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/* |
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* Written by Doug Lea and Martin Buchholz |
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* with assistance from members of JCP JSR-166 Expert Group and |
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* released to the public domain, as explained at |
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* http://creativecommons.org/publicdomain/zero/1.0/ |
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* Other contributors include Andrew Wright, Jeffrey Hayes, |
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* Pat Fisher, Mike Judd. |
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*/ |
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|
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import junit.framework.*; |
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import java.util.concurrent.atomic.AtomicBoolean; |
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import java.util.concurrent.locks.Condition; |
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import java.util.concurrent.locks.Lock; |
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import java.util.concurrent.locks.ReadWriteLock; |
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import java.util.concurrent.locks.StampedLock; |
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import java.util.concurrent.CountDownLatch; |
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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import java.util.*; |
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|
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public class StampedLockTest extends JSR166TestCase { |
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public static void main(String[] args) { |
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junit.textui.TestRunner.run(suite()); |
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} |
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public static Test suite() { |
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return new TestSuite(StampedLockTest.class); |
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} |
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|
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// XXXX Just a skeleton implementation for now. |
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public void testTODO() { |
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fail("Please add some real tests!"); |
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} |
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|
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public void testConstructor() { new StampedLock(); } |
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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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// * 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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// PublicReentrantReadWriteLock(boolean fair) { super(fair); } |
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// public Thread getOwner() { |
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// return super.getOwner(); |
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// } |
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// public Collection<Thread> getQueuedThreads() { |
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// return super.getQueuedThreads(); |
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// } |
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// public Collection<Thread> getWaitingThreads(Condition c) { |
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// return super.getWaitingThreads(c); |
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// } |
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// } |
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|
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// /** |
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// * Releases write lock, checking that it had a hold count of 1. |
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// */ |
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// void releaseWriteLock(PublicReentrantReadWriteLock lock) { |
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// ReentrantReadWriteLock.WriteLock writeLock = lock.writeLock(); |
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// assertWriteLockedByMoi(lock); |
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// assertEquals(1, lock.getWriteHoldCount()); |
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// writeLock.unlock(); |
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// assertNotWriteLocked(lock); |
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// } |
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|
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// /** |
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// * Spin-waits until lock.hasQueuedThread(t) becomes true. |
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// */ |
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// void waitForQueuedThread(PublicReentrantReadWriteLock lock, Thread t) { |
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// long startTime = System.nanoTime(); |
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// while (!lock.hasQueuedThread(t)) { |
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// if (millisElapsedSince(startTime) > LONG_DELAY_MS) |
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// throw new AssertionFailedError("timed out"); |
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// Thread.yield(); |
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// } |
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// assertTrue(t.isAlive()); |
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// assertTrue(lock.getOwner() != t); |
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// } |
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|
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// /** |
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// * Checks that lock is not write-locked. |
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// */ |
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// void assertNotWriteLocked(PublicReentrantReadWriteLock lock) { |
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// assertFalse(lock.isWriteLocked()); |
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// assertFalse(lock.isWriteLockedByCurrentThread()); |
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// assertFalse(lock.writeLock().isHeldByCurrentThread()); |
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// assertEquals(0, lock.getWriteHoldCount()); |
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// assertEquals(0, lock.writeLock().getHoldCount()); |
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// assertNull(lock.getOwner()); |
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// } |
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|
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// /** |
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// * Checks that lock is write-locked by the given thread. |
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// */ |
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// void assertWriteLockedBy(PublicReentrantReadWriteLock lock, Thread t) { |
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// assertTrue(lock.isWriteLocked()); |
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// assertSame(t, lock.getOwner()); |
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// assertEquals(t == Thread.currentThread(), |
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// lock.isWriteLockedByCurrentThread()); |
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// assertEquals(t == Thread.currentThread(), |
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// lock.writeLock().isHeldByCurrentThread()); |
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// assertEquals(t == Thread.currentThread(), |
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// lock.getWriteHoldCount() > 0); |
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// assertEquals(t == Thread.currentThread(), |
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// lock.writeLock().getHoldCount() > 0); |
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// assertEquals(0, lock.getReadLockCount()); |
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// } |
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|
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// /** |
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// * Checks that lock is write-locked by the current thread. |
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// */ |
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// void assertWriteLockedByMoi(PublicReentrantReadWriteLock lock) { |
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// assertWriteLockedBy(lock, Thread.currentThread()); |
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// } |
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|
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// /** |
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// * Checks that condition c has no waiters. |
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// */ |
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// void assertHasNoWaiters(PublicReentrantReadWriteLock lock, Condition c) { |
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// assertHasWaiters(lock, c, new Thread[] {}); |
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// } |
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|
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// /** |
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// * Checks that condition c has exactly the given waiter threads. |
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// */ |
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// void assertHasWaiters(PublicReentrantReadWriteLock lock, Condition c, |
