TTASLock， CLHLock和MSCLock的实现。Lock implementation是java多线程中保证原子性的重要方法之一。本程序实现了3种常用lock，每个文件中都包含了lock, unlock, islock方法。-TTASLock, CLHLock and MSCLock implementation. Lock implementation is multi-threaded java guarantee atomicity in one important way. T