ThreadCreationCmp

package io.github.viscent.mtia.ch1;

import io.github.viscent.mtia.util.Tools;

public class ThreadCreationCmp {
    public static void main(String[] args) {
        Thread t;
        CountingTask ct = new CountingTask();

        //获取处理器个数
        final int numberofProceesors = Runtime.getRuntime().availableProcessors();
        for (int i = 0; i < 2 * numberofProceesors; i++) {
            t = new Thread(ct);
            t.start();
        }
        for (int i = 0; i < 2 * numberofProceesors; i++) {
            //以子类的方式创建线程
            t = new CountingThread();
            t.start();
        }
    }

    static class Counter {
        private int count = 0;

        public void increment() {
            count++;
        }

        public int value() {
            return count;
        }
    }

    static class CountingTask implements Runnable {
        private Counter counter = new Counter();

        @Override
        public void run() {
            for (int i = 0; i < 100; i++) {
                dosomething();
                counter.increment();
            }
            System.out.println("Countingrask:" + counter.value());
        }

        private void dosomething() {
            //使当前线程休眠随机时间
            Tools.randomPause(80);
        }
    }

    static class CountingThread extends Thread {
        private Counter counter = new Counter();

        @Override
        public void run() {
            for (int i = 0; i < 100; i++) {
                doSomething();
                counter.increment();
            }
            System.out.println("CountingThread:" + counter.value());
        }

        private void doSomething() {
            //使当前线程休眠随机时间
            Tools.randomPause(80);
        }
    }
}

多线程树中的一个类，因为源码里有没有，自己手打的。