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/* |
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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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* 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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public class AbstractQueuedSynchronizerTest extends JSR166TestCase { |
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public static void main(String[] args) { |
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junit.textui.TestRunner.run (suite()); |
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junit.textui.TestRunner.run(suite()); |
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} |
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public static Test suite() { |
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return new TestSuite(AbstractQueuedSynchronizerTest.class); |
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public boolean isHeldExclusively() { return getState() == 1; } |
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public boolean tryAcquire(int acquires) { |
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assertTrue(acquires == 1); |
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assertEquals(1, acquires); |
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return compareAndSetState(0, 1); |
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} |
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return true; |
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} |
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public AbstractQueuedSynchronizer.ConditionObject newCondition() { return new AbstractQueuedSynchronizer.ConditionObject(); } |
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public AbstractQueuedSynchronizer.ConditionObject newCondition() { |
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return new AbstractQueuedSynchronizer.ConditionObject(); |
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} |
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} |
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public boolean isSignalled() { return getState() != 0; } |
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public int tryAcquireShared(int ignore) { |
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return isSignalled()? 1 : -1; |
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return isSignalled() ? 1 : -1; |
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} |
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public boolean tryReleaseShared(int ignore) { |
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sync.acquire(1); |
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Thread t = new Thread(new CheckedRunnable() { |
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public void realRun() { |
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threadAssertFalse(sync.tryAcquire(1)); |
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assertFalse(sync.tryAcquire(1)); |
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}}); |
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t.start(); |
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} |
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/** |
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* Timed await without a signal times out |
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* Timed await without a signal times out |
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*/ |
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public void testAwait_Timeout() throws InterruptedException { |
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final Mutex sync = new Mutex(); |
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Thread t = new Thread(new CheckedRunnable() { |
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public void realRun() throws InterruptedException { |
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sync.acquire(1); |
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threadAssertFalse(sync.hasWaiters(c)); |
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threadAssertEquals(0, sync.getWaitQueueLength(c)); |
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assertFalse(sync.hasWaiters(c)); |
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assertEquals(0, sync.getWaitQueueLength(c)); |
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c.await(); |
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sync.release(1); |
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}}); |
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Thread t1 = new Thread(new CheckedRunnable() { |
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public void realRun() throws InterruptedException { |
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sync.acquire(1); |
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threadAssertFalse(sync.hasWaiters(c)); |
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threadAssertEquals(0, sync.getWaitQueueLength(c)); |
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assertFalse(sync.hasWaiters(c)); |
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assertEquals(0, sync.getWaitQueueLength(c)); |
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c.await(); |
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sync.release(1); |
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}}); |
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Thread t2 = new Thread(new CheckedRunnable() { |
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public void realRun() throws InterruptedException { |
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sync.acquire(1); |
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threadAssertTrue(sync.hasWaiters(c)); |
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threadAssertEquals(1, sync.getWaitQueueLength(c)); |
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assertTrue(sync.hasWaiters(c)); |
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assertEquals(1, sync.getWaitQueueLength(c)); |
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c.await(); |
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sync.release(1); |
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}}); |
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Thread t1 = new Thread(new CheckedRunnable() { |
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public void realRun() throws InterruptedException { |
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sync.acquire(1); |
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threadAssertTrue(sync.getWaitingThreads(c).isEmpty()); |
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assertTrue(sync.getWaitingThreads(c).isEmpty()); |
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c.await(); |
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sync.release(1); |
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}}); |
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Thread t2 = new Thread(new CheckedRunnable() { |
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public void realRun() throws InterruptedException { |
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sync.acquire(1); |
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threadAssertFalse(sync.getWaitingThreads(c).isEmpty()); |
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assertFalse(sync.getWaitingThreads(c).isEmpty()); |
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c.await(); |
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sync.release(1); |
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}}); |
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Thread t = new Thread(new CheckedRunnable() { |
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public void realRun() throws InterruptedException { |
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threadAssertFalse(l.isSignalled()); |
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assertFalse(l.isSignalled()); |
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l.acquireSharedInterruptibly(0); |
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threadAssertTrue(l.isSignalled()); |
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assertTrue(l.isSignalled()); |
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}}); |
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t.start(); |
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/** |
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* acquireSharedTimed returns after release |
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*/ |
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public void testAsquireSharedTimed() throws InterruptedException { |
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public void testAcquireSharedTimed() throws InterruptedException { |
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final BooleanLatch l = new BooleanLatch(); |
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Thread t = new Thread(new CheckedRunnable() { |
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final BooleanLatch l = new BooleanLatch(); |
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Thread t = new Thread(new CheckedInterruptedRunnable() { |
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public void realRun() throws InterruptedException { |
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threadAssertFalse(l.isSignalled()); |
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assertFalse(l.isSignalled()); |
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l.acquireSharedInterruptibly(0); |
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}}); |
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