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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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} |
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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. |
28 |
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* Other methods/features of AbstractQueuedSynchronizerTest are |
29 |
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* tested implicitly in ReentrantLock, ReentrantReadWriteLock, and |
30 |
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* Semaphore test classes |
31 |
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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; } |
35 |
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|
36 |
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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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} |
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|
40 |
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public boolean tryReleaseExclusive(int releases) { |
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setState(0); |
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return true; |
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} |
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|
45 |
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public void checkConditionAccess(Thread thread, boolean waiting) { |
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if (getState() == 0) throw new IllegalMonitorStateException(); |
47 |
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} |
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|
49 |
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Condition newCondition() { return new ConditionObject(); } |
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|
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private void readObject(ObjectInputStream s) throws IOException, ClassNotFoundException { |
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s.defaultReadObject(); |
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setState(0); // reset to unlocked state |
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} |
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} |
56 |
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|
57 |
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private final Sync sync = new Sync(); |
58 |
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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 |
29 |
> |
* 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 |
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*/ |
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static class Mutex extends AbstractQueuedSynchronizer { |
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public boolean isHeldExclusively() { return getState() == 1; } |
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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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} |
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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. |
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*/ |
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static class BooleanLatch extends AbstractQueuedSynchronizer { |
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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)); |
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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; } |
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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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/** |
82 |
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* A runnable calling lockInterruptibly that expects to be |
83 |
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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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*/ |
85 |
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class InterruptedLockRunnable implements Runnable { |
86 |
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final Mutex lock; |
87 |
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InterruptedLockRunnable(Mutex l) { lock = l; } |
88 |
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public void run() { |
89 |
< |
try { |
99 |
< |
lock.lockInterruptibly(); |
100 |
< |
threadShouldThrow(); |
101 |
< |
