程序包 java.util.concurrent.locks

类 AbstractQueuedLongSynchronizer.ConditionObject

java.lang.Object

java.util.concurrent.locks.AbstractQueuedLongSynchronizer.ConditionObject

所有已实现的接口:

Serializable, Condition

封闭类:

AbstractQueuedLongSynchronizer

public class AbstractQueuedLongSynchronizer.ConditionObject
extends Object
implements Condition, Serializable

Condition implementation for a AbstractQueuedLongSynchronizer serving as the basis of a Lock implementation.

Method documentation for this class describes mechanics, not behavioral specifications from the point of view of Lock and Condition users. Exported versions of this class will in general need to be accompanied by documentation describing condition semantics that rely on those of the associated AbstractQueuedLongSynchronizer.

This class is Serializable, but all fields are transient, so deserialized conditions have no waiters.

从以下版本开始:

1.6

另请参阅:

序列化表格

构造器概要

构造器

构造器	说明
ConditionObject()	Creates a new ConditionObject instance.

方法概要

限定符和类型	方法	说明
void	await()	Implements interruptible condition wait.
boolean	await(long time, TimeUnit unit)	Implements timed condition wait.
long	awaitNanos(long nanosTimeout)	Implements timed condition wait.
void	awaitUninterruptibly()	Implements uninterruptible condition wait.
boolean	awaitUntil(Date deadline)	Implements absolute timed condition wait.
protected Collection<Thread>	getWaitingThreads()	Returns a collection containing those threads that may be waiting on this Condition.
protected int	getWaitQueueLength()	Returns an estimate of the number of threads waiting on this condition.
protected boolean	hasWaiters()	Queries whether any threads are waiting on this condition.
void	signal()	Moves the longest-waiting thread, if one exists, from the wait queue for this condition to the wait queue for the owning lock.
void	signalAll()	Moves all threads from the wait queue for this condition to the wait queue for the owning lock.

从类继承的方法 java.lang.Object

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

构造器详细资料

ConditionObject

public ConditionObject()

Creates a new ConditionObject instance.

方法详细资料

signal

public final void signal()

Moves the longest-waiting thread, if one exists, from the wait queue for this condition to the wait queue for the owning lock.

指定者:

signal 在接口中 Condition

抛出:

IllegalMonitorStateException - if AbstractQueuedLongSynchronizer.isHeldExclusively() returns false

signalAll

public final void signalAll()

Moves all threads from the wait queue for this condition to the wait queue for the owning lock.

指定者:

signalAll 在接口中 Condition

抛出:

IllegalMonitorStateException - if AbstractQueuedLongSynchronizer.isHeldExclusively() returns false

awaitUninterruptibly

public final void awaitUninterruptibly()

Implements uninterruptible condition wait.

1. Save lock state returned by AbstractQueuedLongSynchronizer.getState().
2. Invoke AbstractQueuedLongSynchronizer.release(long) with saved state as argument, throwing IllegalMonitorStateException if it fails.
3. Block until signalled.
4. Reacquire by invoking specialized version of AbstractQueuedLongSynchronizer.acquire(long) with saved state as argument.

指定者:

awaitUninterruptibly 在接口中 Condition

await

public final void await()
                 throws InterruptedException

Implements interruptible condition wait.

1. If current thread is interrupted, throw InterruptedException.
2. Save lock state returned by AbstractQueuedLongSynchronizer.getState().
3. Invoke AbstractQueuedLongSynchronizer.release(long) with saved state as argument, throwing IllegalMonitorStateException if it fails.
4. Block until signalled or interrupted.
5. Reacquire by invoking specialized version of AbstractQueuedLongSynchronizer.acquire(long) with saved state as argument.
6. If interrupted while blocked in step 4, throw InterruptedException.

指定者:

await 在接口中 Condition

抛出:

InterruptedException - if the current thread is interrupted (and interruption of thread suspension is supported)

awaitNanos

public final long awaitNanos(long nanosTimeout)
                      throws InterruptedException

Implements timed condition wait.

