/*
  This file is part of JOP, the Java Optimized Processor
    see <http://www.jopdesign.com/>

  Copyright (C) 2008-2012, Martin Schoeberl (martin@jopdesign.com)

  This program is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.

  This program 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 for more details.

  You should have received a copy of the GNU General Public License
  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package scopeuse;

import java.io.IOException;
import java.io.OutputStream;

import javax.microedition.io.Connector;
import javax.realtime.PeriodicParameters;
import javax.realtime.PriorityParameters;
import javax.realtime.RelativeTime;
import javax.safetycritical.*;
import javax.safetycritical.annotate.Level;
import javax.safetycritical.annotate.Phase;
import javax.safetycritical.annotate.SCJAllowed;
import javax.safetycritical.annotate.SCJRestricted;
import javax.safetycritical.io.SimplePrintStream;

/**
 * Test nested private memories
 * 
 * @author Martin Schoeberl
 * 
 */
public class InOutParameter extends Mission implements Safelet {

	// work around...
	static InOutParameter single;

	static SimplePrintStream out;
	
	@Override
	@SCJAllowed(Level.SUPPORT)
	@SCJRestricted(phase = Phase.INITIALIZATION)
	public void initializeApplication() {
		// TODO Auto-generated method stub
		
	}

	// From Mission
	@Override
	protected void initialize() {

		OutputStream os = null;
		try {
			os = Connector.openOutputStream("console:");
		} catch (IOException e) {
			throw new Error("No console available");
		}
		out = new SimplePrintStream(os);

		PeriodicEventHandler peh = new PeriodicEventHandler(
				new PriorityParameters(11), new PeriodicParameters(
						new RelativeTime(0, 0), new RelativeTime(500, 0)),
				new StorageParameters(10000, null), 500) {
			
			int cnt;

			public void handleAsyncEvent() {
				
				InParam ip = new InParam();
				OutParam op = new OutParam();
				op.sb = new StringBuilder(30);
				
				Worker w = new Worker(ip, op);
				
				out.println("Ping " + cnt);
				++cnt;

				// Generate more garbage
				for (int i=0; i<10; ++i) {
					// this would generate too much garbage in the initial private memory
					// w.run();
					ip.s = "iter ";
					ip.i = i;
					ManagedMemory.enterPrivateMemory(500, w);
					out.println(op.sb);
				}
				
				if (cnt > 5) {
					// getCurrentMission is not yet working
					single.requestTermination();
				}
			}
		};
		peh.register();
	}

	// Safelet methods
	@Override
	public MissionSequencer getSequencer() {
		// we assume this method is invoked only once
		StorageParameters sp = new StorageParameters(1000000, null);
		return new LinearMissionSequencer(new PriorityParameters(13), sp, false, this);
	}

	@Override
	public long missionMemorySize() {
		return 100000;
	}

	@Override
	public long immortalMemorySize() {
		return 1000;
	}

	/**
	 * Within the JOP SCJ version we use a main method instead of a command line
	 * parameter or configuration file.
	 * 
	 * @param args
	 */
	public static void main(String[] args) {
		single = new InOutParameter();
		JopSystem.startMission(single);
	}

}

class InParam {
	String s;
	int i;
}

class OutParam {
	StringBuilder sb;
}
class Worker implements Runnable {

	InParam in;
	OutParam out;
	
	public Worker(InParam in, OutParam out) {
		this.in = in;
		this.out = out;
	}
	
	@Override
	public void run() {
		// We generate garbage with string concatinuation
		String s = in.s + in.i;
		out.sb.setLength(0);
		// Hopefully this will not allocate a new buffer as it
		// shall be long enough
		out.sb.append(s);
		
	}
	
}