class member functions in C + + as a threaded entry

Searched a circle of answers, basically is the start of the thread when the pass through the this pointer, the thread function of the internal and then the strong turn of the solution. May seem a little awkward.

The compiler does not allow casts, so it is implemented by union.

Union
{
  void * (*TRFUNC) (void *);
  void * (Lock_client_cache::* Memfunc) ();
} func;

Func.memfunc = &lock_client_cache::d o_thread;
pthread_t pid;
Pthread_create (PID, 0, Func.trfunc, this);
Pthread_detach (PID);

Do_thread is a Non-static class member function with no parameters. The POSIX library returns void if a Void*,win32 thread is returned.

* This method applies to situations where you only need to pass the this pointer, and if you need to pass more than one parameter, keep the old method.