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* Written by Doug Lea with assistance from members of JCP JSR-166 |
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* Expert Group and released to the public domain, as explained at |
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* http://creativecommons.org/licenses/publicdomain |
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* Other contributors include Andrew Wright, Jeffrey Hayes, |
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* Pat Fisher, Mike Judd. |
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* Other contributors include Andrew Wright, Jeffrey Hayes, |
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* Pat Fisher, Mike Judd. |
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*/ |
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import junit.framework.*; |
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import java.util.*; |
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import java.util.concurrent.*; |
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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import java.util.concurrent.locks.*; |
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import java.io.*; |
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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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} |
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|
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/** |
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* A simple mutex class, from the AbstractQueuedSynchronizer |
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* javadoc. All tests exercise this as a sample user extension. |
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* Other methods/features of AbstractQueuedSynchronizerTest are |
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* tested implicitly in ReentrantLock, ReentrantReadWriteLock, and |
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* Semaphore test classes |
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*/ |
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static class Mutex implements Lock, java.io.Serializable { |
33 |
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private static class Sync extends AbstractQueuedSynchronizer { |
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boolean isLocked() { return getState() == 1; } |
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|
36 |
< |
public boolean tryAcquireExclusive(boolean isQueued, int acquires) { |
37 |
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assert acquires == 1; // Does not use multiple acquires |
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return compareAndSetState(0, 1); |
38 |
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} |
39 |
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|
40 |
< |
public boolean tryReleaseExclusive(int releases) { |
41 |
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setState(0); |
42 |
< |
return true; |
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} |
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|
45 |
< |
public void checkConditionAccess(Thread thread, boolean waiting) { |
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if (getState() == 0) throw new IllegalMonitorStateException(); |
47 |
< |
} |
48 |
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|
49 |
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Condition newCondition() { return new ConditionObject(); } |
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|
51 |
< |
private void readObject(ObjectInputStream s) throws IOException, ClassNotFoundException { |
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s.defaultReadObject(); |
53 |
< |
setState(0); // reset to unlocked state |
54 |
< |
} |
55 |
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} |
56 |
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|
57 |
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private final Sync sync = new Sync(); |
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public boolean tryLock() { |
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return sync.tryAcquireExclusive(false, 1); |
26 |
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* A simple mutex class, adapted from the |
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* AbstractQueuedSynchronizer javadoc. Exclusive acquire tests |
28 |
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* exercise this as a sample user extension. Other |
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* methods/features of AbstractQueuedSynchronizerTest are tested |
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* via other test classes, including those for ReentrantLock, |
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* ReentrantReadWriteLock, and Semaphore |
32 |
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*/ |
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static class Mutex extends AbstractQueuedSynchronizer { |
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public boolean isHeldExclusively() { return getState() == 1; } |
35 |
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|
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public boolean tryAcquire(int acquires) { |
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assertTrue(acquires == 1); |
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return compareAndSetState(0, 1); |
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} |
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public void lock() { |
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sync.acquireExclusiveUninterruptibly(1); |
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|
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public boolean tryRelease(int releases) { |
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if (getState() == 0) throw new IllegalMonitorStateException(); |
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> |
setState(0); |
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return true; |
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} |
46 |
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public void lockInterruptibly() throws InterruptedException { |
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sync.acquireExclusiveInterruptibly(1); |
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|
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public AbstractQueuedSynchronizer.ConditionObject newCondition() { return new AbstractQueuedSynchronizer.ConditionObject(); } |
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|
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} |
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|
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|
