Condition实现生产者消费者

package com.cjw.concurrent.scxf.lock;

import com.cjw.dto.goods.GoodsDto;
import lombok.extern.slf4j.Slf4j;

import java.util.Date;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

/**
 * @author wucj
 * @date 2019-06-27 17:48
 **/
@Slf4j
public class GoodsLockService {
    int maxDeque = 5;
    private LinkedBlockingQueue storeLinkedBlockingQueue = new LinkedBlockingQueue();

    private Lock lock = new ReentrantLock();
    private Condition fullCondition = lock.newCondition();
    private Condition emptyCondition = lock.newCondition();

    public GoodsLockService(LinkedBlockingQueue storeLinkedBlockingQueue) {
        this.storeLinkedBlockingQueue = storeLinkedBlockingQueue;
    }

    public void producer(Long id){
        lock.lock();
        try{
            if(storeLinkedBlockingQueue.size()>=maxDeque){
                fullCondition.await();
            }
            emptyCondition.signalAll();
            GoodsDto dto = new GoodsDto();
            dto.setId(id);
            dto.setGoodsName("商品："+id);
            dto.setCreateTime(new Date());
            log.info("生成产品：{}",dto.toString());
            storeLinkedBlockingQueue.add(dto);
        }catch (Exception e){
            log.error("消费产品异常：{}",e);
        }finally {
            lock.unlock();
        }
    }

    public void consumer(){
        int zero = 0;
        lock.lock();
        try{
            if(storeLinkedBlockingQueue.size()<=zero){
                emptyCondition.await();
            }
            fullCondition.signalAll();
            GoodsDto dto = (GoodsDto) storeLinkedBlockingQueue.take();
            log.info("消费产品：{}",dto.toString());
        }catch (Exception e){
            log.error("消费产品异常：{}",e);
        }finally {
            lock.unlock();
        }
    }

}

package com.cjw.concurrent.scxf.lock;

import lombok.extern.slf4j.Slf4j;

/**
 * @author wucj
 * @date 2019-06-27 17:45
 **/
@Slf4j
public class ProducerLock implements Runnable{

    private GoodsLockService goodsLockService;

    public ProducerLock(GoodsLockService goodsLockService) {
        this.goodsLockService = goodsLockService;
    }


    @Override
    public void run() {
        int maxCount = 10;
        for(int i=0;i

 

转载于:https://my.oschina.net/wugong/blog/3067012