--- jsr166/src/test/tck/AbstractQueuedSynchronizerTest.java 2004/01/09 14:45:58 1.12 +++ jsr166/src/test/tck/AbstractQueuedSynchronizerTest.java 2004/01/11 16:02:33 1.16 @@ -30,26 +30,23 @@ public class AbstractQueuedSynchronizerT * ReentrantReadWriteLock, and Semaphore */ static class Mutex extends AbstractQueuedSynchronizer { - public boolean isLocked() { return getState() == 1; } + public boolean isHeldExclusively() { return getState() == 1; } - public boolean tryAcquireExclusive(int acquires) { + public boolean tryAcquire(int acquires) { assertTrue(acquires == 1); return compareAndSetState(0, 1); } - public boolean tryReleaseExclusive(int releases) { + public boolean tryRelease(int releases) { + if (getState() == 0) throw new IllegalMonitorStateException(); setState(0); return true; } - public void checkConditionAccess(Thread thread) { - if (getState() == 0) throw new IllegalMonitorStateException(); - } - - public ConditionObject newCondition() { return new ConditionObject(); } + public AbstractQueuedSynchronizer.ConditionObject newCondition() { return new AbstractQueuedSynchronizer.ConditionObject(); } public void lock() { - acquireExclusiveUninterruptibly(1); + acquire(1); } } @@ -72,21 +69,21 @@ public class AbstractQueuedSynchronizerT } /** - * A runnable calling acquireExclusiveInterruptibly + * A runnable calling acquireInterruptibly */ class InterruptibleLockRunnable implements Runnable { final Mutex lock; InterruptibleLockRunnable(Mutex l) { lock = l; } public void run() { try { - lock.acquireExclusiveInterruptibly(1); + lock.acquireInterruptibly(1); } catch(InterruptedException success){} } } /** - * A runnable calling acquireExclusiveInterruptibly that expects to be + * A runnable calling acquireInterruptibly that expects to be * interrupted */ class InterruptedLockRunnable implements Runnable { @@ -94,30 +91,38 @@ public class AbstractQueuedSynchronizerT InterruptedLockRunnable(Mutex l) { lock = l; } public void run() { try { - lock.acquireExclusiveInterruptibly(1); + lock.acquireInterruptibly(1); threadShouldThrow(); } catch(InterruptedException success){} } } + + /** + * isHeldExclusively is false upon construction + */ + public void testIsHeldExclusively() { + Mutex rl = new Mutex(); + assertFalse(rl.isHeldExclusively()); + } /** - * acquireExclusiveUninterruptiblying an releaseExclusiveed lock succeeds + * acquiring released lock succeeds */ - public void testAcquireExclusiveUninterruptibly() { + public void testAcquire() { Mutex rl = new Mutex(); - rl.acquireExclusiveUninterruptibly(1); - assertTrue(rl.isLocked()); - rl.releaseExclusive(1); + rl.acquire(1); + assertTrue(rl.isHeldExclusively()); + rl.release(1); } /** - * tryAcquireExclusive on an releaseExclusiveed lock succeeds + * tryAcquire on an released lock succeeds */ - public void testTryAcquireExclusive() { + public void testTryAcquire() { Mutex rl = new Mutex(); - assertTrue(rl.tryAcquireExclusive(1)); - assertTrue(rl.isLocked()); - rl.releaseExclusive(1); + assertTrue(rl.tryAcquire(1)); + assertTrue(rl.isHeldExclusively()); + rl.release(1); } /** @@ -129,7 +134,7 @@ public class AbstractQueuedSynchronizerT Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); try { assertFalse(lock.hasQueuedThreads()); - lock.acquireExclusiveUninterruptibly(1); + lock.acquire(1); t1.start(); Thread.sleep(SHORT_DELAY_MS); assertTrue(lock.hasQueuedThreads()); @@ -139,7 +144,7 @@ public class AbstractQueuedSynchronizerT t1.interrupt(); Thread.sleep(SHORT_DELAY_MS); assertTrue(lock.hasQueuedThreads()); - lock.releaseExclusive(1); + lock.release(1); Thread.sleep(SHORT_DELAY_MS); assertFalse(lock.hasQueuedThreads()); t1.join(); @@ -171,7 +176,7 @@ public class AbstractQueuedSynchronizerT try { assertFalse(lock.isQueued(t1)); assertFalse(lock.isQueued(t2)); - lock.acquireExclusiveUninterruptibly(1); + lock.acquire(1); t1.start(); Thread.sleep(SHORT_DELAY_MS); assertTrue(lock.isQueued(t1)); @@ -183,7 +188,7 @@ public class AbstractQueuedSynchronizerT Thread.sleep(SHORT_DELAY_MS); assertFalse(lock.isQueued(t1)); assertTrue(lock.isQueued(t2)); - lock.releaseExclusive(1); + lock.release(1); Thread.sleep(SHORT_DELAY_MS); assertFalse(lock.isQueued(t1)); assertFalse(lock.isQueued(t2)); @@ -203,7 +208,7 @@ public class AbstractQueuedSynchronizerT Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); try { assertNull(lock.getFirstQueuedThread()); - lock.acquireExclusiveUninterruptibly(1); + lock.acquire(1); t1.start(); Thread.sleep(SHORT_DELAY_MS); assertEquals(t1, lock.getFirstQueuedThread()); @@ -213,7 +218,7 @@ public class AbstractQueuedSynchronizerT t1.interrupt(); Thread.sleep(SHORT_DELAY_MS); assertEquals(t2, lock.getFirstQueuedThread()); - lock.releaseExclusive(1); + lock.release(1); Thread.sleep(SHORT_DELAY_MS); assertNull(lock.getFirstQueuedThread()); t1.join(); @@ -233,7 +238,7 @@ public class AbstractQueuedSynchronizerT Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); try { assertFalse(lock.hasContended()); - lock.acquireExclusiveUninterruptibly(1); + lock.acquire(1); t1.start(); Thread.sleep(SHORT_DELAY_MS); assertTrue(lock.hasContended()); @@ -243,7 +248,7 @@ public class AbstractQueuedSynchronizerT t1.interrupt(); Thread.sleep(SHORT_DELAY_MS); assertTrue(lock.hasContended()); - lock.releaseExclusive(1); + lock.release(1); Thread.sleep(SHORT_DELAY_MS); assertTrue(lock.hasContended()); t1.join(); @@ -254,15 +259,15 @@ public class AbstractQueuedSynchronizerT } /** - * timed tryAcquireExclusive is interruptible. + * tryAcquireNanos is interruptible. */ public void testInterruptedException2() { final Mutex lock = new Mutex(); - lock.acquireExclusiveUninterruptibly(1); + lock.acquire(1); Thread t = new Thread(new Runnable() { public void run() { try { - lock.acquireExclusiveNanos(1, MEDIUM_DELAY_MS * 1000 * 1000); + lock.tryAcquireNanos(1, MEDIUM_DELAY_MS * 1000 * 1000); threadShouldThrow(); } catch(InterruptedException success){} } @@ -277,35 +282,35 @@ public class AbstractQueuedSynchronizerT /** - * TryAcquireExclusive on a locked lock fails + * TryAcquire on a locked lock fails */ - public void testTryAcquireExclusiveWhenLocked() { + public void testTryAcquireWhenLocked() { final Mutex lock = new Mutex(); - lock.acquireExclusiveUninterruptibly(1); + lock.acquire(1); Thread t = new Thread(new Runnable() { public void run() { - threadAssertFalse(lock.tryAcquireExclusive(1)); + threadAssertFalse(lock.tryAcquire(1)); } }); try { t.start(); t.join(); - lock.releaseExclusive(1); + lock.release(1); } catch(Exception e){ unexpectedException(); } } /** - * acquireExclusiveTimed on a locked lock times out + * tryAcquireNanos on a locked lock times out */ - public void testacquireExclusiveTimed_Timeout() { + public void testAcquireNanos_Timeout() { final Mutex lock = new Mutex(); - lock.acquireExclusiveUninterruptibly(1); + lock.acquire(1); Thread t = new Thread(new Runnable() { public void run() { try { - threadAssertFalse(lock.acquireExclusiveNanos(1, 1000 * 1000)); + threadAssertFalse(lock.tryAcquireNanos(1, 1000 * 1000)); } catch (Exception ex) { threadUnexpectedException(); } @@ -314,7 +319,7 @@ public class AbstractQueuedSynchronizerT try { t.start(); t.join(); - lock.releaseExclusive(1); + lock.release(1); } catch(Exception e){ unexpectedException(); } @@ -322,32 +327,32 @@ public class AbstractQueuedSynchronizerT /** - * isLocked is true when locked and false when not + * getState is true when acquired and false when not */ - public void testIsLocked() { + public void testGetState() { final Mutex lock = new Mutex(); - lock.acquireExclusiveUninterruptibly(1); - assertTrue(lock.isLocked()); - lock.releaseExclusive(1); - assertFalse(lock.isLocked()); + lock.acquire(1); + assertTrue(lock.isHeldExclusively()); + lock.release(1); + assertFalse(lock.isHeldExclusively()); Thread