock, Condition c) { |
826 |
> |
this.lock = lock; |
827 |
> |
this.c = c; |
828 |
> |
} |
829 |
> |
|
830 |
> |
public synchronized void run() { |
831 |
> |
lock.lock(); |
832 |
> |
lockStarted = true; |
833 |
> |
|
834 |
> |
while (!canAwake) { |
835 |
> |
c.awaitUninterruptibly(); |
836 |
> |
} |
837 |
|
|
838 |
< |
try { |
839 |
< |
t.start(); |
543 |
< |
Thread.sleep(SHORT_DELAY_MS); |
544 |
< |
lock.writeLock().lock(); |
545 |
< |
c.signal(); |
546 |
< |
lock.writeLock().unlock(); |
547 |
< |
t.join(SHORT_DELAY_MS); |
548 |
< |
assertFalse(t.isAlive()); |
549 |
< |
} |
550 |
< |
catch (Exception ex) { |
551 |
< |
unexpectedException(); |
838 |
> |
interrupted = isInterrupted(); |
839 |
> |
lock.unlock(); |
840 |
|
} |
841 |
|
} |
842 |
|
|
843 |
|
/** |
844 |
|
* awaitUninterruptibly doesn't abort on interrupt |
845 |
|
*/ |
846 |
< |
public void testAwaitUninterruptibly() { |
847 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
846 |
> |
public void testAwaitUninterruptibly() throws InterruptedException { |
847 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
848 |
|
final Condition c = lock.writeLock().newCondition(); |
849 |
< |
Thread t = new Thread(new Runnable() { |
850 |
< |
public void run() { |
851 |
< |
lock.writeLock().lock(); |
852 |
< |
c.awaitUninterruptibly(); |
853 |
< |
lock.writeLock().unlock(); |
854 |
< |
} |
855 |
< |
}); |
849 |
> |
UninterruptableThread thread = new UninterruptableThread(lock.writeLock(), c); |
850 |
> |
|
851 |
> |
thread.start(); |
852 |
> |
|
853 |
> |
while (!thread.lockStarted) { |
854 |
> |
Thread.sleep(100); |
855 |
> |
} |
856 |
|
|
857 |
+ |
lock.writeLock().lock(); |
858 |
|
try { |
859 |
< |
t.start(); |
860 |
< |
Thread.sleep(SHORT_DELAY_MS); |
572 |
< |
t.interrupt(); |
573 |
< |
lock.writeLock().lock(); |
859 |
> |
thread.interrupt(); |
860 |
> |
thread.canAwake = true; |
861 |
|
c.signal(); |
862 |
+ |
} finally { |
863 |
|
lock.writeLock().unlock(); |
576 |
– |
assert(t.isInterrupted()); |
577 |
– |
t.join(SHORT_DELAY_MS); |
578 |
– |
assertFalse(t.isAlive()); |
579 |
– |
} |
580 |
– |
catch (Exception ex) { |
581 |
– |
unexpectedException(); |
864 |
|
} |
865 |
+ |
|
866 |
+ |
thread.join(); |
867 |
+ |
assertTrue(thread.interrupted); |
868 |
+ |
assertFalse(thread.isAlive()); |
869 |
|
} |
870 |
|
|
871 |
|
/** |
872 |
|
* await is interruptible |
873 |
|
*/ |
874 |
< |
public void testAwait_Interrupt() { |
875 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
874 |
> |
public void testAwait_Interrupt() throws InterruptedException { |
875 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
876 |
|
final Condition c = lock.writeLock().newCondition(); |
877 |
< |
Thread t = new Thread(new Runnable() { |
878 |
< |
public void run() { |
879 |
< |
try { |
880 |
< |
lock.writeLock().lock(); |
881 |
< |
c.await(); |
882 |
< |
lock.writeLock().unlock(); |
883 |
< |
threadShouldThrow(); |
884 |
< |
} |
885 |
< |
catch(InterruptedException success) { |
886 |
< |
} |
887 |
< |
} |
888 |
< |
}); |
603 |
< |
|
604 |
< |
try { |
605 |
< |
t.start(); |
606 |
< |
Thread.sleep(SHORT_DELAY_MS); |
607 |
< |
t.interrupt(); |
608 |
< |
t.join(SHORT_DELAY_MS); |
609 |
< |
assertFalse(t.isAlive()); |
610 |
< |
} |
611 |
< |
catch (Exception ex) { |
612 |
< |
unexpectedException(); |
613 |
< |
} |
877 |