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/** |
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* A simple latch class, to test shared mode. |
54 |
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*/ |
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static class BooleanLatch extends AbstractQueuedSynchronizer { |
56 |
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public boolean isSignalled() { return getState() != 0; } |
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|
58 |
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public int tryAcquireShared(int ignore) { |
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return isSignalled()? 1 : -1; |
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} |
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public boolean tryLock(long timeout, TimeUnit unit) throws InterruptedException { |
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return sync.acquireExclusiveTimed(1, unit.toNanos(timeout)); |
61 |
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|
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public boolean tryReleaseShared(int ignore) { |
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setState(1); |
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return true; |
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} |
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public void unlock() { sync.releaseExclusive(1); } |
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public Condition newCondition() { return sync.newCondition(); } |
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public boolean isLocked() { return sync.isLocked(); } |
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public boolean hasQueuedThreads() { return sync.hasQueuedThreads(); } |
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} |
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|
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/** |
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* A runnable calling lockInterruptibly |
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*/ |
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class InterruptibleLockRunnable implements Runnable { |
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final Mutex lock; |
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InterruptibleLockRunnable(Mutex l) { lock = l; } |
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public void run() { |
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try { |
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lock.lockInterruptibly(); |
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} catch(InterruptedException success){} |
69 |
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* A runnable calling acquireInterruptibly that does not expect to |
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* be interrupted. |
71 |
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*/ |
72 |
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class InterruptibleSyncRunnable extends CheckedRunnable { |
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final Mutex sync; |
74 |
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InterruptibleSyncRunnable(Mutex l) { sync = l; } |
75 |
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public void realRun() throws InterruptedException { |
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sync.acquireInterruptibly(1); |
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} |
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} |
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|
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|
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/** |
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* A runnable calling lockInterruptibly that expects to be |
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* interrupted |
82 |
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* A runnable calling acquireInterruptibly that expects to be |
83 |
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* interrupted. |
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*/ |
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class InterruptedLockRunnable implements Runnable { |
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final Mutex lock; |
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InterruptedLockRunnable(Mutex l) { lock = l; } |
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public void run() { |
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try { |
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lock.lockInterruptibly(); |
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threadShouldThrow(); |
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} catch(InterruptedException success){} |
85 |
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class InterruptedSyncRunnable extends CheckedInterruptedRunnable { |
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final Mutex sync; |
87 |
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InterruptedSyncRunnable(Mutex l) { sync = l; } |
88 |
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public void realRun() throws InterruptedException { |
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sync.acquireInterruptibly(1); |
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} |
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} |
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|
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|
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/** |
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* locking an unlocked lock succeeds |
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* isHeldExclusively is false upon construction |
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*/ |
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public void testLock() { |
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Mutex rl = new Mutex(); |
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rl.lock(); |
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assertTrue(rl.isLocked()); |
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rl.unlock(); |
96 |
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public void testIsHeldExclusively() { |
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Mutex rl = new Mutex(); |
98 |
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assertFalse(rl.isHeldExclusively()); |
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} |
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|
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/** |
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* tryLock on an unlocked lock succeeds |
102 |
> |
* acquiring released sync succeeds |
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*/ |
104 |