t = new Thread(new Runnable() { public void run() { - lock.acquireExclusiveUninterruptibly(1); + lock.acquire(1); try { Thread.sleep(SMALL_DELAY_MS); } catch(Exception e) { threadUnexpectedException(); } - lock.releaseExclusive(1); + lock.release(1); } }); try { t.start(); Thread.sleep(SHORT_DELAY_MS); - assertTrue(lock.isLocked()); + assertTrue(lock.isHeldExclusively()); t.join(); - assertFalse(lock.isLocked()); + assertFalse(lock.isHeldExclusively()); } catch(Exception e){ unexpectedException(); } @@ -355,16 +360,16 @@ public class AbstractQueuedSynchronizerT /** - * acquireExclusiveInterruptibly is interruptible. + * acquireInterruptibly is interruptible. */ public void testAcquireInterruptibly1() { final Mutex lock = new Mutex(); - lock.acquireExclusiveUninterruptibly(1); + lock.acquire(1); Thread t = new Thread(new InterruptedLockRunnable(lock)); try { t.start(); t.interrupt(); - lock.releaseExclusive(1); + lock.release(1); t.join(); } catch(Exception e){ unexpectedException(); @@ -372,12 +377,12 @@ public class AbstractQueuedSynchronizerT } /** - * acquireExclusiveInterruptibly succeeds when released, else is interruptible + * acquireInterruptibly succeeds when released, else is interruptible */ public void testAcquireInterruptibly2() { final Mutex lock = new Mutex(); try { - lock.acquireExclusiveInterruptibly(1); + lock.acquireInterruptibly(1); } catch(Exception e) { unexpectedException(); } @@ -385,7 +390,7 @@ public class AbstractQueuedSynchronizerT try { t.start(); t.interrupt(); - assertTrue(lock.isLocked()); + assertTrue(lock.isHeldExclusively()); t.join(); } catch(Exception e){ unexpectedException(); @@ -408,7 +413,7 @@ public class AbstractQueuedSynchronizerT */ public void testAwait_IllegalMonitor() { final Mutex lock = new Mutex(); - final Condition c = lock.newCondition(); + final AbstractQueuedSynchronizer.ConditionObject c = lock.newCondition(); try { c.await(); shouldThrow(); @@ -425,7 +430,7 @@ public class AbstractQueuedSynchronizerT */ public void testSignal_IllegalMonitor() { final Mutex lock = new Mutex(); - final Condition c = lock.newCondition(); + final AbstractQueuedSynchronizer.ConditionObject c = lock.newCondition(); try { c.signal(); shouldThrow(); @@ -442,12 +447,12 @@ public class AbstractQueuedSynchronizerT */ public void testAwaitNanos_Timeout() { final Mutex lock = new Mutex(); - final Condition c = lock.newCondition(); + final AbstractQueuedSynchronizer.ConditionObject c = lock.newCondition(); try { - lock.acquireExclusiveUninterruptibly(1); + lock.acquire(1); long t = c.awaitNanos(100); assertTrue(t <= 0); - lock.releaseExclusive(1); + lock.release(1); } catch (Exception ex) { unexpectedException(); @@ -459,11 +464,11 @@ public class AbstractQueuedSynchronizerT */ public void testAwait_Timeout() { final Mutex lock = new Mutex(); - final Condition c = lock.newCondition(); + final AbstractQueuedSynchronizer.ConditionObject c = lock.newCondition(); try { - lock.acquireExclusiveUninterruptibly(1); + lock.acquire(1); assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); - lock.releaseExclusive(1); + lock.release(1); } catch (Exception ex) { unexpectedException(); @@ -475,12 +480,12 @@ public class AbstractQueuedSynchronizerT */ public void testAwaitUntil_Timeout() { final Mutex lock = new Mutex(); - final Condition c = lock.newCondition(); + final AbstractQueuedSynchronizer.ConditionObject c = lock.newCondition(); try { - lock.acquireExclusiveUninterruptibly(1); + lock.acquire(1); java.util.Date d = new java.util.Date(); assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10))); - lock.releaseExclusive(1); + lock.release(1); } catch (Exception ex) { unexpectedException(); @@ -492,13 +497,307 @@ public class