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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.util.*; |
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import java.io.*; |
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public class ReentrantLockTest extends JSR166TestCase { |
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static int HOLD_COUNT_TEST_LIMIT = 20; |
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|
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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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|
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public static Test suite() { |
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return new TestSuite(ReentrantLockTest.class); |
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return new TestSuite(ReentrantLockTest.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 ReentrantLock lock; |
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InterruptibleLockRunnable(ReentrantLock l) { lock = l; } |
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public void realRun() throws InterruptedException { |
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lock.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 ReentrantLock lock; |
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InterruptedLockRunnable(ReentrantLock l) { lock = l; } |
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public void realRun() throws InterruptedException { |
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lock.lockInterruptibly(); |
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} |
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} |
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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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* Subclass to expose protected methods |
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*/ |
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public void testIllegalMonitorStateException(){ |
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ReentrantLock rl = new ReentrantLock(); |
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try{ |
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rl.unlock(); |
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fail("Should of thown Illegal Monitor State Exception"); |
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static class PublicReentrantLock extends ReentrantLock { |
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PublicReentrantLock() { 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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} catch(IllegalMonitorStateException success){} |
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} |
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|
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/** |
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* Constructor sets given fairness |
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*/ |
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public void testConstructor() { |
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assertFalse(new ReentrantLock().isFair()); |
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assertFalse(new ReentrantLock(false).isFair()); |
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assertTrue(new ReentrantLock(true).isFair()); |
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} |
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|
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/** |
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* locking an unlocked lock succeeds |
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*/ |
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public void testLock() { |
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ReentrantLock rl = new ReentrantLock(); |
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rl.lock(); |
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assertTrue(rl.isLocked()); |
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rl.unlock(); |
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assertFalse(rl.isLocked()); |
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} |
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|
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/* |
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* makes a lock, locks it, tries to aquire the lock in another thread |
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* interrupts that thread and waits for an interrupted Exception to |
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* be thrown. |
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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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ReentrantLock rl = new ReentrantLock(true); |
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rl.lock(); |
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assertTrue(rl.isLocked()); |
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rl.unlock(); |
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} |
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|
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public void testInterruptedException(){ |
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final ReentrantLock lock = new ReentrantLock(); |
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lock.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.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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/** |
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* Unlocking an unlocked lock throws IllegalMonitorStateException |
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*/ |
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public void testUnlock_IllegalMonitorStateException() { |
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ReentrantLock rl = new ReentrantLock(); |
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try { |
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t.start(); |
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t.interrupt(); |
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lock.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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rl.unlock(); |
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shouldThrow(); |
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} catch (IllegalMonitorStateException success) {} |
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} |
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|
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/* |
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* tests for interrupted exception on a timed wait |