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// Thread... threads) { |
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// lock.writeLock().lock(); |
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// assertEquals(threads.length > 0, lock.hasWaiters(c)); |
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// assertEquals(threads.length, lock.getWaitQueueLength(c)); |
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// assertEquals(threads.length == 0, lock.getWaitingThreads(c).isEmpty()); |
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// assertEquals(threads.length, lock.getWaitingThreads(c).size()); |
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// assertEquals(new HashSet<Thread>(lock.getWaitingThreads(c)), |
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// new HashSet<Thread>(Arrays.asList(threads))); |
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// lock.writeLock().unlock(); |
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// } |
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|
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// enum AwaitMethod { await, awaitTimed, awaitNanos, awaitUntil }; |
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|
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// /** |
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// * Awaits condition using the specified AwaitMethod. |
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// */ |
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// void await(Condition c, AwaitMethod awaitMethod) |
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// throws InterruptedException { |
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// switch (awaitMethod) { |
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// case await: |
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// c.await(); |
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// break; |
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// case awaitTimed: |
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// assertTrue(c.await(2 * LONG_DELAY_MS, MILLISECONDS)); |
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// break; |
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// case awaitNanos: |
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// long nanosRemaining = c.awaitNanos(MILLISECONDS.toNanos(2 * LONG_DELAY_MS)); |
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// assertTrue(nanosRemaining > 0); |
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// break; |
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// case awaitUntil: |
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// java.util.Date d = new java.util.Date(); |
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// assertTrue(c.awaitUntil(new java.util.Date(d.getTime() + 2 * LONG_DELAY_MS))); |
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// break; |
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// } |
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// } |
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|
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// /** |
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// * Constructor sets given fairness, and is in unlocked state |
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// */ |
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// public void testConstructor() { |
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// PublicReentrantReadWriteLock lock; |
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|
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// lock = new PublicReentrantReadWriteLock(); |
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// assertFalse(lock.isFair()); |
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// assertNotWriteLocked(lock); |
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// assertEquals(0, lock.getReadLockCount()); |
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|
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// lock = new PublicReentrantReadWriteLock(true); |
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// assertTrue(lock.isFair()); |
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// assertNotWriteLocked(lock); |
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// assertEquals(0, lock.getReadLockCount()); |
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|
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// lock = new PublicReentrantReadWriteLock(false); |
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// assertFalse(lock.isFair()); |
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// assertNotWriteLocked(lock); |
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// assertEquals(0, lock.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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// */ |
208 |
// public void testLock() { testLock(false); } |
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// public void testLock_fair() { testLock(true); } |
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// public void testLock(boolean fair) { |
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// PublicReentrantReadWriteLock lock = |
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// new PublicReentrantReadWriteLock(fair); |
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// assertNotWriteLocked(lock); |
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// lock.writeLock().lock(); |
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// assertWriteLockedByMoi(lock); |
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// lock.writeLock().unlock(); |
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// assertNotWriteLocked(lock); |
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// assertEquals(0, lock.getReadLockCount()); |
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// lock.readLock().lock(); |
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// assertNotWriteLocked(lock); |
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// assertEquals(1, lock.getReadLockCount()); |
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// lock.readLock().unlock(); |
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// assertNotWriteLocked(lock); |
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// assertEquals(0, lock.getReadLockCount()); |
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// } |
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|
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// /** |
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// * getWriteHoldCount returns number of recursive holds |
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// */ |
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// public void testGetWriteHoldCount() { testGetWriteHoldCount(false); } |
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// public void testGetWriteHoldCount_fair() { testGetWriteHoldCount(true); } |
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// public void testGetWriteHoldCount(boolean fair) { |
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// ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair); |
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// for (int i = 1; i <= SIZE; i++) { |
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// lock.writeLock().lock(); |
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// assertEquals(i,lock.getWriteHoldCount()); |
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// } |
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// for (int i = SIZE; i > 0; i--) { |
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// lock.writeLock().unlock(); |
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// assertEquals(i-1,lock.getWriteHoldCount()); |
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// } |
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// } |
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|
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// /** |
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// * writelock.getHoldCount returns number of recursive holds |
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// */ |
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// public void testGetHoldCount() { testGetHoldCount(false); } |
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// public void testGetHoldCount_fair() { testGetHoldCount(true); } |
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// public void testGetHoldCount(boolean fair) { |
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// ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair); |
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// for (int i = 1; i <= SIZE; i++) { |
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// lock.writeLock().lock(); |
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// assertEquals(i,lock.writeLock().getHoldCount()); |
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// } |
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// for (int i = SIZE; i > 0; i--) { |
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// lock.writeLock().unlock(); |
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// assertEquals(i-1,lock.writeLock().getHoldCount()); |
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// } |
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// } |
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|
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// /** |
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// * getReadHoldCount returns number of recursive holds |
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// */ |
264 |
// public void testGetReadHoldCount() { testGetReadHoldCount(false); } |
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// public void testGetReadHoldCount_fair() { testGetReadHoldCount(true); } |
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// public void testGetReadHoldCount(boolean fair) { |
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// ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair); |
