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ProdcuceCosumer2.java
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79 lines (67 loc) · 1.74 KB
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import java.util.LinkedList;
import java.util.List;
import java.util.Random;
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
/**
* Lock & Condition
* 1.Lock.lock(); Lock.unlock();
* 2.Condition.await(); Condition.signal();
*/
public class ProdcuceCosumer2 {
private static final int MAX = 100;
private static final Random random = new Random();
private static List<Object> queue = new LinkedList<Object>();
private static Lock lock = new ReentrantLock();
private static Condition notFullCondition = lock.newCondition();
private static Condition notEmptyCondition = lock.newCondition();
public static void main(String[] args) {
new Producer().start();
new Comsumer().start();
}
static class Producer extends Thread{
@Override
public void run() {
while(true) {
lock.lock();
try {
if (queue.size() == MAX){
notFullCondition.await();
} else {
Object o = new Object();
if (queue.add(o)) {
System.out.println("Producer produce 1 object , the size of the queue is : " + queue.size());
}
notEmptyCondition.signal();
}
} catch (Exception e) {
e.printStackTrace();
} finally {
lock.unlock();
}
}
}
}
static class Comsumer extends Thread{
@Override
public void run() {
while(true) {
lock.lock();
try {
if (queue.size() == 0){
notEmptyCondition.await();
} else {
queue.remove(0);
System.out.println("Consumer comsume 1 object , the size of the queue is : " + queue.size());
notFullCondition.signal();
}
} catch (Exception e) {
e.printStackTrace();
} finally {
lock.unlock();
}
}
}
}
}