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* |
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*/ |
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|
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|
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public void testInterruptedException2(){ |
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final ReentrantLock lock = new ReentrantLock(); |
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lock.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.tryLock(MEDIUM_DELAY_MS,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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} catch(Exception e){ |
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fail("unexpected exception"); |
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} |
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/** |
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* tryLock on an unlocked lock succeeds |
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*/ |
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public void testTryLock() { |
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ReentrantLock rl = new ReentrantLock(); |
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assertTrue(rl.tryLock()); |
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assertTrue(rl.isLocked()); |
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rl.unlock(); |
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} |
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|
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public void testTryLockWhenLocked() { |
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final ReentrantLock lock = new ReentrantLock(); |
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lock.lock(); |
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Thread t = new Thread(new Runnable() { |
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public void run(){ |
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threadAssertFalse(lock.tryLock()); |
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} |
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}); |
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try { |
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t.start(); |
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t.join(); |
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lock.unlock(); |
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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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* hasQueuedThreads reports whether there are waiting threads |
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*/ |
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public void testhasQueuedThreads() throws InterruptedException { |
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final ReentrantLock lock = new ReentrantLock(); |
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Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
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Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
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assertFalse(lock.hasQueuedThreads()); |
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lock.lock(); |
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t1.start(); |
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Thread.sleep(SHORT_DELAY_MS); |
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assertTrue(lock.hasQueuedThreads()); |
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t2.start(); |
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Thread.sleep(SHORT_DELAY_MS); |
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assertTrue(lock.hasQueuedThreads()); |
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t1.interrupt(); |
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Thread.sleep(SHORT_DELAY_MS); |
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assertTrue(lock.hasQueuedThreads()); |
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lock.unlock(); |
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Thread.sleep(SHORT_DELAY_MS); |
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assertFalse(lock.hasQueuedThreads()); |
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t1.join(); |
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t2.join(); |
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} |
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|
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/** |
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* getQueueLength reports number of waiting threads |
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*/ |
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public void testGetQueueLength() throws InterruptedException { |
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final ReentrantLock lock = new ReentrantLock(); |
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Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
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Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
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assertEquals(0, lock.getQueueLength()); |
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lock.lock(); |
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t1.start(); |
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Thread.sleep(SHORT_DELAY_MS); |
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assertEquals(1, lock.getQueueLength()); |
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t2.start(); |
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Thread.sleep(SHORT_DELAY_MS); |
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assertEquals(2, lock.getQueueLength()); |
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t1.interrupt(); |
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Thread.sleep(SHORT_DELAY_MS); |
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assertEquals(1, lock.getQueueLength()); |
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lock.unlock(); |
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Thread.sleep(SHORT_DELAY_MS); |
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assertEquals(0, lock.getQueueLength()); |
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t1.join(); |
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t2.join(); |
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} |
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|
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/** |
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* getQueueLength reports number of waiting threads |
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*/ |
