ProcessMonitor.java

/*
 * This file is part of FTB Launcher.
 *
 * Copyright © 2012-2016, FTB Launcher Contributors <https://github.com/Slowpoke101/FTBLaunch/>
 * FTB Launcher is licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package net.ftb.tools;

import lombok.Getter;
import lombok.Setter;
import net.ftb.log.Logger;
import net.ftb.util.OSUtils;

public class ProcessMonitor implements Runnable
{

	private final Process proc;
	private final Runnable onComplete;
	@Getter
	@Setter
	long pid;

	private volatile boolean complete = false;

	private ProcessMonitor (Process proc, Runnable onComplete)
	{
		this.proc = proc;
		this.onComplete = onComplete;
		this.pid = OSUtils.getPID(proc);
	}

	public void run ()
	{
		try
		{
			proc.waitFor();
			Logger.logInfo("MC process exited. return value: " + proc.exitValue());
		}
		catch (InterruptedException e)
		{
			Logger.logError("ProcessMonitor interrupted", e);
		}
		complete = true;
		onComplete.run();
	}

	public static ProcessMonitor create (Process proc, Runnable onComplete)
	{
		ProcessMonitor processMonitor = new ProcessMonitor(proc, onComplete);
		Thread monitorThread = new Thread(processMonitor);
		monitorThread.start();
		return processMonitor;
	}

	public void stop ()
	{
		if (proc != null)
		{
			proc.destroy();
		}
	}

}