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 * Copyright 2004 The Apache Software Foundation
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package org.apache.jk.common;

import java.io.IOException;
import java.io.RandomAccessFile;
import java.nio.MappedByteBuffer;
import java.nio.channels.FileChannel;
import java.util.logging.*;

import org.apache.jk.core.Msg;
import org.apache.jk.core.MsgContext;
import com.sun.grizzly.util.IntrospectionUtils;

/** Shm implementation using JDK1.4 nio.
 *
 *
 * @author Costin Manolache
 */
public class Shm14 extends Shm {
    
    
    // Not ready yet.
    
    private static Logger log=
        Logger.getLogger( Shm14.class.getName() );
    
    MappedByteBuffer bb;

    public void init() {
        try {
            RandomAccessFile f=new RandomAccessFile( file, "rw" );
            FileChannel fc=f.getChannel();
            
            bb=fc.map( FileChannel.MapMode.READ_WRITE, 0, f.length());
        } catch( IOException ex ) {
            ex.printStackTrace();
        }
    }

    public void dumpScoreboard(String file) {
        // We can only sync with our backing store.
        bb.force();
        // XXX we should copy the content to the file
    }

    public void resetScoreboard() throws IOException {
        // XXX Need to write the head
    }


    public  int invoke(Msg msg, MsgContext ep )
        throws IOException
    {
        if (log.isLoggable(Level.FINEST))
            log.finest("ChannelShm14.invoke: "  + ep );

        // 
        
        return 0;
    }    

    public void initCli() {
    }

    public static void main( String args[] ) {
        try {
            Shm14 shm=new Shm14();

            if( args.length == 0 ||
                ( "-?".equals(args[0]) ) ) {
                shm.setHelp( true );
                return;
            }

            IntrospectionUtils.processArgs( shm, args);
            shm.execute();
        } catch( Exception ex ) {
            ex.printStackTrace();
        }
    }

}