threadpool.java

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package com.hxyh.sanny.mms.cmcc.base.thread;

public class ThreadPool
{

    private ObjectFIFO idleWorkers;
    private ThreadPoolWorker workerList[];

    public ThreadPool(int numberOfThreads)
    {
        numberOfThreads = Math.max(1, numberOfThreads);
        idleWorkers = new ObjectFIFO(numberOfThreads);
        workerList = new ThreadPoolWorker[numberOfThreads];
        for(int i = 0; i < workerList.length; i++)
            workerList[i] = new ThreadPoolWorker(idleWorkers);

    }

    public ThreadPool(int numberOfThreads, int priority)
    {
        numberOfThreads = Math.max(1, numberOfThreads);
        idleWorkers = new ObjectFIFO(numberOfThreads);
        workerList = new ThreadPoolWorker[numberOfThreads];
        for(int i = 0; i < workerList.length; i++)
            workerList[i] = new ThreadPoolWorker(idleWorkers, priority);

    }

    public void setTimeout(long l)
    {
      for(int i = 0; i < workerList.length; i++)
           workerList[i].setTimeout(l);
    }

    public void execute(Runnable target)
        throws InterruptedException
    {
      // block (forever) until a worker is available
      ThreadPoolWorker worker = (ThreadPoolWorker)idleWorkers.remove();
      //System.out.println("Free Workers Num:"+idleWorkers.getSize()+"/"+idleWorkers.getCapacity());
       worker.process(target);
    }

    public void stopRequestIdleWorkers()
    {
        try
        {
            Object idle[] = idleWorkers.removeAll();
            for(int i = 0; i < idle.length; i++)
                ((ThreadPoolWorker)idle[i]).stopRequest();

        }
        catch(InterruptedException x)
        {
            Thread.currentThread().interrupt();
        }
    }

    public void stopRequestAllWorkers()
    {
        stopRequestIdleWorkers();
        try
        {
            Thread.sleep(250L);
        }
        catch(InterruptedException interruptedexception) { }
        for(int i = 0; i < workerList.length; i++)
            if(workerList[i].isAlive())
                workerList[i].stopRequest();

    }
}