> |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
878 |
> |
public void realRun() throws InterruptedException { |
879 |
> |
lock.writeLock().lock(); |
880 |
> |
c.await(); |
881 |
> |
lock.writeLock().unlock(); |
882 |
> |
}}); |
883 |
> |
|
884 |
> |
t.start(); |
885 |
> |
Thread.sleep(SHORT_DELAY_MS); |
886 |
> |
t.interrupt(); |
887 |
> |
t.join(SHORT_DELAY_MS); |
888 |
> |
assertFalse(t.isAlive()); |
889 |
|
} |
890 |
|
|
891 |
|
/** |
892 |
|
* awaitNanos is interruptible |
893 |
|
*/ |
894 |
< |
public void testAwaitNanos_Interrupt() { |
895 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
894 |
> |
public void testAwaitNanos_Interrupt() throws InterruptedException { |
895 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
896 |
|
final Condition c = lock.writeLock().newCondition(); |
897 |
< |
Thread t = new Thread(new Runnable() { |
898 |
< |
public void run() { |
899 |
< |
try { |
900 |
< |
lock.writeLock().lock(); |
901 |
< |
c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000); |
902 |
< |
lock.writeLock().unlock(); |
903 |
< |
threadShouldThrow(); |
904 |
< |
} |
905 |
< |
catch(InterruptedException success) { |
906 |
< |
} |
907 |
< |
} |
908 |
< |
}); |
634 |
< |
|
635 |
< |
try { |
636 |
< |
t.start(); |
637 |
< |
Thread.sleep(SHORT_DELAY_MS); |
638 |
< |
t.interrupt(); |
639 |
< |
t.join(SHORT_DELAY_MS); |
640 |
< |
assertFalse(t.isAlive()); |
641 |
< |
} |
642 |
< |
catch (Exception ex) { |
643 |
< |
unexpectedException(); |
644 |
< |
} |
897 |
> |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
898 |
> |
public void realRun() throws InterruptedException { |
899 |
> |
lock.writeLock().lock(); |
900 |
> |
c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000); |
901 |
> |
lock.writeLock().unlock(); |
902 |
> |
}}); |
903 |
> |
|
904 |
> |
t.start(); |
905 |
> |
Thread.sleep(SHORT_DELAY_MS); |
906 |
> |
t.interrupt(); |
907 |
> |
t.join(SHORT_DELAY_MS); |
908 |
> |
assertFalse(t.isAlive()); |
909 |
|
} |
910 |
|
|
911 |
|
/** |
912 |
|
* awaitUntil is interruptible |
913 |
|
*/ |
914 |
< |
public void testAwaitUntil_Interrupt() { |
915 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
914 |
> |
public void testAwaitUntil_Interrupt() throws InterruptedException { |
915 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
916 |
|
final Condition c = lock.writeLock().newCondition(); |
917 |
< |
Thread t = new Thread(new Runnable() { |
918 |
< |
public void run() { |
919 |
< |
try { |
920 |
< |
lock.writeLock().lock(); |
921 |
< |
java.util.Date d = new java.util.Date(); |
922 |
< |
c.awaitUntil(new java.util.Date(d.getTime() + 10000)); |
923 |
< |
lock.writeLock().unlock(); |
924 |
< |
threadShouldThrow(); |
925 |
< |
} |
926 |
< |
catch(InterruptedException success) { |
927 |
< |
} |
928 |
< |
} |
929 |
< |
}); |
666 |
< |
|
667 |
< |
try { |
668 |
< |
t.start(); |
669 |
< |
Thread.sleep(SHORT_DELAY_MS); |
670 |
< |
t.interrupt(); |
671 |
< |
t.join(SHORT_DELAY_MS); |
672 |
< |
assertFalse(t.isAlive()); |
673 |
< |
} |
674 |
< |
catch (Exception ex) { |
675 |
< |
unexpectedException(); |
676 |
< |
} |
917 |
> |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
918 |
> |
public void realRun() throws InterruptedException { |
919 |
> |
lock.writeLock().lock(); |
920 |
> |
java.util.Date d = new java.util.Date(); |
921 |
> |
