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标题:
多线程之Contidion
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作者:
Synaric
时间:
2015-10-3 14:27
标题:
多线程之Contidion
Condition,Condition 将 Object 监视器方法(wait、notify 和 notifyAll)分解成截然不同的对象,以便通过将这些对象与任意 Lock 实现组合使用,为每个对象提供多个等待 set (wait-set)。其中,Lock 替代了 synchronized 方法和语句的使用,Condition 替代了 Object 监视器方法的使用。
public class ThreadTest {
public static void main(String[] args) {
final Business business = new Business();
new Thread(new Runnable() {
@Override
public void run() {
threadExecute(business, "sub");
}
}).start();
threadExecute(business, "main");
}
public static void threadExecute(Business business, String threadType) {
for(int i = 0; i < 100; i++) {
try {
if("main".equals(threadType)) {
business.main(i);
} else {
business.sub(i);
}
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
class Business {
private boolean bool = true;
private Lock lock = new ReentrantLock();
private Condition condition = lock.newCondition();
public /*synchronized*/ void main(int loop) throws InterruptedException {
lock.lock();
try {
while(bool) {
condition.await();//this.wait();
}
for(int i = 0; i < 100; i++) {
System.out.println("main thread seq of " + i + ", loop of " + loop);
}
bool = true;
condition.signal();//this.notify();
} finally {
lock.unlock();
}
}
public /*synchronized*/ void sub(int loop) throws InterruptedException {
lock.lock();
try {
while(!bool) {
condition.await();//this.wait();
}
for(int i = 0; i < 10; i++) {
System.out.println("sub thread seq of " + i + ", loop of " + loop);
}
bool = false;
condition.signal();//this.notify();
} finally {
lock.unlock();
}
}
}
复制代码
Condition是被绑定到Lock上的,要创建一个Lock的Condition必须用newCondition()方法。
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