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// for (int i = 1; i <= SIZE; i++) { |
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// lock.readLock().lock(); |
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// assertEquals(i,lock.getReadHoldCount()); |
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// } |
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// for (int i = SIZE; i > 0; i--) { |
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// lock.readLock().unlock(); |
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// assertEquals(i-1,lock.getReadHoldCount()); |
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// } |
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// } |
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|
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// /** |
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// * write-unlocking an unlocked lock throws IllegalMonitorStateException |
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// */ |
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// public void testWriteUnlock_IMSE() { testWriteUnlock_IMSE(false); } |
282 |
// public void testWriteUnlock_IMSE_fair() { testWriteUnlock_IMSE(true); } |
283 |
// public void testWriteUnlock_IMSE(boolean fair) { |
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// ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair); |
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// try { |
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// lock.writeLock().unlock(); |
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// shouldThrow(); |
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// } catch (IllegalMonitorStateException success) {} |
289 |
// } |
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|
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// /** |
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// * read-unlocking an unlocked lock throws IllegalMonitorStateException |
293 |
// */ |
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// public void testReadUnlock_IMSE() { testReadUnlock_IMSE(false); } |
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// public void testReadUnlock_IMSE_fair() { testReadUnlock_IMSE(true); } |
296 |
// public void testReadUnlock_IMSE(boolean fair) { |
297 |
// ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair); |
298 |
// try { |
299 |
// lock.readLock().unlock(); |
300 |
// shouldThrow(); |
301 |
// } catch (IllegalMonitorStateException success) {} |
302 |
// } |
303 |
|
304 |
// /** |
305 |
// * write-lockInterruptibly is interruptible |
306 |
// */ |
307 |
// public void testWriteLockInterruptibly_Interruptible() { testWriteLockInterruptibly_Interruptible(false); } |
308 |
// public void testWriteLockInterruptibly_Interruptible_fair() { testWriteLockInterruptibly_Interruptible(true); } |
309 |
// public void testWriteLockInterruptibly_Interruptible(boolean fair) { |
310 |
// final PublicReentrantReadWriteLock lock = |
311 |
// new PublicReentrantReadWriteLock(fair); |
312 |
// lock.writeLock().lock(); |
313 |
// Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
314 |
// public void realRun() throws InterruptedException { |
315 |
// lock.writeLock().lockInterruptibly(); |
316 |
// }}); |
317 |
|
318 |
// waitForQueuedThread(lock, t); |
319 |
// t.interrupt(); |
320 |
// awaitTermination(t); |
321 |
// releaseWriteLock(lock); |
322 |
// } |
323 |
|
324 |
// /** |
325 |
// * timed write-tryLock is interruptible |
326 |
// */ |
327 |
// public void testWriteTryLock_Interruptible() { testWriteTryLock_Interruptible(false); } |
328 |
// public void testWriteTryLock_Interruptible_fair() { testWriteTryLock_Interruptible(true); } |
329 |
// public void testWriteTryLock_Interruptible(boolean fair) { |
330 |
// final PublicReentrantReadWriteLock lock = |
331 |
// new PublicReentrantReadWriteLock(fair); |
332 |
// lock.writeLock().lock(); |
333 |
// Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
334 |
// public void realRun() throws InterruptedException { |
335 |
// lock.writeLock().tryLock(2 * LONG_DELAY_MS, MILLISECONDS); |
336 |
// }}); |
337 |
|
338 |
// waitForQueuedThread(lock, t); |
339 |
// t.interrupt(); |
340 |
// awaitTermination(t); |
341 |
// releaseWriteLock(lock); |
342 |
// } |
343 |
|
344 |
// /** |
345 |
// * read-lockInterruptibly is interruptible |
346 |
// */ |
347 |
// public void testReadLockInterruptibly_Interruptible() { testReadLockInterruptibly_Interruptible(false); } |
348 |
// public void testReadLockInterruptibly_Interruptible_fair() { testReadLockInterruptibly_Interruptible(true); } |
349 |
// public void testReadLockInterruptibly_Interruptible(boolean fair) { |
350 |
// final PublicReentrantReadWriteLock lock = |
351 |
// new PublicReentrantReadWriteLock(fair); |
352 |
// lock.writeLock().lock(); |
353 |
// Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
354 |
// public void realRun() throws InterruptedException { |
355 |
// lock.readLock().lockInterruptibly(); |
356 |
// }}); |
357 |
|
358 |
// waitForQueuedThread(lock, t); |
359 |
// t.interrupt(); |
360 |
// awaitTermination(t); |
361 |
// releaseWriteLock(lock); |
362 |
// } |
363 |
|
364 |
// /** |
365 |
// * timed read-tryLock is interruptible |
366 |
// */ |
367 |
// public void testReadTryLock_Interruptible() { testReadTryLock_Interruptible(false); } |
368 |
// public void testReadTryLock_Interruptible_fair() { testReadTryLock_Interruptible(true); } |
369 |
// public void testReadTryLock_Interruptible(boolean fair) { |
370 |
// final PublicReentrantReadWriteLock lock = |
371 |
// new PublicReentrantReadWriteLock(fair); |
372 |
// lock.writeLock().lock(); |
373 |
// Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
374 |
// public void realRun() throws InterruptedException { |
375 |
// lock.readLock().tryLock(2 * LONG_DELAY_MS, MILLISECONDS); |
376 |
// }}); |
377 |
|
378 |
// waitForQueuedThread(lock, t); |
379 |
// t.interrupt(); |
380 |
// awaitTermination(t); |
381 |
// releaseWriteLock(lock); |
382 |
// } |
383 |
|
384 |
// /** |
385 |
// * write-tryLock on an unlocked lock succeeds |
386 |
// */ |
387 |
// public void testWriteTryLock() { testWriteTryLock(false); } |
388 |
// public void testWriteTryLock_fair() { testWriteTryLock(true); } |
389 |
// public void testWriteTryLock(boolean fair) { |
390 |
// final PublicReentrantReadWriteLock lock = |
391 |
// new PublicReentrantReadWriteLock(fair); |
392 |
// assertTrue(lock.writeLock().tryLock()); |
393 |
// assertWriteLockedByMoi(lock); |
394 |
// assertTrue(lock.writeLock().tryLock()); |
395 |
// assertWriteLockedByMoi(lock); |
396 |
// lock.writeLock().unlock(); |
397 |
// releaseWriteLock(lock); |
398 |
// } |
399 |
|
400 |
// /** |
401 |
// * write-tryLock fails if locked |
402 |
// */ |
403 |
// public void testWriteTryLockWhenLocked() { testWriteTryLockWhenLocked(false); } |
404 |
// public void testWriteTryLockWhenLocked_fair() { testWriteTryLockWhenLocked(true); } |
405 |
// public void testWriteTryLockWhenLocked(boolean fair) { |
406 |
// final PublicReentrantReadWriteLock lock = |
407 |
// new PublicReentrantReadWriteLock(fair); |
408 |
// lock.writeLock().lock(); |
409 |
// Thread t = newStartedThread(new CheckedRunnable() { |
410 |
// public void realRun() { |
411 |
// assertFalse(lock.writeLock().tryLock()); |
412 |
// }}); |
413 |
|
414 |
// awaitTermination(t); |
415 |
// releaseWriteLock(lock); |
416 |
// } |
417 |
|
418 |
// /** |
419 |
// * read-tryLock fails if locked |
420 |
// */ |
421 |
// public void testReadTryLockWhenLocked() { testReadTryLockWhenLocked(false); } |
422 |
// public void testReadTryLockWhenLocked_fair() { testReadTryLockWhenLocked(true); } |
423 |
// public void testReadTryLockWhenLocked(boolean fair) { |
424 |
// final PublicReentrantReadWriteLock lock = |
425 |
// new PublicReentrantReadWriteLock(fair); |
426 |
// lock.writeLock().lock(); |
427 |
// Thread t = newStartedThread(new CheckedRunnable() { |
428 |
// public void realRun() { |
429 |
// assertFalse(lock.readLock().tryLock()); |
430 |
// }}); |
431 |
|
432 |
// awaitTermination(t); |
433 |
// releaseWriteLock(lock); |
434 |
// } |
435 |
|
436 |
// /** |
437 |
// * Multiple threads can hold a read lock when not write-locked |
438 |
// */ |
439 |
// public void testMultipleReadLocks() { testMultipleReadLocks(false); } |
440 |
// public void testMultipleReadLocks_fair() { testMultipleReadLocks(true); } |
441 |
// public void testMultipleReadLocks(boolean fair) { |
442 |
// final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair); |
443 |
// lock.readLock().lock(); |
444 |
// Thread t = newStartedThread(new CheckedRunnable() { |
445 |
// public void realRun() throws InterruptedException { |
446 |
// assertTrue(lock.readLock().tryLock()); |
447 |
// lock.readLock().unlock(); |
448 |
// assertTrue(lock.readLock().tryLock(LONG_DELAY_MS, MILLISECONDS)); |
449 |
// lock.readLock().unlock(); |
450 |
// lock.readLock().lock(); |
451 |
// lock.readLock().unlock(); |
452 |
// }}); |
453 |
|
454 |
// awaitTermination(t); |
455 |
// lock.readLock().unlock(); |
456 |
// } |
457 |
|
458 |
// /** |
459 |
// * A writelock succeeds only after a reading thread unlocks |
460 |
// */ |
461 |
// public void testWriteAfterReadLock() { testWriteAfterReadLock(false); } |
462 |
// public void testWriteAfterReadLock_fair() { testWriteAfterReadLock(true); } |
463 |
// public void testWriteAfterReadLock(boolean fair) { |
464 |
// final PublicReentrantReadWriteLock lock = |
465 |
// new PublicReentrantReadWriteLock(fair); |
466 |
// lock.readLock().lock(); |
467 |
// Thread t = newStartedThread(new CheckedRunnable() { |
468 |
// public void realRun() { |
469 |
// assertEquals(1, lock.getReadLockCount()); |
470 |
// lock.writeLock().lock(); |
471 |
// assertEquals(0, lock.getReadLockCount()); |
472 |
// lock.writeLock().unlock(); |
473 |
// }}); |
474 |
// waitForQueuedThread(lock, t); |
475 |
// assertNotWriteLocked(lock); |
476 |
// assertEquals(1, lock.getReadLockCount()); |
477 |
// lock.readLock().unlock(); |
478 |
// assertEquals(0, lock.getReadLockCount()); |
479 |
// awaitTermination(t); |
480 |
// assertNotWriteLocked(lock); |
481 |
// } |
482 |
|
483 |
// /** |
484 |
// * A writelock succeeds only after reading threads unlock |
485 |
// */ |
