标签:wait [] sign interrupt thread imp 版本 art nal
synchronized版本public class Test { public static void main(String[] args) { Shared s = new Shared(); Thread t1 = new Thread(new Product(s)); Thread t2 = new Thread(new Consumer(s)); t1.start(); t2.start(); } } class Product implements Runnable { private final Shared s; public Product(Shared s) { this.s = s; } @Override public void run() { for (char i = 'A'; i < 'Z'; i++) { s.setChar(i); System.out.println("生产者生产了一个" + i); } } } class Consumer implements Runnable { private final Shared s; public Consumer(Shared s) { this.s = s; } @Override public void run() { char c; do{ c = s.getChar(); System.out.println("消费者消费了一个" + c); } while(c!='Y'); } } class Shared { private char ch; private volatile boolean writeable = true; public synchronized char getChar() { while(writeable) { try { wait(); } catch (InterruptedException e) { e.printStackTrace(); } } writeable = true; notify(); return ch; } public synchronized void setChar(char ch) { while(!writeable) { try { wait(); } catch (InterruptedException e) { e.printStackTrace(); } } writeable = false; this.ch = ch; notify(); } }
ReentrantLock版本
import java.util.concurrent.locks.Condition; import java.util.concurrent.locks.ReentrantLock; public class Test1 { public static void main(String[] args) { Shared1 s = new Shared1(); Thread t1 = new Thread(new Product1(s)); Thread t2 = new Thread(new Consumer1(s)); t1.start(); t2.start(); } } class Shared1 { private char c; private volatile boolean writeable = true; private final ReentrantLock lock = new ReentrantLock(); private final Condition condition = lock.newCondition(); public void setChar(char c) { lock.lock(); try { while (!writeable) { try { condition.await(); } catch (InterruptedException e) { e.printStackTrace(); } } writeable = false; condition.signal(); this.c = c; } finally { lock.unlock(); } } public char getChar() { lock.lock(); try { while(writeable) { try { condition.await(); } catch (InterruptedException e) { e.printStackTrace(); } } writeable = true; condition.signal(); return c; } finally { lock.unlock(); } } } class Product1 implements Runnable { private Shared1 s; public Product1(Shared1 s) { this.s = s; } @Override public void run() { for (char i = 'A'; i < 'Z'; i++) { s.setChar(i); System.out.println("生产者生产了一个" + i); } } } class Consumer1 implements Runnable { private Shared1 s; public Consumer1(Shared1 s) { this.s = s; } @Override public void run() { char c; do{ c = s.getChar(); System.out.println("消费者消费了一个" + c); } while(c != 'Y'); } }
使用阻塞队列实现的版本
import java.util.concurrent.ArrayBlockingQueue; public class MyBlockArray { public static final ArrayBlockingQueue<Character> arr = new ArrayBlockingQueue<>(26); public static void main(String[] args) { final MyBlockArray my = new MyBlockArray(); Thread t1 = new Thread(new Product3(my)); Thread t2 = new Thread(new Consumer3(my)); t1.start(); t2.start(); } } class Product3 implements Runnable { private MyBlockArray blockArray; public Product3(MyBlockArray blockArray) { this.blockArray = blockArray; } @Override public void run() { for (char i = 'A'; i <= 'Z'; i++) { try { blockArray.arr.put(i); } catch (InterruptedException e) { e.printStackTrace(); } System.out.println("生产者生产了一个" + i); } } } class Consumer3 implements Runnable { private MyBlockArray blockArray; public Consumer3(MyBlockArray blockArray) { this.blockArray = blockArray; } @Override public void run() { char c = 0; do { try { c = blockArray.arr.take(); System.out.println("消费者消费了一个" + c); } catch (InterruptedException e) { e.printStackTrace(); } } while(c != 'Z'); } }
标签:wait [] sign interrupt thread imp 版本 art nal
原文地址:http://blog.51cto.com/12222886/2070355