} catch(InterruptedException success){} |
85 |
> |
class InterruptedSyncRunnable extends CheckedInterruptedRunnable { |
86 |
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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 { |
89 |
> |
sync.acquireInterruptibly(1); |
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} |
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} |
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|
92 |
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|
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/** |
94 |
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* locking an unlocked lock succeeds |
94 |
> |
* isHeldExclusively is false upon construction |
95 |
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*/ |
96 |
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public void testLock() { |
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< |
Mutex rl = new Mutex(); |
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rl.lock(); |
111 |
< |
assertTrue(rl.isLocked()); |
112 |
< |
rl.unlock(); |
96 |
> |
public void testIsHeldExclusively() { |
97 |
> |
Mutex rl = new Mutex(); |
98 |
> |
assertFalse(rl.isHeldExclusively()); |
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} |
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|
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/** |
102 |
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* tryLock on an unlocked lock succeeds |
102 |
> |
* acquiring released sync succeeds |
103 |
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*/ |
104 |
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public void testTryLock() { |
105 |
< |
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 |
|
*/ |
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 |
+ |
* getFirstQueuedThread returns first waiting thread or null if none |
190 |
+ |
*/ |
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 |
+ |
* hasContended reports false if no thread has ever blocked, else true |
217 |
+ |
*/ |
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 |
+ |
* getExclusiveQueuedThreads includes waiting threads |
270 |
+ |
*/ |
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 |
+ |
* getSharedQueuedThreads does not include exclusively waiting threads |
298 |
+ |
*/ |
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, MEDIUM_DELAY_MS * 1000 * 1000); |
331 |
+ |
}}); |
332 |
+ |
|
333 |
+ |
t.start(); |
334 |
+ |
t.interrupt(); |
335 |
+ |
t.join(); |
336 |
+ |
} |
337 |
+ |
|
338 |
+ |
|
339 |
+ |
/** |
340 |
+ |
* TryAcquire on exclusively held sync fails |
341 |
+ |
*/ |
342 |
+ |
public void testTryAcquireWhenSynced() throws InterruptedException { |
343 |
+ |
final Mutex sync = new Mutex(); |
344 |
+ |
sync.acquire(1); |
345 |
+ |
Thread t = new Thread(new CheckedRunnable() { |
346 |
+ |
public void realRun() { |
347 |
+ |
threadAssertFalse(sync.tryAcquire(1)); |
348 |
+ |
}}); |
349 |
+ |
|
350 |
+ |
t.start(); |
351 |
+ |
t.join(); |
352 |
+ |
sync.release(1); |
353 |
+ |
} |
354 |
+ |
|
355 |
+ |
/** |
356 |
+ |
* tryAcquireNanos on an exclusively held sync times out |
357 |
+ |
*/ |
358 |
+ |
public void testAcquireNanos_Timeout() throws InterruptedException { |
359 |
+ |
final Mutex sync = new Mutex(); |
360 |
+ |
sync.acquire(1); |
361 |
+ |
Thread t = new Thread(new CheckedRunnable() { |
362 |
+ |
public void realRun() throws InterruptedException { |
363 |
+ |
threadAssertFalse(sync.tryAcquireNanos(1, 1000 * 1000)); |
364 |
+ |
}}); |
365 |
+ |
|
366 |
+ |
t.start(); |
367 |
+ |
t.join(); |
368 |
+ |
sync.release(1); |
369 |
+ |
} |
370 |
+ |
|
371 |
+ |
|
372 |
+ |
/** |
373 |
+ |
* getState is true when acquired and false when not |
374 |
+ |
*/ |
375 |
+ |
public void testGetState() throws InterruptedException { |
376 |
+ |
final Mutex sync = new Mutex(); |
377 |
+ |
sync.acquire(1); |
378 |
+ |
assertTrue(sync.isHeldExclusively()); |
379 |
+ |
sync.release(1); |
380 |
+ |
assertFalse(sync.isHeldExclusively()); |
381 |
+ |
Thread t = new Thread(new CheckedRunnable() { |
382 |
+ |
public void realRun() throws InterruptedException { |
383 |
+ |
sync.acquire(1); |
384 |
+ |
Thread.sleep(SMALL_DELAY_MS); |
385 |
+ |
sync.release(1); |
386 |
+ |
}}); |
387 |
+ |
|
388 |
+ |
t.start(); |
389 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
390 |
+ |
assertTrue(sync.isHeldExclusively()); |
391 |
+ |
t.join(); |
392 |
+ |
assertFalse(sync.isHeldExclusively()); |
393 |
+ |
} |
394 |
+ |
|
395 |
+ |
|
396 |
+ |
/** |
397 |
+ |
* acquireInterruptibly is interruptible. |
398 |
+ |