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public void testTryLock() { |
105 |
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Mutex rl = new Mutex(); |
106 |
< |
assertTrue(rl.tryLock()); |
107 |
< |
assertTrue(rl.isLocked()); |
108 |
< |
rl.unlock(); |
104 |
> |
public void testAcquire() { |
105 |
> |
Mutex rl = new Mutex(); |
106 |
> |
rl.acquire(1); |
107 |
> |
assertTrue(rl.isHeldExclusively()); |
108 |
> |
rl.release(1); |
109 |
> |
assertFalse(rl.isHeldExclusively()); |
110 |
> |
} |
111 |
> |
|
112 |
> |
/** |
113 |
> |
* tryAcquire on an released sync succeeds |
114 |
> |
*/ |
115 |
> |
public void testTryAcquire() { |
116 |
> |
Mutex rl = new Mutex(); |
117 |
> |
assertTrue(rl.tryAcquire(1)); |
118 |
> |
assertTrue(rl.isHeldExclusively()); |
119 |
> |
rl.release(1); |
120 |
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} |
121 |
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|
122 |
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/** |
123 |
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* hasQueuedThreads reports whether there are waiting threads |
124 |
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*/ |
125 |
< |
public void testhasQueuedThreads() { |
126 |
< |
final Mutex lock = new Mutex(); |
127 |
< |
Thread t1 = new Thread(new InterruptedLockRunnable(lock)); |
128 |
< |
Thread t2 = new Thread(new InterruptibleLockRunnable(lock)); |
129 |
< |
try { |
130 |
< |
assertFalse(lock.hasQueuedThreads()); |
131 |
< |
lock.lock(); |
132 |
< |
t1.start(); |
133 |
< |
Thread.sleep(SHORT_DELAY_MS); |
134 |
< |
assertTrue(lock.hasQueuedThreads()); |
135 |
< |
t2.start(); |
136 |
< |
Thread.sleep(SHORT_DELAY_MS); |
137 |
< |
assertTrue(lock.hasQueuedThreads()); |
138 |
< |
t1.interrupt(); |
139 |
< |
Thread.sleep(SHORT_DELAY_MS); |
140 |
< |
assertTrue(lock.hasQueuedThreads()); |
141 |
< |
lock.unlock(); |
142 |
< |
Thread.sleep(SHORT_DELAY_MS); |
143 |
< |
assertFalse(lock.hasQueuedThreads()); |
144 |
< |
t1.join(); |
145 |
< |
t2.join(); |
149 |
< |
} catch(Exception e){ |
150 |
< |
unexpectedException(); |
151 |
< |
} |
152 |
< |
} |
125 |
> |
public void testhasQueuedThreads() throws InterruptedException { |
126 |
> |
final Mutex sync = new Mutex(); |
127 |
> |
Thread t1 = new Thread(new InterruptedSyncRunnable(sync)); |
128 |
> |
Thread t2 = new Thread(new InterruptibleSyncRunnable(sync)); |
129 |
> |
assertFalse(sync.hasQueuedThreads()); |
130 |
> |
sync.acquire(1); |
131 |
> |
t1.start(); |
132 |
> |
Thread.sleep(SHORT_DELAY_MS); |
133 |
> |
assertTrue(sync.hasQueuedThreads()); |
134 |
> |
t2.start(); |
135 |
> |
Thread.sleep(SHORT_DELAY_MS); |
136 |
> |
assertTrue(sync.hasQueuedThreads()); |
137 |
> |
t1.interrupt(); |
138 |
> |
Thread.sleep(SHORT_DELAY_MS); |
139 |
> |
assertTrue(sync.hasQueuedThreads()); |
140 |
> |
sync.release(1); |
141 |
> |
Thread.sleep(SHORT_DELAY_MS); |
142 |
> |
assertFalse(sync.hasQueuedThreads()); |
143 |
> |
t1.join(); |
144 |
> |
t2.join(); |
145 |
> |
} |
146 |
|
|
147 |
|
/** |
148 |
< |
* timed tryLock is interruptible. |
148 |
> |
* isQueued(null) throws NPE |
149 |
|
*/ |
150 |
< |
public void testInterruptedException2() { |
151 |
< |
final Mutex lock = new Mutex(); |
152 |
< |
lock.lock(); |
153 |
< |
Thread t = new Thread(new Runnable() { |
154 |
< |
public void run() { |
155 |
< |
try { |
163 |
< |
lock.tryLock(MEDIUM_DELAY_MS,TimeUnit.MILLISECONDS); |
164 |
< |
threadShouldThrow(); |
165 |
< |
} catch(InterruptedException success){} |
166 |
< |
} |
167 |
< |
}); |
168 |
< |
try { |
169 |
< |
t.start(); |
170 |
< |
t.interrupt(); |
171 |
< |
} catch(Exception e){ |
172 |
< |
unexpectedException(); |
173 |
< |
} |
150 |
> |
public void testIsQueuedNPE() { |
151 |
> |
final Mutex sync = new Mutex(); |
152 |
> |
try { |
153 |
> |
sync.isQueued(null); |
154 |
> |
shouldThrow(); |
155 |
> |
} catch (NullPointerException success) {} |
156 |
|
} |
157 |
|
|
158 |
+ |
/** |
159 |
+ |
* isQueued reports whether a thread is queued. |
160 |
+ |
*/ |
161 |
+ |
public void testIsQueued() throws InterruptedException { |
162 |
+ |
final Mutex sync = new Mutex(); |
163 |
+ |
Thread t1 = new Thread(new InterruptedSyncRunnable(sync)); |
164 |
+ |
Thread t2 = new Thread(new InterruptibleSyncRunnable(sync)); |
165 |
+ |
assertFalse(sync.isQueued(t1)); |
166 |
+ |
assertFalse(sync.isQueued(t2)); |
167 |
+ |
sync.acquire(1); |
168 |
+ |
t1.start(); |
169 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
170 |
+ |
assertTrue(sync.isQueued(t1)); |
171 |
+ |
t2.start(); |
172 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
173 |
+ |
assertTrue(sync.isQueued(t1)); |
174 |
+ |
assertTrue(sync.isQueued(t2)); |
175 |
+ |
t1.interrupt(); |
176 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
177 |
+ |
assertFalse(sync.isQueued(t1)); |
178 |
+ |
assertTrue(sync.isQueued(t2)); |
179 |
+ |
sync.release(1); |
180 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
181 |
+ |
assertFalse(sync.isQueued(t1)); |
182 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
183 |
+ |
assertFalse(sync.isQueued(t2)); |
184 |
+ |
t1.join(); |
185 |
+ |
t2.join(); |
186 |
+ |
} |
187 |
|
|
188 |
|
/** |
189 |
< |
* TryLock on a locked lock fails |
189 |
> |
* getFirstQueuedThread returns first waiting thread or null if none |
190 |
|
*/ |
191 |
< |
public void testTryLockWhenLocked() { |
192 |
< |
final Mutex lock = new Mutex(); |
193 |
< |
lock.lock(); |
194 |
< |
Thread t = new Thread(new Runnable() { |
195 |
< |
public void run() { |
196 |
< |
threadAssertFalse(lock.tryLock()); |
197 |
< |
} |
198 |
< |
}); |
199 |
< |
try { |
200 |
< |
t.start(); |
201 |
< |
t.join(); |
202 |
< |
lock.unlock(); |
203 |
< |
} catch(Exception e){ |
204 |
< |
unexpectedException(); |
205 |
< |
} |
206 |
< |
} |
191 |
> |
public void testGetFirstQueuedThread() throws InterruptedException { |
192 |
> |
final Mutex sync = new Mutex(); |
193 |
> |
Thread t1 = new Thread(new InterruptedSyncRunnable(sync)); |
194 |
> |
Thread t2 = new Thread(new InterruptibleSyncRunnable(sync)); |
195 |
> |
assertNull(sync.getFirstQueuedThread()); |
196 |
> |
sync.acquire(1); |
197 |
> |
t1.start(); |
198 |
> |
Thread.sleep(SHORT_DELAY_MS); |
199 |
> |
assertEquals(t1, sync.getFirstQueuedThread()); |
200 |
> |
t2.start(); |
201 |
> |
Thread.sleep(SHORT_DELAY_MS); |
202 |
> |
assertEquals(t1, sync.getFirstQueuedThread()); |
203 |
> |
t1.interrupt(); |
204 |
> |
Thread.sleep(SHORT_DELAY_MS); |
205 |
> |
Thread.sleep(SHORT_DELAY_MS); |
206 |
> |
assertEquals(t2, sync.getFirstQueuedThread()); |
207 |
> |
sync.release(1); |
208 |
> |
Thread.sleep(SHORT_DELAY_MS); |
209 |
> |
assertNull(sync.getFirstQueuedThread()); |
210 |
> |
t1.join(); |
211 |
> |
t2.join(); |
212 |
> |
} |
213 |
> |
|
214 |
|
|
215 |
|
/** |
216 |
< |
* Timed tryLock on a locked lock times out |
216 |
> |
* hasContended reports false if no thread has ever blocked, else true |
217 |
|
*/ |
218 |
< |
public void testTryLock_Timeout() { |
219 |
< |
final Mutex lock = new Mutex(); |
