fr.liglab.adele.cilia.util.concurrent

Class ReentrantWriterPreferenceReadWriteLock

java.lang.Object

fr.liglab.adele.cilia.util.concurrent.WriterPreferenceReadWriteLock

fr.liglab.adele.cilia.util.concurrent.ReentrantWriterPreferenceReadWriteLock

All Implemented Interfaces:

ReadWriteLock

public class ReentrantWriterPreferenceReadWriteLock
extends WriterPreferenceReadWriteLock

Nested Class Summary

Nested classes/interfaces inherited from class fr.liglab.adele.cilia.util.concurrent.WriterPreferenceReadWriteLock

WriterPreferenceReadWriteLock.ReaderLock, WriterPreferenceReadWriteLock.Signaller, WriterPreferenceReadWriteLock.WriterLock

Field Summary

Fields

Modifier and Type	Field and Description
protected static Integer	IONE cache/reuse the special Integer value one to speed up readlocks
protected HashMap	readers_ Number of acquires on read lock by any reader thread
protected long	writeHolds_ Number of acquires on write lock by activeWriter_ thread

Fields inherited from class fr.liglab.adele.cilia.util.concurrent.WriterPreferenceReadWriteLock

activeReaders_, activeWriter_, readerLock_, waitingReaders_, waitingWriters_, writerLock_

Constructor Summary

Constructors

Constructor and Description
ReentrantWriterPreferenceReadWriteLock()

Method Summary

Methods

Modifier and Type	Method and Description
protected boolean	allowReader() Override this method to change to reader preference
protected WriterPreferenceReadWriteLock.Signaller	endRead() Called upon termination of a read.
protected WriterPreferenceReadWriteLock.Signaller	endWrite() Called upon termination of a write.
protected boolean	startRead()
protected boolean	startWrite()

Methods inherited from class fr.liglab.adele.cilia.util.concurrent.WriterPreferenceReadWriteLock

cancelledWaitingReader, cancelledWaitingWriter, readLock, startReadFromNewReader, startReadFromWaitingReader, startWriteFromNewWriter, startWriteFromWaitingWriter, writeLock

Methods inherited from class java.lang.Object

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

Field Detail

writeHolds_

protected long writeHolds_

Number of acquires on write lock by activeWriter_ thread

readers_

protected HashMap readers_

Number of acquires on read lock by any reader thread

IONE

protected static final Integer IONE

cache/reuse the special Integer value one to speed up readlocks

Constructor Detail

ReentrantWriterPreferenceReadWriteLock

public ReentrantWriterPreferenceReadWriteLock()

Method Detail

allowReader

protected boolean allowReader()

Description copied from class: WriterPreferenceReadWriteLock

Override this method to change to reader preference

Overrides:

allowReader in class WriterPreferenceReadWriteLock

startRead

protected boolean startRead()

Overrides:

startRead in class WriterPreferenceReadWriteLock

startWrite

protected boolean startWrite()

Overrides:

startWrite in class WriterPreferenceReadWriteLock

endRead

protected WriterPreferenceReadWriteLock.Signaller endRead()

Description copied from class: WriterPreferenceReadWriteLock

Called upon termination of a read. Returns the object to signal to wake up a waiter, or null if no such

Overrides:

endRead in class WriterPreferenceReadWriteLock

endWrite

protected WriterPreferenceReadWriteLock.Signaller endWrite()

Description copied from class: WriterPreferenceReadWriteLock

Called upon termination of a write. Returns the object to signal to wake up a waiter, or null if no such

Overrides:

endWrite in class WriterPreferenceReadWriteLock