*/ |
399 |
+ |
public void testAcquireInterruptibly1() throws InterruptedException { |
400 |
+ |
final Mutex sync = new Mutex(); |
401 |
+ |
sync.acquire(1); |
402 |
+ |
Thread t = new Thread(new InterruptedSyncRunnable(sync)); |
403 |
+ |
|
404 |
+ |
t.start(); |
405 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
406 |
+ |
t.interrupt(); |
407 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
408 |
+ |
sync.release(1); |
409 |
+ |
t.join(); |
410 |
+ |
} |
411 |
+ |
|
412 |
+ |
/** |
413 |
+ |
* acquireInterruptibly succeeds when released, else is interruptible |
414 |
+ |
*/ |
415 |
+ |
public void testAcquireInterruptibly2() throws InterruptedException { |
416 |
+ |
final Mutex sync = new Mutex(); |
417 |
+ |
sync.acquireInterruptibly(1); |
418 |
+ |
Thread t = new Thread(new InterruptedSyncRunnable(sync)); |
419 |
+ |
t.start(); |
420 |
+ |
t.interrupt(); |
421 |
+ |
assertTrue(sync.isHeldExclusively()); |
422 |
+ |
t.join(); |
423 |
+ |
} |
424 |
+ |
|
425 |
+ |
/** |
426 |
+ |
* owns is true for a condition created by sync else false |
427 |
+ |
*/ |
428 |
+ |
public void testOwns() { |
429 |
+ |
final Mutex sync = new Mutex(); |
430 |
+ |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
431 |
+ |
final Mutex sync2 = new Mutex(); |
432 |
+ |
assertTrue(sync.owns(c)); |
433 |
+ |
assertFalse(sync2.owns(c)); |
434 |
+ |
} |
435 |
+ |
|
436 |
+ |
/** |
437 |
+ |
* Calling await without holding sync throws IllegalMonitorStateException |
438 |
+ |
*/ |
439 |
+ |
public void testAwait_IllegalMonitor() throws InterruptedException { |
440 |
+ |
final Mutex sync = new Mutex(); |
441 |
+ |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
442 |
+ |
try { |
443 |
+ |
c.await(); |
444 |
+ |
shouldThrow(); |
445 |
+ |
} catch (IllegalMonitorStateException success) {} |
446 |
+ |
} |
447 |
|
|
448 |
|
/** |
449 |
< |
* TryLock on a locked lock fails |
449 |
> |
* Calling signal without holding sync throws IllegalMonitorStateException |
450 |
|
*/ |
451 |
< |
public void testTryLockWhenLocked() { |
452 |
< |
final Mutex lock = new Mutex(); |
453 |
< |
lock.lock(); |
454 |
< |
Thread t = new Thread(new Runnable() { |
455 |
< |
public void run() { |
456 |
< |
threadAssertFalse(lock.tryLock()); |
457 |
< |
} |
458 |
< |
}); |
188 |
< |
try { |
189 |
< |
t.start(); |
190 |
< |
t.join(); |
191 |
< |
lock.unlock(); |
192 |
< |
} catch(Exception e){ |
193 |
< |
unexpectedException(); |
194 |
< |
} |
195 |
< |
} |
451 |
> |
public void testSignal_IllegalMonitor() { |
452 |
> |
final Mutex sync = new Mutex(); |
453 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
454 |
> |
try { |
455 |
> |
c.signal(); |
456 |
> |
shouldThrow(); |
457 |
> |
} catch (IllegalMonitorStateException success) {} |
458 |
> |
} |
459 |
|
|
460 |
|
/** |
461 |
< |
* Timed tryLock on a locked lock times out |
461 |
> |
* awaitNanos without a signal times out |
462 |
|
*/ |
463 |
< |
public void testTryLock_Timeout() { |
464 |
< |
final Mutex lock = new Mutex(); |
465 |
< |
lock.lock(); |
466 |
< |
Thread t = new Thread(new Runnable() { |
467 |
< |
public void run() { |
468 |
< |
try { |
469 |
< |
threadAssertFalse(lock.tryLock(1, TimeUnit.MILLISECONDS)); |
207 |
< |
} catch (Exception ex) { |
208 |
< |
threadUnexpectedException(); |
209 |
< |
} |
210 |
< |
} |
211 |
< |
}); |
212 |
< |
try { |
213 |
< |
t.start(); |
214 |
< |
t.join(); |
215 |
< |
lock.unlock(); |
216 |
< |
} catch(Exception e){ |
217 |
< |
unexpectedException(); |
218 |
< |
} |
219 |
< |
} |
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 |
< |
} |
463 |
> |
public void testAwaitNanos_Timeout() throws InterruptedException { |
464 |
> |
final Mutex sync = new Mutex(); |
465 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
466 |
> |
sync.acquire(1); |
467 |
> |
long t = c.awaitNanos(100); |
468 |
> |
assertTrue(t <= 0); |
469 |
> |
sync.release(1); |
470 |
|
} |
471 |
|
|
472 |
+ |
/** |
473 |
+ |
* Timed await without a signal times out |
474 |
+ |
*/ |
475 |
+ |
public void testAwait_Timeout() throws InterruptedException { |
476 |
+ |
final Mutex sync = new Mutex(); |
477 |
+ |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
478 |
+ |
sync.acquire(1); |
479 |
+ |
assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS)); |
480 |
+ |
sync.release(1); |
481 |
+ |
} |
482 |
|
|
483 |
|
/** |
484 |
< |
* lockInterruptibly is interruptible. |
484 |
> |
* awaitUntil without a signal times out |
485 |
|
*/ |
486 |
< |
public void testLockInterruptibly1() { |
487 |
< |
final Mutex lock = new Mutex(); |
488 |
< |
lock.lock(); |
489 |
< |
