/* -*- tab-width: 4 -*-
*
* Electric(tm) VLSI Design System
*
* File: IThreadPool.java
*
* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
*
* Electric(tm) 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.
*
* Electric(tm) 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 Electric(tm); see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, Mass 02111-1307, USA.
*/
package com.sun.electric.tool.util.concurrent.runtime.taskParallel;
import com.sun.electric.tool.util.concurrent.patterns.PTask;
public abstract class IThreadPool {
public static Integer NUM_THREADS = null;
/**
* start the thread pool
*/
public abstract void start();
/**
* shutdown the thread pool
*/
public abstract void shutdown() throws InterruptedException;
/**
* wait for termination
*
* @throws InterruptedException
*/
public abstract void join() throws InterruptedException;
/**
* Set thread pool to state sleep. Constraint: current State = started
*/
public abstract void sleep();
/**
* Wake up the thread pool. Constraint: current State = sleeps
*/
public abstract void weakUp();
/**
* trigger workers (used for the synchronization)
*/
public abstract void trigger();
/**
* add a task to the pool
*
* @param item
*/
public abstract void add(PTask item);
/**
* add a task to the pool
*
* @param item
*/
public abstract void add(PTask item, int threadId);
/**
*
* @return the current thread pool size (#threads)
*/
public abstract int getPoolSize();
}