java编程思想并发学习笔记（rocket and rockets）

TestBlockingQueue.java

package com.test.concurrent;import java.util.concurrent.ArrayBlockingQueue;import java.util.concurrent.BlockingQueue;import java.util.concurrent.LinkedBlockingQueue;import java.util.concurrent.SynchronousQueue;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;public class TestBlockingQueue {static void getKey(){try {(new BufferedReader(new InputStreamReader(System.in))).readLine();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();throw new RuntimeException(e);}}static void getKey(String msg){System.out.println(msg);getKey();}static void test(String msg, BlockingQueue<LiftOff> queue){System.out.print(msg);LiftOffRunner runner=new LiftOffRunner(queue);Thread t=new Thread(runner);t.start();for(int i=0;i<5;i++){runner.add(new LiftOff(5));}getKey("Press 'Enter'("+msg+")");t.interrupt();System.out.println("finished "+msg+" test");}public static void main(String[] args) {// TODO Auto-generated method stubtest("LinkedBlockingQueue",new LinkedBlockingQueue<LiftOff>());test("ArrayBlockingQueue",new ArrayBlockingQueue<LiftOff>(3));test("SynchronousQueue",new SynchronousQueue<LiftOff>());}}class LiftOffRunner implements Runnable{private BlockingQueue<LiftOff> rockets;public LiftOffRunner(BlockingQueue<LiftOff> queue){this.rockets=queue;}public void add(LiftOff lo){try{rockets.put(lo);}catch(InterruptedException e){System.out.println("interrupted during put()");}}@Overridepublic void run() {// TODO Auto-generated method stubwhile(!Thread.interrupted()){LiftOff rocket;try {rocket = rockets.take();rocket.run();} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}}System.out.println("LiftOff Runner Exiting!!");}}

LiftOff.java

package com.test.concurrent;public class LiftOff implements Runnable {static int taskCount=0;private final int id=taskCount++;protected int countDown=10;public LiftOff(){}public LiftOff(int countDown){this.countDown=countDown;}public String status(){return "#"+id+"("+(countDown==0?"LiftOff":countDown)+"), ";}@Overridepublic void run() {// TODO Auto-generated method stubwhile(countDown-->0){System.out.print(status());Thread.yield();}}}

输出为：

LinkedBlockingQueuePress 'Enter'(LinkedBlockingQueue)
#0(4), #0(3), #0(2), #0(1), #0(LiftOff), #1(4), #1(3), #1(2), #1(1), #1(LiftOff), #2(4), #2(3), #2(2), #2(1), #2(LiftOff), #3(4), #3(3), #3(2), #3(1), #3(LiftOff), #4(4), #4(3), #4(2), #4(1), #4(LiftOff), 
finished LinkedBlockingQueue test
ArrayBlockingQueue#5(4), #5(3), #5(2), #5(1), #5(LiftOff), Press 'Enter'(ArrayBlockingQueue)
#6(4), #6(3), #6(2), #6(1), #6(LiftOff), #7(4), #7(3), #7(2), #7(1), #7(LiftOff), #8(4), #8(3), #8(2), #8(1), #8(LiftOff), #9(4), #9(3), #9(2), #9(1), #9(LiftOff), java.lang.InterruptedException
at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.reportInterruptAfterWait(Unknown Source)
at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(Unknown Source)
at java.util.concurrent.LinkedBlockingQueue.take(Unknown Source)
at com.test.concurrent.LiftOffRunner.run(TestBlockingQueue.java:65)
at java.lang.Thread.run(Unknown Source)


java.lang.InterruptedException
at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.reportInterruptAfterWait(Unknown Source)
at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(Unknown Source)
at java.util.concurrent.ArrayBlockingQueue.take(Unknown Source)
at com.test.concurrent.LiftOffRunner.run(TestBlockingQueue.java:65)
at java.lang.Thread.run(Unknown Source)
finished ArrayBlockingQueue test
SynchronousQueue#10(4), #10(3), #10(2), #10(1), #10(LiftOff), #11(4), #11(3), #11(2), #11(1), #11(LiftOff), #12(4), #12(3), #12(2), #12(1), #12(LiftOff), #13(4), #13(3), #13(2), #13(1), #13(LiftOff), Press 'Enter'(SynchronousQueue)
#14(4), #14(3), #14(2), #14(1), #14(LiftOff), 
java.lang.InterruptedException
at java.util.concurrent.SynchronousQueue.take(Unknown Source)
at com.test.concurrent.LiftOffRunner.run(TestBlockingQueue.java:65)
at java.lang.Thread.run(Unknown Source)
finished SynchronousQueue test