486 |
// public void testWriteAfterMultipleReadLocks() { testWriteAfterMultipleReadLocks(false); } |
487 |
// public void testWriteAfterMultipleReadLocks_fair() { testWriteAfterMultipleReadLocks(true); } |
488 |
// public void testWriteAfterMultipleReadLocks(boolean fair) { |
489 |
// final PublicReentrantReadWriteLock lock = |
490 |
// new PublicReentrantReadWriteLock(fair); |
491 |
// lock.readLock().lock(); |
492 |
// lock.readLock().lock(); |
493 |
// Thread t1 = newStartedThread(new CheckedRunnable() { |
494 |
// public void realRun() { |
495 |
// lock.readLock().lock(); |
496 |
// assertEquals(3, lock.getReadLockCount()); |
497 |
// lock.readLock().unlock(); |
498 |
// }}); |
499 |
// awaitTermination(t1); |
500 |
|
501 |
// Thread t2 = newStartedThread(new CheckedRunnable() { |
502 |
// public void realRun() { |
503 |
// assertEquals(2, lock.getReadLockCount()); |
504 |
// lock.writeLock().lock(); |
505 |
// assertEquals(0, lock.getReadLockCount()); |
506 |
// lock.writeLock().unlock(); |
507 |
// }}); |
508 |
// waitForQueuedThread(lock, t2); |
509 |
// assertNotWriteLocked(lock); |
510 |
// assertEquals(2, lock.getReadLockCount()); |
511 |
// lock.readLock().unlock(); |
512 |
// lock.readLock().unlock(); |
513 |
// assertEquals(0, lock.getReadLockCount()); |
514 |
// awaitTermination(t2); |
515 |
// assertNotWriteLocked(lock); |
516 |
// } |
517 |
|
518 |
// /** |
519 |
// * A thread that tries to acquire a fair read lock (non-reentrantly) |
520 |
// * will block if there is a waiting writer thread |
521 |
// */ |
522 |
// public void testReaderWriterReaderFairFifo() { |
523 |
// final PublicReentrantReadWriteLock lock = |
524 |
// new PublicReentrantReadWriteLock(true); |
525 |
// final AtomicBoolean t1GotLock = new AtomicBoolean(false); |
526 |
|
527 |
// lock.readLock().lock(); |
528 |
// Thread t1 = newStartedThread(new CheckedRunnable() { |
529 |
// public void realRun() { |
530 |
// assertEquals(1, lock.getReadLockCount()); |
531 |
// lock.writeLock().lock(); |
532 |
// assertEquals(0, lock.getReadLockCount()); |
533 |
// t1GotLock.set(true); |
534 |
// lock.writeLock().unlock(); |
535 |
// }}); |
536 |
// waitForQueuedThread(lock, t1); |
537 |
|
538 |
// Thread t2 = newStartedThread(new CheckedRunnable() { |
539 |
// public void realRun() { |
540 |
// assertEquals(1, lock.getReadLockCount()); |
541 |
// lock.readLock().lock(); |
542 |
// assertEquals(1, lock.getReadLockCount()); |
543 |
// assertTrue(t1GotLock.get()); |
544 |
// lock.readLock().unlock(); |
545 |
// }}); |
546 |
// waitForQueuedThread(lock, t2); |
547 |
// assertTrue(t1.isAlive()); |
548 |
// assertNotWriteLocked(lock); |
549 |
// assertEquals(1, lock.getReadLockCount()); |
550 |
// lock.readLock().unlock(); |
551 |
// awaitTermination(t1); |
552 |
// awaitTermination(t2); |
553 |
// assertNotWriteLocked(lock); |
554 |
// } |
555 |
|
556 |
// /** |
557 |
// * Readlocks succeed only after a writing thread unlocks |
558 |
// */ |
559 |
// public void testReadAfterWriteLock() { testReadAfterWriteLock(false); } |
560 |
// public void testReadAfterWriteLock_fair() { testReadAfterWriteLock(true); } |
561 |
// public void testReadAfterWriteLock(boolean fair) { |
562 |
// final PublicReentrantReadWriteLock lock = |
563 |
// new PublicReentrantReadWriteLock(fair); |
564 |
// lock.writeLock().lock(); |
565 |
// Thread t1 = newStartedThread(new CheckedRunnable() { |
566 |
// public void realRun() { |
567 |
// lock.readLock().lock(); |
568 |
// lock.readLock().unlock(); |
569 |
// }}); |
570 |
// Thread t2 = newStartedThread(new CheckedRunnable() { |
571 |
// public void realRun() { |
572 |
// lock.readLock().lock(); |
573 |
// lock.readLock().unlock(); |
574 |
// }}); |
575 |
|
576 |
// waitForQueuedThread(lock, t1); |
577 |
// waitForQueuedThread(lock, t2); |
578 |
// releaseWriteLock(lock); |
579 |
// awaitTermination(t1); |
580 |
// awaitTermination(t2); |
581 |
// } |
582 |
|
583 |
// /** |
584 |
// * Read trylock succeeds if write locked by current thread |
585 |
// */ |
586 |
// public void testReadHoldingWriteLock() { testReadHoldingWriteLock(false); } |
587 |
// public void testReadHoldingWriteLock_fair() { testReadHoldingWriteLock(true); } |
588 |
// public void testReadHoldingWriteLock(boolean fair) { |
589 |
// final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair); |
590 |
// lock.writeLock().lock(); |
591 |
// assertTrue(lock.readLock().tryLock()); |
592 |
// lock.readLock().unlock(); |
593 |
// lock.writeLock().unlock(); |
594 |
// } |
595 |
|
596 |
// /** |
597 |
// * Read trylock succeeds (barging) even in the presence of waiting |
598 |
// * readers and/or writers |
599 |
// */ |
600 |
// public void testReadTryLockBarging() { testReadTryLockBarging(false); } |
601 |
// public void testReadTryLockBarging_fair() { testReadTryLockBarging(true); } |
602 |
// public void testReadTryLockBarging(boolean fair) { |
603 |
// final PublicReentrantReadWriteLock lock = |
604 |
// new PublicReentrantReadWriteLock(fair); |
605 |
// lock.readLock().lock(); |
606 |
|
607 |
// Thread t1 = newStartedThread(new CheckedRunnable() { |
608 |
// public void realRun() { |
609 |
// lock.writeLock().lock(); |
610 |
// lock.writeLock().unlock(); |
611 |
// }}); |
612 |
|
613 |
// waitForQueuedThread(lock, t1); |
614 |
|
615 |
// Thread t2 = newStartedThread(new CheckedRunnable() { |
616 |
// public void realRun() { |
617 |
// lock.readLock().lock(); |
618 |
// lock.readLock().unlock(); |
619 |
// }}); |
620 |
|
621 |
// if (fair) |
622 |
// waitForQueuedThread(lock, t2); |
623 |
|
624 |
// Thread t3 = newStartedThread(new CheckedRunnable() { |
625 |
// public void realRun() { |
626 |
// lock.readLock().tryLock(); |
627 |
// lock.readLock().unlock(); |
628 |
// }}); |
629 |
|
630 |
// assertTrue(lock.getReadLockCount() > 0); |
631 |
// awaitTermination(t3); |
632 |
// assertTrue(t1.isAlive()); |
633 |
// if (fair) assertTrue(t2.isAlive()); |
634 |
// lock.readLock().unlock(); |
635 |
// awaitTermination(t1); |
636 |
// awaitTermination(t2); |
637 |
// } |
638 |
|
639 |
// /** |
640 |
// * Read lock succeeds if write locked by current thread even if |
641 |
// * other threads are waiting for readlock |
642 |
// */ |
643 |
// public void testReadHoldingWriteLock2() { testReadHoldingWriteLock2(false); } |
644 |
// public void testReadHoldingWriteLock2_fair() { testReadHoldingWriteLock2(true); } |
645 |
// public void testReadHoldingWriteLock2(boolean fair) { |
646 |
// final PublicReentrantReadWriteLock lock = |
647 |
// new PublicReentrantReadWriteLock(fair); |
648 |
// lock.writeLock().lock(); |
649 |
// lock.readLock().lock(); |
650 |
// lock.readLock().unlock(); |
651 |
|
652 |
// Thread t1 = newStartedThread(new CheckedRunnable() { |
653 |
// public void realRun() { |
654 |
// lock.readLock().lock(); |
655 |
// lock.readLock().unlock(); |
656 |
// }}); |
657 |
// Thread t2 = newStartedThread(new CheckedRunnable() { |
658 |
// public void realRun() { |
659 |
// lock.readLock().lock(); |
660 |
// lock.readLock().unlock(); |
661 |
// }}); |
662 |
|
663 |
// waitForQueuedThread(lock, t1); |
664 |
// waitForQueuedThread(lock, t2); |
665 |
// assertWriteLockedByMoi(lock); |
666 |
// lock.readLock().lock(); |
667 |
// lock.readLock().unlock(); |
668 |
// releaseWriteLock(lock); |
669 |
// awaitTermination(t1); |
670 |
// awaitTermination(t2); |
671 |
// } |
672 |
|
673 |
// /** |
674 |
// * Read lock succeeds if write locked by current thread even if |
675 |
// * other threads are waiting for writelock |
676 |
// */ |
677 |
// public void testReadHoldingWriteLock3() { testReadHoldingWriteLock3(false); } |
678 |
// public void testReadHoldingWriteLock3_fair() { testReadHoldingWriteLock3(true); } |
679 |
// public void testReadHoldingWriteLock3(boolean fair) { |
680 |
// final PublicReentrantReadWriteLock lock = |
681 |
// new PublicReentrantReadWriteLock(fair); |
682 |
// lock.writeLock().lock(); |
683 |
// lock.readLock().lock(); |
684 |
// lock.readLock().unlock(); |
685 |
|
686 |
// Thread t1 = newStartedThread(new CheckedRunnable() { |
687 |
// public void realRun() { |
688 |
// lock.writeLock().lock(); |
689 |
// lock.writeLock().unlock(); |
690 |
// }}); |
691 |
// Thread t2 = newStartedThread(new CheckedRunnable() { |
692 |
// public void realRun() { |
693 |
// lock.writeLock().lock(); |
694 |
// lock.writeLock().unlock(); |
695 |
// }}); |
696 |
|
697 |
// waitForQueuedThread(lock, t1); |
698 |
// waitForQueuedThread(lock, t2); |
699 |
// assertWriteLockedByMoi(lock); |
700 |
// lock.readLock().lock(); |
701 |
// lock.readLock().unlock(); |
702 |
// assertWriteLockedByMoi(lock); |
703 |
// lock.writeLock().unlock(); |
704 |
// awaitTermination(t1); |
705 |
// awaitTermination(t2); |
706 |
// } |
707 |
|
708 |
// /** |
709 |
// * Write lock succeeds if write locked by current thread even if |
710 |
// * other threads are waiting for writelock |
711 |
// */ |
712 |
// public void testWriteHoldingWriteLock4() { testWriteHoldingWriteLock4(false); } |
713 |
// public void testWriteHoldingWriteLock4_fair() { testWriteHoldingWriteLock4(true); } |
714 |
// public void testWriteHoldingWriteLock4(boolean fair) { |
715 |
// final PublicReentrantReadWriteLock lock = |
716 |
// new PublicReentrantReadWriteLock(fair); |
717 |
// lock.writeLock().lock(); |
718 |
// lock.writeLock().lock(); |
719 |
// lock.writeLock().unlock(); |
720 |
|
721 |
// Thread t1 = newStartedThread(new CheckedRunnable() { |
722 |
// public void realRun() { |
723 |
// lock.writeLock().lock(); |
724 |
// lock.writeLock().unlock(); |
725 |
// }}); |
726 |
// Thread t2 = newStartedThread(new CheckedRunnable() { |
727 |
// public void realRun() { |
728 |
// lock.writeLock().lock(); |
729 |
// lock.writeLock().unlock(); |
730 |
// }}); |
731 |
|
732 |
// waitForQueuedThread(lock, t1); |
733 |
// waitForQueuedThread(lock, t2); |
734 |
// assertWriteLockedByMoi(lock); |
735 |
// assertEquals(1, lock.getWriteHoldCount()); |
736 |
// lock.writeLock().lock(); |
737 |
// assertWriteLockedByMoi(lock); |
738 |
// assertEquals(2, lock.getWriteHoldCount()); |
739 |
// lock.writeLock().unlock(); |
740 |
// assertWriteLockedByMoi(lock); |
741 |
// assertEquals(1, lock.getWriteHoldCount()); |
742 |
// lock.writeLock().unlock(); |
743 |
// awaitTermination(t1); |
744 |
