/**
* Copyright (c) 2005-2011 by Appcelerator, Inc. All Rights Reserved.
* Licensed under the terms of the Eclipse Public License (EPL).
* Please see the license.txt included with this distribution for details.
* Any modifications to this file must keep this entire header intact.
*/
package org.python.pydev.debug.model.remote;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.net.Socket;
import java.util.ArrayList;
import java.util.List;
/**
* Writer writes debugger commands to the network. Use postCommand to put new
* ones in queue.
*/
public class DebuggerWriter implements Runnable {
/**
* connection socket
*/
private Socket socket;
/**
* a list of RemoteDebuggerCommands
*/
private List<AbstractDebuggerCommand> cmdQueue = new ArrayList<AbstractDebuggerCommand>();
private OutputStreamWriter out;
/**
* Volatile, as multiple threads may ask it to be 'done'
*/
private volatile boolean done = false;
/**
* Lock object for sleeping.
*/
private Object lock = new Object();
public DebuggerWriter(Socket s) throws IOException {
socket = s;
out = new OutputStreamWriter(s.getOutputStream());
}
/**
* Add command for processing
*/
public void postCommand(AbstractDebuggerCommand cmd) {
synchronized (cmdQueue) {
cmdQueue.add(cmd);
}
}
public void done() {
this.done = true;
}
/**
* Loops and writes commands to the output
*/
public void run() {
while (!done) {
AbstractDebuggerCommand cmd = null;
synchronized (cmdQueue) {
if (cmdQueue.size() > 0) {
cmd = (AbstractDebuggerCommand) cmdQueue.remove(0);
}
}
try {
if (cmd != null) {
cmd.aboutToSend();
out.write(cmd.getOutgoing());
out.write("\n");
out.flush();
}
synchronized (lock) {
Thread.sleep(100);
}
} catch (InterruptedException e) {
done = true;
} catch (IOException e1) {
done = true;
}
if ((socket == null) || !socket.isConnected()) {
done = true;
}
}
}
}