/* Master of a basic master/slave example in Java */

/* Copyright (c) 2006-2014. The SimGrid Team.
 * All rights reserved.                                                     */

/* This program is free software; you can redistribute it and/or modify it
 * under the terms of the license (GNU LGPL) which comes with this package. */

package masterslave;
import org.simgrid.msg.Host;
import org.simgrid.msg.Msg;
import org.simgrid.msg.MsgException;
import org.simgrid.msg.Task;
import org.simgrid.msg.Process;;

public class Master extends Process {
	public Master(Host host, String name, String[]args) {
		super(host,name,args);
	} 
	public void main(String[] args) throws MsgException {
		if (args.length < 4) {
			Msg.info("Master needs 4 arguments");
			System.exit(1);
		}

		int tasksCount = Integer.valueOf(args[0]).intValue();		
		double taskComputeSize = Double.valueOf(args[1]).doubleValue();		
		double taskCommunicateSize = Double.valueOf(args[2]).doubleValue();

		int slavesCount = Integer.valueOf(args[3]).intValue();

		Msg.info("Hello! Got "+  slavesCount + " slaves and "+tasksCount+" tasks to process");

		for (int i = 0; i < tasksCount; i++) {
			Task task = new Task("Task_" + i, taskComputeSize, taskCommunicateSize); 
			//Msg.info("Sending \"" + task.getName()+ "\" to \"slave_" + i % slavesCount + "\"");
			task.send("slave_"+(i%slavesCount));
		}

		Msg.info("All tasks have been dispatched. Let's tell everybody the computation is over.");

		for (int i = 0; i < slavesCount; i++) {
			FinalizeTask task = new FinalizeTask();
			task.send("slave_"+(i%slavesCount));
		}

		Msg.info("Goodbye now!");
	}
}