c.awaitUntil(new java.util.Date(d.getTime() + 10000)); |
922 |
> |
lock.writeLock().unlock(); |
923 |
> |
}}); |
924 |
> |
|
925 |
> |
t.start(); |
926 |
> |
Thread.sleep(SHORT_DELAY_MS); |
927 |
> |
t.interrupt(); |
928 |
> |
t.join(SHORT_DELAY_MS); |
929 |
> |
assertFalse(t.isAlive()); |
930 |
|
} |
931 |
|
|
932 |
|
/** |
933 |
|
* signalAll wakes up all threads |
934 |
|
*/ |
935 |
< |
public void testSignalAll() { |
936 |
< |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
935 |
> |
public void testSignalAll() throws InterruptedException { |
936 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
937 |
|
final Condition c = lock.writeLock().newCondition(); |
938 |
< |
Thread t1 = new Thread(new Runnable() { |
939 |
< |
public void run() { |
940 |
< |
try { |
941 |
< |
lock.writeLock().lock(); |
942 |
< |
c.await(); |
943 |
< |
lock.writeLock().unlock(); |
944 |
< |
} |
945 |
< |
catch(InterruptedException e) { |
946 |
< |
threadUnexpectedException(); |
947 |
< |
} |
948 |
< |
} |
949 |
< |
}); |
950 |
< |
|
951 |
< |
Thread t2 = new Thread(new Runnable() { |
952 |
< |
public void run() { |
953 |
< |
try { |
954 |
< |
lock.writeLock().lock(); |
955 |
< |
c.await(); |
956 |
< |
lock.writeLock().unlock(); |
957 |
< |
} |
958 |
< |
catch(InterruptedException e) { |
959 |
< |
threadUnexpectedException(); |
960 |
< |
} |
961 |
< |
} |
709 |
< |
}); |
710 |
< |
|
711 |
< |
try { |
712 |
< |
t1.start(); |
713 |
< |
t2.start(); |
714 |
< |
Thread.sleep(SHORT_DELAY_MS); |
715 |
< |
lock.writeLock().lock(); |
716 |
< |
c.signalAll(); |
717 |
< |
lock.writeLock().unlock(); |
718 |
< |
t1.join(SHORT_DELAY_MS); |
719 |
< |
t2.join(SHORT_DELAY_MS); |
720 |
< |
assertFalse(t1.isAlive()); |
721 |
< |
assertFalse(t2.isAlive()); |
722 |
< |
} |
723 |
< |
catch (Exception ex) { |
724 |
< |
unexpectedException(); |
725 |
< |
} |
938 |
> |
Thread t1 = new Thread(new CheckedRunnable() { |
939 |
> |
public void realRun() throws InterruptedException { |
940 |
> |
lock.writeLock().lock(); |
941 |
> |
c.await(); |
942 |
> |
lock.writeLock().unlock(); |
943 |
> |
}}); |
944 |
> |
|
945 |
> |
Thread t2 = new Thread(new CheckedRunnable() { |
946 |
> |
public void realRun() throws InterruptedException { |
947 |
> |
lock.writeLock().lock(); |
948 |
> |
c.await(); |
949 |
> |
lock.writeLock().unlock(); |
950 |
> |
}}); |
951 |
> |
|
952 |
> |
t1.start(); |
953 |
> |
t2.start(); |
954 |
> |
Thread.sleep(SHORT_DELAY_MS); |
955 |
> |
lock.writeLock().lock(); |
956 |
> |
c.signalAll(); |
957 |
> |
lock.writeLock().unlock(); |
958 |
> |
t1.join(SHORT_DELAY_MS); |
959 |
> |
t2.join(SHORT_DELAY_MS); |
960 |
> |
assertFalse(t1.isAlive()); |
961 |
> |
assertFalse(t2.isAlive()); |
962 |
|
} |
963 |
|
|
964 |
|
/** |
965 |
|
* A serialized lock deserializes as unlocked |
966 |
|
*/ |
967 |
< |
public void testSerialization() { |
967 |
> |
public void testSerialization() throws Exception { |
968 |
|
ReentrantReadWriteLock l = new ReentrantReadWriteLock(); |
969 |
|
l.readLock().lock(); |
970 |
|
l.readLock().unlock(); |
971 |
|
|
972 |
+ |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
973 |
+ |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
974 |
+ |
out.writeObject(l); |
975 |
+ |
out.close(); |
976 |
+ |
|
977 |
+ |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
978 |
