如何使`scoped_thread`用作成员变量？

Question

class scoped_thread
{
    std::thread t;
public:
    explicit scoped_thread( std::thread t_ ) :
        t( std::move( t_ ) )
    {
        if ( !t.joinable() )
            throw std::logic_error( "thread is not joinable" );
    }

    ~scoped_thread()
    {
        t.join();
    }
    scoped_thread( scoped_thread const& ) = delete;
    scoped_thread& operator=( scoped_thread const& ) = delete;
};

问题＆GT;我还应该为scoped_thread类定义什么，以便我可以将其用作成员变量之一，如下所示？

class T
{
...
   void printMe() {}
   void init()
   {
        m_thread = scoped_thread(std::thread(&T::printMe, this));
   }

private:
   scoped_thread m_thread;
};

或者我必须简单地初始化列表中的成员变量？我认为这不是好方法，因为调用函数将使用未初始化的成员变量。

class T
{
public:
   T() : m_thread(std::thread(&T::printMe, this)) {}
...
   void printMe() {
          // potential use some uninitialized member variables
   }
   void init()
   {
   }

private:
   scoped_thread m_thread;
};