220 |
< |
lock.lock(); |
221 |
< |
Thread t = new Thread(new Runnable() { |
222 |
< |
public void run() { |
223 |
< |
try { |
224 |
< |
threadAssertFalse(lock.tryLock(1, TimeUnit.MILLISECONDS)); |
225 |
< |
} catch (Exception ex) { |
226 |
< |
threadUnexpectedException(); |
227 |
< |
} |
228 |
< |
} |
229 |
< |
}); |
230 |
< |
try { |
231 |
< |
t.start(); |
232 |
< |
t.join(); |
233 |
< |
lock.unlock(); |
234 |
< |
} catch(Exception e){ |
235 |
< |
unexpectedException(); |
236 |
< |
} |
237 |
< |
} |
220 |
< |
|
221 |
< |
|
222 |
< |
/** |
223 |
< |
* isLocked is true when locked and false when not |
224 |
< |
*/ |
225 |
< |
public void testIsLocked() { |
226 |
< |
final Mutex lock = new Mutex(); |
227 |
< |
lock.lock(); |
228 |
< |
assertTrue(lock.isLocked()); |
229 |
< |
lock.unlock(); |
230 |
< |
assertFalse(lock.isLocked()); |
231 |
< |
Thread t = new Thread(new Runnable() { |
232 |
< |
public void run() { |
233 |
< |
lock.lock(); |
234 |
< |
try { |
235 |
< |
Thread.sleep(SMALL_DELAY_MS); |
236 |
< |
} |
237 |
< |
catch(Exception e) { |
238 |
< |
threadUnexpectedException(); |
239 |
< |
} |
240 |
< |
lock.unlock(); |
241 |
< |
} |
242 |
< |
}); |
243 |
< |
try { |
244 |
< |
t.start(); |
245 |
< |
Thread.sleep(SHORT_DELAY_MS); |
246 |
< |
assertTrue(lock.isLocked()); |
247 |
< |
t.join(); |
248 |
< |
assertFalse(lock.isLocked()); |
249 |
< |
} catch(Exception e){ |
250 |
< |
unexpectedException(); |
251 |
< |
} |
218 |
> |
public void testHasContended() throws InterruptedException { |
219 |
> |
final Mutex sync = new Mutex(); |
220 |
> |
Thread t1 = new Thread(new InterruptedSyncRunnable(sync)); |
221 |
> |
Thread t2 = new Thread(new InterruptibleSyncRunnable(sync)); |
222 |
> |
assertFalse(sync.hasContended()); |
223 |
> |
sync.acquire(1); |
224 |
> |
t1.start(); |
225 |
> |
Thread.sleep(SHORT_DELAY_MS); |
226 |
> |
assertTrue(sync.hasContended()); |
227 |
> |
t2.start(); |
228 |
> |
Thread.sleep(SHORT_DELAY_MS); |
229 |
> |
assertTrue(sync.hasContended()); |
230 |
> |
t1.interrupt(); |
231 |
> |
Thread.sleep(SHORT_DELAY_MS); |
232 |
> |
assertTrue(sync.hasContended()); |
233 |
> |
sync.release(1); |
234 |
> |
Thread.sleep(SHORT_DELAY_MS); |
235 |
> |
assertTrue(sync.hasContended()); |
236 |
> |
t1.join(); |
237 |
> |
t2.join(); |
238 |
|
} |
239 |
|
|
240 |
+ |
/** |
241 |
+ |
* getQueuedThreads includes waiting threads |
242 |
+ |
*/ |
243 |
+ |
public void testGetQueuedThreads() throws InterruptedException { |
244 |
+ |
final Mutex sync = new Mutex(); |
245 |
+ |
Thread t1 = new Thread(new InterruptedSyncRunnable(sync)); |
246 |
+ |
Thread t2 = new Thread(new InterruptibleSyncRunnable(sync)); |
247 |
+ |
assertTrue(sync.getQueuedThreads().isEmpty()); |
248 |
+ |
sync.acquire(1); |
249 |
+ |
assertTrue(sync.getQueuedThreads().isEmpty()); |
250 |
+ |
t1.start(); |
251 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
252 |
+ |
assertTrue(sync.getQueuedThreads().contains(t1)); |
253 |
+ |
t2.start(); |
254 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
255 |
+ |
assertTrue(sync.getQueuedThreads().contains(t1)); |
256 |
+ |
assertTrue(sync.getQueuedThreads().contains(t2)); |
257 |
+ |
t1.interrupt(); |
258 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
259 |
+ |
assertFalse(sync.getQueuedThreads().contains(t1)); |
260 |
+ |
assertTrue(sync.getQueuedThreads().contains(t2)); |
261 |
+ |
sync.release(1); |
262 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
263 |
+ |
assertTrue(sync.getQueuedThreads().isEmpty()); |
264 |
+ |
t1.join(); |
265 |
+ |
t2.join(); |
266 |
+ |
} |
267 |
|
|
268 |
|
/** |
269 |
< |
* lockInterruptibly is interruptible. |
269 |
> |
* getExclusiveQueuedThreads includes waiting threads |
270 |
|
*/ |
271 |
< |
public void testLockInterruptibly1() { |
272 |
< |
final Mutex lock = new Mutex(); |
273 |
< |
lock.lock(); |
274 |
< |
Thread t = new Thread(new InterruptedLockRunnable(lock)); |
275 |
< |
try { |
276 |
< |
t.start(); |
277 |
< |
t.interrupt(); |
278 |
< |
lock.unlock(); |
279 |
< |
t.join(); |
280 |
< |
} catch(Exception e){ |
281 |
< |
unexpectedException(); |
282 |
< |
} |
283 |
< |
} |
271 |
> |
public void testGetExclusiveQueuedThreads() throws InterruptedException { |
272 |
> |
final Mutex sync = new Mutex(); |
273 |
> |
Thread t1 = new Thread(new InterruptedSyncRunnable(sync)); |
274 |
> |
Thread t2 = new Thread(new InterruptibleSyncRunnable(sync)); |
275 |
> |
assertTrue(sync.getExclusiveQueuedThreads().isEmpty()); |
276 |
> |
sync.acquire(1); |
277 |
> |
assertTrue(sync.getExclusiveQueuedThreads().isEmpty()); |
278 |
> |
t1.start(); |
279 |
> |
Thread.sleep(SHORT_DELAY_MS); |
280 |
> |
assertTrue(sync.getExclusiveQueuedThreads().contains(t1)); |
281 |
> |
t2.start(); |
282 |
> |
Thread.sleep(SHORT_DELAY_MS); |
283 |
> |
assertTrue(sync.getExclusiveQueuedThreads().contains(t1)); |
284 |
> |
assertTrue(sync.getExclusiveQueuedThreads().contains(t2)); |
285 |
> |
t1.interrupt(); |
286 |
> |
Thread.sleep(SHORT_DELAY_MS); |
287 |
> |
assertFalse(sync.getExclusiveQueuedThreads().contains(t1)); |
288 |
> |
assertTrue(sync.getExclusiveQueuedThreads().contains(t2)); |
289 |
> |
sync.release(1); |
290 |
> |
Thread.sleep(SHORT_DELAY_MS); |
291 |
> |
assertTrue(sync.getExclusiveQueuedThreads().isEmpty()); |
292 |
> |
t1.join(); |
293 |
> |
t2.join(); |
294 |
> |
} |
295 |
|
|
296 |
|
/** |
297 |
< |
* lockInterruptibly succeeds when unlocked, else is interruptible |
297 |
> |
* getSharedQueuedThreads does not include exclusively waiting threads |
298 |
|
*/ |
299 |
< |
public void testLockInterruptibly2() { |
300 |
< |
final Mutex lock = new Mutex(); |
301 |
< |
try { |
302 |
< |
lock.lockInterruptibly(); |
303 |
< |
} catch(Exception e) { |
304 |
< |
unexpectedException(); |
305 |
< |
} |
306 |
< |
Thread t = new Thread(new InterruptedLockRunnable(lock)); |
307 |
< |
try { |
308 |
< |
t.start(); |
309 |
< |
t.interrupt(); |
310 |
< |
assertTrue(lock.isLocked()); |
311 |
< |
t.join(); |
312 |
< |
} catch(Exception e){ |
313 |
< |
unexpectedException(); |
314 |
< |
} |
299 |
> |
public void testGetSharedQueuedThreads() throws InterruptedException { |
300 |
> |
final Mutex sync = new Mutex(); |
301 |
> |
Thread t1 = new Thread(new InterruptedSyncRunnable(sync)); |
302 |
> |
Thread t2 = new Thread(new InterruptibleSyncRunnable(sync)); |
303 |
> |
assertTrue(sync.getSharedQueuedThreads().isEmpty()); |
304 |
> |
sync.acquire(1); |
305 |
> |
assertTrue(sync.getSharedQueuedThreads().isEmpty()); |
306 |
> |
t1.start(); |
307 |
> |
Thread.sleep(SHORT_DELAY_MS); |
308 |
> |
assertTrue(sync.getSharedQueuedThreads().isEmpty()); |
309 |
> |
t2.start(); |
310 |
> |
Thread.sleep(SHORT_DELAY_MS); |
311 |
> |
assertTrue(sync.getSharedQueuedThreads().isEmpty()); |
312 |
> |
t1.interrupt(); |
313 |
> |
Thread.sleep(SHORT_DELAY_MS); |
314 |
> |
assertTrue(sync.getSharedQueuedThreads().isEmpty()); |
315 |
> |
sync.release(1); |
316 |
> |
Thread.sleep(SHORT_DELAY_MS); |
317 |
> |