+ |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
979 |
+ |
ReentrantReadWriteLock r = (ReentrantReadWriteLock) in.readObject(); |
980 |
+ |
r.readLock().lock(); |
981 |
+ |
r.readLock().unlock(); |
982 |
+ |
} |
983 |
+ |
|
984 |
+ |
/** |
985 |
+ |
* hasQueuedThreads reports whether there are waiting threads |
986 |
+ |
*/ |
987 |
+ |
public void testhasQueuedThreads() throws InterruptedException { |
988 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
989 |
+ |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
990 |
+ |
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
991 |
+ |
assertFalse(lock.hasQueuedThreads()); |
992 |
+ |
lock.writeLock().lock(); |
993 |
+ |
t1.start(); |
994 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
995 |
+ |
assertTrue(lock.hasQueuedThreads()); |
996 |
+ |
t2.start(); |
997 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
998 |
+ |
assertTrue(lock.hasQueuedThreads()); |
999 |
+ |
t1.interrupt(); |
1000 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1001 |
+ |
assertTrue(lock.hasQueuedThreads()); |
1002 |
+ |
lock.writeLock().unlock(); |
1003 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1004 |
+ |
assertFalse(lock.hasQueuedThreads()); |
1005 |
+ |
t1.join(); |
1006 |
+ |
t2.join(); |
1007 |
+ |
} |
1008 |
+ |
|
1009 |
+ |
/** |
1010 |
+ |
* hasQueuedThread(null) throws NPE |
1011 |
+ |
*/ |
1012 |
+ |
public void testHasQueuedThreadNPE() { |
1013 |
+ |
final ReentrantReadWriteLock sync = new ReentrantReadWriteLock(); |
1014 |
|
try { |
1015 |
< |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
1016 |
< |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
1017 |
< |
out.writeObject(l); |
1018 |
< |
out.close(); |
1019 |
< |
|
1020 |
< |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
1021 |
< |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
1022 |
< |
ReentrantReadWriteLock r = (ReentrantReadWriteLock) in.readObject(); |
1023 |
< |
r.readLock().lock(); |
1024 |
< |
r.readLock().unlock(); |
1025 |
< |
} catch(Exception e){ |
1026 |
< |
e.printStackTrace(); |
1027 |
< |
unexpectedException(); |
1028 |
< |
} |
1015 |
> |
sync.hasQueuedThread(null); |
1016 |
> |
shouldThrow(); |
1017 |
> |
} catch (NullPointerException success) {} |
1018 |
> |
} |
1019 |
> |
|
1020 |
> |
/** |
1021 |
> |
* hasQueuedThread reports whether a thread is queued. |
1022 |
> |
*/ |
1023 |
> |
public void testHasQueuedThread() throws InterruptedException { |
1024 |
> |
final ReentrantReadWriteLock sync = new ReentrantReadWriteLock(); |
1025 |
> |
Thread t1 = new Thread(new InterruptedLockRunnable(sync)); |
1026 |
> |
Thread t2 = new Thread(new InterruptibleLockRunnable(sync)); |
1027 |
> |
assertFalse(sync.hasQueuedThread(t1)); |
1028 |
> |
assertFalse(sync.hasQueuedThread(t2)); |
1029 |
> |
sync.writeLock().lock(); |
1030 |
> |
t1.start(); |
1031 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1032 |
> |
assertTrue(sync.hasQueuedThread(t1)); |
1033 |
> |
t2.start(); |
1034 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1035 |
> |
assertTrue(sync.hasQueuedThread(t1)); |
1036 |
> |
assertTrue(sync.hasQueuedThread(t2)); |
1037 |
> |
t1.interrupt(); |
1038 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1039 |
> |
assertFalse(sync.hasQueuedThread(t1)); |
1040 |
> |
assertTrue(sync.hasQueuedThread(t2)); |
1041 |
