| Methods Summary |
|---|
| public static void | main(java.lang.String[] args)
junit.textui.TestRunner.run (suite());
|
| public static junit.framework.Test | suite()
return new TestSuite(ReentrantReadWriteLockTest.class);
|
| public void | testAwait()await returns when signalled
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
final Condition c = lock.writeLock().newCondition();
Thread t = new Thread(new Runnable() {
public void run() {
try {
lock.writeLock().lock();
c.await();
lock.writeLock().unlock();
}
catch(InterruptedException e) {
threadUnexpectedException();
}
}
});
try {
t.start();
Thread.sleep(SHORT_DELAY_MS);
lock.writeLock().lock();
c.signal();
lock.writeLock().unlock();
t.join(SHORT_DELAY_MS);
assertFalse(t.isAlive());
}
catch (Exception ex) {
unexpectedException();
}
|
| public void | testAwaitNanos_Interrupt()awaitNanos is interruptible
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
final Condition c = lock.writeLock().newCondition();
Thread t = new Thread(new Runnable() {
public void run() {
try {
lock.writeLock().lock();
c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000);
lock.writeLock().unlock();
threadShouldThrow();
}
catch(InterruptedException success) {
}
}
});
try {
t.start();
Thread.sleep(SHORT_DELAY_MS);
t.interrupt();
t.join(SHORT_DELAY_MS);
assertFalse(t.isAlive());
}
catch (Exception ex) {
unexpectedException();
}
|
| public void | testAwaitNanos_Timeout()awaitNanos without a signal times out
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
final Condition c = lock.writeLock().newCondition();
try {
lock.writeLock().lock();
long t = c.awaitNanos(100);
assertTrue(t <= 0);
lock.writeLock().unlock();
}
catch (Exception ex) {
unexpectedException();
}
|
| public void | testAwaitUninterruptibly()awaitUninterruptibly doesn't abort on interrupt
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
final Condition c = lock.writeLock().newCondition();
Thread t = new Thread(new Runnable() {
public void run() {
lock.writeLock().lock();
c.awaitUninterruptibly();
lock.writeLock().unlock();
}
});
try {
t.start();
Thread.sleep(SHORT_DELAY_MS);
t.interrupt();
lock.writeLock().lock();
c.signal();
lock.writeLock().unlock();
assert(t.isInterrupted());
t.join(SHORT_DELAY_MS);
assertFalse(t.isAlive());
}
catch (Exception ex) {
unexpectedException();
}
|
| public void | testAwaitUntil_Interrupt()awaitUntil is interruptible
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
final Condition c = lock.writeLock().newCondition();
Thread t = new Thread(new Runnable() {
public void run() {
try {
lock.writeLock().lock();
java.util.Date d = new java.util.Date();
c.awaitUntil(new java.util.Date(d.getTime() + 10000));
lock.writeLock().unlock();
threadShouldThrow();
}
catch(InterruptedException success) {
}
}
});
try {
t.start();
Thread.sleep(SHORT_DELAY_MS);
t.interrupt();
t.join(SHORT_DELAY_MS);
assertFalse(t.isAlive());
}
catch (Exception ex) {
unexpectedException();
}
|
| public void | testAwaitUntil_Timeout()awaitUntil without a signal times out
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
final Condition c = lock.writeLock().newCondition();
try {
lock.writeLock().lock();
java.util.Date d = new java.util.Date();
assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
lock.writeLock().unlock();
}
catch (Exception ex) {
unexpectedException();
}
|
| public void | testAwait_IllegalMonitor()Calling await without holding lock throws IllegalMonitorStateException
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
final Condition c = lock.writeLock().newCondition();
try {
c.await();
shouldThrow();
}
catch (IllegalMonitorStateException success) {
}
catch (Exception ex) {
shouldThrow();
}
|
| public void | testAwait_Interrupt()await is interruptible
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
final Condition c = lock.writeLock().newCondition();
Thread t = new Thread(new Runnable() {
public void run() {
try {
lock.writeLock().lock();
c.await();
lock.writeLock().unlock();
threadShouldThrow();
}
catch(InterruptedException success) {
}
}
});
try {
t.start();
