Processor.java

/*
 * Created by Andrey Cherkashin (acherkashin)
 * http://acherkashin.me
 * 
 * License
 * Copyright (c) 2015 Andrey Cherkashin
 * The project released under the MIT license: http://opensource.org/licenses/MIT
 */
package ragefist.core;

import java.util.LinkedList;

/**
 *
 * @author acherkashin
 */
public class Processor
{
	private final LinkedList<ProcessorTask> _tasksQueue = new LinkedList<>();
	private final ProcessorStatistic _statistic = new ProcessorStatistic();
	
	public static class ProcessorStatistic {
		private int _maxNewTasksQueue = 0;
		private int _sumTasks = 0;
		private long _sumTasksExecutionTime;
		
		public final int getMaxNewTasksQueue() { return _maxNewTasksQueue; }
		public final int getSumTasks() { return _sumTasks; }
		public final float getAverateExecutionTime() { return _sumTasks == 0 ? 0 : ((float)_sumTasksExecutionTime / 1000.0f / (float)_sumTasks); }
	}
	
	// ---------------------------------------------------------------------- //
	// PUBLIC
	// ---------------------------------------------------------------------- //
	
	public ProcessorStatistic getStatistic() {
		return _statistic;
	}
	
	public void addTask(ProcessorTask task) {
		synchronized(_tasksQueue) {
			_tasksQueue.add(task);
		}
	}
	
	public int getTasksCount() {
		synchronized(_tasksQueue) {
			return _tasksQueue.size();
		}
	}
	
	public int processTasks() {
		synchronized(_tasksQueue) {
			// statistic
			_statistic._maxNewTasksQueue = Math.max(_statistic._maxNewTasksQueue, _tasksQueue.size());
			
			// processing
			while(_tasksQueue.isEmpty() == false) {
				_statistic._sumTasks++;
				_tasksQueue.poll().execute(this);
			}
		}
		return 1;
	}
}