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java-multithread lock包更新至example10,lock包告一段落 · JavaDevelopRep/java-learning@4b6aac1 · GitHub

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forked from brianway/java-learning

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java-multithread lock包更新至example10,lock包告一段落
1 parent cebf798 commit 4b6aac1

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‎java-base/src/main/java/com/brianway/learning/java/base/Boxing.java‎

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*/
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/**
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* TODO
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* 待理解。
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* 应该是考装箱和拆箱
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*/

‎java-multithread/src/main/java/com/brianway/learning/java/multithread/lock/example10/Run10_ReadWriteLockBegin1.java‎

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package com.brianway.learning.java.multithread.lock.example10;
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/**
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* Created by Brian on 2016/4/15.
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*/
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/**
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* P236
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* 类ReentrantReadWriteLock的使用：读读共享
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*/
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public class Run10_ReadWriteLockBegin1 {
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public static void main(String[] args) {
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final Service1 service = new Service1();
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Thread a = new Thread(){
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@Override
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public void run() {
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service.read();
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}
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};
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Thread b = new Thread(){
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@Override
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public void run() {
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service.read();
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}
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};
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a.setName("A");
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a.start();
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b.setName("B");
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b.start();
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}
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}
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/*
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输出：
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获得读锁A 1460726504907
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获得读锁B 1460726504908
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*/

‎java-multithread/src/main/java/com/brianway/learning/java/multithread/lock/example10/Run10_ReadWriteLockBegin2.java‎

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package com.brianway.learning.java.multithread.lock.example10;
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/**
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* Created by Brian on 2016/4/15.
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*/
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/**
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* P238
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* 类ReentrantReadWriteLock的使用：写写互斥
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*/
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public class Run10_ReadWriteLockBegin2 {
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public static void main(String[] args) {
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final Service2 service = new Service2();
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Thread a = new Thread(){
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@Override
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public void run() {
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service.write();
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}
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};
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Thread b = new Thread(){
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@Override
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public void run() {
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service.write();
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}
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};
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a.setName("A");
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a.start();
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b.setName("B");
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b.start();
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}
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}
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/*
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输出：
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获得写锁A 1460727106721
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获得写锁B 1460727116721
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*/

‎java-multithread/src/main/java/com/brianway/learning/java/multithread/lock/example10/Run10_ReadWriteLockBegin3.java‎

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package com.brianway.learning.java.multithread.lock.example10;
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/**
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* Created by Brian on 2016/4/15.
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*/
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/**
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* P238
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* 类ReentrantReadWriteLock的使用：读写互斥
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*/
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public class Run10_ReadWriteLockBegin3 {
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public static void main(String[] args) {
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final Service3 service = new Service3();
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Thread a = new Thread(){
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@Override
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public void run() {
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service.read();
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}
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};
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Thread b = new Thread(){
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@Override
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public void run() {
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service.write();
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}
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};
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a.setName("A");
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a.start();
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b.setName("B");
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b.start();
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}
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}
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/*
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输出：
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获得读锁 A 1460727280066
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获得写锁 B 1460727290067
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*/

‎java-multithread/src/main/java/com/brianway/learning/java/multithread/lock/example10/Run10_condition.java‎