Thread.sleep(SHORT_DELAY_MS);
t.interrupt();
t.join(SHORT_DELAY_MS);
assertFalse(t.isAlive());
}
catch (Exception ex) {
unexpectedException();
}
|
| public void | testAwait_Timeout()timed await without a signal times out
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
final Condition c = lock.writeLock().newCondition();
try {
lock.writeLock().lock();
assertFalse(c.await(10, TimeUnit.MILLISECONDS));
lock.writeLock().unlock();
}
catch (Exception ex) {
unexpectedException();
}
|
| public void | testConstructor()Constructor sets given fairness, and is in unlocked state
ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
assertFalse(rl.isFair());
assertFalse(rl.isWriteLocked());
assertEquals(0, rl.getReadLockCount());
ReentrantReadWriteLock r2 = new ReentrantReadWriteLock(true);
assertTrue(r2.isFair());
assertFalse(r2.isWriteLocked());
assertEquals(0, r2.getReadLockCount());
|
| public void | testFairLock()locking an unlocked fair lock succeeds
ReentrantReadWriteLock rl = new ReentrantReadWriteLock(true);
rl.writeLock().lock();
assertTrue(rl.isWriteLocked());
assertTrue(rl.isWriteLockedByCurrentThread());
assertEquals(0, rl.getReadLockCount());
rl.writeLock().unlock();
assertFalse(rl.isWriteLocked());
assertFalse(rl.isWriteLockedByCurrentThread());
assertEquals(0, rl.getReadLockCount());
rl.readLock().lock();
assertFalse(rl.isWriteLocked());
assertFalse(rl.isWriteLockedByCurrentThread());
assertEquals(1, rl.getReadLockCount());
rl.readLock().unlock();
assertFalse(rl.isWriteLocked());
assertFalse(rl.isWriteLockedByCurrentThread());
assertEquals(0, rl.getReadLockCount());
|
| public void | testGetHoldCount()getWriteHoldCount returns number of recursive holds
ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
for(int i = 1; i <= SIZE; i++) {
lock.writeLock().lock();
assertEquals(i,lock.getWriteHoldCount());
}
for(int i = SIZE; i > 0; i--) {
lock.writeLock().unlock();
assertEquals(i-1,lock.getWriteHoldCount());
}
|
| public void | testGetQueueLength()getQueueLength reports number of waiting threads
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
Thread t1 = new Thread(new InterruptedLockRunnable(lock));
Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
try {
assertEquals(0, lock.getQueueLength());
lock.writeLock().lock();
t1.start();
Thread.sleep(SHORT_DELAY_MS);
assertEquals(1, lock.getQueueLength());
t2.start();
Thread.sleep(SHORT_DELAY_MS);
assertEquals(2, lock.getQueueLength());
t1.interrupt();
Thread.sleep(SHORT_DELAY_MS);
assertEquals(1, lock.getQueueLength());
lock.writeLock().unlock();
Thread.sleep(SHORT_DELAY_MS);
assertEquals(0, lock.getQueueLength());
t1.join();
t2.join();
} catch(Exception e){
unexpectedException();
}
|
| public void | testGetQueuedThreads()getQueuedThreads includes waiting threads
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
Thread t1 = new Thread(new InterruptedLockRunnable(lock));
Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
try {
assertTrue(lock.getQueuedThreads().isEmpty());
lock.writeLock().lock();
assertTrue(lock.getQueuedThreads().isEmpty());
t1.start();
Thread.sleep(SHORT_DELAY_MS);
assertTrue(lock.getQueuedThreads().contains(t1));
t2.start();
Thread.sleep(SHORT_DELAY_MS);
assertTrue(lock.getQueuedThreads().contains(t1));
assertTrue(lock.getQueuedThreads().contains(t2));
t1.interrupt();
Thread.sleep(SHORT_DELAY_MS);
assertFalse(lock.getQueuedThreads().contains(t1));
assertTrue(lock.getQueuedThreads().contains(t2));
lock.writeLock().unlock();
Thread.sleep(SHORT_DELAY_MS);
assertTrue(lock.getQueuedThreads().isEmpty());
t1.join();
t2.join();
} catch(Exception e){
unexpectedException();
}
|
| public void | testGetWaitQueueLength()getWaitQueueLength returns number of waiting threads
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
final Condition c = (lock.writeLock().newCondition());
Thread t = new Thread(new Runnable() {
public void run() {
try {
lock.writeLock().lock();
threadAssertFalse(lock.hasWaiters(c));
threadAssertEquals(0, lock.getWaitQueueLength(c));
c.await();
lock.writeLock().unlock();
}
catch(InterruptedException e) {