// awaitTermination(t2); |
745 |
// } |
746 |
|
747 |
// /** |
748 |
// * Read tryLock succeeds if readlocked but not writelocked |
749 |
// */ |
750 |
// public void testTryLockWhenReadLocked() { testTryLockWhenReadLocked(false); } |
751 |
// public void testTryLockWhenReadLocked_fair() { testTryLockWhenReadLocked(true); } |
752 |
// public void testTryLockWhenReadLocked(boolean fair) { |
753 |
// final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair); |
754 |
// lock.readLock().lock(); |
755 |
// Thread t = newStartedThread(new CheckedRunnable() { |
756 |
// public void realRun() { |
757 |
// assertTrue(lock.readLock().tryLock()); |
758 |
// lock.readLock().unlock(); |
759 |
// }}); |
760 |
|
761 |
// awaitTermination(t); |
762 |
// lock.readLock().unlock(); |
763 |
// } |
764 |
|
765 |
// /** |
766 |
// * write tryLock fails when readlocked |
767 |
// */ |
768 |
// public void testWriteTryLockWhenReadLocked() { testWriteTryLockWhenReadLocked(false); } |
769 |
// public void testWriteTryLockWhenReadLocked_fair() { testWriteTryLockWhenReadLocked(true); } |
770 |
// public void testWriteTryLockWhenReadLocked(boolean fair) { |
771 |
// final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair); |
772 |
// lock.readLock().lock(); |
773 |
// Thread t = newStartedThread(new CheckedRunnable() { |
774 |
// public void realRun() { |
775 |
// assertFalse(lock.writeLock().tryLock()); |
776 |
// }}); |
777 |
|
778 |
// awaitTermination(t); |
779 |
// lock.readLock().unlock(); |
780 |
// } |
781 |
|
782 |
// /** |
783 |
// * write timed tryLock times out if locked |
784 |
// */ |
785 |
// public void testWriteTryLock_Timeout() { testWriteTryLock_Timeout(false); } |
786 |
// public void testWriteTryLock_Timeout_fair() { testWriteTryLock_Timeout(true); } |
787 |
// public void testWriteTryLock_Timeout(boolean fair) { |
788 |
// final PublicReentrantReadWriteLock lock = |
789 |
// new PublicReentrantReadWriteLock(fair); |
790 |
// lock.writeLock().lock(); |
791 |
// Thread t = newStartedThread(new CheckedRunnable() { |
792 |
// public void realRun() throws InterruptedException { |
793 |
// long startTime = System.nanoTime(); |
794 |
// long timeoutMillis = 10; |
795 |
// assertFalse(lock.writeLock().tryLock(timeoutMillis, MILLISECONDS)); |
796 |
// assertTrue(millisElapsedSince(startTime) >= timeoutMillis); |
797 |
// }}); |
798 |
|
799 |
// awaitTermination(t); |
800 |
// releaseWriteLock(lock); |
801 |
// } |
802 |
|
803 |
// /** |
804 |
// * read timed tryLock times out if write-locked |
805 |
// */ |
806 |
// public void testReadTryLock_Timeout() { testReadTryLock_Timeout(false); } |
807 |
// public void testReadTryLock_Timeout_fair() { testReadTryLock_Timeout(true); } |
808 |
// public void testReadTryLock_Timeout(boolean fair) { |
809 |
// final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair); |
810 |
// lock.writeLock().lock(); |
811 |
// Thread t = newStartedThread(new CheckedRunnable() { |
812 |
// public void realRun() throws InterruptedException { |
813 |
// long startTime = System.nanoTime(); |
814 |
// long timeoutMillis = 10; |
815 |
// assertFalse(lock.readLock().tryLock(timeoutMillis, MILLISECONDS)); |
816 |
// assertTrue(millisElapsedSince(startTime) >= timeoutMillis); |
817 |
// }}); |
818 |
|
819 |
// awaitTermination(t); |
820 |
// assertTrue(lock.writeLock().isHeldByCurrentThread()); |
821 |
// lock.writeLock().unlock(); |
822 |
// } |
823 |
|
824 |
// /** |
825 |
// * write lockInterruptibly succeeds if unlocked, else is interruptible |
826 |
// */ |
827 |
// public void testWriteLockInterruptibly() { testWriteLockInterruptibly(false); } |
828 |
// public void testWriteLockInterruptibly_fair() { testWriteLockInterruptibly(true); } |
829 |
// public void testWriteLockInterruptibly(boolean fair) { |
830 |
// final PublicReentrantReadWriteLock lock = |
831 |
// new PublicReentrantReadWriteLock(fair); |
832 |
// try { |
833 |
// lock.writeLock().lockInterruptibly(); |
834 |
// } catch (InterruptedException ie) { |
835 |
// threadUnexpectedException(ie); |
836 |
// } |
837 |
// Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
838 |
// public void realRun() throws InterruptedException { |
839 |
// lock.writeLock().lockInterruptibly(); |
840 |
// }}); |
841 |
|
842 |
// waitForQueuedThread(lock, t); |
843 |
// t.interrupt(); |
844 |
// assertTrue(lock.writeLock().isHeldByCurrentThread()); |
845 |
// awaitTermination(t); |
846 |
// releaseWriteLock(lock); |
847 |
// } |
848 |
|
849 |
// /** |
850 |
// * read lockInterruptibly succeeds if lock free else is interruptible |
851 |
// */ |
852 |
// public void testReadLockInterruptibly() { testReadLockInterruptibly(false); } |
853 |
// public void testReadLockInterruptibly_fair() { testReadLockInterruptibly(true); } |
854 |
// public void testReadLockInterruptibly(boolean fair) { |
855 |
// final PublicReentrantReadWriteLock lock = |
856 |
// new PublicReentrantReadWriteLock(fair); |
857 |
// try { |
858 |
// lock.readLock().lockInterruptibly(); |
859 |
// lock.readLock().unlock(); |
860 |
// lock.writeLock().lockInterruptibly(); |
861 |
// } catch (InterruptedException ie) { |
862 |
// threadUnexpectedException(ie); |
863 |
// } |
864 |
// Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
865 |
// public void realRun() throws InterruptedException { |
866 |
// lock.readLock().lockInterruptibly(); |
867 |
// }}); |
868 |
|
869 |
// waitForQueuedThread(lock, t); |
870 |
// t.interrupt(); |
871 |
// awaitTermination(t); |
872 |
// releaseWriteLock(lock); |
873 |
// } |
874 |
|
875 |
// /** |
876 |
// * Calling await without holding lock throws IllegalMonitorStateException |
877 |
// */ |
878 |
// public void testAwait_IMSE() { testAwait_IMSE(false); } |
879 |
// public void testAwait_IMSE_fair() { testAwait_IMSE(true); } |
880 |
// public void testAwait_IMSE(boolean fair) { |
881 |
// final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair); |
882 |
// final Condition c = lock.writeLock().newCondition(); |
883 |
// for (AwaitMethod awaitMethod : AwaitMethod.values()) { |
884 |
// long startTime = System.nanoTime(); |
885 |
// try { |
886 |
// await(c, awaitMethod); |
887 |
// shouldThrow(); |
888 |
// } catch (IllegalMonitorStateException success) { |
889 |
// } catch (InterruptedException e) { threadUnexpectedException(e); } |
890 |
// assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
891 |
// } |
892 |
// } |
893 |
|
894 |
// /** |
895 |
// * Calling signal without holding lock throws IllegalMonitorStateException |
896 |
// */ |
897 |
// public void testSignal_IMSE() { testSignal_IMSE(false); } |
898 |
// public void testSignal_IMSE_fair() { testSignal_IMSE(true); } |
899 |
// public void testSignal_IMSE(boolean fair) { |
900 |
// final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair); |
901 |
// final Condition c = lock.writeLock().newCondition(); |
902 |
// try { |
903 |
// c.signal(); |
904 |
// shouldThrow(); |
905 |
// } catch (IllegalMonitorStateException success) {} |
906 |
// } |
907 |
|
908 |
// /** |
909 |
// * Calling signalAll without holding lock throws IllegalMonitorStateException |
910 |
// */ |
911 |
// public void testSignalAll_IMSE() { testSignalAll_IMSE(false); } |
912 |
// public void testSignalAll_IMSE_fair() { testSignalAll_IMSE(true); } |
913 |
// public void testSignalAll_IMSE(boolean fair) { |
914 |
// final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair); |
915 |
// final Condition c = lock.writeLock().newCondition(); |
916 |
// try { |
917 |
// c.signalAll(); |
918 |
// shouldThrow(); |
919 |
// } catch (IllegalMonitorStateException success) {} |
920 |
// } |
921 |
|
922 |
// /** |
923 |
// * awaitNanos without a signal times out |
924 |
// */ |
925 |
// public void testAwaitNanos_Timeout() { testAwaitNanos_Timeout(false); } |
926 |
// public void testAwaitNanos_Timeout_fair() { testAwaitNanos_Timeout(true); } |
927 |
// public void testAwaitNanos_Timeout(boolean fair) { |
928 |
// try { |
929 |
// final ReentrantReadWriteLock lock = |
930 |
// new ReentrantReadWriteLock(fair); |
931 |
// final Condition c = lock.writeLock().newCondition(); |
932 |
// lock.writeLock().lock(); |
933 |
// long startTime = System.nanoTime(); |
934 |
// long timeoutMillis = 10; |
935 |
// long timeoutNanos = MILLISECONDS.toNanos(timeoutMillis); |
936 |
// long nanosRemaining = c.awaitNanos(timeoutNanos); |
937 |
// assertTrue(nanosRemaining <= 0); |
938 |
// assertTrue(millisElapsedSince(startTime) >= timeoutMillis); |
939 |
// lock.writeLock().unlock(); |
940 |
// } catch (InterruptedException e) { |
941 |
// threadUnexpectedException(e); |
942 |
// } |
943 |
// } |
944 |
|
945 |
// /** |
946 |
// * timed await without a signal times out |
947 |
// */ |
948 |
// public void testAwait_Timeout() { testAwait_Timeout(false); } |
949 |
// public void testAwait_Timeout_fair() { testAwait_Timeout(true); } |
950 |
// public void testAwait_Timeout(boolean fair) { |
951 |
// try { |
952 |
// final ReentrantReadWriteLock lock = |
953 |
// new ReentrantReadWriteLock(fair); |
954 |
// final Condition c = lock.writeLock().newCondition(); |
955 |
// lock.writeLock().lock(); |
956 |
// long startTime = System.nanoTime(); |
957 |
// long timeoutMillis = 10; |
958 |
// assertFalse(c.await(timeoutMillis, MILLISECONDS)); |
959 |
// assertTrue(millisElapsedSince(startTime) >= timeoutMillis); |
960 |
// lock.writeLock().unlock(); |
961 |
// } catch (InterruptedException e) { |
962 |
// threadUnexpectedException(e); |
963 |
// } |
964 |
// } |
965 |
|
966 |
// /** |
967 |
// * awaitUntil without a signal times out |
968 |
// */ |
969 |
// public void testAwaitUntil_Timeout() { testAwaitUntil_Timeout(false); } |
970 |
// public void testAwaitUntil_Timeout_fair() { testAwaitUntil_Timeout(true); } |
971 |
// public void testAwaitUntil_Timeout(boolean fair) { |
972 |
// try { |
973 |
// final ReentrantReadWriteLock lock = |
974 |
// new ReentrantReadWriteLock(fair); |
975 |
// final Condition c = lock.writeLock().newCondition(); |
976 |
// lock.writeLock().lock(); |
977 |
// long startTime = System.nanoTime(); |
978 |
// long timeoutMillis = 10; |
979 |
// java.util.Date d = new java.util.Date(); |
980 |
// assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + timeoutMillis))); |
981 |