> |
sync.writeLock().unlock(); |
1042 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1043 |
> |
assertFalse(sync.hasQueuedThread(t1)); |
1044 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1045 |
> |
assertFalse(sync.hasQueuedThread(t2)); |
1046 |
> |
t1.join(); |
1047 |
> |
t2.join(); |
1048 |
> |
} |
1049 |
> |
|
1050 |
> |
|
1051 |
> |
/** |
1052 |
> |
* getQueueLength reports number of waiting threads |
1053 |
> |
*/ |
1054 |
> |
public void testGetQueueLength() throws InterruptedException { |
1055 |
> |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1056 |
> |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
1057 |
> |
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
1058 |
> |
assertEquals(0, lock.getQueueLength()); |
1059 |
> |
lock.writeLock().lock(); |
1060 |
> |
t1.start(); |
1061 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1062 |
> |
assertEquals(1, lock.getQueueLength()); |
1063 |
> |
t2.start(); |
1064 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1065 |
> |
assertEquals(2, lock.getQueueLength()); |
1066 |
> |
t1.interrupt(); |
1067 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1068 |
> |
assertEquals(1, lock.getQueueLength()); |
1069 |
> |
lock.writeLock().unlock(); |
1070 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1071 |
> |
assertEquals(0, lock.getQueueLength()); |
1072 |
> |
t1.join(); |
1073 |
> |
t2.join(); |
1074 |
> |
} |
1075 |
> |
|
1076 |
> |
/** |
1077 |
> |
* getQueuedThreads includes waiting threads |
1078 |
> |
*/ |
1079 |
> |
public void testGetQueuedThreads() throws InterruptedException { |
1080 |
> |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1081 |
> |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
1082 |
> |
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
1083 |
> |
assertTrue(lock.getQueuedThreads().isEmpty()); |
1084 |
> |
lock.writeLock().lock(); |
1085 |
> |
assertTrue(lock.getQueuedThreads().isEmpty()); |
1086 |
> |
t1.start(); |
1087 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1088 |
> |
assertTrue(lock.getQueuedThreads().contains(t1)); |
1089 |
> |
t2.start(); |
1090 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1091 |
> |
assertTrue(lock.getQueuedThreads().contains(t1)); |
1092 |
> |
assertTrue(lock.getQueuedThreads().contains(t2)); |
1093 |
> |
t1.interrupt(); |
1094 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1095 |
> |
assertFalse(lock.getQueuedThreads().contains(t1)); |
1096 |
> |
assertTrue(lock.getQueuedThreads().contains(t2)); |
1097 |
> |
lock.writeLock().unlock(); |
1098 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1099 |
> |
assertTrue(lock.getQueuedThreads().isEmpty()); |
1100 |
> |
t1.join(); |
1101 |
> |
t2.join(); |
1102 |
|
} |
1103 |
|
|
1104 |
+ |
/** |
1105 |
+ |
* hasWaiters throws NPE if null |
1106 |
+ |
*/ |
1107 |
+ |
public void testHasWaitersNPE() { |
1108 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1109 |
+ |
try { |
1110 |
+ |
lock.hasWaiters(null); |
1111 |
+ |
shouldThrow(); |
1112 |
+ |
} catch (NullPointerException success) {} |
1113 |
+ |
} |
1114 |
+ |
|
1115 |
+ |
/** |
1116 |
+ |
* getWaitQueueLength throws NPE if null |
1117 |
+ |
*/ |
1118 |
+ |
public void testGetWaitQueueLengthNPE() { |
1119 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1120 |
+ |
try { |
1121 |
+ |