threadUnexpectedException();
}
}
});
try {
t.start();
Thread.sleep(SHORT_DELAY_MS);
lock.writeLock().lock();
assertTrue(lock.hasWaiters(c));
assertEquals(1, lock.getWaitQueueLength(c));
c.signal();
lock.writeLock().unlock();
Thread.sleep(SHORT_DELAY_MS);
lock.writeLock().lock();
assertFalse(lock.hasWaiters(c));
assertEquals(0, lock.getWaitQueueLength(c));
lock.writeLock().unlock();
t.join(SHORT_DELAY_MS);
assertFalse(t.isAlive());
}
catch (Exception ex) {
unexpectedException();
}
|
| public void | testGetWaitQueueLengthIAE()getWaitQueueLength throws IAE if not owned
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
final Condition c = (lock.writeLock().newCondition());
final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
try {
lock2.getWaitQueueLength(c);
shouldThrow();
} catch (IllegalArgumentException success) {
} catch (Exception ex) {
unexpectedException();
}
|
| public void | testGetWaitQueueLengthIMSE()getWaitQueueLength throws IMSE if not locked
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
final Condition c = (lock.writeLock().newCondition());
try {
lock.getWaitQueueLength(c);
shouldThrow();
} catch (IllegalMonitorStateException success) {
} catch (Exception ex) {
unexpectedException();
}
|
| public void | testGetWaitQueueLengthNPE()getWaitQueueLength throws NPE if null
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
try {
lock.getWaitQueueLength(null);
shouldThrow();
} catch (NullPointerException success) {
} catch (Exception ex) {
unexpectedException();
}
|
| public void | testGetWaitingThreads()getWaitingThreads returns only and all waiting threads
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
final Condition c = lock.writeLock().newCondition();
Thread t1 = new Thread(new Runnable() {
public void run() {
try {
lock.writeLock().lock();
threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
c.await();
lock.writeLock().unlock();
}
catch(InterruptedException e) {
threadUnexpectedException();
}
}
});
Thread t2 = new Thread(new Runnable() {
public void run() {
try {
lock.writeLock().lock();
threadAssertFalse(lock.getWaitingThreads(c).isEmpty());
c.await();
lock.writeLock().unlock();
}
catch(InterruptedException e) {
threadUnexpectedException();
}
}
});
try {
lock.writeLock().lock();
assertTrue(lock.getWaitingThreads(c).isEmpty());
lock.writeLock().unlock();
t1.start();
Thread.sleep(SHORT_DELAY_MS);
t2.start();
Thread.sleep(SHORT_DELAY_MS);
lock.writeLock().lock();
assertTrue(lock.hasWaiters(c));
assertTrue(lock.getWaitingThreads(c).contains(t1));
assertTrue(lock.getWaitingThreads(c).contains(t2));
c.signalAll();
lock.writeLock().unlock();
Thread.sleep(SHORT_DELAY_MS);
lock.writeLock().lock();
assertFalse(lock.hasWaiters(c));
assertTrue(lock.getWaitingThreads(c).isEmpty());
lock.writeLock().unlock();
t1.join(SHORT_DELAY_MS);
t2.join(SHORT_DELAY_MS);
assertFalse(t1.isAlive());
assertFalse(t2.isAlive());
}
catch (Exception ex) {
unexpectedException();
}
|
| public void | testGetWaitingThreadsIAE()getWaitingThreads throws IAE if not owned
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
final Condition c = (lock.writeLock().newCondition());
final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock();
try {
lock2.getWaitingThreads(c);
shouldThrow();
} catch (IllegalArgumentException success) {
} catch (Exception ex) {
unexpectedException();
}
|
| public void | testGetWaitingThreadsIMSE()getWaitingThreads throws IMSE if not locked
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
final Condition c = (lock.writeLock().newCondition());
try {
lock.getWaitingThreads(c);
shouldThrow();
} catch (IllegalMonitorStateException success) {
} catch (Exception ex) {
unexpectedException();
}
|
| public void | testGetWaitingThreadsNPE()getWaitingThreads throws NPE if null
final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
try {
lock.getWaitingThreads(null);
shouldThrow();
} catch (NullPointerException success) {
} catch (Exception ex) {
unexpectedException();
}
|
| public void | testHasQueuedThread()hasQueuedThread reports whether a thread is queued.