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public void testGetQueueLength_fair() throws InterruptedException { |
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final ReentrantLock lock = new ReentrantLock(true); |
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Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
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Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
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assertEquals(0, lock.getQueueLength()); |
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lock.lock(); |
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t1.start(); |
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Thread.sleep(SHORT_DELAY_MS); |
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assertEquals(1, lock.getQueueLength()); |
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t2.start(); |
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Thread.sleep(SHORT_DELAY_MS); |
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assertEquals(2, lock.getQueueLength()); |
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t1.interrupt(); |
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Thread.sleep(SHORT_DELAY_MS); |
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assertEquals(1, lock.getQueueLength()); |
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lock.unlock(); |
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Thread.sleep(SHORT_DELAY_MS); |
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assertEquals(0, lock.getQueueLength()); |
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t1.join(); |
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t2.join(); |
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} |
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|
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public void testTryLock_Timeout(){ |
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final ReentrantLock lock = new ReentrantLock(); |
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lock.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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threadAssertFalse(lock.tryLock(1, TimeUnit.MILLISECONDS)); |
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} catch (Exception ex) { |
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threadFail("unexpected exception"); |
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} |
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} |
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}); |
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/** |
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* hasQueuedThread(null) throws NPE |
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*/ |
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public void testHasQueuedThreadNPE() { |
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final ReentrantLock sync = new ReentrantLock(); |
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|
try { |
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t.start(); |
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t.join(); |
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lock.unlock(); |
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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 testGetHoldCount() { |
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ReentrantLock lock = new ReentrantLock(); |
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for(int i = 1; i <= ReentrantLockTest.HOLD_COUNT_TEST_LIMIT;i++) { |
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lock.lock(); |
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assertEquals(i,lock.getHoldCount()); |
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} |
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for(int i = ReentrantLockTest.HOLD_COUNT_TEST_LIMIT; i > 0; i--) { |
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lock.unlock(); |
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assertEquals(i-1,lock.getHoldCount()); |
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} |
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} |
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|
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|
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|
218 |
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|
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public void testIsLocked() { |
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final ReentrantLock lock = new ReentrantLock(); |
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lock.lock(); |
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assertTrue(lock.isLocked()); |
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lock.unlock(); |
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assertFalse(lock.isLocked()); |
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Thread t = new Thread(new Runnable() { |
226 |
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public void run() { |
227 |
< |
lock.lock(); |
228 |
< |
try { |
155 |
< |
Thread.sleep(SMALL_DELAY_MS); |
156 |
< |
} |
157 |
< |
catch(Exception e) { |
158 |
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threadFail("unexpected exception"); |
159 |
< |
} |
160 |
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lock.unlock(); |
161 |
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} |
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}); |
163 |
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try{ |
164 |
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t.start(); |
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Thread.sleep(SHORT_DELAY_MS); |
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assertTrue(lock.isLocked()); |
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t.join(); |
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assertFalse(lock.isLocked()); |
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} catch(Exception e){ |
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fail("unexpected exception"); |
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} |
196 |
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sync.hasQueuedThread(null); |
197 |
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shouldThrow(); |
198 |
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} catch (NullPointerException success) {} |
199 |
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} |
200 |
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|
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/** |
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* hasQueuedThread reports whether a thread is queued. |
203 |
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*/ |