lock.getWaitQueueLength(null); |
1122 |
+ |
shouldThrow(); |
1123 |
+ |
} catch (NullPointerException success) {} |
1124 |
+ |
} |
1125 |
+ |
|
1126 |
+ |
|
1127 |
+ |
/** |
1128 |
+ |
* getWaitingThreads throws NPE if null |
1129 |
+ |
*/ |
1130 |
+ |
public void testGetWaitingThreadsNPE() { |
1131 |
+ |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1132 |
+ |
try { |
1133 |
+ |
lock.getWaitingThreads(null); |
1134 |
+ |
shouldThrow(); |
1135 |
+ |
} catch (NullPointerException success) {} |
1136 |
+ |
} |
1137 |
+ |
|
1138 |
+ |
/** |
1139 |
+ |
* hasWaiters throws IAE if not owned |
1140 |
+ |
*/ |
1141 |
+ |
public void testHasWaitersIAE() { |
1142 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1143 |
+ |
final Condition c = lock.writeLock().newCondition(); |
1144 |
+ |
final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock(); |
1145 |
+ |
try { |
1146 |
+ |
lock2.hasWaiters(c); |
1147 |
+ |
shouldThrow(); |
1148 |
+ |
} catch (IllegalArgumentException success) {} |
1149 |
+ |
} |
1150 |
+ |
|
1151 |
+ |
/** |
1152 |
+ |
* hasWaiters throws IMSE if not locked |
1153 |
+ |
*/ |
1154 |
+ |
public void testHasWaitersIMSE() { |
1155 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1156 |
+ |
final Condition c = lock.writeLock().newCondition(); |
1157 |
+ |
try { |
1158 |
+ |
lock.hasWaiters(c); |
1159 |
+ |
shouldThrow(); |
1160 |
+ |
} catch (IllegalMonitorStateException success) {} |
1161 |
+ |
} |
1162 |
+ |
|
1163 |
+ |
|
1164 |
+ |
/** |
1165 |
+ |
* getWaitQueueLength throws IAE if not owned |
1166 |
+ |
*/ |
1167 |
+ |
public void testGetWaitQueueLengthIAE() { |
1168 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1169 |
+ |
final Condition c = lock.writeLock().newCondition(); |
1170 |
+ |
final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock(); |
1171 |
+ |
try { |
1172 |
+ |
lock2.getWaitQueueLength(c); |
1173 |
+ |
shouldThrow(); |
1174 |
+ |
} catch (IllegalArgumentException success) {} |
1175 |
+ |
} |
1176 |
+ |
|
1177 |
+ |
/** |
1178 |
+ |
* getWaitQueueLength throws IMSE if not locked |
1179 |
+ |
*/ |
1180 |
+ |
public void testGetWaitQueueLengthIMSE() { |
1181 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1182 |
+ |
final Condition c = lock.writeLock().newCondition(); |
1183 |
+ |
try { |
1184 |
+ |
lock.getWaitQueueLength(c); |
1185 |
+ |
shouldThrow(); |
1186 |
+ |
} catch (IllegalMonitorStateException success) {} |
1187 |
+ |
} |
1188 |
+ |
|
1189 |
+ |
|
1190 |
+ |
/** |
1191 |
+ |
* getWaitingThreads throws IAE if not owned |
1192 |
+ |
*/ |
1193 |
+ |
public void testGetWaitingThreadsIAE() { |
1194 |
+ |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1195 |
+ |
final Condition c = lock.writeLock().newCondition(); |
1196 |
+ |
final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock(); |
1197 |
+ |
try { |
1198 |
+ |
lock2.getWaitingThreads(c); |
1199 |
+ |
shouldThrow(); |
1200 |
+ |
} catch (IllegalArgumentException success) {} |
1201 |
+ |
} |
1202 |
+ |
|
1203 |
+ |
/** |
1204 |
+ |
* getWaitingThreads throws IMSE if not locked |
1205 |
+ |
*/ |
1206 |
+ |
public void testGetWaitingThreadsIMSE() { |
1207 |
+ |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1208 |
+ |
final Condition c = lock.writeLock().newCondition(); |
1209 |
+ |
try { |
1210 |
+ |
lock.getWaitingThreads(c); |
1211 |
