Class RWLock

java.lang.Object

java.util.concurrent.locks.AbstractOwnableSynchronizer

java.util.concurrent.locks.AbstractQueuedSynchronizer

one.nio.lock.RWLock

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

FairRWLock, PaddedRWLock

public class RWLock
extends AbstractQueuedSynchronizer

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class AbstractQueuedSynchronizer

AbstractQueuedSynchronizer.ConditionObject

Field Summary

Fields

Modifier and Type	Field	Description
private static final long	MILLIS
private static final int	READ
private static final int	WRITE

Constructor Summary

Constructors

Constructor	Description
RWLock()

Method Summary

Modifier and Type	Method	Description
final void	downgrade()
final RWLock	lockRead()
final boolean	lockRead(long timeout)
final RWLock	lockWrite()
final boolean	lockWrite(long timeout)
protected int	tryAcquireShared(int acquires)
protected final boolean	tryReleaseShared(int releases)
final void	unlock(boolean write)
final void	unlockRead()
final void	unlockWrite()

Methods inherited from class AbstractQueuedSynchronizer

acquire, acquireInterruptibly, acquireShared, acquireSharedInterruptibly, compareAndSetState, getExclusiveQueuedThreads, getFirstQueuedThread, getQueuedThreads, getQueueLength, getSharedQueuedThreads, getState, getWaitingThreads, getWaitQueueLength, hasContended, hasQueuedPredecessors, hasQueuedThreads, hasWaiters, isHeldExclusively, isQueued, owns, release, releaseShared, setState, toString, tryAcquire, tryAcquireNanos, tryAcquireSharedNanos, tryRelease

Methods inherited from class AbstractOwnableSynchronizer

getExclusiveOwnerThread, setExclusiveOwnerThread

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details

READ

private static final int READ

See Also:

• Constant Field Values

WRITE

private static final int WRITE

See Also:

• Constant Field Values

MILLIS

private static final long MILLIS

See Also:

• Constant Field Values

Constructor Details

RWLock

public RWLock()

Method Details

lockRead

public final RWLock lockRead()

lockRead

public final boolean lockRead(long timeout)

unlockRead

public final void unlockRead()

lockWrite

public final RWLock lockWrite()

lockWrite

public final boolean lockWrite(long timeout)

unlockWrite

public final void unlockWrite()

unlock

public final void unlock(boolean write)

downgrade

public final void downgrade()

tryAcquireShared

protected int tryAcquireShared(int acquires)

Overrides:

tryAcquireShared in class AbstractQueuedSynchronizer

tryReleaseShared

protected final boolean tryReleaseShared(int releases)

Overrides:

tryReleaseShared in class AbstractQueuedSynchronizer