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HoseeSemaphore.java
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78 lines (67 loc) · 2.43 KB
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package Thread;
import java.util.concurrent.Semaphore;
public class HoseeSemaphore {
int count = 0;
final Semaphore notFull = new Semaphore(10);
final Semaphore notEmpty = new Semaphore(0);
final Semaphore mutex = new Semaphore(1);
class Producer implements Runnable {
@Override
public void run() {
for (int i = 0; i < 10; i++) {
try {
Thread.sleep(3000);
} catch (Exception e) {
e.printStackTrace();
}
try {
notFull.acquire();//顺序不能颠倒，否则会造成死锁。
mutex.acquire();
count++;
System.out.println(Thread.currentThread().getName()
+ "生产者生产，目前总共有" + count);
} catch (Exception e) {
e.printStackTrace();
} finally {
mutex.release();
notEmpty.release();
}
}
}
}
class Consumer implements Runnable {
@Override
public void run() {
for (int i = 0; i < 10; i++) {
try {
Thread.sleep(3000);
} catch (InterruptedException e1) {
e1.printStackTrace();
}
try {
notEmpty.acquire();//顺序不能颠倒，否则会造成死锁。
mutex.acquire();
count--;
System.out.println(Thread.currentThread().getName()
+ "消费者消费，目前总共有" + count);
} catch (Exception e) {
e.printStackTrace();
} finally {
mutex.release();
notFull.release();
}
}
}
}
public static void main(String[] args) throws Exception {
HoseeSemaphore hosee = new HoseeSemaphore();
new Thread(hosee.new Producer()).start();
new Thread(hosee.new Consumer()).start();
new Thread(hosee.new Producer()).start();
new Thread(hosee.new Consumer()).start();
new Thread(hosee.new Producer()).start();
new Thread(hosee.new Consumer()).start();
new Thread(hosee.new Producer()).start();
new Thread(hosee.new Consumer()).start();
}
}