Thread t = new Thread(new InterruptedLockRunnable(lock)); |
490 |
< |
try { |
491 |
< |
t.start(); |
492 |
< |
t.interrupt(); |
493 |
< |
lock.unlock(); |
266 |
< |
t.join(); |
267 |
< |
} catch(Exception e){ |
268 |
< |
unexpectedException(); |
269 |
< |
} |
270 |
< |
} |
486 |
> |
public void testAwaitUntil_Timeout() throws InterruptedException { |
487 |
> |
final Mutex sync = new Mutex(); |
488 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
489 |
> |
sync.acquire(1); |
490 |
> |
java.util.Date d = new java.util.Date(); |
491 |
> |
assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10))); |
492 |
> |
sync.release(1); |
493 |
> |
} |
494 |
|
|
495 |
|
/** |
496 |
< |
* lockInterruptibly succeeds when unlocked, else is interruptible |
496 |
> |
* await returns when signalled |
497 |
|
*/ |
498 |
< |
public void testLockInterruptibly2() { |
499 |
< |
final Mutex lock = new Mutex(); |
500 |
< |
try { |
501 |
< |
lock.lockInterruptibly(); |
502 |
< |
} catch(Exception e) { |
503 |
< |
unexpectedException(); |
504 |
< |
} |
505 |
< |
Thread t = new Thread(new InterruptedLockRunnable(lock)); |
498 |
> |
public void testAwait() throws InterruptedException { |
499 |
> |
final Mutex sync = new Mutex(); |
500 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
501 |
> |
Thread t = new Thread(new CheckedRunnable() { |
502 |
> |
public void realRun() throws InterruptedException { |
503 |
> |
sync.acquire(1); |
504 |
> |
c.await(); |
505 |
> |
sync.release(1); |
506 |
> |
}}); |
507 |
> |
|
508 |
> |
t.start(); |
509 |
> |
Thread.sleep(SHORT_DELAY_MS); |
510 |
> |
sync.acquire(1); |
511 |
> |
c.signal(); |
512 |
> |
sync.release(1); |
513 |
> |
t.join(SHORT_DELAY_MS); |
514 |
> |
assertFalse(t.isAlive()); |
515 |
> |
} |
516 |
> |
|
517 |
> |
|
518 |
> |
|
519 |
> |
/** |
520 |
> |
* hasWaiters throws NPE if null |
521 |
> |
*/ |
522 |
> |
public void testHasWaitersNPE() { |
523 |
> |
final Mutex sync = new Mutex(); |
524 |
|
try { |
525 |
< |
t.start(); |
526 |
< |
t.interrupt(); |
527 |
< |
assertTrue(lock.isLocked()); |
287 |
< |
t.join(); |
288 |
< |
} catch(Exception e){ |
289 |
< |
unexpectedException(); |
290 |
< |
} |
525 |
> |
sync.hasWaiters(null); |
526 |
> |
shouldThrow(); |
527 |
> |
} catch (NullPointerException success) {} |
528 |
|
} |
529 |
|
|
530 |
|
/** |
531 |
< |
* Calling await without holding lock throws IllegalMonitorStateException |
531 |
> |
* getWaitQueueLength throws NPE if null |
532 |
|
*/ |
533 |
< |
public void testAwait_IllegalMonitor() { |
534 |
< |
final Mutex lock = new Mutex(); |
298 |
< |
final Condition c = lock.newCondition(); |
533 |
> |
public void testGetWaitQueueLengthNPE() { |
534 |
> |
final Mutex sync = new Mutex(); |
535 |
|
try { |
536 |
< |
c.await(); |
536 |
> |
sync.getWaitQueueLength(null); |
537 |
|
shouldThrow(); |
538 |
< |
} |
303 |
< |
catch (IllegalMonitorStateException success) { |
304 |
< |
} |
305 |
< |
catch (Exception ex) { |
306 |
< |
unexpectedException(); |
307 |
< |
} |
538 |
> |
} catch (NullPointerException success) {} |
539 |
|
} |
540 |
|
|
541 |
+ |
|
542 |
|
/** |
543 |
< |
* Calling signal without holding lock throws IllegalMonitorStateException |
543 |
> |
* getWaitingThreads throws NPE if null |
544 |
|
*/ |
545 |
< |
public void testSignal_IllegalMonitor() { |
546 |
< |
final Mutex lock = new Mutex(); |
315 |
< |
final Condition c = lock.newCondition(); |
545 |
> |
public void testGetWaitingThreadsNPE() { |
546 |
> |
final Mutex sync = new Mutex(); |
547 |
|
try { |
548 |
< |
c.signal(); |
548 |
> |
sync.getWaitingThreads(null); |
549 |
|
shouldThrow(); |
550 |
< |
} |
320 |
< |
catch (IllegalMonitorStateException success) { |
321 |
< |
} |
322 |
< |
catch (Exception ex) { |
323 |
< |
unexpectedException(); |
324 |
< |
} |
550 |
> |
} catch (NullPointerException success) {} |
551 |
|
} |
552 |
|
|
553 |
+ |
|
554 |
|
/** |
555 |
< |
* awaitNanos without a signal times out |
555 |
> |
* hasWaiters throws IAE if not owned |
556 |
|
*/ |
557 |
< |
public void testAwaitNanos_Timeout() { |
558 |
< |
final Mutex lock = new Mutex(); |
559 |
< |
final Condition c = lock.newCondition(); |
560 |
< |
try { |
561 |
< |
lock.lock(); |
562 |
< |
long t = c.awaitNanos(100); |
563 |
< |
assertTrue(t <= 0); |
564 |
< |
lock.unlock(); |
338 |
< |
} |
339 |
< |
catch (Exception ex) { |
340 |
< |
unexpectedException(); |
341 |
< |
} |
557 |
> |
public void testHasWaitersIAE() { |
558 |
> |
final Mutex sync = new Mutex(); |
559 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
560 |
> |
final Mutex sync2 = new Mutex(); |
561 |