// assertTrue(millisElapsedSince(startTime) >= timeoutMillis); |
982 |
// lock.writeLock().unlock(); |
983 |
// } catch (InterruptedException e) { |
984 |
// threadUnexpectedException(e); |
985 |
// } |
986 |
// } |
987 |
|
988 |
// /** |
989 |
// * await returns when signalled |
990 |
// */ |
991 |
// public void testAwait() { testAwait(false); } |
992 |
// public void testAwait_fair() { testAwait(true); } |
993 |
// public void testAwait(boolean fair) { |
994 |
// final PublicReentrantReadWriteLock lock = |
995 |
// new PublicReentrantReadWriteLock(fair); |
996 |
// final Condition c = lock.writeLock().newCondition(); |
997 |
// final CountDownLatch locked = new CountDownLatch(1); |
998 |
// Thread t = newStartedThread(new CheckedRunnable() { |
999 |
// public void realRun() throws InterruptedException { |
1000 |
// lock.writeLock().lock(); |
1001 |
// locked.countDown(); |
1002 |
// c.await(); |
1003 |
// lock.writeLock().unlock(); |
1004 |
// }}); |
1005 |
|
1006 |
// await(locked); |
1007 |
// lock.writeLock().lock(); |
1008 |
// assertHasWaiters(lock, c, t); |
1009 |
// c.signal(); |
1010 |
// assertHasNoWaiters(lock, c); |
1011 |
// assertTrue(t.isAlive()); |
1012 |
// lock.writeLock().unlock(); |
1013 |
// awaitTermination(t); |
1014 |
// } |
1015 |
|
1016 |
// /** |
1017 |
// * awaitUninterruptibly is uninterruptible |
1018 |
// */ |
1019 |
// public void testAwaitUninterruptibly() { testAwaitUninterruptibly(false); } |
1020 |
// public void testAwaitUninterruptibly_fair() { testAwaitUninterruptibly(true); } |
1021 |
// public void testAwaitUninterruptibly(boolean fair) { |
1022 |
// final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair); |
1023 |
// final Condition c = lock.writeLock().newCondition(); |
1024 |
// final CountDownLatch pleaseInterrupt = new CountDownLatch(2); |
1025 |
|
1026 |
// Thread t1 = newStartedThread(new CheckedRunnable() { |
1027 |
// public void realRun() { |
1028 |
// // Interrupt before awaitUninterruptibly |
1029 |
// lock.writeLock().lock(); |
1030 |
// pleaseInterrupt.countDown(); |
1031 |
// Thread.currentThread().interrupt(); |
1032 |
// c.awaitUninterruptibly(); |
1033 |
// assertTrue(Thread.interrupted()); |
1034 |
// lock.writeLock().unlock(); |
1035 |
// }}); |
1036 |
|
1037 |
// Thread t2 = newStartedThread(new CheckedRunnable() { |
1038 |
// public void realRun() { |
1039 |
// // Interrupt during awaitUninterruptibly |
1040 |
// lock.writeLock().lock(); |
1041 |
// pleaseInterrupt.countDown(); |
1042 |
// c.awaitUninterruptibly(); |
1043 |
// assertTrue(Thread.interrupted()); |
1044 |
// lock.writeLock().unlock(); |
1045 |
// }}); |
1046 |
|
1047 |
// await(pleaseInterrupt); |
1048 |
// lock.writeLock().lock(); |
1049 |
// lock.writeLock().unlock(); |
1050 |
// t2.interrupt(); |
1051 |
|
1052 |
// assertThreadStaysAlive(t1); |
1053 |
// assertTrue(t2.isAlive()); |
1054 |
|
1055 |
// lock.writeLock().lock(); |
1056 |
// c.signalAll(); |
1057 |
// lock.writeLock().unlock(); |
1058 |
|
1059 |
// awaitTermination(t1); |
1060 |
// awaitTermination(t2); |
1061 |
// } |
1062 |
|
1063 |
// /** |
1064 |
// * await/awaitNanos/awaitUntil is interruptible |
1065 |
// */ |
1066 |
// public void testInterruptible_await() { testInterruptible(false, AwaitMethod.await); } |
1067 |
// public void testInterruptible_await_fair() { testInterruptible(true, AwaitMethod.await); } |
1068 |
// public void testInterruptible_awaitTimed() { testInterruptible(false, AwaitMethod.awaitTimed); } |
1069 |
// public void testInterruptible_awaitTimed_fair() { testInterruptible(true, AwaitMethod.awaitTimed); } |
1070 |
// public void testInterruptible_awaitNanos() { testInterruptible(false, AwaitMethod.awaitNanos); } |
1071 |
// public void testInterruptible_awaitNanos_fair() { testInterruptible(true, AwaitMethod.awaitNanos); } |
1072 |
// public void testInterruptible_awaitUntil() { testInterruptible(false, AwaitMethod.awaitUntil); } |
1073 |
// public void testInterruptible_awaitUntil_fair() { testInterruptible(true, AwaitMethod.awaitUntil); } |
1074 |
// public void testInterruptible(boolean fair, final AwaitMethod awaitMethod) { |
1075 |
// final PublicReentrantReadWriteLock lock = |
1076 |
// new PublicReentrantReadWriteLock(fair); |
1077 |
// final Condition c = lock.writeLock().newCondition(); |
1078 |
// final CountDownLatch locked = new CountDownLatch(1); |
1079 |
// Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
1080 |
// public void realRun() throws InterruptedException { |
1081 |
// lock.writeLock().lock(); |
1082 |
// assertWriteLockedByMoi(lock); |
1083 |
// assertHasNoWaiters(lock, c); |
1084 |
// locked.countDown(); |
1085 |
// try { |
1086 |
// await(c, awaitMethod); |
1087 |
// } finally { |
1088 |
// assertWriteLockedByMoi(lock); |
1089 |
// assertHasNoWaiters(lock, c); |
1090 |
// lock.writeLock().unlock(); |
1091 |
// assertFalse(Thread.interrupted()); |
1092 |
// } |
1093 |
// }}); |
1094 |
|
1095 |
// await(locked); |
1096 |
// assertHasWaiters(lock, c, t); |
1097 |
// t.interrupt(); |
1098 |
// awaitTermination(t); |
1099 |
// assertNotWriteLocked(lock); |
1100 |
// } |
1101 |
|
1102 |
// /** |
1103 |
// * signalAll wakes up all threads |
1104 |
// */ |
1105 |
// public void testSignalAll_await() { testSignalAll(false, AwaitMethod.await); } |
1106 |
// public void testSignalAll_await_fair() { testSignalAll(true, AwaitMethod.await); } |
1107 |
// public void testSignalAll_awaitTimed() { testSignalAll(false, AwaitMethod.awaitTimed); } |
1108 |
// public void testSignalAll_awaitTimed_fair() { testSignalAll(true, AwaitMethod.awaitTimed); } |
1109 |
// public void testSignalAll_awaitNanos() { testSignalAll(false, AwaitMethod.awaitNanos); } |
1110 |
// public void testSignalAll_awaitNanos_fair() { testSignalAll(true, AwaitMethod.awaitNanos); } |
1111 |
// public void testSignalAll_awaitUntil() { testSignalAll(false, AwaitMethod.awaitUntil); } |
1112 |
// public void testSignalAll_awaitUntil_fair() { testSignalAll(true, AwaitMethod.awaitUntil); } |
1113 |
// public void testSignalAll(boolean fair, final AwaitMethod awaitMethod) { |
1114 |
// final PublicReentrantReadWriteLock lock = |
1115 |
// new PublicReentrantReadWriteLock(fair); |
1116 |
// final Condition c = lock.writeLock().newCondition(); |
1117 |
// final CountDownLatch locked = new CountDownLatch(2); |
1118 |
// final Lock writeLock = lock.writeLock(); |
1119 |
// class Awaiter extends CheckedRunnable { |
1120 |
// public void realRun() throws InterruptedException { |
1121 |
// writeLock.lock(); |
1122 |
// locked.countDown(); |
1123 |
// await(c, awaitMethod); |
1124 |
// writeLock.unlock(); |
1125 |
// } |
1126 |
// } |
1127 |
|
1128 |
// Thread t1 = newStartedThread(new Awaiter()); |
1129 |
// Thread t2 = newStartedThread(new Awaiter()); |
1130 |
|
1131 |
// await(locked); |
1132 |
// writeLock.lock(); |
1133 |
// assertHasWaiters(lock, c, t1, t2); |
1134 |
// c.signalAll(); |
1135 |
// assertHasNoWaiters(lock, c); |
1136 |
// writeLock.unlock(); |
1137 |
// awaitTermination(t1); |
1138 |
// awaitTermination(t2); |
1139 |
// } |
1140 |
|
1141 |
// /** |
1142 |
// * signal wakes up waiting threads in FIFO order |
1143 |
// */ |
1144 |
// public void testSignalWakesFifo() { testSignalWakesFifo(false); } |
1145 |
// public void testSignalWakesFifo_fair() { testSignalWakesFifo(true); } |
1146 |
// public void testSignalWakesFifo(boolean fair) { |
1147 |
// final PublicReentrantReadWriteLock lock = |
1148 |
// new PublicReentrantReadWriteLock(fair); |
1149 |
// final Condition c = lock.writeLock().newCondition(); |
1150 |
// final CountDownLatch locked1 = new CountDownLatch(1); |
1151 |
// final CountDownLatch locked2 = new CountDownLatch(1); |
1152 |
// final Lock writeLock = lock.writeLock(); |
1153 |
// Thread t1 = newStartedThread(new CheckedRunnable() { |
1154 |
// public void realRun() throws InterruptedException { |
1155 |
// writeLock.lock(); |
1156 |
// locked1.countDown(); |
1157 |
// c.await(); |
1158 |
// writeLock.unlock(); |
1159 |
// }}); |
1160 |
|
1161 |
// await(locked1); |
1162 |
|
1163 |
// Thread t2 = newStartedThread(new CheckedRunnable() { |
1164 |
// public void realRun() throws InterruptedException { |
1165 |
// writeLock.lock(); |
1166 |
// locked2.countDown(); |
1167 |
// c.await(); |
1168 |
// writeLock.unlock(); |
1169 |
// }}); |
1170 |
|
1171 |
// await(locked2); |
1172 |
|
1173 |
// writeLock.lock(); |
1174 |
// assertHasWaiters(lock, c, t1, t2); |
1175 |
// assertFalse(lock.hasQueuedThreads()); |
1176 |
// c.signal(); |
1177 |
// assertHasWaiters(lock, c, t2); |
1178 |
// assertTrue(lock.hasQueuedThread(t1)); |
1179 |
// assertFalse(lock.hasQueuedThread(t2)); |
1180 |
// c.signal(); |
1181 |
// assertHasNoWaiters(lock, c); |
1182 |
// assertTrue(lock.hasQueuedThread(t1)); |
1183 |
// assertTrue(lock.hasQueuedThread(t2)); |
1184 |
// writeLock.unlock(); |
1185 |
// awaitTermination(t1); |
1186 |
// awaitTermination(t2); |
1187 |
// } |
1188 |
|
1189 |
// /** |
1190 |
// * await after multiple reentrant locking preserves lock count |
1191 |
// */ |
1192 |
// public void testAwaitLockCount() { testAwaitLockCount(false); } |
1193 |
// public void testAwaitLockCount_fair() { testAwaitLockCount(true); } |
1194 |
// public void testAwaitLockCount(boolean fair) { |
1195 |
// final PublicReentrantReadWriteLock lock = |
1196 |
// new PublicReentrantReadWriteLock(fair); |
1197 |
// final Condition c = lock.writeLock().newCondition(); |
1198 |
// final CountDownLatch locked = new CountDownLatch(2); |
1199 |
// Thread t1 = newStartedThread(new CheckedRunnable() { |
1200 |
// public void realRun() throws InterruptedException { |
1201 |
// lock.writeLock().lock(); |
1202 |
// assertWriteLockedByMoi(lock); |
1203 |
// assertEquals(1, lock.writeLock().getHoldCount()); |
1204 |
// locked.countDown(); |
1205 |
// c.await(); |
1206 |
// assertWriteLockedByMoi(lock); |
1207 |
// assertEquals(1, lock.writeLock().getHoldCount()); |
1208 |
// lock.writeLock().unlock(); |
1209 |
// }}); |
1210 |
|
1211 |
// Thread t2 = newStartedThread(new CheckedRunnable() { |
1212 |
// public void realRun() throws InterruptedException { |
1213 |
// lock.writeLock().lock(); |
1214 |
// lock.writeLock().lock(); |
1215 |
// assertWriteLockedByMoi(lock); |
1216 |
// assertEquals(2, lock.writeLock().getHoldCount()); |
