com.orientechnologies.common.concur.resource

Class OSharedResourceAdaptive

java.lang.Object

com.orientechnologies.common.concur.resource.OSharedResourceAdaptive

Direct Known Subclasses:

ODurableComponent, OSharedResourceAdaptiveExternal

public class OSharedResourceAdaptive
extends Object

Adaptive class to handle shared resources. It's configurable specifying if it's running in a concurrent environment and allow o specify a maximum timeout to avoid deadlocks.

Author:

Luca Garulli (l.garulli--(at)--orientdb.com)

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	OSharedResourceAdaptive()
protected	OSharedResourceAdaptive(boolean iConcurrent)
protected	OSharedResourceAdaptive(boolean iConcurrent, int iTimeout, boolean ignoreThreadInterruption)
protected	OSharedResourceAdaptive(int iTimeout)

Method Summary

Modifier and Type	Method and Description
protected void	acquireExclusiveLock()
protected void	acquireSharedLock()
int	addUser()
boolean	assertExclusiveLockHold() To use in assert block.
boolean	assertSharedLockHold() To use in assert block.
int	getUsers()
boolean	isConcurrent()
protected void	releaseExclusiveLock()
protected void	releaseSharedLock()
int	removeUser()
protected boolean	tryAcquireExclusiveLock()
protected boolean	tryAcquireSharedLock()

Methods inherited from class java.lang.Object

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

Constructor Detail

OSharedResourceAdaptive

protected OSharedResourceAdaptive()

OSharedResourceAdaptive

protected OSharedResourceAdaptive(int iTimeout)

OSharedResourceAdaptive

protected OSharedResourceAdaptive(boolean iConcurrent)

OSharedResourceAdaptive

protected OSharedResourceAdaptive(boolean iConcurrent,
                                  int iTimeout,
                                  boolean ignoreThreadInterruption)

Method Detail

getUsers

public int getUsers()

addUser

public int addUser()

removeUser

public int removeUser()

isConcurrent

public boolean isConcurrent()

assertExclusiveLockHold

public boolean assertExclusiveLockHold()

To use in assert block.

assertSharedLockHold

public boolean assertSharedLockHold()

To use in assert block.

acquireExclusiveLock

protected void acquireExclusiveLock()

tryAcquireExclusiveLock

protected boolean tryAcquireExclusiveLock()

acquireSharedLock

protected void acquireSharedLock()

tryAcquireSharedLock

protected boolean tryAcquireSharedLock()

releaseExclusiveLock

protected void releaseExclusiveLock()

releaseSharedLock

protected void releaseSharedLock()