> |
try { |
562 |
> |
sync2.hasWaiters(c); |
563 |
> |
shouldThrow(); |
564 |
> |
} catch (IllegalArgumentException success) {} |
565 |
|
} |
566 |
|
|
567 |
|
/** |
568 |
< |
* timed await without a signal times out |
568 |
> |
* hasWaiters throws IMSE if not synced |
569 |
|
*/ |
570 |
< |
public void testAwait_Timeout() { |
571 |
< |
final Mutex lock = new Mutex(); |
572 |
< |
final Condition c = lock.newCondition(); |
573 |
< |
try { |
574 |
< |
lock.lock(); |
575 |
< |
assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
576 |
< |
lock.unlock(); |
354 |
< |
} |
355 |
< |
catch (Exception ex) { |
356 |
< |
unexpectedException(); |
357 |
< |
} |
570 |
> |
public void testHasWaitersIMSE() { |
571 |
> |
final Mutex sync = new Mutex(); |
572 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
573 |
> |
try { |
574 |
> |
sync.hasWaiters(c); |
575 |
> |
shouldThrow(); |
576 |
> |
} catch (IllegalMonitorStateException success) {} |
577 |
|
} |
578 |
|
|
579 |
+ |
|
580 |
|
/** |
581 |
< |
* awaitUntil without a signal times out |
581 |
> |
* getWaitQueueLength throws IAE if not owned |
582 |
|
*/ |
583 |
< |
public void testAwaitUntil_Timeout() { |
584 |
< |
final Mutex lock = new Mutex(); |
585 |
< |
final Condition c = lock.newCondition(); |
586 |
< |
try { |
587 |
< |
lock.lock(); |
588 |
< |
java.util.Date d = new java.util.Date(); |
589 |
< |
assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10))); |
590 |
< |
lock.unlock(); |
371 |
< |
} |
372 |
< |
catch (Exception ex) { |
373 |
< |
unexpectedException(); |
374 |
< |
} |
583 |
> |
public void testGetWaitQueueLengthIAE() { |
584 |
> |
final Mutex sync = new Mutex(); |
585 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
586 |
> |
final Mutex sync2 = new Mutex(); |
587 |
> |
try { |
588 |
> |
sync2.getWaitQueueLength(c); |
589 |
> |
shouldThrow(); |
590 |
> |
} catch (IllegalArgumentException success) {} |
591 |
|
} |
592 |
|
|
593 |
|
/** |
594 |
< |
* await returns when signalled |
594 |
> |
* getWaitQueueLength throws IMSE if not synced |
595 |
|
*/ |
596 |
< |
public void testAwait() { |
597 |
< |
final Mutex lock = new Mutex(); |
598 |
< |
final Condition c = lock.newCondition(); |
599 |
< |
Thread t = new Thread(new Runnable() { |
600 |
< |
public void run() { |
601 |
< |
try { |
602 |
< |
lock.lock(); |
603 |
< |
c.await(); |
604 |
< |
lock.unlock(); |
605 |
< |
} |
606 |
< |
catch(InterruptedException e) { |
607 |
< |
threadUnexpectedException(); |
608 |
< |
} |
609 |
< |
} |
610 |
< |
}); |
611 |
< |
|
612 |
< |
try { |
613 |
< |
t.start(); |
614 |
< |
Thread.sleep(SHORT_DELAY_MS); |
615 |
< |
lock.lock(); |
616 |
< |
c.signal(); |
401 |
< |
lock.unlock(); |
402 |
< |
t.join(SHORT_DELAY_MS); |
403 |
< |
assertFalse(t.isAlive()); |
404 |
< |
} |
405 |
< |
catch (Exception ex) { |
406 |
< |
unexpectedException(); |
407 |
< |
} |
596 |
> |
public void testGetWaitQueueLengthIMSE() { |
597 |
> |
final Mutex sync = new Mutex(); |
598 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
599 |
> |
try { |
600 |
> |
sync.getWaitQueueLength(c); |
601 |
> |
shouldThrow(); |
602 |
> |
} catch (IllegalMonitorStateException success) {} |
603 |
> |
} |
604 |
> |
|
605 |
> |
|
606 |
> |
/** |
607 |
> |
* getWaitingThreads throws IAE if not owned |
608 |
> |
*/ |
609 |
> |
public void testGetWaitingThreadsIAE() { |
610 |
> |
final Mutex sync = new Mutex(); |
611 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
612 |
> |
final Mutex sync2 = new Mutex(); |
613 |
> |
try { |
614 |
> |
sync2.getWaitingThreads(c); |
615 |
> |
shouldThrow(); |
616 |
> |
} catch (IllegalArgumentException success) {} |
617 |
|
} |
618 |
< |
|
618 |
> |
|
619 |
> |
/** |
620 |
> |
* getWaitingThreads throws IMSE if not synced |
621 |
> |
*/ |
622 |
> |
public void testGetWaitingThreadsIMSE() { |
623 |
> |
final Mutex sync = new Mutex(); |
624 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
625 |
> |
try { |
626 |
> |
sync.getWaitingThreads(c); |
627 |
> |
shouldThrow(); |
628 |
> |
} catch (IllegalMonitorStateException success) {} |
629 |
> |
} |
630 |
> |
|
631 |
> |
|
632 |
> |
|
633 |
> |
/** |
634 |
> |
* hasWaiters returns true when a thread is waiting, else false |
635 |
> |
*/ |
636 |
> |
public void testHasWaiters() throws InterruptedException { |
637 |
> |
final Mutex sync = new Mutex(); |
638 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
639 |
> |
Thread t = new Thread(new CheckedRunnable() { |
640 |
> |
public void realRun() throws InterruptedException { |
641 |
> |
sync.acquire(1); |
642 |
> |
threadAssertFalse(sync.hasWaiters(c)); |