final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
Thread t1 = new Thread(new InterruptedLockRunnable(sync));
Thread t2 = new Thread(new InterruptibleLockRunnable(sync));
try {
assertFalse(sync.hasQueuedThread(t1));
assertFalse(sync.hasQueuedThread(t2));
sync.writeLock().lock();
t1.start();
Thread.sleep(SHORT_DELAY_MS);
assertTrue(sync.hasQueuedThread(t1));
t2.start();
Thread.sleep(SHORT_DELAY_MS);
assertTrue(sync.hasQueuedThread(t1));
assertTrue(sync.hasQueuedThread(t2));
t1.interrupt();
Thread.sleep(SHORT_DELAY_MS);
assertFalse(sync.hasQueuedThread(t1));
assertTrue(sync.hasQueuedThread(t2));
sync.writeLock().unlock();
Thread.sleep(SHORT_DELAY_MS);
assertFalse(sync.hasQueuedThread(t1));
Thread.sleep(SHORT_DELAY_MS);
assertFalse(sync.hasQueuedThread(t2));
t1.join();
t2.join();
} catch(Exception e){
unexpectedException();
}
|
| public void | testHasQueuedThreadNPE()hasQueuedThread(null) throws NPE
final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
try {
sync.hasQueuedThread(null);
shouldThrow();
} catch (NullPointerException success) {
}
|
| public void | testHasWaiters()hasWaiters returns true when a thread is waiting, else false
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
final Condition c = (lock.writeLock().newCondition());
Thread t = new Thread(new Runnable() {
public void run() {
try {
lock.writeLock().lock();
threadAssertFalse(lock.hasWaiters(c));
threadAssertEquals(0, lock.getWaitQueueLength(c));
c.await();
lock.writeLock().unlock();
}
catch(InterruptedException e) {
threadUnexpectedException();
}
}
});
try {
t.start();
Thread.sleep(SHORT_DELAY_MS);
lock.writeLock().lock();
assertTrue(lock.hasWaiters(c));
assertEquals(1, lock.getWaitQueueLength(c));
c.signal();
lock.writeLock().unlock();
Thread.sleep(SHORT_DELAY_MS);
lock.writeLock().lock();
assertFalse(lock.hasWaiters(c));
assertEquals(0, lock.getWaitQueueLength(c));
lock.writeLock().unlock();
t.join(SHORT_DELAY_MS);
assertFalse(t.isAlive());
}
catch (Exception ex) {
unexpectedException();
}
|
| public void | testHasWaitersIAE()hasWaiters throws IAE if not owned
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
final Condition c = (lock.writeLock().newCondition());
final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
try {
lock2.hasWaiters(c);
shouldThrow();
} catch (IllegalArgumentException success) {
} catch (Exception ex) {
unexpectedException();
}
|
| public void | testHasWaitersIMSE()hasWaiters throws IMSE if not locked
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
final Condition c = (lock.writeLock().newCondition());
try {
lock.hasWaiters(c);
shouldThrow();
} catch (IllegalMonitorStateException success) {
} catch (Exception ex) {
unexpectedException();
}
|
| public void | testHasWaitersNPE()hasWaiters throws NPE if null
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
try {
lock.hasWaiters(null);
shouldThrow();
} catch (NullPointerException success) {
} catch (Exception ex) {
unexpectedException();
}
|
| public void | testLock()write-locking and read-locking an unlocked lock succeed
ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
rl.writeLock().lock();
assertTrue(rl.isWriteLocked());
assertTrue(rl.isWriteLockedByCurrentThread());
assertEquals(0, rl.getReadLockCount());
rl.writeLock().unlock();
assertFalse(rl.isWriteLocked());
assertFalse(rl.isWriteLockedByCurrentThread());
assertEquals(0, rl.getReadLockCount());
rl.readLock().lock();
assertFalse(rl.isWriteLocked());
assertFalse(rl.isWriteLockedByCurrentThread());
assertEquals(1, rl.getReadLockCount());
rl.readLock().unlock();
assertFalse(rl.isWriteLocked());
assertFalse(rl.isWriteLockedByCurrentThread());
assertEquals(0, rl.getReadLockCount());
|
| public void | testMultipleReadLocks()Multiple threads can hold a read lock when not write-locked
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