assertTrue(sync.getSharedQueuedThreads().isEmpty()); |
318 |
> |
t1.join(); |
319 |
> |
t2.join(); |
320 |
> |
} |
321 |
> |
|
322 |
> |
/** |
323 |
> |
* tryAcquireNanos is interruptible. |
324 |
> |
*/ |
325 |
> |
public void testInterruptedException2() throws InterruptedException { |
326 |
> |
final Mutex sync = new Mutex(); |
327 |
> |
sync.acquire(1); |
328 |
> |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
329 |
> |
public void realRun() throws InterruptedException { |
330 |
> |
sync.tryAcquireNanos(1, MILLISECONDS.toNanos(MEDIUM_DELAY_MS)); |
331 |
> |
}}); |
332 |
> |
|
333 |
> |
t.start(); |
334 |
> |
Thread.sleep(SHORT_DELAY_MS); |
335 |
> |
t.interrupt(); |
336 |
> |
t.join(); |
337 |
> |
} |
338 |
> |
|
339 |
> |
|
340 |
> |
/** |
341 |
> |
* TryAcquire on exclusively held sync fails |
342 |
> |
*/ |
343 |
> |
public void testTryAcquireWhenSynced() throws InterruptedException { |
344 |
> |
final Mutex sync = new Mutex(); |
345 |
> |
sync.acquire(1); |
346 |
> |
Thread t = new Thread(new CheckedRunnable() { |
347 |
> |
public void realRun() { |
348 |
> |
threadAssertFalse(sync.tryAcquire(1)); |
349 |
> |
}}); |
350 |
> |
|
351 |
> |
t.start(); |
352 |
> |
t.join(); |
353 |
> |
sync.release(1); |
354 |
> |
} |
355 |
> |
|
356 |
> |
/** |
357 |
> |
* tryAcquireNanos on an exclusively held sync times out |
358 |
> |
*/ |
359 |
> |
public void testAcquireNanos_Timeout() throws InterruptedException { |
360 |
> |
final Mutex sync = new Mutex(); |
361 |
> |
sync.acquire(1); |
362 |
> |
Thread t = new Thread(new CheckedRunnable() { |
363 |
> |
public void realRun() throws InterruptedException { |
364 |
> |
long nanos = MILLISECONDS.toNanos(SHORT_DELAY_MS); |
365 |
> |
assertFalse(sync.tryAcquireNanos(1, nanos)); |
366 |
> |
}}); |
367 |
> |
|
368 |
> |
t.start(); |
369 |
> |
t.join(); |
370 |
> |
sync.release(1); |
371 |
> |
} |
372 |
> |
|
373 |
> |
|
374 |
> |
/** |
375 |
> |
* getState is true when acquired and false when not |
376 |
> |
*/ |
377 |
> |
public void testGetState() throws InterruptedException { |
378 |
> |
final Mutex sync = new Mutex(); |
379 |
> |
sync.acquire(1); |
380 |
> |
assertTrue(sync.isHeldExclusively()); |
381 |
> |
sync.release(1); |
382 |
> |
assertFalse(sync.isHeldExclusively()); |
383 |
> |
Thread t = new Thread(new CheckedRunnable() { |
384 |
> |
public void realRun() throws InterruptedException { |
385 |
> |
sync.acquire(1); |
386 |
> |
Thread.sleep(SMALL_DELAY_MS); |
387 |
> |
sync.release(1); |
388 |
> |
}}); |
389 |
> |
|
390 |
> |
t.start(); |
391 |
> |
Thread.sleep(SHORT_DELAY_MS); |
392 |
> |
assertTrue(sync.isHeldExclusively()); |
393 |
> |
t.join(); |
394 |
> |
assertFalse(sync.isHeldExclusively()); |
395 |
> |
} |
396 |
> |
|
397 |
> |
|
398 |
> |
/** |
399 |
> |
* acquireInterruptibly is interruptible. |
400 |
> |
*/ |
401 |
> |
public void testAcquireInterruptibly1() throws InterruptedException { |
402 |
> |
final Mutex sync = new Mutex(); |
403 |
> |
sync.acquire(1); |
404 |
> |
Thread t = new Thread(new InterruptedSyncRunnable(sync)); |
405 |
> |
|
406 |
> |
t.start(); |
407 |
> |
Thread.sleep(SHORT_DELAY_MS); |
408 |
> |
t.interrupt(); |
409 |
> |
Thread.sleep(SHORT_DELAY_MS); |
410 |
> |
sync.release(1); |
411 |
> |
t.join(); |
412 |
> |
} |
413 |
> |
|
414 |
> |
/** |
415 |
> |
* acquireInterruptibly succeeds when released, else is interruptible |
416 |
> |
*/ |
417 |
> |
public void testAcquireInterruptibly2() throws InterruptedException { |
418 |
> |
final Mutex sync = new Mutex(); |
419 |
> |
sync.acquireInterruptibly(1); |
420 |
> |
Thread t = new Thread(new InterruptedSyncRunnable(sync)); |
421 |
> |
t.start(); |
422 |
> |
Thread.sleep(SHORT_DELAY_MS); |
423 |
> |
t.interrupt(); |
424 |
> |
assertTrue(sync.isHeldExclusively()); |
425 |
> |
t.join(); |
426 |
> |
} |
427 |
> |
|
428 |
> |
/** |
429 |
> |
* owns is true for a condition created by sync else false |
430 |
> |
*/ |
431 |
> |
public void testOwns() { |
432 |
> |
final Mutex sync = new Mutex(); |
433 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
434 |
> |
final Mutex sync2 = new Mutex(); |
435 |
> |
assertTrue(sync.owns(c)); |
436 |
> |
assertFalse(sync2.owns(c)); |
437 |
|
} |
438 |
|
|
439 |
|
/** |
440 |
< |
* Calling await without holding lock throws IllegalMonitorStateException |
440 |
> |
* Calling await without holding sync throws IllegalMonitorStateException |
441 |
|
*/ |
442 |
< |
public void testAwait_IllegalMonitor() { |
443 |
< |
final Mutex lock = new Mutex(); |
444 |
< |
final Condition c = lock.newCondition(); |
442 |
> |
public void testAwait_IllegalMonitor() throws InterruptedException { |
443 |
> |
final Mutex sync = new Mutex(); |
444 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
445 |
|
try { |
446 |
|
c.await(); |
447 |
|
shouldThrow(); |
448 |
< |
} |
303 |
< |
catch (IllegalMonitorStateException success) { |
304 |
< |
} |
305 |
< |
catch (Exception ex) { |
306 |
< |
unexpectedException(); |
307 |
< |
} |
448 |
> |
} catch (IllegalMonitorStateException success) {} |
449 |
|
} |
450 |
|
|
451 |
|
/** |
452 |
< |
* Calling signal without holding lock throws IllegalMonitorStateException |
452 |
> |
* Calling signal without holding sync throws IllegalMonitorStateException |
453 |
|
*/ |
454 |
|
public void testSignal_IllegalMonitor() { |
455 |
< |
final Mutex lock = new Mutex(); |
456 |
< |
final Condition c = lock.newCondition(); |
455 |
> |
final Mutex sync = new Mutex(); |
456 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
457 |
|
try { |
458 |
|
c.signal(); |
459 |
|
shouldThrow(); |
460 |
< |
} |
320 |
< |
catch (IllegalMonitorStateException success) { |
321 |
< |
} |
322 |
< |
catch (Exception ex) { |
323 |
< |
unexpectedException(); |
324 |
< |
} |
460 |
> |
} catch (IllegalMonitorStateException success) {} |
461 |
|
} |
462 |
|
|
463 |
|
/** |
464 |
|
* awaitNanos without a signal times out |
465 |
|
*/ |
466 |
< |
public void testAwaitNanos_Timeout() { |
467 |
< |
final Mutex lock = new Mutex(); |
468 |
< |
final Condition c = lock.newCondition(); |
469 |
< |
try { |
470 |
< |
lock.lock(); |
471 |
< |
long t = c.awaitNanos(100); |
472 |
< |
assertTrue(t <= 0); |
337 |
< |
lock.unlock(); |
338 |
< |
} |
339 |
< |
catch (Exception ex) { |
340 |
< |
unexpectedException(); |
341 |
< |
} |
466 |
> |
public void testAwaitNanos_Timeout() throws InterruptedException { |
467 |
> |
final Mutex sync = new Mutex(); |
468 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
469 |
> |
sync.acquire(1); |
470 |
> |
long t = c.awaitNanos(100); |
471 |
> |
assertTrue(t <= 0); |
472 |
> |
sync.release(1); |
473 |
|
} |
474 |
|
|
475 |
|
/** |
476 |
< |
* timed await without a signal times out |
476 |
> |
* Timed await without a signal times out |
477 |
|
*/ |
478 |
< |
public void testAwait_Timeout() { |
479 |
< |
final Mutex lock = new Mutex(); |
480 |
< |
final Condition c = lock.newCondition(); |
481 |
< |
try { |
482 |
< |
lock.lock(); |
483 |
< |
assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