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public void testHasQueuedThread() throws InterruptedException { |
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final ReentrantLock sync = new ReentrantLock(); |
206 |
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Thread t1 = new Thread(new InterruptedLockRunnable(sync)); |
207 |
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Thread t2 = new Thread(new InterruptibleLockRunnable(sync)); |
208 |
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assertFalse(sync.hasQueuedThread(t1)); |
209 |
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assertFalse(sync.hasQueuedThread(t2)); |
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sync.lock(); |
211 |
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t1.start(); |
212 |
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Thread.sleep(SHORT_DELAY_MS); |
213 |
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assertTrue(sync.hasQueuedThread(t1)); |
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t2.start(); |
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Thread.sleep(SHORT_DELAY_MS); |
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assertTrue(sync.hasQueuedThread(t1)); |
217 |
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assertTrue(sync.hasQueuedThread(t2)); |
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t1.interrupt(); |
219 |
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Thread.sleep(SHORT_DELAY_MS); |
220 |
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assertFalse(sync.hasQueuedThread(t1)); |
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assertTrue(sync.hasQueuedThread(t2)); |
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sync.unlock(); |
223 |
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Thread.sleep(SHORT_DELAY_MS); |
224 |
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assertFalse(sync.hasQueuedThread(t1)); |
225 |
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Thread.sleep(SHORT_DELAY_MS); |
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assertFalse(sync.hasQueuedThread(t2)); |
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t1.join(); |
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t2.join(); |
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|
} |
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|
231 |
|
|
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< |
public void testLockInterruptibly() { |
233 |
< |
final ReentrantLock lock = new ReentrantLock(); |
234 |
< |
try { |
235 |
< |
lock.lockInterruptibly(); |
236 |
< |
} catch(Exception e) { |
237 |
< |
fail("unexpected exception"); |
232 |
> |
/** |
233 |
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* getQueuedThreads includes waiting threads |
234 |
> |
*/ |
235 |
> |
public void testGetQueuedThreads() throws InterruptedException { |
236 |
> |
final PublicReentrantLock lock = new PublicReentrantLock(); |
237 |
> |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
238 |
> |
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
239 |
> |
assertTrue(lock.getQueuedThreads().isEmpty()); |
240 |
> |
lock.lock(); |
241 |
> |
assertTrue(lock.getQueuedThreads().isEmpty()); |
242 |
> |
t1.start(); |
243 |
> |
Thread.sleep(SHORT_DELAY_MS); |
244 |
> |
assertTrue(lock.getQueuedThreads().contains(t1)); |
245 |
> |
t2.start(); |
246 |
> |
Thread.sleep(SHORT_DELAY_MS); |
247 |
> |
assertTrue(lock.getQueuedThreads().contains(t1)); |
248 |
> |
assertTrue(lock.getQueuedThreads().contains(t2)); |
249 |
> |
t1.interrupt(); |
250 |
> |
Thread.sleep(SHORT_DELAY_MS); |
251 |
> |
assertFalse(lock.getQueuedThreads().contains(t1)); |
252 |
> |
assertTrue(lock.getQueuedThreads().contains(t2)); |
253 |
> |
lock.unlock(); |
254 |
> |
Thread.sleep(SHORT_DELAY_MS); |
255 |
> |
assertTrue(lock.getQueuedThreads().isEmpty()); |
256 |
> |
t1.join(); |
257 |
> |
t2.join(); |
258 |
> |
} |
259 |
> |
|
260 |
> |
|
261 |
> |
/** |
262 |
> |
* timed tryLock is interruptible. |
263 |
> |
*/ |
264 |
> |
public void testInterruptedException2() throws InterruptedException { |
265 |
> |
final ReentrantLock lock = new ReentrantLock(); |
266 |
> |
lock.lock(); |
267 |
> |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
268 |
> |
public void realRun() throws InterruptedException { |
269 |
> |
lock.tryLock(MEDIUM_DELAY_MS,MILLISECONDS); |
270 |
> |
}}); |
271 |
> |
|
272 |
> |
t.start(); |
273 |
> |
Thread.sleep(SHORT_DELAY_MS); |
274 |
> |
t.interrupt(); |
275 |
> |
t.join(); |
276 |
> |
} |
277 |
> |
|
278 |
> |
|
279 |
> |
/** |
280 |
> |
* TryLock on a locked lock fails |
281 |
> |
*/ |
282 |
> |
public void testTryLockWhenLocked() throws InterruptedException { |
283 |
> |
final ReentrantLock lock = new ReentrantLock(); |
284 |
> |
lock.lock(); |
285 |
> |
Thread t = new Thread(new CheckedRunnable() { |
286 |
> |
public void realRun() { |
287 |
> |
threadAssertFalse(lock.tryLock()); |
288 |
> |
}}); |
289 |
> |
|
290 |
> |
t.start(); |
291 |
> |
t.join(); |
292 |
> |
lock.unlock(); |
293 |
> |
} |
294 |
> |
|
295 |
> |
/** |
296 |
> |
* Timed tryLock on a locked lock times out |
297 |
> |
*/ |
298 |
> |
public void testTryLock_Timeout() throws InterruptedException { |
299 |
> |
final ReentrantLock lock = new ReentrantLock(); |
300 |
> |
lock.lock(); |
301 |
> |
Thread t = new Thread(new CheckedRunnable() { |
302 |
> |
public void realRun() throws InterruptedException { |
303 |
> |
threadAssertFalse(lock.tryLock(1, MILLISECONDS)); |
304 |
> |
}}); |
305 |
> |
|
306 |
> |
t.start(); |
307 |
> |
t.join(); |
308 |
> |
lock.unlock(); |
309 |
> |
} |
310 |
> |
|
311 |
> |
/** |
312 |
> |
* getHoldCount returns number of recursive holds |
313 |
> |
*/ |
314 |
> |
public void testGetHoldCount() { |
315 |
> |
ReentrantLock lock = new ReentrantLock(); |
316 |
> |
for (int i = 1; i <= SIZE; i++) { |
317 |
> |
lock.lock(); |
318 |
> |
assertEquals(i, lock.getHoldCount()); |
319 |
|
} |
320 |
< |
Thread t = new Thread(new Runnable() { |
321 |
< |
public void run() { |
322 |
< |
try { |
185 |
< |
lock.lockInterruptibly(); |
186 |
< |
threadFail("should throw"); |
187 |
< |
} |
188 |
< |
catch(InterruptedException e) {} |
189 |
< |
} |
190 |
< |
}); |
191 |
< |
try { |
192 |
< |
t.start(); |
193 |
< |
t.interrupt(); |
194 |
< |
assertTrue(lock.isLocked()); |
195 |
< |
assertTrue(lock.isHeldByCurrentThread()); |
196 |
< |
t.join(); |
197 |
< |
} catch(Exception e){ |
198 |
< |
fail("unexpected exception"); |
320 |
> |
for (int i = SIZE; i > 0; i--) { |
321 |
> |
lock.unlock(); |
322 |
> |
assertEquals(i-1, lock.getHoldCount()); |
323 |
|
} |
324 |
|
} |
325 |
|
|
326 |
< |
public void testAwait_IllegalMonitor() { |
327 |
< |
final ReentrantLock lock = new ReentrantLock(); |
326 |
> |
|
327 |
> |
/** |
328 |
> |
* isLocked is true when locked and false when not |
329 |
> |
*/ |
330 |
> |
public void testIsLocked() throws InterruptedException { |
331 |
> |
