基于java中BlockingQueue的使用介绍

//默认包
import java.util.concurrent.*;

import base.MyRunnable;

public class Test
{
    public static void main(String[] args)
    {
        BlockingQueue<Integer> queue = new LinkedBlockingQueue<Integer>();
        java.lang.Runnable r = new MyRunnable(queue);
        Thread t = new Thread(r);
        t.start();

        while(true)
        {
            try
            {
                while(true)
                {
                    for(int i =0;i < 10000;i++)
                    {
                        queue.offer(i);
                    }
                }
            }
            catch ( Exception e)
            {
                e.printStackTrace();
            }
        }
    }
}

 
//需要添加的包
package base;

import java.lang.Runnable;
import java.util.concurrent.*;
import java.util.*;

public class MyRunnable implements Runnable
{
    public MyRunnable(BlockingQueue<Integer> queue)
    {
        this.queue = queue;
    }
    public void run()
    {
        Date d = new Date();
        long starttime = d.getTime();
        System.err.println(starttime);
        int count = 0;
        while(true)
        {
            try
            {
                Integer i = this.queue.poll();
                if(i != null)
                {
                    count ++;
                }
                if(count == 100000)
                {
                    Date e = new Date();
                    long endtime = e.getTime();
                    System.err.println(count);
                    System.err.println(endtime);
                    System.err.print(endtime - starttime);
                    break;
                }

            }
            catch (Exception e)
            {

            }
        }
    }
    private BlockingQueue<Integer> queue;
}

public E poll() {
        final AtomicInteger count = this.count;
        if (count.get() == 0)
            return null;
        E x = null;
        int c = -1;
        final ReentrantLock takeLock = this.takeLock;
        takeLock.lock();
        try {
            if (count.get() > 0) {
                x = extract();
                c = count.getAndDecrement();
                if (c > 1)
                    notEmpty.signal();
            }
        } finally {
            takeLock.unlock();
        }
        if (c == capacity)
            signalNotFull();
        return x;
    }

public boolean offer(E e) {
        if (e == null) throw new NullPointerException();
        final AtomicInteger count = this.count;
        if (count.get() == capacity)
            return false;
        int c = -1;
        final ReentrantLock putLock = this.putLock;
        putLock.lock();
        try {
            if (count.get() < capacity) {
                insert(e);
                c = count.getAndIncrement();
                if (c + 1 < capacity)
                    notFull.signal();
            }
        } finally {
            putLock.unlock();
        }
        if (c == 0)
            signalNotEmpty();
        return c >= 0;
    }