Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Open Source License 

import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.locks.ReentrantReadWriteLock;

public class Main {
    private static ConcurrentHashMap<String, ReentrantReadWriteLock> fileLocks = new ConcurrentHashMap();

    private static ReentrantReadWriteLock getLock(String path) {
        ReentrantReadWriteLock lock = (ReentrantReadWriteLock) fileLocks.get(path);
        if (lock == null) {
            lock = new ReentrantReadWriteLock();
            ReentrantReadWriteLock oldLock = (ReentrantReadWriteLock) fileLocks.putIfAbsent(path, lock);
            if (oldLock != null) {
                lock = oldLock;
            }
        }

        return lock;
    }
}