gate.java

< Java多线程设计模式>> 一书

public class Gate {
    private int counter = 0;
    private String name = "Nobody";
    private String address = "Nowhere";
    private final Mutex mutex = new Mutex();
    public void pass(String name, String address) { // 并非synchronized
        mutex.lock();
        try {
            this.counter++;
            this.name = name;
            this.address = address;
            check();
        } finally {
            mutex.unlock();
        }
    }
    public String toString() { //