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package com.brianway.learning.java.multithread.lock.example10;
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/**
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* Created by Brian on 2016/4/15.
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*/
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import java.util.concurrent.locks.Condition;
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import java.util.concurrent.locks.ReentrantLock;
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/**
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* P234
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* Condition实现顺序打印
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* 这里nextPrintWho的volatile关键词去掉也没什么影响
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*/
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public class Run10_condition {
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volatile private static int nextPrintWho =1;
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private static ReentrantLock lock = new ReentrantLock();
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final private static Condition conditionA = lock.newCondition();
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final private static Condition conditionB = lock.newCondition();
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final private static Condition conditionC = lock.newCondition();
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public static void main(String[] args) {
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Thread a = new Thread(){
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@Override
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public void run() {
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try {
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lock.lock();
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while (nextPrintWho != 1){
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conditionA.await();
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}
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for(int i=0;i<3;i++){
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System.out.println("ThreadA "+(i+1));
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}
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nextPrintWho =2;
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conditionB.signalAll();
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} catch (InterruptedException e) {
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e.printStackTrace();
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} finally {
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lock.unlock();
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}
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}
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};
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Thread b = new Thread(){
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@Override
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public void run() {
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try {
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lock.lock();
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while (nextPrintWho != 2){
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conditionB.await();
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}
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for(int i=0;i<3;i++){
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System.out.println("ThreadB "+(i+1));
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}
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nextPrintWho =3;
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conditionC.signalAll();
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} catch (InterruptedException e) {
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e.printStackTrace();
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} finally {
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lock.unlock();
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}
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}
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};
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Thread c = new Thread(){
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@Override
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public void run() {
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try {
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lock.lock();
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while (nextPrintWho != 3){
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conditionC.await();
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}
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for(int i=0;i<3;i++){
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System.out.println("ThreadC "+(i+1));
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}
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nextPrintWho = 1 ;
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conditionA.signalAll();
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} catch (InterruptedException e) {
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e.printStackTrace();
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} finally {
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lock.unlock();
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}
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}
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};
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Thread[] aArray = new Thread[5];
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Thread[] bArray = new Thread[5];
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Thread[] cArray = new Thread[5];
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for (int i = 0;i<5;i++){
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aArray[i] =new Thread(a);
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bArray[i] =new Thread(b);
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cArray[i] =new Thread(c);
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aArray[i].start();
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bArray[i].start();
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cArray[i].start();
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}
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}
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}
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/*
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输出：
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ThreadA 1
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ThreadA 2
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ThreadA 3
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ThreadB 1
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ThreadB 2
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ThreadB 3
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ThreadC 1
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ThreadC 2
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ThreadC 3
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ThreadA 1
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ThreadA 2
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ThreadA 3
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ThreadB 1
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ThreadB 2
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ThreadB 3
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ThreadC 1
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ThreadC 2
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ThreadC 3
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ThreadA 1
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ThreadA 2
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ThreadA 3
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ThreadB 1
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ThreadB 2
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ThreadB 3
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ThreadC 1
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ThreadC 2
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ThreadC 3
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ThreadA 1
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ThreadA 2
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ThreadA 3
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ThreadB 1
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ThreadB 2
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ThreadB 3
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ThreadC 1
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ThreadC 2
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ThreadC 3
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ThreadA 1
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ThreadA 2
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ThreadA 3
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ThreadB 1
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ThreadB 2
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ThreadB 3
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ThreadC 1
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ThreadC 2
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ThreadC 3
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*/

‎java-multithread/src/main/java/com/brianway/learning/java/multithread/lock/example10/Service1.java‎

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package com.brianway.learning.java.multithread.lock.example10;
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import java.util.concurrent.locks.ReentrantReadWriteLock;
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/**
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* Created by Brian on 2016/4/15.
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*/
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/**
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* TODO
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* 这里为什么用双try?
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* 以前不都是直接try catch finally的吗？
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*/
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public class Service1 {
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private ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
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public void read(){
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try {
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try {
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lock.readLock().lock();
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System.out.println("获得读锁"+ Thread.currentThread().getName()+" "+System.currentTimeMillis());
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Thread.sleep(10000);
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} finally {
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lock.readLock().unlock();
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}
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} catch (InterruptedException e) {
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e.printStackTrace();
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}
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}
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}

‎java-multithread/src/main/java/com/brianway/learning/java/multithread/lock/example10/Service2.java‎

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package com.brianway.learning.java.multithread.lock.example10;
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import java.util.concurrent.locks.ReentrantReadWriteLock;
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/**
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* Created by Brian on 2016/4/15.
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*/
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/**
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* TODO
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* 这里为什么用双try?
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* 以前不都是直接try catch finally的吗？
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*/
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public class Service2 {
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private ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
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public void write(){
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try {
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try {
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lock.writeLock().lock();
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System.out.println("获得写锁"+ Thread.currentThread().getName()+" "+System.currentTimeMillis());
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Thread.sleep(10000);
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} finally {
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lock.writeLock().unlock();
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}
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} catch (InterruptedException e) {
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e.printStackTrace();
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}
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}
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}

‎java-multithread/src/main/java/com/brianway/learning/java/multithread/lock/example10/Service3.java‎

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package com.brianway.learning.java.multithread.lock.example10;
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import java.util.concurrent.locks.ReentrantReadWriteLock;
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/**
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* Created by Brian on 2016/4/15.
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*/
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/**
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* TODO
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* 这里为什么用双try?
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* 以前不都是直接try catch finally的吗？
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*/
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public class Service3 {
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private ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
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public void read(){
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try {
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try {
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lock.readLock().lock();
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System.out.println("获得读锁 "+ Thread.currentThread().getName()+" "+System.currentTimeMillis());
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Thread.sleep(10000);
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} finally {
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lock.readLock().unlock();
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}
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} catch (InterruptedException e) {
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e.printStackTrace();
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}
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}
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public void write(){
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try {
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try {
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lock.writeLock().lock();
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System.out.println("获得写锁 "+ Thread.currentThread().getName()+" "+System.currentTimeMillis());
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Thread.sleep(10000);
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} finally {
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lock.writeLock().unlock();
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}
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} catch (InterruptedException e) {
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e.printStackTrace();
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}
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}
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}

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