1217 |
// locked.countDown(); |
1218 |
// c.await(); |
1219 |
// assertWriteLockedByMoi(lock); |
1220 |
// assertEquals(2, lock.writeLock().getHoldCount()); |
1221 |
// lock.writeLock().unlock(); |
1222 |
// lock.writeLock().unlock(); |
1223 |
// }}); |
1224 |
|
1225 |
// await(locked); |
1226 |
// lock.writeLock().lock(); |
1227 |
// assertHasWaiters(lock, c, t1, t2); |
1228 |
// c.signalAll(); |
1229 |
// assertHasNoWaiters(lock, c); |
1230 |
// lock.writeLock().unlock(); |
1231 |
// awaitTermination(t1); |
1232 |
// awaitTermination(t2); |
1233 |
// } |
1234 |
|
1235 |
// /** |
1236 |
// * A serialized lock deserializes as unlocked |
1237 |
// */ |
1238 |
// public void testSerialization() { testSerialization(false); } |
1239 |
// public void testSerialization_fair() { testSerialization(true); } |
1240 |
// public void testSerialization(boolean fair) { |
1241 |
// ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair); |
1242 |
// lock.writeLock().lock(); |
1243 |
// lock.readLock().lock(); |
1244 |
|
1245 |
// ReentrantReadWriteLock clone = serialClone(lock); |
1246 |
// assertEquals(lock.isFair(), clone.isFair()); |
1247 |
// assertTrue(lock.isWriteLocked()); |
1248 |
// assertFalse(clone.isWriteLocked()); |
1249 |
// assertEquals(1, lock.getReadLockCount()); |
1250 |
// assertEquals(0, clone.getReadLockCount()); |
1251 |
// clone.writeLock().lock(); |
1252 |
// clone.readLock().lock(); |
1253 |
// assertTrue(clone.isWriteLocked()); |
1254 |
// assertEquals(1, clone.getReadLockCount()); |
1255 |
// clone.readLock().unlock(); |
1256 |
// clone.writeLock().unlock(); |
1257 |
// assertFalse(clone.isWriteLocked()); |
1258 |
// assertEquals(1, lock.getReadLockCount()); |
1259 |
// assertEquals(0, clone.getReadLockCount()); |
1260 |
// } |
1261 |
|
1262 |
// /** |
1263 |
// * hasQueuedThreads reports whether there are waiting threads |
1264 |
// */ |
1265 |
// public void testHasQueuedThreads() { testHasQueuedThreads(false); } |
1266 |
// public void testHasQueuedThreads_fair() { testHasQueuedThreads(true); } |
1267 |
// public void testHasQueuedThreads(boolean fair) { |
1268 |
// final PublicReentrantReadWriteLock lock = |
1269 |
// new PublicReentrantReadWriteLock(fair); |
1270 |
// Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
1271 |
// Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
1272 |
// assertFalse(lock.hasQueuedThreads()); |
1273 |
// lock.writeLock().lock(); |
1274 |
// assertFalse(lock.hasQueuedThreads()); |
1275 |
// t1.start(); |
1276 |
// waitForQueuedThread(lock, t1); |
1277 |
// assertTrue(lock.hasQueuedThreads()); |
1278 |
// t2.start(); |
1279 |
// waitForQueuedThread(lock, t2); |
1280 |
// assertTrue(lock.hasQueuedThreads()); |
1281 |
// t1.interrupt(); |
1282 |
// awaitTermination(t1); |
1283 |
// assertTrue(lock.hasQueuedThreads()); |
1284 |
// lock.writeLock().unlock(); |
1285 |
// awaitTermination(t2); |
1286 |
// assertFalse(lock.hasQueuedThreads()); |
1287 |
// } |
1288 |
|
1289 |
// /** |
1290 |
// * hasQueuedThread(null) throws NPE |
1291 |
// */ |
1292 |
// public void testHasQueuedThreadNPE() { testHasQueuedThreadNPE(false); } |
1293 |
// public void testHasQueuedThreadNPE_fair() { testHasQueuedThreadNPE(true); } |
1294 |
// public void testHasQueuedThreadNPE(boolean fair) { |
1295 |
// final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair); |
1296 |
// try { |
1297 |
// lock.hasQueuedThread(null); |
1298 |
// shouldThrow(); |
1299 |
// } catch (NullPointerException success) {} |
1300 |
// } |
1301 |
|
1302 |
// /** |
1303 |
// * hasQueuedThread reports whether a thread is queued |
1304 |
// */ |
1305 |
// public void testHasQueuedThread() { testHasQueuedThread(false); } |
1306 |
// public void testHasQueuedThread_fair() { testHasQueuedThread(true); } |
1307 |
// public void testHasQueuedThread(boolean fair) { |
1308 |
// final PublicReentrantReadWriteLock lock = |
1309 |
// new PublicReentrantReadWriteLock(fair); |
1310 |
// Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
1311 |
// Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
1312 |
// assertFalse(lock.hasQueuedThread(t1)); |
1313 |
// assertFalse(lock.hasQueuedThread(t2)); |
1314 |
// lock.writeLock().lock(); |
1315 |
// t1.start(); |
1316 |
// waitForQueuedThread(lock, t1); |
1317 |
// assertTrue(lock.hasQueuedThread(t1)); |
1318 |
// assertFalse(lock.hasQueuedThread(t2)); |
1319 |
// t2.start(); |
1320 |
// waitForQueuedThread(lock, t2); |
1321 |
// assertTrue(lock.hasQueuedThread(t1)); |
1322 |
// assertTrue(lock.hasQueuedThread(t2)); |
1323 |
// t1.interrupt(); |
1324 |
// awaitTermination(t1); |
1325 |
// assertFalse(lock.hasQueuedThread(t1)); |
1326 |
// assertTrue(lock.hasQueuedThread(t2)); |
1327 |
// lock.writeLock().unlock(); |
1328 |
// awaitTermination(t2); |
1329 |
// assertFalse(lock.hasQueuedThread(t1)); |
1330 |
// assertFalse(lock.hasQueuedThread(t2)); |
1331 |
// } |
1332 |
|
1333 |
// /** |
1334 |
// * getQueueLength reports number of waiting threads |
1335 |
// */ |
1336 |
// public void testGetQueueLength() { testGetQueueLength(false); } |
1337 |
// public void testGetQueueLength_fair() { testGetQueueLength(true); } |
1338 |
// public void testGetQueueLength(boolean fair) { |
1339 |
// final PublicReentrantReadWriteLock lock = |
1340 |
// new PublicReentrantReadWriteLock(fair); |
1341 |
// Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
1342 |
// Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
1343 |
// assertEquals(0, lock.getQueueLength()); |
1344 |
// lock.writeLock().lock(); |
1345 |
// t1.start(); |
1346 |
// waitForQueuedThread(lock, t1); |
1347 |
// assertEquals(1, lock.getQueueLength()); |
1348 |
// t2.start(); |
1349 |
// waitForQueuedThread(lock, t2); |
1350 |
// assertEquals(2, lock.getQueueLength()); |
1351 |
// t1.interrupt(); |
1352 |
// awaitTermination(t1); |
1353 |
// assertEquals(1, lock.getQueueLength()); |
1354 |
// lock.writeLock().unlock(); |
1355 |
// awaitTermination(t2); |
1356 |
// assertEquals(0, lock.getQueueLength()); |
1357 |
// } |
1358 |
|
1359 |
// /** |
1360 |
// * getQueuedThreads includes waiting threads |
1361 |
// */ |
1362 |
// public void testGetQueuedThreads() { testGetQueuedThreads(false); } |
1363 |
// public void testGetQueuedThreads_fair() { testGetQueuedThreads(true); } |
1364 |
// public void testGetQueuedThreads(boolean fair) { |
1365 |
// final PublicReentrantReadWriteLock lock = |
1366 |
// new PublicReentrantReadWriteLock(fair); |
1367 |
// Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
1368 |
// Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
1369 |
// assertTrue(lock.getQueuedThreads().isEmpty()); |
1370 |
// lock.writeLock().lock(); |
1371 |
// assertTrue(lock.getQueuedThreads().isEmpty()); |
1372 |
// t1.start(); |
1373 |
// waitForQueuedThread(lock, t1); |
1374 |
// assertEquals(1, lock.getQueuedThreads().size()); |
1375 |
// assertTrue(lock.getQueuedThreads().contains(t1)); |
1376 |
// t2.start(); |
1377 |
// waitForQueuedThread(lock, t2); |
1378 |
// assertEquals(2, lock.getQueuedThreads().size()); |
1379 |
// assertTrue(lock.getQueuedThreads().contains(t1)); |
1380 |
// assertTrue(lock.getQueuedThreads().contains(t2)); |
1381 |
// t1.interrupt(); |
1382 |
// awaitTermination(t1); |
1383 |
// assertFalse(lock.getQueuedThreads().contains(t1)); |
1384 |
// assertTrue(lock.getQueuedThreads().contains(t2)); |
1385 |
// assertEquals(1, lock.getQueuedThreads().size()); |
1386 |
// lock.writeLock().unlock(); |
1387 |
// awaitTermination(t2); |
1388 |
// assertTrue(lock.getQueuedThreads().isEmpty()); |
1389 |
// } |
1390 |
|
1391 |
// /** |
1392 |
// * hasWaiters throws NPE if null |
1393 |
// */ |
1394 |
// public void testHasWaitersNPE() { testHasWaitersNPE(false); } |
1395 |
// public void testHasWaitersNPE_fair() { testHasWaitersNPE(true); } |
1396 |
// public void testHasWaitersNPE(boolean fair) { |
1397 |
// final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair); |
1398 |
// try { |
1399 |
// lock.hasWaiters(null); |
1400 |
// shouldThrow(); |
1401 |
// } catch (NullPointerException success) {} |
1402 |
// } |
1403 |
|
1404 |
// /** |
1405 |
// * getWaitQueueLength throws NPE if null |
1406 |
// */ |
1407 |
// public void testGetWaitQueueLengthNPE() { testGetWaitQueueLengthNPE(false); } |
1408 |
// public void testGetWaitQueueLengthNPE_fair() { testGetWaitQueueLengthNPE(true); } |
1409 |
// public void testGetWaitQueueLengthNPE(boolean fair) { |
1410 |
// final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair); |
1411 |
// try { |
1412 |
// lock.getWaitQueueLength(null); |
1413 |
// shouldThrow(); |
1414 |
// } catch (NullPointerException success) {} |
1415 |
// } |
1416 |
|
1417 |
// /** |
1418 |
// * getWaitingThreads throws NPE if null |
1419 |
// */ |
1420 |
// public void testGetWaitingThreadsNPE() { testGetWaitingThreadsNPE(false); } |
1421 |
// public void testGetWaitingThreadsNPE_fair() { testGetWaitingThreadsNPE(true); } |
1422 |
// public void testGetWaitingThreadsNPE(boolean fair) { |
1423 |
// final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock(fair); |
1424 |
// try { |
1425 |
// lock.getWaitingThreads(null); |
1426 |
// shouldThrow(); |
1427 |
// } catch (NullPointerException success) {} |
1428 |
// } |
1429 |
|
1430 |
// /** |
1431 |
// * hasWaiters throws IllegalArgumentException if not owned |
1432 |
// */ |
1433 |
// public void testHasWaitersIAE() { testHasWaitersIAE(false); } |
1434 |
// public void testHasWaitersIAE_fair() { testHasWaitersIAE(true); } |
1435 |
// public void testHasWaitersIAE(boolean fair) { |
1436 |
// final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair); |
1437 |
// final Condition c = lock.writeLock().newCondition(); |
1438 |
// final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock(fair); |
1439 |
// try { |
1440 |
// lock2.hasWaiters(c); |
1441 |
// shouldThrow(); |
1442 |
// } catch (IllegalArgumentException success) {} |
1443 |
// } |
1444 |
|
1445 |
// /** |
1446 |
// * hasWaiters throws IllegalMonitorStateException if not locked |
1447 |
// */ |
1448 |
// public void testHasWaitersIMSE() { testHasWaitersIMSE(false); } |
1449 |
// public void testHasWaitersIMSE_fair() { testHasWaitersIMSE(true); } |
1450 |
// public void testHasWaitersIMSE(boolean fair) { |
1451 |