643 |
> |
threadAssertEquals(0, sync.getWaitQueueLength(c)); |
644 |
> |
c.await(); |
645 |
> |
sync.release(1); |
646 |
> |
}}); |
647 |
> |
|
648 |
> |
t.start(); |
649 |
> |
Thread.sleep(SHORT_DELAY_MS); |
650 |
> |
sync.acquire(1); |
651 |
> |
assertTrue(sync.hasWaiters(c)); |
652 |
> |
assertEquals(1, sync.getWaitQueueLength(c)); |
653 |
> |
c.signal(); |
654 |
> |
sync.release(1); |
655 |
> |
Thread.sleep(SHORT_DELAY_MS); |
656 |
> |
sync.acquire(1); |
657 |
> |
assertFalse(sync.hasWaiters(c)); |
658 |
> |
assertEquals(0, sync.getWaitQueueLength(c)); |
659 |
> |
sync.release(1); |
660 |
> |
t.join(SHORT_DELAY_MS); |
661 |
> |
assertFalse(t.isAlive()); |
662 |
> |
} |
663 |
> |
|
664 |
> |
/** |
665 |
> |
* getWaitQueueLength returns number of waiting threads |
666 |
> |
*/ |
667 |
> |
public void testGetWaitQueueLength() throws InterruptedException { |
668 |
> |
final Mutex sync = new Mutex(); |
669 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
670 |
> |
Thread t1 = new Thread(new CheckedRunnable() { |
671 |
> |
public void realRun() throws InterruptedException { |
672 |
> |
sync.acquire(1); |
673 |
> |
threadAssertFalse(sync.hasWaiters(c)); |
674 |
> |
threadAssertEquals(0, sync.getWaitQueueLength(c)); |
675 |
> |
c.await(); |
676 |
> |
sync.release(1); |
677 |
> |
}}); |
678 |
> |
|
679 |
> |
Thread t2 = new Thread(new CheckedRunnable() { |
680 |
> |
public void realRun() throws InterruptedException { |
681 |
> |
sync.acquire(1); |
682 |
> |
threadAssertTrue(sync.hasWaiters(c)); |
683 |
> |
threadAssertEquals(1, sync.getWaitQueueLength(c)); |
684 |
> |
c.await(); |
685 |
> |
sync.release(1); |
686 |
> |
}}); |
687 |
> |
|
688 |
> |
t1.start(); |
689 |
> |
Thread.sleep(SHORT_DELAY_MS); |
690 |
> |
t2.start(); |
691 |
> |
Thread.sleep(SHORT_DELAY_MS); |
692 |
> |
sync.acquire(1); |
693 |
> |
assertTrue(sync.hasWaiters(c)); |
694 |
> |
assertEquals(2, sync.getWaitQueueLength(c)); |
695 |
> |
c.signalAll(); |
696 |
> |
sync.release(1); |
697 |
> |
Thread.sleep(SHORT_DELAY_MS); |
698 |
> |
sync.acquire(1); |
699 |
> |
assertFalse(sync.hasWaiters(c)); |
700 |
> |
assertEquals(0, sync.getWaitQueueLength(c)); |
701 |
> |
sync.release(1); |
702 |
> |
t1.join(SHORT_DELAY_MS); |
703 |
> |
t2.join(SHORT_DELAY_MS); |
704 |
> |
assertFalse(t1.isAlive()); |
705 |
> |
assertFalse(t2.isAlive()); |
706 |
> |
} |
707 |
> |
|
708 |
> |
/** |
709 |
> |
* getWaitingThreads returns only and all waiting threads |
710 |
> |
*/ |
711 |
> |
public void testGetWaitingThreads() throws InterruptedException { |
712 |
> |
final Mutex sync = new Mutex(); |
713 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
714 |
> |
Thread t1 = new Thread(new CheckedRunnable() { |
715 |
> |
public void realRun() throws InterruptedException { |
716 |
> |
sync.acquire(1); |
717 |
> |
threadAssertTrue(sync.getWaitingThreads(c).isEmpty()); |
718 |
> |
c.await(); |
719 |
> |
sync.release(1); |
720 |
> |
}}); |
721 |
> |
|
722 |
> |
Thread t2 = new Thread(new CheckedRunnable() { |
723 |
> |
public void realRun() throws InterruptedException { |
724 |
> |
sync.acquire(1); |
725 |
> |
threadAssertFalse(sync.getWaitingThreads(c).isEmpty()); |
726 |
> |
c.await(); |
727 |
> |
sync.release(1); |
728 |
> |
}}); |
729 |
> |
|
730 |
> |
sync.acquire(1); |
731 |
> |
assertTrue(sync.getWaitingThreads(c).isEmpty()); |
732 |
> |
sync.release(1); |
733 |
> |
t1.start(); |
734 |
> |
Thread.sleep(SHORT_DELAY_MS); |
735 |
> |
t2.start(); |
736 |
> |
Thread.sleep(SHORT_DELAY_MS); |
737 |
> |
sync.acquire(1); |
738 |
> |
assertTrue(sync.hasWaiters(c)); |
739 |
> |
assertTrue(sync.getWaitingThreads(c).contains(t1)); |
740 |
> |
assertTrue(sync.getWaitingThreads(c).contains(t2)); |
741 |
> |
c.signalAll(); |
742 |
> |
sync.release(1); |
743 |
> |
Thread.sleep(SHORT_DELAY_MS); |
744 |
> |
sync.acquire(1); |
745 |
> |
assertFalse(sync.hasWaiters(c)); |
746 |
> |
assertTrue(sync.getWaitingThreads(c).isEmpty()); |
747 |
> |
sync.release(1); |
748 |
> |
t1.join(SHORT_DELAY_MS); |
749 |
> |
t2.join(SHORT_DELAY_MS); |
750 |
> |
assertFalse(t1.isAlive()); |
751 |
> |
assertFalse(t2.isAlive()); |
752 |
> |
} |
753 |
> |
|
754 |
> |
|
755 |
> |
|
756 |
> |
/** |
757 |
> |
* awaitUninterruptibly doesn't abort on interrupt |
758 |
> |
*/ |
759 |
> |
public void testAwaitUninterruptibly() throws InterruptedException { |
760 |
> |
final Mutex sync = new Mutex(); |
761 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
762 |
> |
Thread t = new Thread(new CheckedRunnable() { |
763 |
> |
public void realRun() { |
764 |
> |
sync.acquire(1); |
765 |