+ |
shouldThrow(); |
1212 |
+ |
} catch (IllegalMonitorStateException success) {} |
1213 |
+ |
} |
1214 |
+ |
|
1215 |
+ |
|
1216 |
+ |
/** |
1217 |
+ |
* hasWaiters returns true when a thread is waiting, else false |
1218 |
+ |
*/ |
1219 |
+ |
public void testHasWaiters() throws InterruptedException { |
1220 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1221 |
+ |
final Condition c = lock.writeLock().newCondition(); |
1222 |
+ |
Thread t = new Thread(new CheckedRunnable() { |
1223 |
+ |
public void realRun() throws InterruptedException { |
1224 |
+ |
lock.writeLock().lock(); |
1225 |
+ |
threadAssertFalse(lock.hasWaiters(c)); |
1226 |
+ |
threadAssertEquals(0, lock.getWaitQueueLength(c)); |
1227 |
+ |
c.await(); |
1228 |
+ |
lock.writeLock().unlock(); |
1229 |
+ |
}}); |
1230 |
+ |
|
1231 |
+ |
t.start(); |
1232 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1233 |
+ |
lock.writeLock().lock(); |
1234 |
+ |
assertTrue(lock.hasWaiters(c)); |
1235 |
+ |
assertEquals(1, lock.getWaitQueueLength(c)); |
1236 |
+ |
c.signal(); |
1237 |
+ |
lock.writeLock().unlock(); |
1238 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1239 |
+ |
lock.writeLock().lock(); |
1240 |
+ |
assertFalse(lock.hasWaiters(c)); |
1241 |
+ |
assertEquals(0, lock.getWaitQueueLength(c)); |
1242 |
+ |
lock.writeLock().unlock(); |
1243 |
+ |
t.join(SHORT_DELAY_MS); |
1244 |
+ |
assertFalse(t.isAlive()); |
1245 |
+ |
} |
1246 |
+ |
|
1247 |
+ |
/** |
1248 |
+ |
* getWaitQueueLength returns number of waiting threads |
1249 |
+ |
*/ |
1250 |
+ |
public void testGetWaitQueueLength() throws InterruptedException { |
1251 |
+ |
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1252 |
+ |
final Condition c = lock.writeLock().newCondition(); |
1253 |
+ |
Thread t = new Thread(new CheckedRunnable() { |
1254 |
+ |
public void realRun() throws InterruptedException { |
1255 |
+ |
lock.writeLock().lock(); |
1256 |
+ |
threadAssertFalse(lock.hasWaiters(c)); |
1257 |
+ |
threadAssertEquals(0, lock.getWaitQueueLength(c)); |
1258 |
+ |
c.await(); |
1259 |
+ |
lock.writeLock().unlock(); |
1260 |
+ |
}}); |
1261 |
+ |
|
1262 |
+ |
t.start(); |
1263 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1264 |
+ |
lock.writeLock().lock(); |
1265 |
+ |
assertTrue(lock.hasWaiters(c)); |
1266 |
+ |
assertEquals(1, lock.getWaitQueueLength(c)); |
1267 |
+ |
c.signal(); |
1268 |
+ |
lock.writeLock().unlock(); |
1269 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1270 |
+ |
lock.writeLock().lock(); |
1271 |
+ |
assertFalse(lock.hasWaiters(c)); |
1272 |
+ |
assertEquals(0, lock.getWaitQueueLength(c)); |
1273 |
+ |
lock.writeLock().unlock(); |
1274 |
+ |
t.join(SHORT_DELAY_MS); |
1275 |
+ |
assertFalse(t.isAlive()); |
1276 |
+ |
} |
1277 |
+ |
|
1278 |
+ |
|
1279 |
+ |
/** |
1280 |
+ |
* getWaitingThreads returns only and all waiting threads |
1281 |
+ |
*/ |
1282 |
+ |
public void testGetWaitingThreads() throws InterruptedException { |
1283 |
+ |
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(); |
1284 |
+ |
final Condition c = lock.writeLock().newCondition(); |
1285 |
+ |
Thread t1 = new Thread(new CheckedRunnable() { |
1286 |
+ |
public void realRun() throws InterruptedException { |
1287 |
+ |
lock.writeLock().lock(); |
1288 |
+ |
threadAssertTrue(lock.getWaitingThreads(c).isEmpty()); |
1289 |
+ |
