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package dev.wenbo.TIJ;

import java.util.concurrent.locks.Lock;

import java.util.concurrent.locks.ReadWriteLock;

import java.util.concurrent.locks.ReentrantLock;

public class MutexEvenGenerator extends IntGenerator{

private int currentEvenValue=0;

private Lock lock=new ReentrantLock();

@Override

public int next() {

lock.lock();

try{

++currentEvenValue; //危险操作

Thread.yield();

++currentEvenValue;

return currentEvenValue;

}finally {

lock.unlock();

}

public static void main(String[] args) {

EvenChecker.test(new MutexEvenGenerator());

}