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:
- Serialized Form
Constructor Summary
Modifier | Constructor | Description |
---|---|---|
protected | AbstractOwnableSynchronizer() | Empty constructor for use by subclasses. |
Method Summary
Modifier and Type | Method | Description |
---|---|---|
protected Thread | getExclusiveOwnerThread() | Returns the thread last set by |
protected void | setExclusiveOwnerThread(Thread thread) | Sets the thread that currently owns exclusive access. |
Methods declared in class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Constructor Detail
AbstractOwnableSynchronizer
protected AbstractOwnableSynchronizer()
Empty constructor for use by subclasses.
Method Detail
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