lock.readLock().lock();
Thread t = new Thread(new Runnable() {
public void run() {
threadAssertTrue(lock.readLock().tryLock());
lock.readLock().unlock();
}
});
try {
t.start();
t.join();
lock.readLock().unlock();
} catch(Exception e){
unexpectedException();
}
|
| public void | testReadAfterWriteLock()Readlocks succeed after a writing thread unlocks
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
lock.writeLock().lock();
Thread t1 = new Thread(new Runnable() {
public void run() {
lock.readLock().lock();
lock.readLock().unlock();
}
});
Thread t2 = new Thread(new Runnable() {
public void run() {
lock.readLock().lock();
lock.readLock().unlock();
}
});
try {
t1.start();
t2.start();
Thread.sleep(SHORT_DELAY_MS);
lock.writeLock().unlock();
t1.join(MEDIUM_DELAY_MS);
t2.join(MEDIUM_DELAY_MS);
assertTrue(!t1.isAlive());
assertTrue(!t2.isAlive());
} catch(Exception e){
unexpectedException();
}
|
| public void | testReadLockInterruptibly()read lockInterruptibly succeeds if lock free else is interruptible
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
try {
lock.writeLock().lockInterruptibly();
} catch(Exception e) {
unexpectedException();
}
Thread t = new Thread(new Runnable() {
public void run() {
try {
lock.readLock().lockInterruptibly();
threadShouldThrow();
}
catch(InterruptedException success) {
}
}
});
try {
t.start();
t.interrupt();
t.join();
lock.writeLock().unlock();
} catch(Exception e){
unexpectedException();
}
|
| public void | testReadLockInterruptibly_Interrupted()read-lockInterruptibly is interruptible
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
lock.writeLock().lock();
Thread t = new Thread(new Runnable() {
public void run() {
try {
lock.readLock().lockInterruptibly();
} catch(InterruptedException success){}
}
});
try {
t.start();
t.interrupt();
lock.writeLock().unlock();
t.join();
} catch(Exception e){
unexpectedException();
}
|
| public void | testReadLockToString()readLock.toString indicates current lock state
ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
String us = lock.readLock().toString();
assertTrue(us.indexOf("Read locks = 0") >= 0);
lock.readLock().lock();
lock.readLock().lock();
String rs = lock.readLock().toString();
assertTrue(rs.indexOf("Read locks = 2") >= 0);
|
| public void | testReadTryLockWhenLocked()read-tryLock fails if locked
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
lock.writeLock().lock();
Thread t = new Thread(new Runnable() {
public void run() {
threadAssertFalse(lock.readLock().tryLock());
}
});
try {
t.start();
t.join();
lock.writeLock().unlock();
} catch(Exception e){
unexpectedException();
}
|
| public void | testReadTryLock_Interrupted()timed read-tryLock is interruptible
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
lock.writeLock().lock();
Thread t = new Thread(new Runnable() {
public void run() {
try {
lock.readLock().tryLock(1000,TimeUnit.MILLISECONDS);
threadShouldThrow();
} catch(InterruptedException success){}
}
});
try {
t.start();
t.interrupt();
t.join();
} catch(Exception e){
unexpectedException();
}
|
| public void | testReadTryLock_Timeout()read timed tryLock times out if write-locked
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
lock.writeLock().lock();
Thread t = new Thread(new Runnable() {
public void run() {
try {
threadAssertFalse(lock.readLock().tryLock(1, TimeUnit.MILLISECONDS));
} catch (Exception ex) {
threadUnexpectedException();
}
}
});
try {
t.start();
t.join();
lock.writeLock().unlock();
} catch(Exception e){
unexpectedException();
}
|
| public void | testSerialization()A serialized lock deserializes as unlocked
ReentrantReadWriteLock l = new ReentrantReadWriteLock();
l.readLock().lock();
l.readLock().unlock();
try {
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
out.writeObject(l);
out.close();