1. If current thread is interrupted, throw InterruptedException.
2. Save lock state returned by AbstractQueuedLongSynchronizer.getState().
3. Invoke AbstractQueuedLongSynchronizer.release(long) with saved state as argument, throwing IllegalMonitorStateException if it fails.
4. Block until signalled, interrupted, or timed out.
5. Reacquire by invoking specialized version of AbstractQueuedLongSynchronizer.acquire(long) with saved state as argument.
6. If interrupted while blocked in step 4, throw InterruptedException.

指定者:

awaitNanos 在接口中 Condition

参数:

nanosTimeout - the maximum time to wait, in nanoseconds

返回:

an estimate of the nanosTimeout value minus the time spent waiting upon return from this method. A positive value may be used as the argument to a subsequent call to this method to finish waiting out the desired time. A value less than or equal to zero indicates that no time remains.

抛出:

InterruptedException - if the current thread is interrupted (and interruption of thread suspension is supported)

awaitUntil

public final boolean awaitUntil(Date deadline)
                         throws InterruptedException

Implements absolute timed condition wait.

1. If current thread is interrupted, throw InterruptedException.
2. Save lock state returned by AbstractQueuedLongSynchronizer.getState().
3. Invoke AbstractQueuedLongSynchronizer.release(long) with saved state as argument, throwing IllegalMonitorStateException if it fails.
4. Block until signalled, interrupted, or timed out.
5. Reacquire by invoking specialized version of AbstractQueuedLongSynchronizer.acquire(long) with saved state as argument.
6. If interrupted while blocked in step 4, throw InterruptedException.
7. If timed out while blocked in step 4, return false, else true.

指定者:

awaitUntil 在接口中 Condition

参数:

deadline - the absolute time to wait until

返回:

false if the deadline has elapsed upon return, else true

抛出:

InterruptedException - if the current thread is interrupted (and interruption of thread suspension is supported)

await

public final boolean await(long time,
                           TimeUnit unit)
                    throws InterruptedException

Implements timed condition wait.

1. If current thread is interrupted, throw InterruptedException.
2. Save lock state returned by AbstractQueuedLongSynchronizer.getState().
3. Invoke AbstractQueuedLongSynchronizer.release(long) with saved state as argument, throwing IllegalMonitorStateException if it fails.
4. Block until signalled, interrupted, or timed out.
5. Reacquire by invoking specialized version of AbstractQueuedLongSynchronizer.acquire(long) with saved state as argument.
6. If interrupted while blocked in step 4, throw InterruptedException.
7. If timed out while blocked in step 4, return false, else true.

指定者:

await 在接口中 Condition

参数:

time - the maximum time to wait

unit - the time unit of the time argument

返回:

false if the waiting time detectably elapsed before return from the method, else true

抛出:

InterruptedException - if the current thread is interrupted (and interruption of thread suspension is supported)

hasWaiters

protected final boolean hasWaiters()

Queries whether any threads are waiting on this condition. Implements AbstractQueuedLongSynchronizer#hasWaiters(ConditionObject).

返回:

true if there are any waiting threads

抛出:

IllegalMonitorStateException - if AbstractQueuedLongSynchronizer.isHeldExclusively() returns false

getWaitQueueLength

protected final int getWaitQueueLength()

Returns an estimate of the number of threads waiting on this condition. Implements AbstractQueuedLongSynchronizer#getWaitQueueLength(ConditionObject).

返回:

the estimated number of waiting threads

抛出:

IllegalMonitorStateException - if AbstractQueuedLongSynchronizer.isHeldExclusively() returns false

getWaitingThreads

protected final Collection<Thread> getWaitingThreads()

Returns a collection containing those threads that may be waiting on this Condition. Implements AbstractQueuedLongSynchronizer#getWaitingThreads(ConditionObject).

返回:

the collection of threads

抛出:

IllegalMonitorStateException - if AbstractQueuedLongSynchronizer.isHeldExclusively() returns false