ReaderThreadImpl.java

/*
 * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code 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
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package com.sun.corba.se.impl.transport;

import java.io.IOException;

import com.sun.corba.se.pept.transport.Connection;
import com.sun.corba.se.pept.transport.ReaderThread;
import com.sun.corba.se.pept.transport.Selector;

import com.sun.corba.se.spi.orb.ORB;
import com.sun.corba.se.spi.orbutil.threadpool.Work;

import com.sun.corba.se.impl.orbutil.ORBUtility;

public class ReaderThreadImpl
    implements
	ReaderThread,
	Work
{
    private ORB orb;
    private Connection connection;
    private Selector selector;
    private boolean keepRunning;
    private long enqueueTime;

    public ReaderThreadImpl(ORB orb, 
			    Connection connection, Selector selector)
    {
	this.orb = orb;
	this.connection = connection;
	this.selector = selector;
	keepRunning = true;
    }

    ////////////////////////////////////////////////////
    // 
    // ReaderThread methods.
    //

    public Connection getConnection()
    {
	return connection;
    }

    public void close()
    {
	if (orb.transportDebugFlag) {
	    dprint(".close: " + connection);
	}

	keepRunning = false;
    }

    ////////////////////////////////////////////////////
    //
    // Work methods.
    //

    // REVISIT - this needs alot more from previous ReaderThread.
    public void doWork()
    {
	try {
	    if (orb.transportDebugFlag) {
		dprint(".doWork: Start ReaderThread: " + connection);
	    }
	    while (keepRunning) {
		try {

		    if (orb.transportDebugFlag) {
			dprint(".doWork: Start ReaderThread cycle: " 
			       + connection);
		    }

		    if (connection.read()) {
			// REVISIT - put in pool;
			return;
		    }

		    if (orb.transportDebugFlag) {
			dprint(".doWork: End ReaderThread cycle: "
			       + connection);
		    }

		} catch (Throwable t) {
		    if (orb.transportDebugFlag) {
			dprint(".doWork: exception in read: " + connection,t);
		    }
		    orb.getTransportManager().getSelector(0)
			.unregisterForEvent(getConnection().getEventHandler());
		    getConnection().close();
		}
	    }
	} finally {
	    if (orb.transportDebugFlag) {
		dprint(".doWork: Terminated ReaderThread: " + connection);
	    }
	}
    }

    public void setEnqueueTime(long timeInMillis) 
    {
	enqueueTime = timeInMillis;
    }

    public long getEnqueueTime() 
    {
	return enqueueTime;
    }

    public String getName() { return "ReaderThread"; }

    ////////////////////////////////////////////////////
    //
    // Implementation.
    //

    private void dprint(String msg)
    {
	ORBUtility.dprint("ReaderThreadImpl", msg);
    }

    protected void dprint(String msg, Throwable t)
    {
	dprint(msg);
	t.printStackTrace(System.out);
    }
}

// End of file.