org.jacorb.imr
Class ResourceLock
public
class
ResourceLock
extends Object
implements Serializable
This class provides shared or exclusive access to a ressource.
It preferes the exclusive access, i.e. if threads are waiting for
exclusive access, shared locks can't be gained.
Author: Nicolas Noffke
$Id: ResourceLock.java,v 1.3 2004/05/06 12:39:59 nicolas Exp $
public ResourceLock()
The constructor.
public void gainExclusiveLock()
This method tries to aquire an exclusive lock. It blocks until
all shared locks have been released.
public void gainSharedLock()
This method tries to aquire a shared lock. It blocks
until the exclusive lock is released.
public void releaseExclusiveLock()
Releases the exclusive lock. Unblocks all threads waiting
for access.
public void releaseSharedLock()
Release the shared lock. Unblocks threads waiting for
access.