/*
* Created on 19-Dec-2005
* Created by Paul Gardner
* Copyright (C) 2005, 2006 Aelitis, All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* AELITIS, SAS au capital de 46,603.30 euros
* 8 Allee Lenotre, La Grille Royale, 78600 Le Mesnil le Roi, France.
*
*/
package org.gudy.azureus2.core3.disk.impl;
import java.util.ArrayList;
import java.util.List;
import org.gudy.azureus2.core3.util.AEMonitor;
public class
DiskManagerAllocationScheduler
{
private List instances = new ArrayList();
private AEMonitor instance_mon = new AEMonitor( "DiskManagerAllocationScheduler" );
public void
register(
DiskManagerHelper helper )
{
try{
instance_mon.enter();
instances.add( helper );
}finally{
instance_mon.exit();
}
}
protected boolean
getPermission(
DiskManagerHelper instance )
{
try{
instance_mon.enter();
if ( instances.get(0) == instance ){
return( true );
}
}finally{
instance_mon.exit();
}
try{
Thread.sleep( 250 );
}catch( Throwable e ){
}
return( false );
}
protected void
unregister(
DiskManagerHelper instance )
{
try{
instance_mon.enter();
instances.remove( instance );
}finally{
instance_mon.exit();
}
}
}