com.sun.jbi.management.util

Class LockManager

java.lang.Object

com.sun.jbi.management.util.LockManager

public class LockManager
extends Object

Utility class to manage the acquition and release of a ReentrantReadWrite Lock.

Author:

Sun Microsystems, Inc

Constructor Summary

Constructors

Constructor and Description
LockManager(ReentrantReadWriteLock lock, String lockName, ManagementContext ctx, String lockInterval) Creates a new instance of LockManager

Method Summary

Methods

Modifier and Type	Method and Description
void	acquireReadLock() Acquire Read Lock
void	acquireWriteLock() Acquire write lock to the in-memory registry lock.
void	downgradeWriteLock() Downgrade Write Lock
void	releaseReadLock() Release Read Lock
void	releaseWriteLock() Release write lock

Methods inherited from class java.lang.Object

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

Constructor Detail

LockManager

public LockManager(ReentrantReadWriteLock lock,
           String lockName,
           ManagementContext ctx,
           String lockInterval)

Creates a new instance of LockManager

Parameters:

lock - - the ReentrantReadWriteLock to be managed

lockName - - user friendly name for the lock

ctx - - management context

lockInterval - - secons to wait for acquiring a registry read/write lock.

Method Detail

acquireReadLock

public void acquireReadLock()
                     throws RegistryException

Acquire Read Lock

Throws:

a - RegistryException if a Read Lock cannot be obtained after waiting for the lock interval

RegistryException

acquireWriteLock

public void acquireWriteLock()
                      throws RegistryException

Acquire write lock to the in-memory registry lock.

Throws:

a - RegistryException if a Write Lock cannot be obtained after waiting for the lock wait interval

RegistryException

releaseReadLock

public void releaseReadLock()

Release Read Lock

releaseWriteLock

public void releaseWriteLock()

Release write lock

downgradeWriteLock

public void downgradeWriteLock()
                        throws RegistryException

Downgrade Write Lock

Throws:

RegistryException - if the Read Lock cannot be acquired.