final ReentrantLock lock = new ReentrantLock(); |
332 |
> |
lock.lock(); |
333 |
> |
assertTrue(lock.isLocked()); |
334 |
> |
lock.unlock(); |
335 |
> |
assertFalse(lock.isLocked()); |
336 |
> |
Thread t = new Thread(new CheckedRunnable() { |
337 |
> |
public void realRun() throws InterruptedException { |
338 |
> |
lock.lock(); |
339 |
> |
Thread.sleep(SMALL_DELAY_MS); |
340 |
> |
lock.unlock(); |
341 |
> |
}}); |
342 |
> |
|
343 |
> |
t.start(); |
344 |
> |
Thread.sleep(SHORT_DELAY_MS); |
345 |
> |
assertTrue(lock.isLocked()); |
346 |
> |
t.join(); |
347 |
> |
assertFalse(lock.isLocked()); |
348 |
> |
} |
349 |
> |
|
350 |
> |
|
351 |
> |
/** |
352 |
> |
* lockInterruptibly is interruptible. |
353 |
> |
*/ |
354 |
> |
public void testLockInterruptibly1() throws InterruptedException { |
355 |
> |
final ReentrantLock lock = new ReentrantLock(); |
356 |
> |
lock.lock(); |
357 |
> |
Thread t = new Thread(new InterruptedLockRunnable(lock)); |
358 |
> |
t.start(); |
359 |
> |
Thread.sleep(SHORT_DELAY_MS); |
360 |
> |
t.interrupt(); |
361 |
> |
Thread.sleep(SHORT_DELAY_MS); |
362 |
> |
lock.unlock(); |
363 |
> |
t.join(); |
364 |
> |
} |
365 |
> |
|
366 |
> |
/** |
367 |
> |
* lockInterruptibly succeeds when unlocked, else is interruptible |
368 |
> |
*/ |
369 |
> |
public void testLockInterruptibly2() throws InterruptedException { |
370 |
> |
final ReentrantLock lock = new ReentrantLock(); |
371 |
> |
lock.lockInterruptibly(); |
372 |
> |
Thread t = new Thread(new InterruptedLockRunnable(lock)); |
373 |
> |
t.start(); |
374 |
> |
Thread.sleep(SHORT_DELAY_MS); |
375 |
> |
t.interrupt(); |
376 |
> |
assertTrue(lock.isLocked()); |
377 |
> |
assertTrue(lock.isHeldByCurrentThread()); |
378 |
> |
t.join(); |
379 |
> |
} |
380 |
> |
|
381 |
> |
/** |
382 |
> |
* Calling await without holding lock throws IllegalMonitorStateException |
383 |
> |
*/ |
384 |
> |
public void testAwait_IllegalMonitor() throws InterruptedException { |
385 |
> |
final ReentrantLock lock = new ReentrantLock(); |
386 |
|
final Condition c = lock.newCondition(); |
387 |
|
try { |
388 |
|
c.await(); |
389 |
< |
fail("should throw"); |
390 |
< |
} |
209 |
< |
catch (IllegalMonitorStateException success) { |
210 |
< |
} |
211 |
< |
catch (Exception ex) { |
212 |
< |
fail("should throw IMSE"); |
213 |
< |
} |
389 |
> |
shouldThrow(); |
390 |
> |
} catch (IllegalMonitorStateException success) {} |
391 |
|
} |
392 |
|
|
393 |
+ |
/** |
394 |
+ |
* Calling signal without holding lock throws IllegalMonitorStateException |
395 |
+ |
*/ |
396 |
|
public void testSignal_IllegalMonitor() { |
397 |
< |
final ReentrantLock lock = new ReentrantLock(); |
397 |
> |
final ReentrantLock lock = new ReentrantLock(); |
398 |
|
final Condition c = lock.newCondition(); |
399 |
|
try { |
400 |
|
c.signal(); |
401 |
< |
fail("should throw"); |
402 |
< |
} |
223 |
< |
catch (IllegalMonitorStateException success) { |
224 |
< |
} |
225 |
< |
catch (Exception ex) { |
226 |
< |
fail("should throw IMSE"); |
227 |
< |
} |
401 |
> |
shouldThrow(); |
402 |
> |
} catch (IllegalMonitorStateException success) {} |
403 |
|
} |
404 |
|
|
405 |
< |
public void testAwaitNanos_Timeout() { |
406 |
< |
final ReentrantLock lock = new ReentrantLock(); |
405 |
> |
/** |
406 |
> |
* awaitNanos without a signal times out |
407 |
> |
*/ |
408 |
> |
public void testAwaitNanos_Timeout() throws InterruptedException { |
409 |
> |
final ReentrantLock lock = new ReentrantLock(); |
410 |
> |
final Condition c = lock.newCondition(); |
411 |
> |
lock.lock(); |
412 |
> |
long t = c.awaitNanos(100); |
413 |
> |
assertTrue(t <= 0); |
414 |
> |
lock.unlock(); |
415 |
> |
} |
416 |
> |
|
417 |
> |
/** |
418 |
> |
* timed await without a signal times out |
419 |
> |
*/ |
420 |
> |
public void testAwait_Timeout() throws InterruptedException { |
421 |
> |
final ReentrantLock lock = new ReentrantLock(); |
422 |
> |
final Condition c = lock.newCondition(); |
423 |
> |
lock.lock(); |
424 |
> |
assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS)); |
425 |
> |
lock.unlock(); |
426 |
> |
} |
427 |
> |
|
428 |
> |
/** |
429 |
> |
* awaitUntil without a signal times out |
430 |
> |
*/ |
431 |
> |
public void testAwaitUntil_Timeout() throws InterruptedException { |
432 |
> |
final ReentrantLock lock = new ReentrantLock(); |
433 |
|
final Condition c = lock.newCondition(); |
434 |
+ |
lock.lock(); |
435 |
+ |
java.util.Date d = new java.util.Date(); |
436 |
+ |
assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10))); |
437 |
+ |
lock.unlock(); |
438 |
+ |
} |
439 |
+ |
|
440 |
+ |
/** |
441 |
+ |
* await returns when signalled |
442 |
+ |
*/ |
443 |
+ |
public void testAwait() throws InterruptedException { |
444 |
+ |
final ReentrantLock lock = new ReentrantLock(); |
445 |
+ |
final Condition c = lock.newCondition(); |
446 |
+ |
Thread t = new Thread(new CheckedRunnable() { |
447 |
+ |
public void realRun() throws InterruptedException { |
448 |
+ |
lock.lock(); |
449 |
+ |
c.await(); |
450 |
+ |
lock.unlock(); |
451 |
+ |
}}); |
452 |
+ |
|
453 |
+ |
t.start(); |
454 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
455 |
+ |
lock.lock(); |
456 |
+ |
c.signal(); |
457 |
+ |
lock.unlock(); |
458 |
+ |
t.join(SHORT_DELAY_MS); |
459 |
+ |
assertFalse(t.isAlive()); |
460 |
+ |
} |
461 |
+ |
|
462 |
+ |
/** |
463 |
+ |
* hasWaiters throws NPE if null |
464 |
+ |
*/ |
465 |
+ |
public void testHasWaitersNPE() { |
466 |
+ |
final ReentrantLock lock = new ReentrantLock(); |
467 |
|
try { |
468 |
< |
lock.lock(); |
469 |
< |
long t = c.awaitNanos(100); |
470 |
< |
assertTrue(t <= 0); |
471 |
< |
lock.unlock(); |
472 |
< |
} |
473 |
< |
catch (Exception ex) { |
474 |
< |
fail("unexpected exception"); |
475 |
< |
} |
468 |
> |
lock.hasWaiters(null); |
469 |
> |
shouldThrow(); |
470 |
> |
} catch (NullPointerException success) {} |
471 |
> |
} |
472 |
> |
|
473 |
> |
/** |
474 |
> |
* getWaitQueueLength throws NPE if null |
475 |
> |
*/ |
476 |
> |
public void testGetWaitQueueLengthNPE() { |
477 |
> |
final ReentrantLock lock = new ReentrantLock(); |
478 |
> |
try { |
479 |
> |
lock.getWaitQueueLength(null); |
480 |
> |
shouldThrow(); |
481 |
> |
} catch (NullPointerException success) {} |
482 |
|
} |
483 |
|
|
484 |
< |
public void testAwait_Timeout() { |
485 |
< |
final ReentrantLock lock = new ReentrantLock(); |
484 |
> |
|
485 |
> |
/** |
486 |
> |
* getWaitingThreads throws NPE if null |
487 |
> |
*/ |
488 |
> |
public void testGetWaitingThreadsNPE() { |
489 |
> |
final PublicReentrantLock lock = new PublicReentrantLock(); |
490 |
> |
try { |
491 |
> |
lock.getWaitingThreads(null); |
492 |
> |
shouldThrow(); |
493 |
> |
} catch (NullPointerException success) {} |
494 |
> |
} |
495 |
> |
|
496 |
> |
|
497 |
> |
/** |
498 |
> |
* hasWaiters throws IAE if not owned |
499 |
> |
*/ |
500 |
> |
public void testHasWaitersIAE() { |
501 |
> |
final ReentrantLock lock = new ReentrantLock(); |
502 |
