Class AbstractOwnableSynchronizer

java.lang.Object

java.util.concurrent.locks.AbstractOwnableSynchronizer

All Implemented Interfaces:: Serializable

Direct Known Subclasses:: AbstractQueuedLongSynchronizer, AbstractQueuedSynchronizer

public abstract class AbstractOwnableSynchronizer extends Object implements Serializable

A synchronizer that may be exclusively owned by a thread. This class provides a basis for creating locks and related synchronizers that may entail a notion of ownership. The AbstractOwnableSynchronizer class itself does not manage or use this information. However, subclasses and tools may use appropriately maintained values to help control and monitor access and provide diagnostics.

Since:

1.6

See Also:

Constructor Summary

AbstractOwnableSynchronizer()

Modifier	Constructor	Description
`protected`	Empty constructor for use by subclasses.

Method Summary

Modifier and Type	Method	Description
`protected final Thread`	`getExclusiveOwnerThread()`	Returns the thread last set by `setExclusiveOwnerThread`, or `null` if never set.
`protected final void`	`setExclusiveOwnerThread(Thread thread)`	Sets the thread that currently owns exclusive access.

Methods declared in class Object

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

Modifier and Type	Method	Description
`protected Object`	`clone()`	Creates and returns a copy of this object.
`boolean`	`equals(Object obj)`	Indicates whether some other object is "equal to" this one.
`protected void`	`finalize()`	Deprecated, for removal: This API element is subject to removal in a future version. Finalization is deprecated and subject to removal in a future release.
`final Class<?>`	`getClass()`	Returns the runtime class of this `Object`.
`int`	`hashCode()`	Returns a hash code value for this 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()`	Causes the current thread to wait until it is awakened, typically by being notified or interrupted.
`final void`	`wait(long timeoutMillis)`	Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait(long timeoutMillis, int nanos)`	Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.

Constructor Details

AbstractOwnableSynchronizer

protected AbstractOwnableSynchronizer()

Empty constructor for use by subclasses.

Method Details

setExclusiveOwnerThread

protected final void setExclusiveOwnerThread(Thread thread)

Sets the thread that currently owns exclusive access. A null argument indicates that no thread owns access. This method does not otherwise impose any synchronization or volatile field accesses.

Parameters:: thread - the owner thread

getExclusiveOwnerThread

protected final Thread getExclusiveOwnerThread()

Returns the thread last set by setExclusiveOwnerThread, or null if never set. This method does not otherwise impose any synchronization or volatile field accesses.

Returns:: the owner thread

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