> |
c.awaitUninterruptibly(); |
766 |
> |
sync.release(1); |
767 |
> |
}}); |
768 |
> |
|
769 |
> |
t.start(); |
770 |
> |
Thread.sleep(SHORT_DELAY_MS); |
771 |
> |
t.interrupt(); |
772 |
> |
sync.acquire(1); |
773 |
> |
c.signal(); |
774 |
> |
sync.release(1); |
775 |
> |
t.join(SHORT_DELAY_MS); |
776 |
> |
assertFalse(t.isAlive()); |
777 |
> |
} |
778 |
> |
|
779 |
> |
/** |
780 |
> |
* await is interruptible |
781 |
> |
*/ |
782 |
> |
public void testAwait_Interrupt() throws InterruptedException { |
783 |
> |
final Mutex sync = new Mutex(); |
784 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
785 |
> |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
786 |
> |
public void realRun() throws InterruptedException { |
787 |
> |
sync.acquire(1); |
788 |
> |
c.await(); |
789 |
> |
}}); |
790 |
> |
|
791 |
> |
t.start(); |
792 |
> |
Thread.sleep(SHORT_DELAY_MS); |
793 |
> |
t.interrupt(); |
794 |
> |
t.join(SHORT_DELAY_MS); |
795 |
> |
assertFalse(t.isAlive()); |
796 |
> |
} |
797 |
> |
|
798 |
> |
/** |
799 |
> |
* awaitNanos is interruptible |
800 |
> |
*/ |
801 |
> |
public void testAwaitNanos_Interrupt() throws InterruptedException { |
802 |
> |
final Mutex sync = new Mutex(); |
803 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
804 |
> |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
805 |
> |
public void realRun() throws InterruptedException { |
806 |
> |
sync.acquire(1); |
807 |
> |
c.awaitNanos(1000 * 1000 * 1000); // 1 sec |
808 |
> |
}}); |
809 |
> |
|
810 |
> |
t.start(); |
811 |
> |
Thread.sleep(SHORT_DELAY_MS); |
812 |
> |
t.interrupt(); |
813 |
> |
t.join(SHORT_DELAY_MS); |
814 |
> |
assertFalse(t.isAlive()); |
815 |
> |
} |
816 |
> |
|
817 |
> |
/** |
818 |
> |
* awaitUntil is interruptible |
819 |
> |
*/ |
820 |
> |
public void testAwaitUntil_Interrupt() throws InterruptedException { |
821 |
> |
final Mutex sync = new Mutex(); |
822 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
823 |
> |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
824 |
> |
public void realRun() throws InterruptedException { |
825 |
> |
sync.acquire(1); |
826 |
> |
java.util.Date d = new java.util.Date(); |
827 |
> |
c.awaitUntil(new java.util.Date(d.getTime() + 10000)); |
828 |
> |
}}); |
829 |
> |
|
830 |
> |
t.start(); |
831 |
> |
Thread.sleep(SHORT_DELAY_MS); |
832 |
> |
t.interrupt(); |
833 |
> |
t.join(SHORT_DELAY_MS); |
834 |
> |
assertFalse(t.isAlive()); |
835 |
> |
} |
836 |
> |
|
837 |
> |
/** |
838 |
> |
* signalAll wakes up all threads |
839 |
> |
*/ |
840 |
> |
public void testSignalAll() throws InterruptedException { |
841 |
> |
final Mutex sync = new Mutex(); |
842 |
> |
final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition(); |
843 |
> |
Thread t1 = new Thread(new CheckedRunnable() { |
844 |
> |
public void realRun() throws InterruptedException { |
845 |
> |
sync.acquire(1); |
846 |
> |
c.await(); |
847 |
> |
sync.release(1); |
848 |
> |
}}); |
849 |
> |
|
850 |
> |
Thread t2 = new Thread(new CheckedRunnable() { |
851 |
> |
public void realRun() throws InterruptedException { |
852 |
> |
sync.acquire(1); |
853 |
> |
c.await(); |
854 |
> |
sync.release(1); |
855 |
> |
}}); |
856 |
> |
|
857 |
> |
t1.start(); |
858 |
> |
t2.start(); |
859 |
> |
Thread.sleep(SHORT_DELAY_MS); |
860 |
> |
sync.acquire(1); |
861 |
> |
c.signalAll(); |
862 |
> |
sync.release(1); |
863 |
> |
t1.join(SHORT_DELAY_MS); |
864 |
> |
t2.join(SHORT_DELAY_MS); |
865 |
> |
assertFalse(t1.isAlive()); |
866 |
> |
assertFalse(t2.isAlive()); |
867 |
> |
} |
868 |
> |
|
869 |
> |
|
870 |
> |
/** |
871 |
> |
* toString indicates current state |
872 |
> |
*/ |
873 |
> |
public void testToString() { |
874 |
> |
Mutex sync = new Mutex(); |
875 |
> |
String us = sync.toString(); |
876 |
> |
assertTrue(us.indexOf("State = 0") >= 0); |
877 |
> |
sync.acquire(1); |
878 |
> |
String ls = sync.toString(); |
879 |
> |
assertTrue(ls.indexOf("State = 1") >= 0); |
880 |
> |
} |
881 |
> |
|
882 |
> |
/** |
883 |
> |
* A serialized AQS deserializes with current state |
884 |
> |
*/ |
885 |
> |
public void testSerialization() throws Exception { |
886 |
> |
Mutex l = new Mutex(); |
887 |
> |
l.acquire(1); |
888 |
> |
assertTrue(l.isHeldExclusively()); |
889 |
> |
|
890 |
> |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
891 |
> |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
892 |
> |
out.writeObject(l); |
893 |
> |
out.close(); |
894 |
> |
|
895 |
> |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
896 |
> |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
897 |
> |