|
final Condition c = lock.newCondition(); |
503 |
+ |
final ReentrantLock lock2 = new ReentrantLock(); |
504 |
|
try { |
505 |
< |
lock.lock(); |
506 |
< |
assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
507 |
< |
lock.unlock(); |
508 |
< |
} |
509 |
< |
catch (Exception ex) { |
510 |
< |
fail("unexpected exception"); |
511 |
< |
} |
505 |
> |
lock2.hasWaiters(c); |
506 |
> |
shouldThrow(); |
507 |
> |
} catch (IllegalArgumentException success) {} |
508 |
> |
} |
509 |
> |
|
510 |
> |
/** |
511 |
> |
* hasWaiters throws IMSE if not locked |
512 |
> |
*/ |
513 |
> |
public void testHasWaitersIMSE() { |
514 |
> |
final ReentrantLock lock = new ReentrantLock(); |
515 |
> |
final Condition c = lock.newCondition(); |
516 |
> |
try { |
517 |
> |
lock.hasWaiters(c); |
518 |
> |
shouldThrow(); |
519 |
> |
} catch (IllegalMonitorStateException success) {} |
520 |
|
} |
521 |
|
|
522 |
< |
public void testAwaitUntil_Timeout() { |
523 |
< |
final ReentrantLock lock = new ReentrantLock(); |
522 |
> |
|
523 |
> |
/** |
524 |
> |
* getWaitQueueLength throws IAE if not owned |
525 |
> |
*/ |
526 |
> |
public void testGetWaitQueueLengthIAE() { |
527 |
> |
final ReentrantLock lock = new ReentrantLock(); |
528 |
|
final Condition c = lock.newCondition(); |
529 |
+ |
final ReentrantLock lock2 = new ReentrantLock(); |
530 |
|
try { |
531 |
< |
lock.lock(); |
532 |
< |
java.util.Date d = new java.util.Date(); |
533 |
< |
assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10))); |
534 |
< |
lock.unlock(); |
535 |
< |
} |
536 |
< |
catch (Exception ex) { |
537 |
< |
fail("unexpected exception"); |
538 |
< |
} |
531 |
> |
lock2.getWaitQueueLength(c); |
532 |
> |
shouldThrow(); |
533 |
> |
} catch (IllegalArgumentException success) {} |
534 |
> |
} |
535 |
> |
|
536 |
> |
/** |
537 |
> |
* getWaitQueueLength throws IMSE if not locked |
538 |
> |
*/ |
539 |
> |
public void testGetWaitQueueLengthIMSE() { |
540 |
> |
final ReentrantLock lock = new ReentrantLock(); |
541 |
> |
final Condition c = lock.newCondition(); |
542 |
> |
try { |
543 |
> |
lock.getWaitQueueLength(c); |
544 |
> |
shouldThrow(); |
545 |
> |
} catch (IllegalMonitorStateException success) {} |
546 |
|
} |
547 |
|
|
548 |
< |
public void testAwait() { |
549 |
< |
final ReentrantLock lock = new ReentrantLock(); |
548 |
> |
|
549 |
> |
/** |
550 |
> |
* getWaitingThreads throws IAE if not owned |
551 |
> |
*/ |
552 |
> |
public void testGetWaitingThreadsIAE() { |
553 |
> |
final PublicReentrantLock lock = new PublicReentrantLock(); |
554 |
|
final Condition c = lock.newCondition(); |
555 |
< |
Thread t = new Thread(new Runnable() { |
556 |
< |
public void run() { |
557 |
< |
try { |
558 |
< |
lock.lock(); |
559 |
< |
c.await(); |
560 |
< |
lock.unlock(); |
280 |
< |
} |
281 |
< |
catch(InterruptedException e) { |
282 |
< |
threadFail("unexpected exception"); |
283 |
< |
} |
284 |
< |
} |
285 |
< |
}); |
555 |
> |
final PublicReentrantLock lock2 = new PublicReentrantLock(); |
556 |
> |
try { |
557 |
> |
lock2.getWaitingThreads(c); |
558 |
> |
shouldThrow(); |
559 |
> |
} catch (IllegalArgumentException success) {} |
560 |
> |
} |
561 |
|
|
562 |
+ |
/** |
563 |
+ |
* getWaitingThreads throws IMSE if not locked |
564 |
+ |
*/ |
565 |
+ |
public void testGetWaitingThreadsIMSE() { |
566 |
+ |
final PublicReentrantLock lock = new PublicReentrantLock(); |
567 |
+ |
final Condition c = lock.newCondition(); |
568 |
|
try { |
569 |
< |
t.start(); |
570 |
< |
Thread.sleep(SHORT_DELAY_MS); |
569 |
> |
lock.getWaitingThreads(c); |
570 |
> |
shouldThrow(); |
571 |
> |
} catch (IllegalMonitorStateException success) {} |
572 |
> |
} |
573 |
> |
|
574 |
> |
|
575 |
> |
/** |
576 |
> |
* hasWaiters returns true when a thread is waiting, else false |
577 |
> |
*/ |
578 |
> |
public void testHasWaiters() throws InterruptedException { |
579 |
> |
final ReentrantLock lock = new ReentrantLock(); |
580 |
> |
final Condition c = lock.newCondition(); |
581 |
> |
Thread t = new Thread(new CheckedRunnable() { |
582 |
> |
public void realRun() throws InterruptedException { |
583 |
> |
lock.lock(); |
584 |
> |
threadAssertFalse(lock.hasWaiters(c)); |
585 |
> |
threadAssertEquals(0, lock.getWaitQueueLength(c)); |
586 |
> |
c.await(); |
587 |
> |
lock.unlock(); |
588 |
> |
}}); |
589 |
> |
|
590 |
> |
t.start(); |
591 |
> |
Thread.sleep(SHORT_DELAY_MS); |
592 |
> |
lock.lock(); |
593 |
> |
assertTrue(lock.hasWaiters(c)); |
594 |
> |
assertEquals(1, lock.getWaitQueueLength(c)); |
595 |
> |
c.signal(); |
596 |
> |
lock.unlock(); |
597 |
> |
Thread.sleep(SHORT_DELAY_MS); |
598 |
> |
lock.lock(); |
599 |
> |
assertFalse(lock.hasWaiters(c)); |
600 |
> |
assertEquals(0, lock.getWaitQueueLength(c)); |
601 |
> |
lock.unlock(); |
602 |
> |
t.join(SHORT_DELAY_MS); |
603 |
> |
assertFalse(t.isAlive()); |
604 |
> |
} |
605 |
> |
|
606 |
> |
/** |
607 |
> |
* getWaitQueueLength returns number of waiting threads |
608 |
> |
*/ |
609 |
> |
public void testGetWaitQueueLength() throws InterruptedException { |
610 |
> |
final ReentrantLock lock = new ReentrantLock(); |
611 |
> |
final Condition c = lock.newCondition(); |
612 |
> |
Thread t1 = new Thread(new CheckedRunnable() { |
613 |
> |
public void realRun() throws InterruptedException { |
614 |
> |
lock.lock(); |
615 |
> |
threadAssertFalse(lock.hasWaiters(c)); |
616 |
> |
threadAssertEquals(0, lock.getWaitQueueLength(c)); |
617 |
> |
c.await(); |
618 |
> |
lock.unlock(); |
619 |
> |
}}); |
620 |
> |
|
621 |
> |
Thread t2 = new Thread(new CheckedRunnable() { |
622 |
> |
public void realRun() throws InterruptedException { |
623 |
> |
lock.lock(); |
624 |
> |
threadAssertTrue(lock.hasWaiters(c)); |
625 |
> |
threadAssertEquals(1, lock.getWaitQueueLength(c)); |
626 |
> |
c.await(); |
627 |
> |
lock.unlock(); |
628 |
> |
}}); |
629 |
> |
|
630 |
> |
t1.start(); |
631 |
> |
Thread.sleep(SHORT_DELAY_MS); |
632 |
> |
t2.start(); |
633 |
> |
Thread.sleep(SHORT_DELAY_MS); |
634 |
> |
lock.lock(); |
635 |
> |
assertTrue(lock.hasWaiters(c)); |
636 |
> |
assertEquals(2, lock.getWaitQueueLength(c)); |
637 |
> |
c.signalAll(); |
638 |
> |
lock.unlock(); |
639 |
> |
Thread.sleep(SHORT_DELAY_MS); |
640 |
> |
lock.lock(); |
641 |
> |
assertFalse(lock.hasWaiters(c)); |
642 |
> |
assertEquals(0, lock.getWaitQueueLength(c)); |
643 |
> |
lock.unlock(); |
644 |
> |
t1.join(SHORT_DELAY_MS); |
645 |
> |
t2.join(SHORT_DELAY_MS); |
646 |
> |
assertFalse(t1.isAlive()); |
647 |
> |
assertFalse(t2.isAlive()); |
648 |
> |
} |
649 |
> |
|
650 |
> |
/** |
651 |
> |
* getWaitingThreads returns only and all waiting threads |
652 |
> |
*/ |
653 |
> |
public void testGetWaitingThreads() throws InterruptedException { |
654 |
> |
final PublicReentrantLock lock = new PublicReentrantLock(); |
655 |
> |
final Condition c = lock.newCondition(); |
656 |
> |
Thread t1 = new Thread(new CheckedRunnable() { |
657 |
> |
public void realRun() throws InterruptedException { |
