/*
* JBoss, Home of Professional Open Source
* Copyright 2005, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.net.sockets;
import java.io.IOException;
import java.rmi.server.RMIClientSocketFactory;
import java.net.Socket;
import EDU.oswego.cs.dl.util.concurrent.FIFOSemaphore;
/**
*
* @author Scott.Stark@jboss.org
* @version $Revision: 1958 $
*/
public class QueuedClientSocketFactory
implements RMIClientSocketFactory, java.io.Externalizable
{
private transient FIFOSemaphore permits;
private long numPermits;
public QueuedClientSocketFactory()
{
}
public QueuedClientSocketFactory(long nPermits)
{
permits = new FIFOSemaphore(nPermits);
numPermits = nPermits;
}
/**
* Create a server socket on the specified port (port 0 indicates
* an anonymous port).
* @param port the port number
* @return the server socket on the specified port
* @exception IOException if an I/O error occurs during server socket
* creation
* @since 1.2
*/
public Socket createSocket(String host, int port) throws IOException
{
try
{
permits.acquire();
return new Socket(host, port);
}
catch (InterruptedException ex)
{
throw new IOException("Failed to acquire FIFOSemaphore for ClientSocketFactory");
}
finally
{
permits.release();
}
}
public boolean equals(Object obj)
{
return obj instanceof QueuedClientSocketFactory;
}
public int hashCode()
{
return getClass().getName().hashCode();
}
public void writeExternal(java.io.ObjectOutput out)
throws IOException
{
out.writeLong(numPermits);
}
public void readExternal(java.io.ObjectInput in)
throws IOException, ClassNotFoundException
{
numPermits = in.readLong();
permits = new FIFOSemaphore(numPermits);
}
}