Mutex r = (Mutex) in.readObject(); |
898 |
> |
assertTrue(r.isHeldExclusively()); |
899 |
> |
} |
900 |
> |
|
901 |
> |
|
902 |
> |
/** |
903 |
> |
* tryReleaseShared setting state changes getState |
904 |
> |
*/ |
905 |
> |
public void testGetStateWithReleaseShared() { |
906 |
> |
final BooleanLatch l = new BooleanLatch(); |
907 |
> |
assertFalse(l.isSignalled()); |
908 |
> |
l.releaseShared(0); |
909 |
> |
assertTrue(l.isSignalled()); |
910 |
> |
} |
911 |
> |
|
912 |
> |
/** |
913 |
> |
* releaseShared has no effect when already signalled |
914 |
> |
*/ |
915 |
> |
public void testReleaseShared() { |
916 |
> |
final BooleanLatch l = new BooleanLatch(); |
917 |
> |
assertFalse(l.isSignalled()); |
918 |
> |
l.releaseShared(0); |
919 |
> |
assertTrue(l.isSignalled()); |
920 |
> |
l.releaseShared(0); |
921 |
> |
assertTrue(l.isSignalled()); |
922 |
> |
} |
923 |
> |
|
924 |
> |
/** |
925 |
> |
* acquireSharedInterruptibly returns after release, but not before |
926 |
> |
*/ |
927 |
> |
public void testAcquireSharedInterruptibly() throws InterruptedException { |
928 |
> |
final BooleanLatch l = new BooleanLatch(); |
929 |
> |
|
930 |
> |
Thread t = new Thread(new CheckedRunnable() { |
931 |
> |
public void realRun() throws InterruptedException { |
932 |
> |
threadAssertFalse(l.isSignalled()); |
933 |
> |
l.acquireSharedInterruptibly(0); |
934 |
> |
threadAssertTrue(l.isSignalled()); |
935 |
> |
}}); |
936 |
> |
|
937 |
> |
t.start(); |
938 |
> |
assertFalse(l.isSignalled()); |
939 |
> |
Thread.sleep(SHORT_DELAY_MS); |
940 |
> |
l.releaseShared(0); |
941 |
> |
assertTrue(l.isSignalled()); |
942 |
> |
t.join(); |
943 |
> |
} |
944 |
> |
|
945 |
> |
|
946 |
> |
/** |
947 |
> |
* acquireSharedTimed returns after release |
948 |
> |
*/ |
949 |
> |
public void testAsquireSharedTimed() throws InterruptedException { |
950 |
> |
final BooleanLatch l = new BooleanLatch(); |
951 |
> |
|
952 |
> |
Thread t = new Thread(new CheckedRunnable() { |
953 |
> |
public void realRun() throws InterruptedException { |
954 |
> |
threadAssertFalse(l.isSignalled()); |
955 |
> |
threadAssertTrue(l.tryAcquireSharedNanos(0, MEDIUM_DELAY_MS* 1000 * 1000)); |
956 |
> |
threadAssertTrue(l.isSignalled()); |
957 |
> |
}}); |
958 |
> |
|
959 |
> |
t.start(); |
960 |
> |
assertFalse(l.isSignalled()); |
961 |
> |
Thread.sleep(SHORT_DELAY_MS); |
962 |
> |
l.releaseShared(0); |
963 |
> |
assertTrue(l.isSignalled()); |
964 |
> |
t.join(); |
965 |
> |
} |
966 |
> |
|
967 |
> |
/** |
968 |
> |
* acquireSharedInterruptibly throws IE if interrupted before released |
969 |
> |
*/ |
970 |
> |
public void testAcquireSharedInterruptibly_InterruptedException() throws InterruptedException { |
971 |
> |
final BooleanLatch l = new BooleanLatch(); |
972 |
> |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
973 |
> |
public void realRun() throws InterruptedException { |
974 |
> |
threadAssertFalse(l.isSignalled()); |
975 |
> |
l.acquireSharedInterruptibly(0); |
976 |
> |
}}); |
977 |
> |
|
978 |
> |
t.start(); |
979 |
> |
assertFalse(l.isSignalled()); |
980 |
> |
t.interrupt(); |
981 |
> |
t.join(); |
982 |
> |
} |
983 |
> |
|
984 |
> |
/** |
985 |
> |
* acquireSharedTimed throws IE if interrupted before released |
986 |
> |
*/ |
987 |
> |
public void testAcquireSharedNanos_InterruptedException() throws InterruptedException { |
988 |
> |
final BooleanLatch l = new BooleanLatch(); |
989 |
> |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
990 |
> |
public void realRun() throws InterruptedException { |
991 |
> |
threadAssertFalse(l.isSignalled()); |
992 |
> |
l.tryAcquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000); |
993 |
> |
}}); |
994 |
> |
|
995 |
> |
t.start(); |
996 |
> |
Thread.sleep(SHORT_DELAY_MS); |
997 |
> |
assertFalse(l.isSignalled()); |
998 |
> |
t.interrupt(); |
999 |
> |
t.join(); |
1000 |
> |
} |
1001 |
> |
|
1002 |
> |
/** |
1003 |
> |
* acquireSharedTimed times out if not released before timeout |
1004 |
> |
*/ |
1005 |
> |
public void testAcquireSharedNanos_Timeout() throws InterruptedException { |
1006 |
> |
final BooleanLatch l = new BooleanLatch(); |
1007 |
> |
Thread t = new Thread(new CheckedRunnable() { |
1008 |
> |
public void realRun() throws InterruptedException { |
1009 |
> |
threadAssertFalse(l.isSignalled()); |
1010 |
> |
threadAssertFalse(l.tryAcquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000)); |
1011 |
> |
}}); |
1012 |
> |
|
1013 |
> |
t.start(); |
1014 |
> |
Thread.sleep(SHORT_DELAY_MS); |
1015 |
> |
assertFalse(l.isSignalled()); |
1016 |
> |
t.join(); |
1017 |
> |
} |
1018 |
> |
|
1019 |
|
} |