C++ using this pointer in constructors

Question

In C++, during a class constructor, I started a new thread with this pointer as a parameter which will be used in the thread extensively (say, call

Answer 1

Basically, what you need is two-phase construction: You want to start your thread only after the object is fully constructed. John Dibling answered a similar (not a duplicate) question yesterday exhaustively discussing two-phase construction. You might want to have a look at it.

Note, however, that this still leaves the problem that the thread might be started before a derived class' constructor is done. (Derived classes' constructors are called after those of their base classes.)

So in the end the safest thing is probably to manually start the thread:

class Thread { 
  public: 
    Thread();
    virtual ~Thread();
    void start();
    // ...
};

class MyThread : public Thread { 
  public:
    MyThread() : Thread() {}
    // ... 
};

void f()
{
  MyThread thrd;
  thrd.start();
  // ...
}