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
ReentrantReadWriteLock r = (ReentrantReadWriteLock) in.readObject();
r.readLock().lock();
r.readLock().unlock();
} catch(Exception e){
e.printStackTrace();
unexpectedException();
}
|
| public void | testSignalAll()signalAll wakes up all threads
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
final Condition c = lock.writeLock().newCondition();
Thread t1 = new Thread(new Runnable() {
public void run() {
try {
lock.writeLock().lock();
c.await();
lock.writeLock().unlock();
}
catch(InterruptedException e) {
threadUnexpectedException();
}
}
});
Thread t2 = new Thread(new Runnable() {
public void run() {
try {
lock.writeLock().lock();
c.await();
lock.writeLock().unlock();
}
catch(InterruptedException e) {
threadUnexpectedException();
}
}
});
try {
t1.start();
t2.start();
Thread.sleep(SHORT_DELAY_MS);
lock.writeLock().lock();
c.signalAll();
lock.writeLock().unlock();
t1.join(SHORT_DELAY_MS);
t2.join(SHORT_DELAY_MS);
assertFalse(t1.isAlive());
assertFalse(t2.isAlive());
}
catch (Exception ex) {
unexpectedException();
}
|
| public void | testSignal_IllegalMonitor()Calling signal without holding lock throws IllegalMonitorStateException
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
final Condition c = lock.writeLock().newCondition();
try {
c.signal();
shouldThrow();
}
catch (IllegalMonitorStateException success) {
}
catch (Exception ex) {
unexpectedException();
}
|
| public void | testToString()toString indicates current lock state
ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
String us = lock.toString();
assertTrue(us.indexOf("Write locks = 0") >= 0);
assertTrue(us.indexOf("Read locks = 0") >= 0);
lock.writeLock().lock();
String ws = lock.toString();
assertTrue(ws.indexOf("Write locks = 1") >= 0);
assertTrue(ws.indexOf("Read locks = 0") >= 0);
lock.writeLock().unlock();
lock.readLock().lock();
lock.readLock().lock();
String rs = lock.toString();
assertTrue(rs.indexOf("Write locks = 0") >= 0);
assertTrue(rs.indexOf("Read locks = 2") >= 0);
|
| public void | testTryLockWhenReadLocked()Read tryLock succeeds if readlocked but not writelocked
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
lock.readLock().lock();
Thread t = new Thread(new Runnable() {
public void run() {
threadAssertTrue(lock.readLock().tryLock());
lock.readLock().unlock();
}
});
try {
t.start();
t.join();
lock.readLock().unlock();
} catch(Exception e){
unexpectedException();
}
|
| public void | testUnlock_IllegalMonitorStateException()write-unlocking an unlocked lock throws IllegalMonitorStateException
ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
try {
rl.writeLock().unlock();
shouldThrow();
} catch(IllegalMonitorStateException success){}
|
| public void | testWriteAfterMultipleReadLocks()A writelock succeeds after reading threads unlock
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
lock.readLock().lock();
Thread t1 = new Thread(new Runnable() {
public void run() {
lock.readLock().lock();
lock.readLock().unlock();
}
});
Thread t2 = new Thread(new Runnable() {
public void run() {
lock.writeLock().lock();
lock.writeLock().unlock();
}
});
try {
t1.start();
t2.start();
Thread.sleep(SHORT_DELAY_MS);
lock.readLock().unlock();
t1.join(MEDIUM_DELAY_MS);
t2.join(MEDIUM_DELAY_MS);
assertTrue(!t1.isAlive());
assertTrue(!t2.isAlive());
} catch(Exception e){
unexpectedException();
}
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| public void | testWriteLockInterruptibly()write lockInterruptibly succeeds if lock free else is interruptible
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
try {
lock.writeLock().lockInterruptibly();
} catch(Exception e) {
unexpectedException();
}
Thread t = new Thread(new Runnable() {
public void run() {
try {
lock.writeLock().lockInterruptibly();
threadShouldThrow();
}