c.await(); |
1290 |
+ |
lock.writeLock().unlock(); |
1291 |
+ |
}}); |
1292 |
+ |
|
1293 |
+ |
Thread t2 = new Thread(new CheckedRunnable() { |
1294 |
+ |
public void realRun() throws InterruptedException { |
1295 |
+ |
lock.writeLock().lock(); |
1296 |
+ |
threadAssertFalse(lock.getWaitingThreads(c).isEmpty()); |
1297 |
+ |
c.await(); |
1298 |
+ |
lock.writeLock().unlock(); |
1299 |
+ |
}}); |
1300 |
+ |
|
1301 |
+ |
lock.writeLock().lock(); |
1302 |
+ |
assertTrue(lock.getWaitingThreads(c).isEmpty()); |
1303 |
+ |
lock.writeLock().unlock(); |
1304 |
+ |
t1.start(); |
1305 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1306 |
+ |
t2.start(); |
1307 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1308 |
+ |
lock.writeLock().lock(); |
1309 |
+ |
assertTrue(lock.hasWaiters(c)); |
1310 |
+ |
assertTrue(lock.getWaitingThreads(c).contains(t1)); |
1311 |
+ |
assertTrue(lock.getWaitingThreads(c).contains(t2)); |
1312 |
+ |
c.signalAll(); |
1313 |
+ |
lock.writeLock().unlock(); |
1314 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
1315 |
+ |
lock.writeLock().lock(); |
1316 |
+ |
assertFalse(lock.hasWaiters(c)); |
1317 |
+ |
assertTrue(lock.getWaitingThreads(c).isEmpty()); |
1318 |
+ |
lock.writeLock().unlock(); |
1319 |
+ |
t1.join(SHORT_DELAY_MS); |
1320 |
+ |
t2.join(SHORT_DELAY_MS); |
1321 |
+ |
assertFalse(t1.isAlive()); |
1322 |
+ |
assertFalse(t2.isAlive()); |
1323 |
+ |
} |
1324 |
+ |
|
1325 |
+ |
/** |
1326 |
+ |
* toString indicates current lock state |
1327 |
+ |
*/ |
1328 |
+ |
public void testToString() { |
1329 |
+ |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1330 |
+ |
String us = lock.toString(); |
1331 |
+ |
assertTrue(us.indexOf("Write locks = 0") >= 0); |
1332 |
+ |
assertTrue(us.indexOf("Read locks = 0") >= 0); |
1333 |
+ |
lock.writeLock().lock(); |
1334 |
+ |
String ws = lock.toString(); |
1335 |
+ |
assertTrue(ws.indexOf("Write locks = 1") >= 0); |
1336 |
+ |
assertTrue(ws.indexOf("Read locks = 0") >= 0); |
1337 |
+ |
lock.writeLock().unlock(); |
1338 |
+ |
lock.readLock().lock(); |
1339 |
+ |
lock.readLock().lock(); |
1340 |
+ |
String rs = lock.toString(); |
1341 |
+ |
assertTrue(rs.indexOf("Write locks = 0") >= 0); |
1342 |
+ |
assertTrue(rs.indexOf("Read locks = 2") >= 0); |
1343 |
+ |
} |
1344 |
+ |
|
1345 |
+ |
/** |
1346 |
+ |
* readLock.toString indicates current lock state |
1347 |
+ |
*/ |
1348 |
+ |
public void testReadLockToString() { |
1349 |
+ |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1350 |
+ |
String us = lock.readLock().toString(); |
1351 |
+ |
assertTrue(us.indexOf("Read locks = 0") >= 0); |
1352 |
+ |
lock.readLock().lock(); |
1353 |
+ |
lock.readLock().lock(); |
1354 |
+ |
String rs = lock.readLock().toString(); |
1355 |
+ |
assertTrue(rs.indexOf("Read locks = 2") >= 0); |
1356 |
+ |
} |
1357 |
+ |
|
1358 |
+ |
/** |
1359 |
+ |
* writeLock.toString indicates current lock state |
1360 |
+ |
*/ |
1361 |
+ |
public void testWriteLockToString() { |
1362 |
+ |
ReentrantReadWriteLock lock = new ReentrantReadWriteLock(); |
1363 |
+ |
String us = lock.writeLock().toString(); |
1364 |
+ |
assertTrue(us.indexOf("Unlocked") >= 0); |
1365 |
+ |
lock.writeLock().lock(); |
1366 |
+ |
String ls = lock.writeLock().toString(); |
1367 |
+ |
assertTrue(ls.indexOf("Locked") >= 0); |
1368 |
+ |
} |
1369 |
|
|
1370 |
|
} |