658 |
> |
lock.lock(); |
659 |
> |
threadAssertTrue(lock.getWaitingThreads(c).isEmpty()); |
660 |
> |
c.await(); |
661 |
> |
lock.unlock(); |
662 |
> |
}}); |
663 |
> |
|
664 |
> |
Thread t2 = new Thread(new CheckedRunnable() { |
665 |
> |
public void realRun() throws InterruptedException { |
666 |
> |
lock.lock(); |
667 |
> |
threadAssertFalse(lock.getWaitingThreads(c).isEmpty()); |
668 |
> |
c.await(); |
669 |
> |
lock.unlock(); |
670 |
> |
}}); |
671 |
> |
|
672 |
> |
lock.lock(); |
673 |
> |
assertTrue(lock.getWaitingThreads(c).isEmpty()); |
674 |
> |
lock.unlock(); |
675 |
> |
t1.start(); |
676 |
> |
Thread.sleep(SHORT_DELAY_MS); |
677 |
> |
t2.start(); |
678 |
> |
Thread.sleep(SHORT_DELAY_MS); |
679 |
> |
lock.lock(); |
680 |
> |
assertTrue(lock.hasWaiters(c)); |
681 |
> |
assertTrue(lock.getWaitingThreads(c).contains(t1)); |
682 |
> |
assertTrue(lock.getWaitingThreads(c).contains(t2)); |
683 |
> |
c.signalAll(); |
684 |
> |
lock.unlock(); |
685 |
> |
Thread.sleep(SHORT_DELAY_MS); |
686 |
> |
lock.lock(); |
687 |
> |
assertFalse(lock.hasWaiters(c)); |
688 |
> |
assertTrue(lock.getWaitingThreads(c).isEmpty()); |
689 |
> |
lock.unlock(); |
690 |
> |
t1.join(SHORT_DELAY_MS); |
691 |
> |
t2.join(SHORT_DELAY_MS); |
692 |
> |
assertFalse(t1.isAlive()); |
693 |
> |
assertFalse(t2.isAlive()); |
694 |
> |
} |
695 |
> |
|
696 |
> |
/** A helper class for uninterruptible wait tests */ |
697 |
> |
class UninterruptibleThread extends Thread { |
698 |
> |
private ReentrantLock lock; |
699 |
> |
private Condition c; |
700 |
> |
|
701 |
> |
public volatile boolean canAwake = false; |
702 |
> |
public volatile boolean interrupted = false; |
703 |
> |
public volatile boolean lockStarted = false; |
704 |
> |
|
705 |
> |
public UninterruptibleThread(ReentrantLock lock, Condition c) { |
706 |
> |
this.lock = lock; |
707 |
> |
this.c = c; |
708 |
> |
} |
709 |
> |
|
710 |
> |
public synchronized void run() { |
711 |
|
lock.lock(); |
712 |
< |
c.signal(); |
712 |
> |
lockStarted = true; |
713 |
> |
|
714 |
> |
while (!canAwake) { |
715 |
> |
c.awaitUninterruptibly(); |
716 |
> |
} |
717 |
> |
|
718 |
> |
interrupted = isInterrupted(); |
719 |
|
lock.unlock(); |
293 |
– |
t.join(SHORT_DELAY_MS); |
294 |
– |
assertFalse(t.isAlive()); |
295 |
– |
} |
296 |
– |
catch (Exception ex) { |
297 |
– |
fail("unexpected exception"); |
720 |
|
} |
721 |
|
} |
722 |
|
|
723 |
< |
public void testAwaitUninterruptibly() { |
724 |
< |
final ReentrantLock lock = new ReentrantLock(); |
723 |
> |
/** |
724 |
> |
* awaitUninterruptibly doesn't abort on interrupt |
725 |
> |
*/ |
726 |
> |
public void testAwaitUninterruptibly() throws InterruptedException { |
727 |
> |
final ReentrantLock lock = new ReentrantLock(); |
728 |
|
final Condition c = lock.newCondition(); |
729 |
< |
Thread t = new Thread(new Runnable() { |
730 |
< |
public void run() { |
731 |
< |
lock.lock(); |
307 |
< |
c.awaitUninterruptibly(); |
308 |
< |
lock.unlock(); |
309 |
< |
} |
310 |
< |
}); |
729 |
> |
UninterruptibleThread thread = new UninterruptibleThread(lock, c); |
730 |
> |
|
731 |
> |
thread.start(); |
732 |
|
|
733 |
+ |
while (!thread.lockStarted) { |
734 |
+ |
Thread.sleep(100); |
735 |
+ |
} |
736 |
+ |
|
737 |
+ |
lock.lock(); |
738 |
|
try { |
739 |
< |
t.start(); |
740 |
< |
Thread.sleep(SHORT_DELAY_MS); |
315 |
< |
t.interrupt(); |
316 |
< |
lock.lock(); |
739 |
> |
thread.interrupt(); |
740 |
> |
thread.canAwake = true; |
741 |
|
c.signal(); |
742 |
+ |
} finally { |
743 |
|
lock.unlock(); |
319 |
– |
t.join(SHORT_DELAY_MS); |
320 |
– |
assertFalse(t.isAlive()); |
321 |
– |
} |
322 |
– |
catch (Exception ex) { |
323 |
– |
fail("unexpected exception"); |
744 |
|
} |
745 |
+ |
|
746 |
+ |
thread.join(); |
747 |
+ |
assertTrue(thread.interrupted); |
748 |
+ |
assertFalse(thread.isAlive()); |
749 |
|
} |
750 |
|
|
751 |
< |
public void testAwait_Interrupt() { |
752 |
< |
final ReentrantLock lock = new ReentrantLock(); |
751 |
> |
/** |
752 |
> |
* await is interruptible |
753 |
> |
*/ |
754 |
> |
public void testAwait_Interrupt() throws InterruptedException { |
755 |
> |
final ReentrantLock lock = new ReentrantLock(); |
756 |
|
final Condition c = lock.newCondition(); |
757 |
< |
Thread t = new Thread(new Runnable() { |
758 |
< |
public void run() { |
759 |
< |
try { |
760 |
< |
lock.lock(); |
761 |
< |
c.await(); |
762 |
< |
lock.unlock(); |
763 |
< |
threadFail("should throw"); |
764 |
< |
} |
765 |
< |
catch(InterruptedException success) { |
766 |
< |
} |
767 |
< |
} |
341 |
< |
}); |
342 |
< |
|
343 |
< |
try { |
344 |
< |
t.start(); |
345 |
< |
Thread.sleep(SHORT_DELAY_MS); |
346 |
< |
t.interrupt(); |
347 |
< |
t.join(SHORT_DELAY_MS); |
348 |
< |
assertFalse(t.isAlive()); |
349 |
< |
} |
350 |
< |
catch (Exception ex) { |
351 |
< |
fail("unexpected exception"); |
352 |
< |
} |
757 |
> |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
758 |
> |
public void realRun() throws InterruptedException { |
759 |
> |
lock.lock(); |
760 |
> |
c.await(); |
761 |
> |
}}); |
762 |
> |
|
763 |
> |
t.start(); |
764 |
> |
Thread.sleep(SHORT_DELAY_MS); |
765 |
> |
t.interrupt(); |
766 |
> |
t.join(SHORT_DELAY_MS); |
767 |
> |
assertFalse(t.isAlive()); |
768 |
|
} |
769 |
|
|
770 |
< |
public void testAwaitNanos_Interrupt() { |
771 |
< |
final ReentrantLock lock = new ReentrantLock(); |
770 |
> |
/** |
771 |
> |
* awaitNanos is interruptible |
772 |
> |
*/ |
773 |
> |
public void testAwaitNanos_Interrupt() throws InterruptedException { |
774 |
> |
final ReentrantLock lock = new ReentrantLock(); |
775 |
|
final Condition c = lock.newCondition(); |
776 |
< |
Thread t = new Thread(new Runnable() { |
777 |
< |
public void run() { |
778 |
< |
try { |
779 |
< |
lock.lock(); |
780 |
< |
c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000); |
781 |
< |
lock.unlock(); |
782 |
< |
threadFail("should throw"); |
783 |
< |
} |
784 |
< |
catch(InterruptedException success) { |
785 |
< |
} |
786 |
< |
} |
369 |
< |
}); |
370 |
< |
|
371 |
< |
try { |
372 |
< |
t.start(); |
373 |
< |
Thread.sleep(SHORT_DELAY_MS); |
374 |
< |
t.interrupt(); |
375 |
< |
t.join(SHORT_DELAY_MS); |
376 |
< |
assertFalse(t.isAlive()); |
377 |
< |
} |
378 |
< |
catch (Exception ex) { |
379 |
< |
fail("unexpected exception"); |
380 |
< |
} |
776 |
> |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
777 |
> |
public void realRun() throws InterruptedException { |
778 |
> |
lock.lock(); |
779 |
> |
c.awaitNanos(MILLISECONDS.toNanos(LONG_DELAY_MS)); |
780 |
> |
}}); |
781 |
> |
|
782 |
> |
t.start(); |
783 |
> |
Thread.sleep(SHORT_DELAY_MS); |
784 |
> |
t.interrupt(); |
785 |
> |
t.join(SHORT_DELAY_MS); |
786 |
> |
assertFalse(t.isAlive()); |
787 |
|
} |
788 |
|
|
789 |
< |
public void testAwaitUntil_Interrupt() { |
790 |
< |
final ReentrantLock lock = new ReentrantLock(); |
789 |
> |
/** |
790 |
> |
* awaitUntil is interruptible |
791 |
> |
*/ |
792 |
> |