353 |
< |
lock.unlock(); |
354 |
< |
} |
355 |
< |
catch (Exception ex) { |
356 |
< |
unexpectedException(); |
357 |
< |
} |
478 |
> |
public void testAwait_Timeout() throws InterruptedException { |
479 |
> |
final Mutex sync = new Mutex(); |
480 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
481 |
> |
sync.acquire(1); |
482 |
> |
assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS)); |
483 |
> |
sync.release(1); |
484 |
|
} |
485 |
|
|
486 |
|
/** |
487 |
|
* awaitUntil without a signal times out |
488 |
|
*/ |
489 |
< |
public void testAwaitUntil_Timeout() { |
490 |
< |
final Mutex lock = new Mutex(); |
491 |
< |
final Condition c = lock.newCondition(); |
492 |
< |
try { |
493 |
< |
lock.lock(); |
494 |
< |
java.util.Date d = new java.util.Date(); |
495 |
< |
assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10))); |
370 |
< |
lock.unlock(); |
371 |
< |
} |
372 |
< |
catch (Exception ex) { |
373 |
< |
unexpectedException(); |
374 |
< |
} |
489 |
> |
public void testAwaitUntil_Timeout() throws InterruptedException { |
490 |
> |
final Mutex sync = new Mutex(); |
491 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
492 |
> |
sync.acquire(1); |
493 |
> |
java.util.Date d = new java.util.Date(); |
494 |
> |
assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10))); |
495 |
> |
sync.release(1); |
496 |
|
} |
497 |
|
|
498 |
|
/** |
499 |
|
* await returns when signalled |
500 |
|
*/ |
501 |
< |
public void testAwait() { |
502 |
< |
final Mutex lock = new Mutex(); |
503 |
< |
final Condition c = lock.newCondition(); |
504 |
< |
Thread t = new Thread(new Runnable() { |
505 |
< |
public void run() { |
506 |
< |
try { |
507 |
< |
lock.lock(); |
508 |
< |
c.await(); |
509 |
< |
lock.unlock(); |
510 |
< |
} |
511 |
< |
catch(InterruptedException e) { |
512 |
< |
threadUnexpectedException(); |
513 |
< |
} |
514 |
< |
} |
515 |
< |
}); |
516 |
< |
|
517 |
< |
try { |
518 |
< |
t.start(); |
519 |
< |
Thread.sleep(SHORT_DELAY_MS); |
520 |
< |
lock.lock(); |
521 |
< |
c.signal(); |
522 |
< |
lock.unlock(); |
523 |
< |
t.join(SHORT_DELAY_MS); |
524 |
< |
assertFalse(t.isAlive()); |
525 |
< |
} |
526 |
< |
catch (Exception ex) { |
527 |
< |
unexpectedException(); |
528 |
< |
} |
501 |
> |
public void testAwait() throws InterruptedException { |
502 |
> |
final Mutex sync = new Mutex(); |
503 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
504 |
> |
Thread t = new Thread(new CheckedRunnable() { |
505 |
> |
public void realRun() throws InterruptedException { |
506 |
> |
sync.acquire(1); |
507 |
> |
c.await(); |
508 |
> |
sync.release(1); |
509 |
> |
}}); |
510 |
> |
|
511 |
> |
t.start(); |
512 |
> |
Thread.sleep(SHORT_DELAY_MS); |
513 |
> |
sync.acquire(1); |
514 |
> |
c.signal(); |
515 |
> |
sync.release(1); |
516 |
> |
t.join(SHORT_DELAY_MS); |
517 |
> |
assertFalse(t.isAlive()); |
518 |
> |
} |
519 |
> |
|
520 |
> |
|
521 |
> |
|
522 |
> |
/** |
523 |
> |
* hasWaiters throws NPE if null |
524 |
> |
*/ |
525 |
> |
public void testHasWaitersNPE() { |
526 |
> |
final Mutex sync = new Mutex(); |
527 |
> |
try { |
528 |
> |
sync.hasWaiters(null); |
529 |
> |
shouldThrow(); |
530 |
> |
} catch (NullPointerException success) {} |
531 |
> |
} |
532 |
> |
|
533 |
> |
/** |
534 |
> |
* getWaitQueueLength throws NPE if null |
535 |
> |
*/ |
536 |
> |
public void testGetWaitQueueLengthNPE() { |
537 |
> |
final Mutex sync = new Mutex(); |
538 |
> |
try { |
539 |
> |
sync.getWaitQueueLength(null); |
540 |
> |
shouldThrow(); |
541 |
> |
} catch (NullPointerException success) {} |
542 |
> |
} |
543 |
> |
|
544 |
> |
|
545 |
> |
/** |
546 |
> |
* getWaitingThreads throws NPE if null |
547 |
> |
*/ |
548 |
> |
public void testGetWaitingThreadsNPE() { |
549 |
> |
final Mutex sync = new Mutex(); |
550 |
> |
try { |
551 |
> |
sync.getWaitingThreads(null); |
552 |
> |
shouldThrow(); |
553 |
> |
} catch (NullPointerException success) {} |
554 |
> |
} |
555 |
> |
|
556 |
> |
|
557 |
> |
/** |
558 |
> |
* hasWaiters throws IAE if not owned |
559 |
> |
*/ |
560 |
> |
public void testHasWaitersIAE() { |
561 |
> |
final Mutex sync = new Mutex(); |
562 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
563 |
> |
final Mutex sync2 = new Mutex(); |
564 |
> |
try { |
565 |
> |
sync2.hasWaiters(c); |
566 |
> |
shouldThrow(); |
567 |
> |
} catch (IllegalArgumentException success) {} |
568 |
> |
} |
569 |
> |
|
570 |
> |
/** |
571 |
> |
* hasWaiters throws IMSE if not synced |
572 |
> |
*/ |
573 |
> |
public void testHasWaitersIMSE() { |
574 |
> |
final Mutex sync = new Mutex(); |
575 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
576 |
> |
try { |
577 |
> |
sync.hasWaiters(c); |
578 |
> |
shouldThrow(); |
579 |
> |
} catch (IllegalMonitorStateException success) {} |
580 |
> |
} |
581 |
> |
|
582 |
> |
|
583 |
> |
/** |
584 |
> |
* getWaitQueueLength throws IAE if not owned |
585 |
> |
*/ |
586 |
> |
public void testGetWaitQueueLengthIAE() { |
587 |
> |
final Mutex sync = new Mutex(); |
588 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
589 |
> |
final Mutex sync2 = new Mutex(); |
590 |
> |
try { |
591 |
> |
sync2.getWaitQueueLength(c); |
592 |
> |
shouldThrow(); |
593 |
> |
} catch (IllegalArgumentException success) {} |
594 |
> |
} |
595 |
> |
|
596 |
> |
/** |
597 |
> |
* getWaitQueueLength throws IMSE if not synced |
598 |
> |
*/ |
599 |
> |
public void testGetWaitQueueLengthIMSE() { |
600 |
> |
final Mutex sync = new Mutex(); |
601 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
602 |
> |
try { |
603 |
> |
sync.getWaitQueueLength(c); |
604 |
> |
shouldThrow(); |
605 |
> |
} catch (IllegalMonitorStateException success) {} |
606 |
> |
} |
607 |
> |
|
608 |
> |
|
609 |
> |
/** |
610 |
> |
* getWaitingThreads throws IAE if not owned |
611 |
> |
*/ |
612 |
> |
public void testGetWaitingThreadsIAE() { |
613 |
> |
final Mutex sync = new Mutex(); |
614 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
615 |
> |
final Mutex sync2 = new Mutex(); |
616 |
> |
try { |
617 |
> |
sync2.getWaitingThreads(c); |
618 |
> |
shouldThrow(); |
619 |
> |
} catch (IllegalArgumentException success) {} |
620 |
> |
} |
621 |
> |
|
622 |
> |
/** |
623 |
> |
* getWaitingThreads throws IMSE if not synced |
624 |
> |
*/ |
625 |
> |
public void testGetWaitingThreadsIMSE() { |
626 |
> |
final Mutex sync = new Mutex(); |
627 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
628 |
> |
try { |
629 |
> |
sync.getWaitingThreads(c); |
630 |
> |
shouldThrow(); |
631 |
> |
} catch (IllegalMonitorStateException success) {} |
632 |
> |
} |
633 |
> |
|
634 |
> |
|
635 |
> |
|
636 |
> |
/** |
637 |
> |
* hasWaiters returns true when a thread is waiting, else false |
638 |
> |
*/ |
639 |
> |
public void testHasWaiters() throws InterruptedException { |
640 |
> |
final Mutex sync = new Mutex(); |
641 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
642 |
> |
Thread t = new Thread(new CheckedRunnable() { |
643 |
> |
