org.jacorb.imr
Class ResourceLock
java.lang.Object
org.jacorb.imr.ResourceLock
- java.io.Serializable
public class ResourceLock
extends java.lang.Object
implements java.io.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.
- Nicolas Noffke
$Id: ResourceLock.java,v 1.3 2004/05/06 12:39:59 nicolas Exp $
- Serialized Form
ResourceLock
public ResourceLock()
The constructor.
gainExclusiveLock
public void gainExclusiveLock()
This method tries to aquire an exclusive lock. It blocks until
all shared locks have been released.
gainSharedLock
public void gainSharedLock()
This method tries to aquire a shared lock. It blocks
until the exclusive lock is released.
releaseExclusiveLock
public void releaseExclusiveLock()
Releases the exclusive lock. Unblocks all threads waiting
for access.
releaseSharedLock
public void releaseSharedLock()
Release the shared lock. Unblocks threads waiting for
access.