AbstractQueuedSynchronizerT */ public void testAwait() { final Mutex lock = new Mutex(); - final Condition c = lock.newCondition(); + final AbstractQueuedSynchronizer.ConditionObject c = lock.newCondition(); Thread t = new Thread(new Runnable() { public void run() { try { - lock.acquireExclusiveUninterruptibly(1); + lock.acquire(1); + c.await(); + lock.release(1); + } + catch(InterruptedException e) { + threadUnexpectedException(); + } + } + }); + + try { + t.start(); + Thread.sleep(SHORT_DELAY_MS); + lock.acquire(1); + c.signal(); + lock.release(1); + t.join(SHORT_DELAY_MS); + assertFalse(t.isAlive()); + } + catch (Exception ex) { + unexpectedException(); + } + } + + + + /** + * hasWaiters throws NPE if null + */ + public void testHasWaitersNPE() { + final Mutex lock = new Mutex(); + try { + lock.hasWaiters(null); + shouldThrow(); + } catch (NullPointerException success) { + } catch (Exception ex) { + unexpectedException(); + } + } + + /** + * getWaitQueueLength throws NPE if null + */ + public void testGetWaitQueueLengthNPE() { + final Mutex lock = new Mutex(); + try { + lock.getWaitQueueLength(null); + shouldThrow(); + } catch (NullPointerException success) { + } catch (Exception ex) { + unexpectedException(); + } + } + + + /** + * getWaitingThreads throws NPE if null + */ + public void testGetWaitingThreadsNPE() { + final Mutex lock = new Mutex(); + try { + lock.getWaitingThreads(null); + shouldThrow(); + } catch (NullPointerException success) { + } catch (Exception ex) { + unexpectedException(); + } + } + + + /** + * hasWaiters throws IAE if not owned + */ + public void testHasWaitersIAE() { + final Mutex lock = new Mutex(); + final AbstractQueuedSynchronizer.ConditionObject c = (lock.newCondition()); + final Mutex lock2 = new Mutex(); + try { + lock2.hasWaiters(c); + shouldThrow(); + } catch (IllegalArgumentException success) { + } catch (Exception ex) { + unexpectedException(); + } + } + + /** + * hasWaiters throws IMSE if not locked + */ + public void testHasWaitersIMSE() { + final Mutex lock = new Mutex(); + final AbstractQueuedSynchronizer.ConditionObject c = (lock.newCondition()); + try { + lock.hasWaiters(c); + shouldThrow(); + } catch (IllegalMonitorStateException success) { + } catch (Exception ex) { + unexpectedException(); + } + } + + + /** + * getWaitQueueLength throws IAE if not owned + */ + public void testGetWaitQueueLengthIAE() { + final Mutex lock = new Mutex(); + final AbstractQueuedSynchronizer.ConditionObject c = (lock.newCondition()); + final Mutex lock2 = new Mutex(); + try { + lock2.getWaitQueueLength(c); + shouldThrow(); + } catch (IllegalArgumentException success) { + } catch (Exception ex) { + unexpectedException(); + } + } + + /** + * getWaitQueueLength throws IMSE if not locked + */ + public void testGetWaitQueueLengthIMSE() { + final Mutex lock = new Mutex(); + final AbstractQueuedSynchronizer.ConditionObject c = (lock.newCondition()); + try { + lock.getWaitQueueLength(c); + shouldThrow(); + } catch (IllegalMonitorStateException success) { + } catch (Exception ex) { + unexpectedException(); + } + } + + + /** + * getWaitingThreads throws IAE if not owned + */ + public void testGetWaitingThreadsIAE() { + final Mutex lock = new Mutex(); + final AbstractQueuedSynchronizer.ConditionObject c = (lock.newCondition()); + final Mutex lock2 = new Mutex(); + try { + lock2.getWaitingThreads(c); + shouldThrow(); + } catch (IllegalArgumentException success) { + } catch (Exception ex) { + unexpectedException(); + } + } + + /** + * getWaitingThreads throws IMSE if not locked + */ + public void testGetWaitingThreadsIMSE() { + final Mutex lock = new Mutex(); + final AbstractQueuedSynchronizer.ConditionObject c = (lock.newCondition()); + try { + lock.getWaitingThreads(c); + shouldThrow(); + } catch (IllegalMonitorStateException success) { + } catch (Exception ex) { + unexpectedException(); + } + } + + + + /** + * hasWaiters returns true when a thread is waiting, else false + */ + public void testHasWaiters() { + final Mutex lock = new Mutex(); + final AbstractQueuedSynchronizer.ConditionObject c = lock.newCondition(); + Thread t = new Thread(new Runnable() { + public void run() { + try { + lock.acquire(1); + threadAssertFalse(lock.hasWaiters(c)); + threadAssertEquals(0, lock.getWaitQueueLength(c)); + c.await(); + lock.release(1); + } + catch(InterruptedException e) { + threadUnexpectedException(); + } + } + }); + + try { + t.start(); + Thread.sleep(SHORT_DELAY_MS); + lock.acquire(1); + assertTrue(lock.hasWaiters(c)); + assertEquals(1, lock.getWaitQueueLength(c)); + c.signal(); + lock.release(1); + Thread.sleep(SHORT_DELAY_MS); + lock.acquire(1); + assertFalse(lock.hasWaiters(c)); + assertEquals(0, lock.getWaitQueueLength(c)); + lock.release(1); + t.join(SHORT_DELAY_MS); + assertFalse(t.isAlive()); + } + catch (Exception ex) { + unexpectedException(); + } + } + + /** + * getWaitQueueLength returns number of waiting threads + */ + public void testGetWaitQueueLength() { + final Mutex lock = new Mutex(); + final AbstractQueuedSynchronizer.ConditionObject c = lock.newCondition(); + Thread t1 = new Thread(new Runnable() { + public void run() { + try { + lock.acquire(1); + threadAssertFalse(lock.hasWaiters(c)); + threadAssertEquals(0, lock.getWaitQueueLength(c)); + c.await(); + lock.release(1); + } + catch(InterruptedException e) { + threadUnexpectedException(); + } + } + }); + + Thread t2 = new Thread(new Runnable() { + public void run() { + try { + lock.acquire(1); + threadAssertTrue(lock.hasWaiters(c)); + threadAssertEquals(1, lock.getWaitQueueLength(c)); + c.await(); + lock.release(1); + } + catch(InterruptedException e) { + threadUnexpectedException(); + } + } + }); + + try { + t1.start(); + Thread.sleep(SHORT_DELAY_MS); + t2.start(); + Thread.sleep(SHORT_DELAY_MS); + lock.acquire(1); + assertTrue(lock.hasWaiters(c)); + assertEquals(2, lock.getWaitQueueLength(c)); + c.signalAll(); + lock.release(1); + Thread.sleep(SHORT_DELAY_MS); + lock.acquire(1); + assertFalse(lock.hasWaiters(c)); + assertEquals(0, lock.getWaitQueueLength(c)); + lock.release(1); + t1.join(SHORT_DELAY_MS); + t2.join(SHORT_DELAY_MS); + assertFalse(t1.isAlive()); + assertFalse(t2.isAlive()); + } + catch (Exception ex) { + unexpectedException(); + } + } + + /** + * getWaitingThreads returns only and all waiting threads + */ + public void testGetWaitingThreads() { + final Mutex lock = new Mutex(); + final AbstractQueuedSynchronizer.ConditionObject c = lock.newCondition(); + Thread t1 = new Thread(new Runnable() { + public void run() { + try { + lock.acquire(1); + threadAssertTrue(lock.getWaitingThreads(c).isEmpty()); c.await(); - lock.releaseExclusive(1); + lock.release(1); + } + catch(InterruptedException e) { + threadUnexpectedException(); + } + } + }); + + Thread t2 = new Thread(new Runnable() { + public void run() { + try { + lock.acquire(1); + threadAssertFalse(lock.getWaitingThreads(c).isEmpty()); + c.await(); + lock.release(1); } catch(InterruptedException e) { threadUnexpectedException(); @@ -507,11 +806,58 @@ public class AbstractQueuedSynchronizerT }); try { + lock.acquire(1); + assertTrue(lock.getWaitingThreads(c).isEmpty()); + lock.release(1); + t1.start(); + Thread.sleep(SHORT_DELAY_MS); + t2.start(); + Thread.sleep(SHORT_DELAY_MS); + lock.acquire(1); + assertTrue(lock.hasWaiters(c)); + assertTrue(lock.getWaitingThreads(c).contains(t1)); + assertTrue(lock.getWaitingThreads(c).contains(t2)); + c.signalAll(); + lock.release(1); + Thread.sleep(SHORT_DELAY_MS); + lock.acquire(1); + assertFalse(lock.hasWaiters(c)); + assertTrue(lock.getWaitingThreads(c).isEmpty()); + lock.release(1); + t1.join(SHORT_DELAY_MS); + t2.join(SHORT_DELAY_MS); + assertFalse(t1.isAlive()); + assertFalse(t2.isAlive()); + } + catch (Exception ex) { + unexpectedException(); + } + } + + + + /** + * awaitUninterruptibly doesn't abort on interrupt + */ + public void testAwaitUninterruptibly() { + final Mutex lock = new Mutex(); + final AbstractQueuedSynchronizer.ConditionObject c = lock.newCondition(); + Thread t = new Thread(new Runnable() { + public void run() { + lock.acquire(1); + c.awaitUninterruptibly(); + lock.release(1); + } + }); + + try { t.start(); Thread.sleep(SHORT_DELAY_MS); - lock.acquireExclusiveUninterruptibly(1); + t.interrupt(); + lock.acquire(1); c.signal(); - lock.releaseExclusive(1); + lock.release(1); + assert(t.isInterrupted()); t.join(SHORT_DELAY_MS); assertFalse(t.isAlive()); } @@ -520,11 +866,191 @@ public class AbstractQueuedSynchronizerT } } + /** + * await is interruptible + */ + public void testAwait_Interrupt() { + final Mutex lock = new Mutex(); + final AbstractQueuedSynchronizer.ConditionObject c = lock.newCondition(); + Thread t = new Thread(new Runnable() { + public void run() { + try { + lock.acquire(1); + c.await(); + lock.release(1); + threadShouldThrow(); + } + catch(InterruptedException success) { + } + } + }); + + try { + t.start(); + Thread.sleep(SHORT_DELAY_MS); + t.interrupt(); + t.join(SHORT_DELAY_MS); + assertFalse(t.isAlive()); + } + catch (Exception ex) { + unexpectedException(); + } + } /** - * Latch isSignalled initially returns false, then true after release + * awaitNanos is interruptible */ - public void testLatchIsSignalled() { + public void testAwaitNanos_Interrupt() { + final Mutex lock = new Mutex(); + final AbstractQueuedSynchronizer.ConditionObject c = lock.newCondition(); + Thread t = new Thread(new Runnable() { + public void run() { + try { + lock.acquire(1); + c.awaitNanos(1000 * 1000 * 1000); // 1 sec + lock.release(1); + threadShouldThrow(); + } + catch(InterruptedException success) { + } + } + }); + + try { + t.start(); + Thread.sleep(SHORT_DELAY_MS); + t.interrupt(); + t.join(SHORT_DELAY_MS); + assertFalse(t.isAlive()); + } + catch (Exception ex) { + unexpectedException(); + } + } + + /** + * awaitUntil is interruptible + */ + public void testAwaitUntil_Interrupt() { + final Mutex lock = new Mutex(); + final AbstractQueuedSynchronizer.ConditionObject c = lock.newCondition(); + Thread t = new Thread(new Runnable() { + public void run() { + try { + lock.acquire(1); + java.util.Date d = new java.util.Date(); + c.awaitUntil(new java.util.Date(d.getTime() + 10000)); + lock.release(1); + threadShouldThrow(); + } + catch(InterruptedException success) { + } + } + }); + + try { + t.start(); + Thread.sleep(SHORT_DELAY_MS); + t.interrupt(); + t.join(SHORT_DELAY_MS); + assertFalse(t.isAlive()); + } + catch (Exception ex) { + unexpectedException(); + } + } + + /** + * signalAll wakes up all threads + */ + public void testSignalAll() { + final Mutex lock = new Mutex(); + final AbstractQueuedSynchronizer.ConditionObject c = lock.newCondition(); + Thread t1 = new Thread(new Runnable() { + public void run() { + try { + lock.acquire(1); + c.await(); + lock.release(1); + } + catch(InterruptedException e) { + threadUnexpectedException(); + } + } + }); + + Thread t2 = new Thread(new Runnable() { + public void run() { + try { + lock.acquire(1); + c.await(); + lock.release(1); + } + catch(InterruptedException e) { + threadUnexpectedException(); + } + } + }); + + try { + t1.start(); + t2.start(); + Thread.sleep(SHORT_DELAY_MS); + lock.acquire(1); + c.signalAll(); + lock.release(1); + t1.join(SHORT_DELAY_MS); + t2.join(SHORT_DELAY_MS); + assertFalse(t1.isAlive()); + assertFalse(t2.isAlive()); + } + catch (Exception ex) { + unexpectedException(); + } + } + + + /** + * toString indicates current state + */ + public void testToString() { + Mutex lock = new Mutex(); + String us = lock.toString(); + assertTrue(us.indexOf("State = 0") >= 0); + lock.acquire(1); + String ls = lock.toString(); + assertTrue(ls.indexOf("State = 1") >= 0); + } + + /** + * A serialized AQS deserializes with current state + */ + public void testSerialization() { + Mutex l = new Mutex(); + l.acquire(1); + assertTrue(l.isHeldExclusively()); + + try { + ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); + ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); + out.writeObject(l); + out.close(); + + ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); + ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); + Mutex r = (Mutex) in.readObject(); + assertTrue(r.isHeldExclusively()); + } catch(Exception e){ + e.printStackTrace(); + unexpectedException(); + } + } + + + /** + * tryReleaseShared setting state changes getState + */ + public void testGetStateWithReleaseShared() { final BooleanLatch l = new BooleanLatch(); assertFalse(l.isSignalled()); l.releaseShared(0); @@ -534,7 +1060,7 @@ public class AbstractQueuedSynchronizerT /** * release and has no effect when already signalled */ - public void testLatchBoolean() { + public void testReleaseShared() { final BooleanLatch l = new BooleanLatch(); assertFalse(l.isSignalled()); l.releaseShared(0); @@ -546,7 +1072,7 @@ public class AbstractQueuedSynchronizerT /** * acquireSharedInterruptibly returns after release, but not before */ - public void testLatchAcquireSharedInterruptibly() { + public void testAcquireSharedInterruptibly() { final BooleanLatch l = new BooleanLatch(); Thread t = new Thread(new Runnable() { @@ -576,14 +1102,14 @@ public class AbstractQueuedSynchronizerT /** * acquireSharedTimed returns after release */ - public void testLatchTimedacquireSharedInterruptibly() { + public void testAsquireSharedTimed() { final BooleanLatch l = new BooleanLatch(); Thread t = new Thread(new Runnable() { public void run() { try { threadAssertFalse(l.isSignalled()); - threadAssertTrue(l.acquireSharedNanos(0, MEDIUM_DELAY_MS* 1000 * 1000)); + threadAssertTrue(l.tryAcquireSharedNanos(0, MEDIUM_DELAY_MS* 1000 * 1000)); threadAssertTrue(l.isSignalled()); } catch(InterruptedException e){ @@ -606,7 +1132,7 @@ public class AbstractQueuedSynchronizerT /** * acquireSharedInterruptibly throws IE if interrupted before released */ - public void testLatchAcquireSharedInterruptibly_InterruptedException() { + public void testAcquireSharedInterruptibly_InterruptedException() { final BooleanLatch l = new BooleanLatch(); Thread t = new Thread(new Runnable() { public void run() { @@ -630,13 +1156,13 @@ public class AbstractQueuedSynchronizerT /** * acquireSharedTimed throws IE if interrupted before released */ - public void testLatchTimedAwait_InterruptedException() { + public void testAcquireSharedNanos_InterruptedException() { final BooleanLatch l = new BooleanLatch(); Thread t = new Thread(new Runnable() { public void run() { try { threadAssertFalse(l.isSignalled()); - l.acquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000); + l.tryAcquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000); threadShouldThrow(); } catch(InterruptedException success){} } @@ -655,13 +1181,13 @@ public class AbstractQueuedSynchronizerT /** * acquireSharedTimed times out if not released before timeout */ - public void testLatchAwaitTimeout() { + public void testAcquireSharedNanos_Timeout() { final BooleanLatch l = new BooleanLatch(); Thread t = new Thread(new Runnable() { public void run() { try { threadAssertFalse(l.isSignalled()); - threadAssertFalse(l.acquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000)); + threadAssertFalse(l.tryAcquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000)); } catch(InterruptedException ie){ threadUnexpectedException(); } @@ -676,5 +1202,6 @@ public class AbstractQueuedSynchronizerT unexpectedException(); } } + }