public void testAwaitUntil_Interrupt() throws InterruptedException { |
793 |
> |
final ReentrantLock lock = new ReentrantLock(); |
794 |
|
final Condition c = lock.newCondition(); |
795 |
< |
Thread t = new Thread(new Runnable() { |
796 |
< |
public void run() { |
797 |
< |
try { |
798 |
< |
lock.lock(); |
799 |
< |
java.util.Date d = new java.util.Date(); |
800 |
< |
c.awaitUntil(new java.util.Date(d.getTime() + 10000)); |
801 |
< |
lock.unlock(); |
802 |
< |
threadFail("should throw"); |
803 |
< |
} |
804 |
< |
catch(InterruptedException success) { |
805 |
< |
} |
806 |
< |
} |
398 |
< |
}); |
399 |
< |
|
400 |
< |
try { |
401 |
< |
t.start(); |
402 |
< |
Thread.sleep(SHORT_DELAY_MS); |
403 |
< |
t.interrupt(); |
404 |
< |
t.join(SHORT_DELAY_MS); |
405 |
< |
assertFalse(t.isAlive()); |
406 |
< |
} |
407 |
< |
catch (Exception ex) { |
408 |
< |
fail("unexpected exception"); |
409 |
< |
} |
795 |
> |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
796 |
> |
public void realRun() throws InterruptedException { |
797 |
> |
lock.lock(); |
798 |
> |
java.util.Date d = new java.util.Date(); |
799 |
> |
c.awaitUntil(new java.util.Date(d.getTime() + 10000)); |
800 |
> |
}}); |
801 |
> |
|
802 |
> |
t.start(); |
803 |
> |
Thread.sleep(SHORT_DELAY_MS); |
804 |
> |
t.interrupt(); |
805 |
> |
t.join(SHORT_DELAY_MS); |
806 |
> |
assertFalse(t.isAlive()); |
807 |
|
} |
808 |
|
|
809 |
< |
public void testSignalAll() { |
810 |
< |
final ReentrantLock lock = new ReentrantLock(); |
809 |
> |
/** |
810 |
> |
* signalAll wakes up all threads |
811 |
> |
*/ |
812 |
> |
public void testSignalAll() throws InterruptedException { |
813 |
> |
final ReentrantLock lock = new ReentrantLock(); |
814 |
|
final Condition c = lock.newCondition(); |
815 |
< |
Thread t1 = new Thread(new Runnable() { |
816 |
< |
public void run() { |
817 |
< |
try { |
818 |
< |
lock.lock(); |
819 |
< |
c.await(); |
820 |
< |
lock.unlock(); |
821 |
< |
} |
822 |
< |
catch(InterruptedException e) { |
823 |
< |
threadFail("unexpected exception"); |
824 |
< |
} |
825 |
< |
} |
826 |
< |
}); |
827 |
< |
|
828 |
< |
Thread t2 = new Thread(new Runnable() { |
829 |
< |
public void run() { |
830 |
< |
try { |
831 |
< |
lock.lock(); |
832 |
< |
c.await(); |
833 |
< |
lock.unlock(); |
834 |
< |
} |
835 |
< |
catch(InterruptedException e) { |
836 |
< |
threadFail("unexpected exception"); |
837 |
< |
} |
838 |
< |
} |
839 |
< |
}); |
840 |
< |
|
841 |
< |
try { |
842 |
< |
t1.start(); |
843 |
< |
t2.start(); |
844 |
< |
Thread.sleep(SHORT_DELAY_MS); |
845 |
< |
lock.lock(); |
846 |
< |
c.signalAll(); |
847 |
< |
lock.unlock(); |
848 |
< |
t1.join(SHORT_DELAY_MS); |
849 |
< |
t2.join(SHORT_DELAY_MS); |
850 |
< |
assertFalse(t1.isAlive()); |
851 |
< |
assertFalse(t2.isAlive()); |
852 |
< |
} |
853 |
< |
catch (Exception ex) { |
854 |
< |
fail("unexpected exception"); |
855 |
< |
} |
815 |
> |
Thread t1 = new Thread(new CheckedRunnable() { |
816 |
> |
public void realRun() throws InterruptedException { |
817 |
> |
lock.lock(); |
818 |
> |
c.await(); |
819 |
> |
lock.unlock(); |
820 |
> |
}}); |
821 |
> |
|
822 |
> |
Thread t2 = new Thread(new CheckedRunnable() { |
823 |
> |
public void realRun() throws InterruptedException { |
824 |
> |
lock.lock(); |
825 |
> |
c.await(); |
826 |
> |
lock.unlock(); |
827 |
> |
}}); |
828 |
> |
|
829 |
> |
t1.start(); |
830 |
> |
t2.start(); |
831 |
> |
Thread.sleep(SHORT_DELAY_MS); |
832 |
> |
lock.lock(); |
833 |
> |
c.signalAll(); |
834 |
> |
lock.unlock(); |
835 |
> |
t1.join(SHORT_DELAY_MS); |
836 |
> |
t2.join(SHORT_DELAY_MS); |
837 |
> |
assertFalse(t1.isAlive()); |
838 |
> |
assertFalse(t2.isAlive()); |
839 |
> |
} |
840 |
> |
|
841 |
> |
/** |
842 |
> |
* await after multiple reentrant locking preserves lock count |
843 |
> |
*/ |
844 |
> |
public void testAwaitLockCount() throws InterruptedException { |
845 |
> |
final ReentrantLock lock = new ReentrantLock(); |
846 |
> |
final Condition c = lock.newCondition(); |
847 |
> |
Thread t1 = new Thread(new CheckedRunnable() { |
848 |
> |
public void realRun() throws InterruptedException { |
849 |
> |
lock.lock(); |
850 |
> |
threadAssertEquals(1, lock.getHoldCount()); |
851 |
> |
c.await(); |
852 |
> |
threadAssertEquals(1, lock.getHoldCount()); |
853 |
> |
lock.unlock(); |
854 |
> |
}}); |
855 |
> |
|
856 |
> |
Thread t2 = new Thread(new CheckedRunnable() { |
857 |
> |
public void realRun() throws InterruptedException { |
858 |
> |
lock.lock(); |
859 |
> |
lock.lock(); |
860 |
> |
threadAssertEquals(2, lock.getHoldCount()); |
861 |
> |
c.await(); |
862 |
> |
threadAssertEquals(2, lock.getHoldCount()); |
863 |
> |
lock.unlock(); |
864 |
> |
lock.unlock(); |
865 |
> |
}}); |
866 |
> |
|
867 |
> |
t1.start(); |
868 |
> |
t2.start(); |
869 |
> |
Thread.sleep(SHORT_DELAY_MS); |
870 |
> |
lock.lock(); |
871 |
> |
c.signalAll(); |
872 |
> |
lock.unlock(); |
873 |
> |
t1.join(SHORT_DELAY_MS); |
874 |
> |
t2.join(SHORT_DELAY_MS); |
875 |
> |
assertFalse(t1.isAlive()); |
876 |
> |
assertFalse(t2.isAlive()); |
877 |
|
} |
878 |
|
|
879 |
< |
public void testSerialization() { |
879 |
> |
/** |
880 |
> |
* A serialized lock deserializes as unlocked |
881 |
> |
*/ |
882 |
> |
public void testSerialization() throws Exception { |
883 |
|
ReentrantLock l = new ReentrantLock(); |
884 |
|
l.lock(); |
885 |
|
l.unlock(); |
886 |
|
|
887 |
< |
try { |
888 |
< |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
889 |
< |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
890 |
< |
out.writeObject(l); |
891 |
< |
out.close(); |
892 |
< |
|
893 |
< |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
894 |
< |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
895 |
< |
ReentrantLock r = (ReentrantLock) in.readObject(); |
896 |
< |
r.lock(); |
897 |
< |
r.unlock(); |
898 |
< |
} catch(Exception e){ |
899 |
< |
e.printStackTrace(); |
900 |
< |
fail("unexpected exception"); |
901 |
< |
} |
887 |
> |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
888 |
> |
ObjectOutputStream out = |
889 |
> |
new ObjectOutputStream(new BufferedOutputStream(bout)); |
890 |
> |
out.writeObject(l); |
891 |
> |
out.close(); |
892 |
> |
|
893 |
> |
ByteArrayInputStream bin = |
894 |
> |
new ByteArrayInputStream(bout.toByteArray()); |
895 |
> |
ObjectInputStream in = |
896 |
> |
new ObjectInputStream(new BufferedInputStream(bin)); |
897 |
> |
ReentrantLock r = (ReentrantLock) in.readObject(); |
898 |
> |
r.lock(); |
899 |
> |
r.unlock(); |
900 |
> |
} |
901 |
> |
|
902 |
> |
/** |
903 |
> |
* toString indicates current lock state |
904 |
> |
*/ |
905 |
> |
public void testToString() { |
906 |
> |
ReentrantLock lock = new ReentrantLock(); |
907 |
> |
String us = lock.toString(); |
908 |
> |
assertTrue(us.indexOf("Unlocked") >= 0); |
909 |
> |
lock.lock(); |
910 |
> |
String ls = lock.toString(); |
911 |
> |
assertTrue(ls.indexOf("Locked") >= 0); |
912 |
|
} |
913 |
|
|
914 |
|
} |