C++多线程框架-----Mutex互斥和Sem信号量

class CMutex  
{  
    public:  
        CMutex(const char *pName = NULL);  //初始化锁  
        ~CMutex();  
        virtual bool Lock()=0;       //锁操作，纯虚函数  
        virtual bool UnLock()=0;  //解锁操作，纯虚函数  
        const char * getName(void) const {  
                return mutex_name;  
            }  
    protected:  
        char       *mutex_name;  //锁名字  
};  

class CCountingSem  
{  
    public:  
        typedef enum {  
                 kTimeout,  
             kForever  
            }Mode;                       
        CCountingSem();     //初始化信号量  
        ~CCountingSem();  
         virtual bool                Get() = 0;  //接收信号量  
        virtual bool                Post(void) = 0;   //发送信号量  
};  

class COperatingSystemFactory  
{  
    public:  
        static COperatingSystem *newOperatingSystem();  
        static CCountingSem  *newCountingSem(unsigned int init=0); //参数是信号量的初始值，一般为0  
        static CMutex      *newMutex(const char *pName=NULL);  
};