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Added in API level 1

Summary: Ctors | Methods | Protected Methods | Inherited Methods | [Expand All]

AbstractQueuedSynchronizer.ConditionObject

public class AbstractQueuedSynchronizer.ConditionObject
extends Object implements Condition, Serializable

java.lang.Object
↳	java.util.concurrent.locks.AbstractQueuedSynchronizer.ConditionObject

Condition implementation for a AbstractQueuedSynchronizer 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 AbstractQueuedSynchronizer.

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

Summary

Public constructors
`AbstractQueuedSynchronizer.ConditionObject()` Creates a new `ConditionObject` instance.

Public methods
`final void`	`await()` Implements interruptible condition wait.
`final boolean`	`await(long time, TimeUnit unit)` Implements timed condition wait.
`final long`	`awaitNanos(long nanosTimeout)` Implements timed condition wait.
`final void`	`awaitUninterruptibly()` Implements uninterruptible condition wait.
`final boolean`	`awaitUntil(Date deadline)` Implements absolute timed condition wait.
`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.
`final void`	`signalAll()` Moves all threads from the wait queue for this condition to the wait queue for the owning lock.

Protected methods
`final int`	`getWaitQueueLength()` Returns an estimate of the number of threads waiting on this condition.
`final Collection<Thread>`	`getWaitingThreads()` Returns a collection containing those threads that may be waiting on this Condition.
`final boolean`	`hasWaiters()` Queries whether any threads are waiting on this condition.

Inherited methods

From class


  
    java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long millis, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void`	`wait(long millis)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void`	`wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

From interface


  
    java.util.concurrent.locks.Condition

Public constructors

AbstractQueuedSynchronizer.ConditionObject

Added in API level 1

AbstractQueuedSynchronizer.ConditionObject ()

Creates a new ConditionObject instance.

Public methods

await

Added in API level 1

void await ()

Implements interruptible condition wait.

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

Throws
`InterruptedException`

await

Added in API level 1

boolean await (long time, 
                TimeUnit unit)

Implements timed condition wait.

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

Parameters
`time`	`long`: the maximum time to wait
`unit`	`TimeUnit`: the time unit of the `time` argument

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

Throws
`InterruptedException`

awaitNanos

Added in API level 1

long awaitNanos (long nanosTimeout)

Implements timed condition wait.

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

Parameters
`nanosTimeout`	`long`: the maximum time to wait, in nanoseconds

Returns
`long`	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.

Throws
`InterruptedException`

awaitUninterruptibly

Added in API level 1

void awaitUninterruptibly ()

Implements uninterruptible condition wait.

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

awaitUntil

Added in API level 1

boolean awaitUntil (Date deadline)

Implements absolute timed condition wait.

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

Parameters
`deadline`	`Date`: the absolute time to wait until

Returns
`boolean`	`false` if the deadline has elapsed upon return, else `true`

Throws
`InterruptedException`

signal

Added in API level 1

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.

Throws
`IllegalMonitorStateException`	if `isHeldExclusively()` returns `false`

signalAll

Added in API level 1

void signalAll ()

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

Throws
`IllegalMonitorStateException`	if `isHeldExclusively()` returns `false`

Protected methods

getWaitQueueLength

Added in API level 1

int getWaitQueueLength ()

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

Returns
`int`	the estimated number of waiting threads

Throws
`IllegalMonitorStateException`	if `isHeldExclusively()` returns `false`

getWaitingThreads

Added in API level 1

Collection<Thread> getWaitingThreads ()

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

Returns
`Collection<Thread>`	the collection of threads

Throws
`IllegalMonitorStateException`	if `isHeldExclusively()` returns `false`

hasWaiters

Added in API level 1

boolean hasWaiters ()

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

Returns
`boolean`	`true` if there are any waiting threads

Throws
`IllegalMonitorStateException`	if `isHeldExclusively()` returns `false`

Interfaces

Classes

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AbstractQueuedSynchronizer.ConditionObject

Summary

Public constructors

Public methods

Protected methods

Inherited methods

Public constructors

AbstractQueuedSynchronizer.ConditionObject

Public methods

await

await

awaitNanos

awaitUninterruptibly

awaitUntil

signal

signalAll

Protected methods

getWaitQueueLength

getWaitingThreads

hasWaiters