// final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair); |
1452 |
// final Condition c = lock.writeLock().newCondition(); |
1453 |
// try { |
1454 |
// lock.hasWaiters(c); |
1455 |
// shouldThrow(); |
1456 |
// } catch (IllegalMonitorStateException success) {} |
1457 |
// } |
1458 |
|
1459 |
// /** |
1460 |
// * getWaitQueueLength throws IllegalArgumentException if not owned |
1461 |
// */ |
1462 |
// public void testGetWaitQueueLengthIAE() { testGetWaitQueueLengthIAE(false); } |
1463 |
// public void testGetWaitQueueLengthIAE_fair() { testGetWaitQueueLengthIAE(true); } |
1464 |
// public void testGetWaitQueueLengthIAE(boolean fair) { |
1465 |
// final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair); |
1466 |
// final Condition c = lock.writeLock().newCondition(); |
1467 |
// final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock(fair); |
1468 |
// try { |
1469 |
// lock2.getWaitQueueLength(c); |
1470 |
// shouldThrow(); |
1471 |
// } catch (IllegalArgumentException success) {} |
1472 |
// } |
1473 |
|
1474 |
// /** |
1475 |
// * getWaitQueueLength throws IllegalMonitorStateException if not locked |
1476 |
// */ |
1477 |
// public void testGetWaitQueueLengthIMSE() { testGetWaitQueueLengthIMSE(false); } |
1478 |
// public void testGetWaitQueueLengthIMSE_fair() { testGetWaitQueueLengthIMSE(true); } |
1479 |
// public void testGetWaitQueueLengthIMSE(boolean fair) { |
1480 |
// final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair); |
1481 |
// final Condition c = lock.writeLock().newCondition(); |
1482 |
// try { |
1483 |
// lock.getWaitQueueLength(c); |
1484 |
// shouldThrow(); |
1485 |
// } catch (IllegalMonitorStateException success) {} |
1486 |
// } |
1487 |
|
1488 |
// /** |
1489 |
// * getWaitingThreads throws IllegalArgumentException if not owned |
1490 |
// */ |
1491 |
// public void testGetWaitingThreadsIAE() { testGetWaitingThreadsIAE(false); } |
1492 |
// public void testGetWaitingThreadsIAE_fair() { testGetWaitingThreadsIAE(true); } |
1493 |
// public void testGetWaitingThreadsIAE(boolean fair) { |
1494 |
// final PublicReentrantReadWriteLock lock = |
1495 |
// new PublicReentrantReadWriteLock(fair); |
1496 |
// final Condition c = lock.writeLock().newCondition(); |
1497 |
// final PublicReentrantReadWriteLock lock2 = |
1498 |
// new PublicReentrantReadWriteLock(fair); |
1499 |
// try { |
1500 |
// lock2.getWaitingThreads(c); |
1501 |
// shouldThrow(); |
1502 |
// } catch (IllegalArgumentException success) {} |
1503 |
// } |
1504 |
|
1505 |
// /** |
1506 |
// * getWaitingThreads throws IllegalMonitorStateException if not locked |
1507 |
// */ |
1508 |
// public void testGetWaitingThreadsIMSE() { testGetWaitingThreadsIMSE(false); } |
1509 |
// public void testGetWaitingThreadsIMSE_fair() { testGetWaitingThreadsIMSE(true); } |
1510 |
// public void testGetWaitingThreadsIMSE(boolean fair) { |
1511 |
// final PublicReentrantReadWriteLock lock = |
1512 |
// new PublicReentrantReadWriteLock(fair); |
1513 |
// final Condition c = lock.writeLock().newCondition(); |
1514 |
// try { |
1515 |
// lock.getWaitingThreads(c); |
1516 |
// shouldThrow(); |
1517 |
// } catch (IllegalMonitorStateException success) {} |
1518 |
// } |
1519 |
|
1520 |
// /** |
1521 |
// * hasWaiters returns true when a thread is waiting, else false |
1522 |
// */ |
1523 |
// public void testHasWaiters() { testHasWaiters(false); } |
1524 |
// public void testHasWaiters_fair() { testHasWaiters(true); } |
1525 |
// public void testHasWaiters(boolean fair) { |
1526 |
// final PublicReentrantReadWriteLock lock = |
1527 |
// new PublicReentrantReadWriteLock(fair); |
1528 |
// final Condition c = lock.writeLock().newCondition(); |
1529 |
// final CountDownLatch locked = new CountDownLatch(1); |
1530 |
// Thread t = newStartedThread(new CheckedRunnable() { |
1531 |
// public void realRun() throws InterruptedException { |
1532 |
// lock.writeLock().lock(); |
1533 |
// assertHasNoWaiters(lock, c); |
1534 |
// assertFalse(lock.hasWaiters(c)); |
1535 |
// locked.countDown(); |
1536 |
// c.await(); |
1537 |
// assertHasNoWaiters(lock, c); |
1538 |
// assertFalse(lock.hasWaiters(c)); |
1539 |
// lock.writeLock().unlock(); |
1540 |
// }}); |
1541 |
|
1542 |
// await(locked); |
1543 |
// lock.writeLock().lock(); |
1544 |
// assertHasWaiters(lock, c, t); |
1545 |
// assertTrue(lock.hasWaiters(c)); |
1546 |
// c.signal(); |
1547 |
// assertHasNoWaiters(lock, c); |
1548 |
// assertFalse(lock.hasWaiters(c)); |
1549 |
// lock.writeLock().unlock(); |
1550 |
// awaitTermination(t); |
1551 |
// assertHasNoWaiters(lock, c); |
1552 |
// } |
1553 |
|
1554 |
// /** |
1555 |
// * getWaitQueueLength returns number of waiting threads |
1556 |
// */ |
1557 |
// public void testGetWaitQueueLength() { testGetWaitQueueLength(false); } |
1558 |
// public void testGetWaitQueueLength_fair() { testGetWaitQueueLength(true); } |
1559 |
// public void testGetWaitQueueLength(boolean fair) { |
1560 |
// final PublicReentrantReadWriteLock lock = |
1561 |
// new PublicReentrantReadWriteLock(fair); |
1562 |
// final Condition c = lock.writeLock().newCondition(); |
1563 |
// final CountDownLatch locked = new CountDownLatch(1); |
1564 |
// Thread t = newStartedThread(new CheckedRunnable() { |
1565 |
// public void realRun() throws InterruptedException { |
1566 |
// lock.writeLock().lock(); |
1567 |
// assertEquals(0, lock.getWaitQueueLength(c)); |
1568 |
// locked.countDown(); |
1569 |
// c.await(); |
1570 |
// lock.writeLock().unlock(); |
1571 |
// }}); |
1572 |
|
1573 |
// await(locked); |
1574 |
// lock.writeLock().lock(); |
1575 |
// assertHasWaiters(lock, c, t); |
1576 |
// assertEquals(1, lock.getWaitQueueLength(c)); |
1577 |
// c.signal(); |
1578 |
// assertHasNoWaiters(lock, c); |
1579 |
// assertEquals(0, lock.getWaitQueueLength(c)); |
1580 |
// lock.writeLock().unlock(); |
1581 |
// awaitTermination(t); |
1582 |
// } |
1583 |
|
1584 |
// /** |
1585 |
// * getWaitingThreads returns only and all waiting threads |
1586 |
// */ |
1587 |
// public void testGetWaitingThreads() { testGetWaitingThreads(false); } |
1588 |
// public void testGetWaitingThreads_fair() { testGetWaitingThreads(true); } |
1589 |
// public void testGetWaitingThreads(boolean fair) { |
1590 |
// final PublicReentrantReadWriteLock lock = |
1591 |
// new PublicReentrantReadWriteLock(fair); |
1592 |
// final Condition c = lock.writeLock().newCondition(); |
1593 |
// final CountDownLatch locked1 = new CountDownLatch(1); |
1594 |
// final CountDownLatch locked2 = new CountDownLatch(1); |
1595 |
// Thread t1 = new Thread(new CheckedRunnable() { |
1596 |
// public void realRun() throws InterruptedException { |
1597 |
// lock.writeLock().lock(); |
1598 |
// assertTrue(lock.getWaitingThreads(c).isEmpty()); |
1599 |
// locked1.countDown(); |
1600 |
// c.await(); |
1601 |
// lock.writeLock().unlock(); |
1602 |
// }}); |
1603 |
|
1604 |
// Thread t2 = new Thread(new CheckedRunnable() { |
1605 |
// public void realRun() throws InterruptedException { |
1606 |
// lock.writeLock().lock(); |
1607 |
// assertFalse(lock.getWaitingThreads(c).isEmpty()); |
1608 |
// locked2.countDown(); |
1609 |
// c.await(); |
1610 |
// lock.writeLock().unlock(); |
1611 |
// }}); |
1612 |
|
1613 |
// lock.writeLock().lock(); |
1614 |
// assertTrue(lock.getWaitingThreads(c).isEmpty()); |
1615 |
// lock.writeLock().unlock(); |
1616 |
|
1617 |
// t1.start(); |
1618 |
// await(locked1); |
1619 |
// t2.start(); |
1620 |
// await(locked2); |
1621 |
|
1622 |
// lock.writeLock().lock(); |
1623 |
// assertTrue(lock.hasWaiters(c)); |
1624 |
// assertTrue(lock.getWaitingThreads(c).contains(t1)); |
1625 |
// assertTrue(lock.getWaitingThreads(c).contains(t2)); |
1626 |
// assertEquals(2, lock.getWaitingThreads(c).size()); |
1627 |
// c.signalAll(); |
1628 |
// assertHasNoWaiters(lock, c); |
1629 |
// lock.writeLock().unlock(); |
1630 |
|
1631 |
// awaitTermination(t1); |
1632 |
// awaitTermination(t2); |
1633 |
|
1634 |
// assertHasNoWaiters(lock, c); |
1635 |
// } |
1636 |
|
1637 |
// /** |
1638 |
// * toString indicates current lock state |
1639 |
// */ |
1640 |
// public void testToString() { testToString(false); } |
1641 |
// public void testToString_fair() { testToString(true); } |
1642 |
// public void testToString(boolean fair) { |
1643 |
// ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair); |
1644 |
// assertTrue(lock.toString().contains("Write locks = 0")); |
1645 |
// assertTrue(lock.toString().contains("Read locks = 0")); |
1646 |
// lock.writeLock().lock(); |
1647 |
// assertTrue(lock.toString().contains("Write locks = 1")); |
1648 |
// assertTrue(lock.toString().contains("Read locks = 0")); |
1649 |
// lock.writeLock().unlock(); |
1650 |
// lock.readLock().lock(); |
1651 |
// lock.readLock().lock(); |
1652 |
// assertTrue(lock.toString().contains("Write locks = 0")); |
1653 |
// assertTrue(lock.toString().contains("Read locks = 2")); |
1654 |
// } |
1655 |
|
1656 |
// /** |
1657 |
// * readLock.toString indicates current lock state |
1658 |
// */ |
1659 |
// public void testReadLockToString() { testReadLockToString(false); } |
1660 |
// public void testReadLockToString_fair() { testReadLockToString(true); } |
1661 |
// public void testReadLockToString(boolean fair) { |
1662 |
// ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair); |
1663 |
// assertTrue(lock.readLock().toString().contains("Read locks = 0")); |
1664 |
// lock.readLock().lock(); |
1665 |
// lock.readLock().lock(); |
1666 |
// assertTrue(lock.readLock().toString().contains("Read locks = 2")); |
1667 |
// } |
1668 |
|
1669 |
// /** |
1670 |
// * writeLock.toString indicates current lock state |
1671 |
// */ |
1672 |
// public void testWriteLockToString() { testWriteLockToString(false); } |
1673 |
// public void testWriteLockToString_fair() { testWriteLockToString(true); } |
1674 |
// public void testWriteLockToString(boolean fair) { |
1675 |
// ReentrantReadWriteLock lock = new ReentrantReadWriteLock(fair); |
1676 |
// assertTrue(lock.writeLock().toString().contains("Unlocked")); |
1677 |
// lock.writeLock().lock(); |
1678 |
// assertTrue(lock.writeLock().toString().contains("Locked")); |
1679 |
// lock.writeLock().unlock(); |
1680 |
// assertTrue(lock.writeLock().toString().contains("Unlocked")); |
1681 |
// } |
1682 |
|
1683 |
} |