public void realRun() throws InterruptedException { |
644 |
> |
sync.acquire(1); |
645 |
> |
threadAssertFalse(sync.hasWaiters(c)); |
646 |
> |
threadAssertEquals(0, sync.getWaitQueueLength(c)); |
647 |
> |
c.await(); |
648 |
> |
sync.release(1); |
649 |
> |
}}); |
650 |
> |
|
651 |
> |
t.start(); |
652 |
> |
Thread.sleep(SHORT_DELAY_MS); |
653 |
> |
sync.acquire(1); |
654 |
> |
assertTrue(sync.hasWaiters(c)); |
655 |
> |
assertEquals(1, sync.getWaitQueueLength(c)); |
656 |
> |
c.signal(); |
657 |
> |
sync.release(1); |
658 |
> |
Thread.sleep(SHORT_DELAY_MS); |
659 |
> |
sync.acquire(1); |
660 |
> |
assertFalse(sync.hasWaiters(c)); |
661 |
> |
assertEquals(0, sync.getWaitQueueLength(c)); |
662 |
> |
sync.release(1); |
663 |
> |
t.join(SHORT_DELAY_MS); |
664 |
> |
assertFalse(t.isAlive()); |
665 |
> |
} |
666 |
> |
|
667 |
> |
/** |
668 |
> |
* getWaitQueueLength returns number of waiting threads |
669 |
> |
*/ |
670 |
> |
public void testGetWaitQueueLength() throws InterruptedException { |
671 |
> |
final Mutex sync = new Mutex(); |
672 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
673 |
> |
Thread t1 = new Thread(new CheckedRunnable() { |
674 |
> |
public void realRun() throws InterruptedException { |
675 |
> |
sync.acquire(1); |
676 |
> |
threadAssertFalse(sync.hasWaiters(c)); |
677 |
> |
threadAssertEquals(0, sync.getWaitQueueLength(c)); |
678 |
> |
c.await(); |
679 |
> |
sync.release(1); |
680 |
> |
}}); |
681 |
> |
|
682 |
> |
Thread t2 = new Thread(new CheckedRunnable() { |
683 |
> |
public void realRun() throws InterruptedException { |
684 |
> |
sync.acquire(1); |
685 |
> |
threadAssertTrue(sync.hasWaiters(c)); |
686 |
> |
threadAssertEquals(1, sync.getWaitQueueLength(c)); |
687 |
> |
c.await(); |
688 |
> |
sync.release(1); |
689 |
> |
}}); |
690 |
> |
|
691 |
> |
t1.start(); |
692 |
> |
Thread.sleep(SHORT_DELAY_MS); |
693 |
> |
t2.start(); |
694 |
> |
Thread.sleep(SHORT_DELAY_MS); |
695 |
> |
sync.acquire(1); |
696 |
> |
assertTrue(sync.hasWaiters(c)); |
697 |
> |
assertEquals(2, sync.getWaitQueueLength(c)); |
698 |
> |
c.signalAll(); |
699 |
> |
sync.release(1); |
700 |
> |
Thread.sleep(SHORT_DELAY_MS); |
701 |
> |
sync.acquire(1); |
702 |
> |
assertFalse(sync.hasWaiters(c)); |
703 |
> |
assertEquals(0, sync.getWaitQueueLength(c)); |
704 |
> |
sync.release(1); |
705 |
> |
t1.join(SHORT_DELAY_MS); |
706 |
> |
t2.join(SHORT_DELAY_MS); |
707 |
> |
assertFalse(t1.isAlive()); |
708 |
> |
assertFalse(t2.isAlive()); |
709 |
> |
} |
710 |
> |
|
711 |
> |
/** |
712 |
> |
* getWaitingThreads returns only and all waiting threads |
713 |
> |
*/ |
714 |
> |
public void testGetWaitingThreads() throws InterruptedException { |
715 |
> |
final Mutex sync = new Mutex(); |
716 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
717 |
> |
Thread t1 = new Thread(new CheckedRunnable() { |
718 |
> |
public void realRun() throws InterruptedException { |
719 |
> |
sync.acquire(1); |
720 |
> |
threadAssertTrue(sync.getWaitingThreads(c).isEmpty()); |
721 |
> |
c.await(); |
722 |
> |
sync.release(1); |
723 |
> |
}}); |
724 |
> |
|
725 |
> |
Thread t2 = new Thread(new CheckedRunnable() { |
726 |
> |
public void realRun() throws InterruptedException { |
727 |
> |
sync.acquire(1); |
728 |
> |
threadAssertFalse(sync.getWaitingThreads(c).isEmpty()); |
729 |
> |
c.await(); |
730 |
> |
sync.release(1); |
731 |
> |
}}); |
732 |
> |
|
733 |
> |
sync.acquire(1); |
734 |
> |
assertTrue(sync.getWaitingThreads(c).isEmpty()); |
735 |
> |
sync.release(1); |
736 |
> |
t1.start(); |
737 |
> |
Thread.sleep(SHORT_DELAY_MS); |
738 |
> |
t2.start(); |
739 |
> |
Thread.sleep(SHORT_DELAY_MS); |
740 |
> |
sync.acquire(1); |
741 |
> |
assertTrue(sync.hasWaiters(c)); |
742 |
> |
assertTrue(sync.getWaitingThreads(c).contains(t1)); |
743 |
> |
assertTrue(sync.getWaitingThreads(c).contains(t2)); |
744 |
> |
c.signalAll(); |
745 |
> |
sync.release(1); |
746 |
> |
Thread.sleep(SHORT_DELAY_MS); |
747 |
> |
sync.acquire(1); |
748 |
> |
assertFalse(sync.hasWaiters(c)); |
749 |
> |
assertTrue(sync.getWaitingThreads(c).isEmpty()); |
750 |
> |
sync.release(1); |
751 |
> |
t1.join(SHORT_DELAY_MS); |
752 |
> |
t2.join(SHORT_DELAY_MS); |
753 |
> |
assertFalse(t1.isAlive()); |
754 |
> |
assertFalse(t2.isAlive()); |
755 |
> |
} |
756 |
> |
|
757 |
> |
|
758 |
> |
|
759 |
> |
/** |
760 |
> |
* awaitUninterruptibly doesn't abort on interrupt |
761 |
> |
*/ |
762 |
> |
public void testAwaitUninterruptibly() throws InterruptedException { |
763 |
> |
final Mutex sync = new Mutex(); |
764 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
765 |
> |
Thread t = new Thread(new CheckedRunnable() { |
766 |
> |
public void realRun() { |
767 |
> |
sync.acquire(1); |
768 |
> |
c.awaitUninterruptibly(); |
769 |
> |
sync.release(1); |
770 |
> |
}}); |
771 |
> |
|
772 |
> |
t.start(); |
773 |
> |
Thread.sleep(SHORT_DELAY_MS); |
774 |
> |
t.interrupt(); |
775 |
> |
sync.acquire(1); |
776 |
> |
c.signal(); |
777 |
> |
sync.release(1); |
778 |
> |
t.join(SHORT_DELAY_MS); |
779 |
> |
assertFalse(t.isAlive()); |
780 |
> |
} |
781 |
> |
|
782 |
> |
/** |
783 |
> |
* await is interruptible |
784 |
> |
*/ |
785 |
> |
public void testAwait_Interrupt() throws InterruptedException { |
786 |
> |
final Mutex sync = new Mutex(); |
787 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
788 |
> |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
789 |
> |
public void realRun() throws InterruptedException { |
790 |
> |
sync.acquire(1); |
791 |
> |
c.await(); |
792 |
> |
}}); |
793 |
> |
|
794 |
> |
t.start(); |
795 |
> |
Thread.sleep(SHORT_DELAY_MS); |
796 |
> |
t.interrupt(); |
797 |
> |
t.join(SHORT_DELAY_MS); |
798 |
> |
assertFalse(t.isAlive()); |
799 |
> |
} |
800 |
> |
|
801 |
> |
/** |
802 |
> |
* awaitNanos is interruptible |
803 |
> |
*/ |
804 |
> |
public void testAwaitNanos_Interrupt() throws InterruptedException { |
805 |
> |
final Mutex sync = new Mutex(); |
806 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
807 |
> |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
808 |
> |
public void realRun() throws InterruptedException { |
809 |
> |
sync.acquire(1); |
810 |
> |
c.awaitNanos(MILLISECONDS.toNanos(LONG_DELAY_MS)); |
811 |
> |
}}); |
812 |
> |
|
813 |
> |
t.start(); |
814 |
> |
Thread.sleep(SHORT_DELAY_MS); |
815 |
> |
t.interrupt(); |
816 |
> |
t.join(SHORT_DELAY_MS); |
817 |
> |
assertFalse(t.isAlive()); |
818 |
> |
} |
819 |
> |
|
820 |
> |
/** |
821 |
> |
* awaitUntil is interruptible |
822 |
> |
*/ |
823 |
> |
public void testAwaitUntil_Interrupt() throws InterruptedException { |
824 |
> |
final Mutex sync = new Mutex(); |
825 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
826 |
> |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
827 |
> |
public void realRun() throws InterruptedException { |
828 |
> |
sync.acquire(1); |
829 |
> |
java.util.Date d = new java.util.Date(); |
830 |
> |
c.awaitUntil(new java.util.Date(d.getTime() + 10000)); |
831 |
> |
}}); |
832 |
> |
|
833 |
> |
t.start(); |
