java.util.concurrent.locks

Class ReentrantReadWriteLock.FairSync [ source ]

java.lang.Object

java.util.concurrent.locks.AbstractOwnableSynchronizer

java.util.concurrent.locks.AbstractQueuedSynchronizer

java.util.concurrent.locks.ReentrantReadWriteLock.Sync

java.util.concurrent.locks.ReentrantReadWriteLock.FairSync

All Implemented Interfaces:

Serializable

Enclosing class:

ReentrantReadWriteLock

static final class ReentrantReadWriteLock.FairSync
extends ReentrantReadWriteLock.Sync

Fair version of Sync

Nested Class Summary

Nested classes/interfaces inherited from class java.util.concurrent.locks.ReentrantReadWriteLock.Sync

ReentrantReadWriteLock.Sync.HoldCounter, ReentrantReadWriteLock.Sync.ThreadLocalHoldCounter

Nested classes/interfaces inherited from class java.util.concurrent.locks.AbstractQueuedSynchronizer

AbstractQueuedSynchronizer.ConditionObject, AbstractQueuedSynchronizer.Node

Field Summary

Fields inherited from class java.util.concurrent.locks.ReentrantReadWriteLock.Sync

cachedHoldCounter, EXCLUSIVE_MASK, MAX_COUNT, readHolds, SHARED_SHIFT, SHARED_UNIT

Fields inherited from class java.util.concurrent.locks.AbstractQueuedSynchronizer

spinForTimeoutThreshold

Constructor Summary

Constructors

Constructor and Description
ReentrantReadWriteLock.FairSync()

Method Summary

Methods

Modifier and Type	Method and Description
(package private) boolean	readerShouldBlock(Thread current) Return true if a reader thread that is otherwise eligible for lock should block because of policy for overtaking other waiting threads.
(package private) boolean	writerShouldBlock(Thread current) Return true if a writer thread that is otherwise eligible for lock should block because of policy for overtaking other waiting threads.

Methods inherited from class java.util.concurrent.locks.ReentrantReadWriteLock.Sync

exclusiveCount, fullTryAcquireShared, getCount, getOwner, getReadHoldCount, getReadLockCount, getWriteHoldCount, isHeldExclusively, isWriteLocked, newCondition, sharedCount, tryAcquire, tryAcquireShared, tryReadLock, tryRelease, tryReleaseShared, tryWriteLock

Methods inherited from class java.util.concurrent.locks.AbstractQueuedSynchronizer

acquire, acquireInterruptibly, acquireQueued, acquireShared, acquireSharedInterruptibly, apparentlyFirstQueuedIsExclusive, compareAndSetState, fullIsFirst, fullyRelease, getExclusiveQueuedThreads, getFirstQueuedThread, getQueuedThreads, getQueueLength, getSharedQueuedThreads, getState, getWaitingThreads, getWaitQueueLength, hasContended, hasQueuedThreads, hasWaiters, isFirst, isOnSyncQueue, isQueued, owns, release, releaseShared, setState, toString, transferAfterCancelledWait, transferForSignal, tryAcquireNanos, tryAcquireSharedNanos

Methods inherited from class java.util.concurrent.locks.AbstractOwnableSynchronizer

getExclusiveOwnerThread, setExclusiveOwnerThread

Methods inherited from class java.lang.Object

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

Constructor Detail

ReentrantReadWriteLock.FairSync

ReentrantReadWriteLock.FairSync()

Method Detail

writerShouldBlock

final boolean writerShouldBlock(Thread current)

Description copied from class: ReentrantReadWriteLock.Sync

Return true if a writer thread that is otherwise eligible for lock should block because of policy for overtaking other waiting threads.

Specified by:

writerShouldBlock in class ReentrantReadWriteLock.Sync

readerShouldBlock

final boolean readerShouldBlock(Thread current)

Description copied from class: ReentrantReadWriteLock.Sync

Return true if a reader thread that is otherwise eligible for lock should block because of policy for overtaking other waiting threads.

Specified by:

readerShouldBlock in class ReentrantReadWriteLock.Sync