org.neo4j.kernel.ha.lock.forseti

Class ForsetiClient

java.lang.Object

org.neo4j.kernel.ha.lock.forseti.ForsetiClient

All Implemented Interfaces:

AutoCloseable, org.neo4j.kernel.impl.locking.Locks.Client

public class ForsetiClient
extends Object
implements org.neo4j.kernel.impl.locking.Locks.Client

These clients act as agents against the lock manager. The clients hold and release locks. The Forseti client tracks which locks it already holds, and will only communicate with the global lock manager if necessary. Grabbing the same lock multiple times will honor re-entrancy et cetera, but the client will track in local fields how many times the lock has been grabbed, such that it will only grab and release the lock once from the global lock manager.

Constructor Summary

Constructors

Constructor and Description
ForsetiClient(int id, ConcurrentMap<Long,org.neo4j.kernel.ha.lock.forseti.ForsetiLockManager.Lock>[] lockMaps, org.neo4j.kernel.impl.util.concurrent.WaitStrategy<org.neo4j.kernel.impl.locking.AcquireLockTimeoutException>[] waitStrategies, org.neo4j.collection.pool.LinkedQueuePool<ForsetiClient> clientPool)

Method Summary

Methods

Modifier and Type	Method and Description
void	acquireExclusive(org.neo4j.kernel.impl.locking.Locks.ResourceType resourceType, long... resourceIds)
void	acquireShared(org.neo4j.kernel.impl.locking.Locks.ResourceType resourceType, long... resourceIds)
void	close()
void	copyWaitListTo(org.neo4j.kernel.impl.util.collection.SimpleBitSet other)
String	describeWaitList()
boolean	equals(Object o)
int	getLockSessionId()
int	hashCode()
int	id()
boolean	isWaitingFor(int clientId)
void	releaseAll()
void	releaseAllExclusive()
void	releaseAllShared()
void	releaseExclusive(org.neo4j.kernel.impl.locking.Locks.ResourceType resourceType, long... resourceIds)
void	releaseShared(org.neo4j.kernel.impl.locking.Locks.ResourceType resourceType, long... resourceIds)
String	toString()
boolean	tryExclusiveLock(org.neo4j.kernel.impl.locking.Locks.ResourceType resourceType, long... resourceIds)
boolean	trySharedLock(org.neo4j.kernel.impl.locking.Locks.ResourceType resourceType, long... resourceIds)
int	waitListSize()

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

ForsetiClient

public ForsetiClient(int id,
             ConcurrentMap<Long,org.neo4j.kernel.ha.lock.forseti.ForsetiLockManager.Lock>[] lockMaps,
             org.neo4j.kernel.impl.util.concurrent.WaitStrategy<org.neo4j.kernel.impl.locking.AcquireLockTimeoutException>[] waitStrategies,
             org.neo4j.collection.pool.LinkedQueuePool<ForsetiClient> clientPool)

Method Detail

acquireShared

public void acquireShared(org.neo4j.kernel.impl.locking.Locks.ResourceType resourceType,
                 long... resourceIds)
                   throws org.neo4j.kernel.impl.locking.AcquireLockTimeoutException

Specified by:

acquireShared in interface org.neo4j.kernel.impl.locking.Locks.Client

Throws:

org.neo4j.kernel.impl.locking.AcquireLockTimeoutException

acquireExclusive

public void acquireExclusive(org.neo4j.kernel.impl.locking.Locks.ResourceType resourceType,
                    long... resourceIds)
                      throws org.neo4j.kernel.impl.locking.AcquireLockTimeoutException

Specified by:

acquireExclusive in interface org.neo4j.kernel.impl.locking.Locks.Client

Throws:

org.neo4j.kernel.impl.locking.AcquireLockTimeoutException

tryExclusiveLock

public boolean tryExclusiveLock(org.neo4j.kernel.impl.locking.Locks.ResourceType resourceType,
                       long... resourceIds)

Specified by:

tryExclusiveLock in interface org.neo4j.kernel.impl.locking.Locks.Client

trySharedLock

public boolean trySharedLock(org.neo4j.kernel.impl.locking.Locks.ResourceType resourceType,
                    long... resourceIds)

Specified by:

trySharedLock in interface org.neo4j.kernel.impl.locking.Locks.Client

releaseShared

public void releaseShared(org.neo4j.kernel.impl.locking.Locks.ResourceType resourceType,
                 long... resourceIds)

Specified by:

releaseShared in interface org.neo4j.kernel.impl.locking.Locks.Client

releaseExclusive

public void releaseExclusive(org.neo4j.kernel.impl.locking.Locks.ResourceType resourceType,
                    long... resourceIds)

Specified by:

releaseExclusive in interface org.neo4j.kernel.impl.locking.Locks.Client

releaseAllShared

public void releaseAllShared()

Specified by:

releaseAllShared in interface org.neo4j.kernel.impl.locking.Locks.Client

releaseAllExclusive

public void releaseAllExclusive()

Specified by:

releaseAllExclusive in interface org.neo4j.kernel.impl.locking.Locks.Client

releaseAll

public void releaseAll()

Specified by:

releaseAll in interface org.neo4j.kernel.impl.locking.Locks.Client

close

public void close()

Specified by:

close in interface AutoCloseable

Specified by:

close in interface org.neo4j.kernel.impl.locking.Locks.Client

getLockSessionId

public int getLockSessionId()

Specified by:

getLockSessionId in interface org.neo4j.kernel.impl.locking.Locks.Client

waitListSize

public int waitListSize()

copyWaitListTo

public void copyWaitListTo(org.neo4j.kernel.impl.util.collection.SimpleBitSet other)

isWaitingFor

public boolean isWaitingFor(int clientId)

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object

describeWaitList

public String describeWaitList()

id

public int id()