834 |
> |
Thread.sleep(SHORT_DELAY_MS); |
835 |
> |
t.interrupt(); |
836 |
> |
t.join(SHORT_DELAY_MS); |
837 |
> |
assertFalse(t.isAlive()); |
838 |
> |
} |
839 |
> |
|
840 |
> |
/** |
841 |
> |
* signalAll wakes up all threads |
842 |
> |
*/ |
843 |
> |
public void testSignalAll() throws InterruptedException { |
844 |
> |
final Mutex sync = new Mutex(); |
845 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
846 |
> |
Thread t1 = new Thread(new CheckedRunnable() { |
847 |
> |
public void realRun() throws InterruptedException { |
848 |
> |
sync.acquire(1); |
849 |
> |
c.await(); |
850 |
> |
sync.release(1); |
851 |
> |
}}); |
852 |
> |
|
853 |
> |
Thread t2 = new Thread(new CheckedRunnable() { |
854 |
> |
public void realRun() throws InterruptedException { |
855 |
> |
sync.acquire(1); |
856 |
> |
c.await(); |
857 |
> |
sync.release(1); |
858 |
> |
}}); |
859 |
> |
|
860 |
> |
t1.start(); |
861 |
> |
t2.start(); |
862 |
> |
Thread.sleep(SHORT_DELAY_MS); |
863 |
> |
sync.acquire(1); |
864 |
> |
c.signalAll(); |
865 |
> |
sync.release(1); |
866 |
> |
t1.join(SHORT_DELAY_MS); |
867 |
> |
t2.join(SHORT_DELAY_MS); |
868 |
> |
assertFalse(t1.isAlive()); |
869 |
> |
assertFalse(t2.isAlive()); |
870 |
> |
} |
871 |
> |
|
872 |
> |
|
873 |
> |
/** |
874 |
> |
* toString indicates current state |
875 |
> |
*/ |
876 |
> |
public void testToString() { |
877 |
> |
Mutex sync = new Mutex(); |
878 |
> |
String us = sync.toString(); |
879 |
> |
assertTrue(us.indexOf("State = 0") >= 0); |
880 |
> |
sync.acquire(1); |
881 |
> |
String ls = sync.toString(); |
882 |
> |
assertTrue(ls.indexOf("State = 1") >= 0); |
883 |
> |
} |
884 |
> |
|
885 |
> |
/** |
886 |
> |
* A serialized AQS deserializes with current state |
887 |
> |
*/ |
888 |
> |
public void testSerialization() throws Exception { |
889 |
> |
Mutex l = new Mutex(); |
890 |
> |
l.acquire(1); |
891 |
> |
assertTrue(l.isHeldExclusively()); |
892 |
> |
|
893 |
> |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
894 |
> |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
895 |
> |
out.writeObject(l); |
896 |
> |
out.close(); |
897 |
> |
|
898 |
> |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
899 |
> |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
900 |
> |
Mutex r = (Mutex) in.readObject(); |
901 |
> |
assertTrue(r.isHeldExclusively()); |
902 |
> |
} |
903 |
> |
|
904 |
> |
|
905 |
> |
/** |
906 |
> |
* tryReleaseShared setting state changes getState |
907 |
> |
*/ |
908 |
> |
public void testGetStateWithReleaseShared() { |
909 |
> |
final BooleanLatch l = new BooleanLatch(); |
910 |
> |
assertFalse(l.isSignalled()); |
911 |
> |
l.releaseShared(0); |
912 |
> |
assertTrue(l.isSignalled()); |
913 |
|
} |
914 |
< |
|
914 |
> |
|
915 |
> |
/** |
916 |
> |
* releaseShared has no effect when already signalled |
917 |
> |
*/ |
918 |
> |
public void testReleaseShared() { |
919 |
> |
final BooleanLatch l = new BooleanLatch(); |
920 |
> |
assertFalse(l.isSignalled()); |
921 |
> |
l.releaseShared(0); |
922 |
> |
assertTrue(l.isSignalled()); |
923 |
> |
l.releaseShared(0); |
924 |
> |
assertTrue(l.isSignalled()); |
925 |
> |
} |
926 |
> |
|
927 |
> |
/** |
928 |
> |
* acquireSharedInterruptibly returns after release, but not before |
929 |
> |
*/ |
930 |
> |
public void testAcquireSharedInterruptibly() throws InterruptedException { |
931 |
> |
final BooleanLatch l = new BooleanLatch(); |
932 |
> |
|
933 |
> |
Thread t = new Thread(new CheckedRunnable() { |
934 |
> |
public void realRun() throws InterruptedException { |
935 |
> |
threadAssertFalse(l.isSignalled()); |
936 |
> |
l.acquireSharedInterruptibly(0); |
937 |
> |
threadAssertTrue(l.isSignalled()); |
938 |
> |
}}); |
939 |
> |
|
940 |
> |
t.start(); |
941 |
> |
assertFalse(l.isSignalled()); |
942 |
> |
Thread.sleep(SHORT_DELAY_MS); |
943 |
> |
l.releaseShared(0); |
944 |
> |
assertTrue(l.isSignalled()); |
945 |
> |
t.join(); |
946 |
> |
} |
947 |
> |
|
948 |
> |
|
949 |
> |
/** |
950 |
> |
* acquireSharedTimed returns after release |
951 |
> |
*/ |
952 |
> |
public void testAsquireSharedTimed() throws InterruptedException { |
953 |
> |
final BooleanLatch l = new BooleanLatch(); |
954 |
> |
|
955 |
> |
Thread t = new Thread(new CheckedRunnable() { |
956 |
> |
public void realRun() throws InterruptedException { |
957 |
> |
assertFalse(l.isSignalled()); |
958 |
> |
long nanos = MILLISECONDS.toNanos(MEDIUM_DELAY_MS); |
959 |
> |
assertTrue(l.tryAcquireSharedNanos(0, nanos)); |
960 |
> |
assertTrue(l.isSignalled()); |
961 |
> |
}}); |
962 |
> |
|
963 |
> |
t.start(); |
964 |
> |
assertFalse(l.isSignalled()); |
965 |
> |
Thread.sleep(SHORT_DELAY_MS); |
966 |
> |
l.releaseShared(0); |
967 |
> |
assertTrue(l.isSignalled()); |
968 |
> |
t.join(); |
969 |
> |
} |
970 |
> |
|
971 |
> |
/** |
972 |
> |
* acquireSharedInterruptibly throws IE if interrupted before released |
973 |
> |
*/ |
974 |
> |
public void testAcquireSharedInterruptibly_InterruptedException() throws InterruptedException { |
975 |
> |
final BooleanLatch l = new BooleanLatch(); |
976 |
> |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
977 |
> |
public void realRun() throws InterruptedException { |
978 |
> |
threadAssertFalse(l.isSignalled()); |
979 |
> |
l.acquireSharedInterruptibly(0); |
980 |
> |
}}); |
981 |
> |
|
982 |
> |
t.start(); |
983 |
> |
assertFalse(l.isSignalled()); |
984 |
> |
t.interrupt(); |
985 |
> |
t.join(); |
986 |
> |
} |
987 |
> |
|
988 |
> |
/** |
989 |
> |
* acquireSharedTimed throws IE if interrupted before released |
990 |
> |
*/ |
991 |
> |
public void testAcquireSharedNanos_InterruptedException() throws InterruptedException { |
992 |
> |
final BooleanLatch l = new BooleanLatch(); |
993 |
> |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
994 |
> |
public void realRun() throws InterruptedException { |
995 |
> |
assertFalse(l.isSignalled()); |
996 |
> |
long nanos = MILLISECONDS.toNanos(SMALL_DELAY_MS); |
997 |
> |
l.tryAcquireSharedNanos(0, nanos); |
998 |
> |
}}); |
999 |
> |
|
1000 |
> |
t.start(); |
1001 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1002 |
> |
assertFalse(l.isSignalled()); |
1003 |
> |
t.interrupt(); |
1004 |
> |
t.join(); |
1005 |
> |
} |
1006 |
> |
|
1007 |
> |
/** |
1008 |
> |
* acquireSharedTimed times out if not released before timeout |
1009 |
> |
*/ |
1010 |
> |
public void testAcquireSharedNanos_Timeout() throws InterruptedException { |
1011 |
> |
final BooleanLatch l = new BooleanLatch(); |
1012 |
> |
Thread t = new Thread(new CheckedRunnable() { |
1013 |
> |
public void realRun() throws InterruptedException { |
1014 |
> |
assertFalse(l.isSignalled()); |
1015 |
> |
long nanos = MILLISECONDS.toNanos(SMALL_DELAY_MS); |
1016 |
> |
assertFalse(l.tryAcquireSharedNanos(0, nanos)); |
1017 |
> |
}}); |
1018 |
> |
|
1019 |
> |
t.start(); |
1020 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1021 |
> |
assertFalse(l.isSignalled()); |
1022 |
> |
t.join(); |
1023 |
> |
} |
1024 |
> |
|
1025 |
|
} |