catch(InterruptedException success) {
}
}
});
try {
t.start();
t.interrupt();
t.join();
lock.writeLock().unlock();
} catch(Exception e){
unexpectedException();
}
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| public void | testWriteLockInterruptibly_Interrupted()write-lockInterruptibly is interruptible
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
Thread t = new Thread(new Runnable() {
public void run() {
try {
lock.writeLock().lockInterruptibly();
lock.writeLock().unlock();
lock.writeLock().lockInterruptibly();
lock.writeLock().unlock();
} catch(InterruptedException success){}
}
});
try {
lock.writeLock().lock();
t.start();
t.interrupt();
lock.writeLock().unlock();
t.join();
} catch(Exception e){
unexpectedException();
}
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| public void | testWriteLockToString()writeLock.toString indicates current lock state
ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
String us = lock.writeLock().toString();
assertTrue(us.indexOf("Unlocked") >= 0);
lock.writeLock().lock();
String ls = lock.writeLock().toString();
assertTrue(ls.indexOf("Locked") >= 0);
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| public void | testWriteTryLockWhenLocked()write-tryLock fails if locked
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
lock.writeLock().lock();
Thread t = new Thread(new Runnable() {
public void run() {
threadAssertFalse(lock.writeLock().tryLock());
}
});
try {
t.start();
t.join();
lock.writeLock().unlock();
} catch(Exception e){
unexpectedException();
}
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| public void | testWriteTryLockWhenReadLocked()write tryLock fails when readlocked
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
lock.readLock().lock();
Thread t = new Thread(new Runnable() {
public void run() {
threadAssertFalse(lock.writeLock().tryLock());
}
});
try {
t.start();
t.join();
lock.readLock().unlock();
} catch(Exception e){
unexpectedException();
}
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| public void | testWriteTryLock_Interrupted()timed write-tryLock is interruptible
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
lock.writeLock().lock();
Thread t = new Thread(new Runnable() {
public void run() {
try {
lock.writeLock().tryLock(1000,TimeUnit.MILLISECONDS);
} catch(InterruptedException success){}
}
});
try {
t.start();
t.interrupt();
lock.writeLock().unlock();
t.join();
} catch(Exception e){
unexpectedException();
}
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| public void | testWriteTryLock_Timeout()write timed tryLock times out if locked
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
lock.writeLock().lock();
Thread t = new Thread(new Runnable() {
public void run() {
try {
threadAssertFalse(lock.writeLock().tryLock(1, TimeUnit.MILLISECONDS));
} catch (Exception ex) {
threadUnexpectedException();
}
}
});
try {
t.start();
t.join();
lock.writeLock().unlock();
} catch(Exception e){
unexpectedException();
}
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| public void | testhasQueuedThreads()hasQueuedThreads reports whether there are waiting threads
final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
Thread t1 = new Thread(new InterruptedLockRunnable(lock));
Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
try {
assertFalse(lock.hasQueuedThreads());
lock.writeLock().lock();
t1.start();
Thread.sleep(SHORT_DELAY_MS);
assertTrue(lock.hasQueuedThreads());
t2.start();
Thread.sleep(SHORT_DELAY_MS);
assertTrue(lock.hasQueuedThreads());
t1.interrupt();
Thread.sleep(SHORT_DELAY_MS);
assertTrue(lock.hasQueuedThreads());
lock.writeLock().unlock();
Thread.sleep(SHORT_DELAY_MS);
assertFalse(lock.hasQueuedThreads());
t1.join();
t2.join();
} catch(Exception e){
unexpectedException();
}
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