去故就新 Java线程新同步机制

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发表于：2011-11-29 10:07

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作者：yuyiming1986 来源：51Testing软件测试网采编

　　（3）测试代码：

import java.util.concurrent.locks.Condition;

import java.util.concurrent.locks.Lock;

import java.util.concurrent.locks.ReentrantLock;

class GlobalV{

public final static Lock locker = new ReentrantLock();

public final static Condition cond = locker.newCondition();

public static boolean to_proceed = false;

}

class Response extends Thread{

public void run(){

while(true){

GlobalV.locker.lock();

try{

while(!GlobalV.to_proceed){

GlobalV.cond.await();

}

System.out.println("Response:finish a job");

GlobalV.to_proceed = false;

}catch(Exception e){

e.printStackTrace();

}finally{

GlobalV.locker.unlock();

}

class Request extends Thread{

public void run(){

while(true){

GlobalV.locker.lock();

try{

GlobalV.to_proceed = true;

GlobalV.cond.signalAll();

System.out.println("Request:send a job to Response");

}finally{

GlobalV.locker.unlock();

}

try {

Thread.sleep(2000);

} catch (InterruptedException e) {

e.printStackTrace();

}

public class Test6 {

public static void main(String[] args) {

Request req = new Request();

Response res = new Response();

req.start();

res.start();

}

　　输出：

Request:send a job to Response
Response:finish a job
Request:send a job to Response
Response:finish a job
Request:send a job to Response
Response:finish a job
Request:send a job to Response
Response:finish a job

53/5<1 234 5 >

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