Windows threading: _beginthread vs _beginthreadex vs CreateThread C++

Question

What\'s a better way to start a thread, _beginthread, _beginthreadx or CreateThread?

I\'m trying to determine what are the adv

Answer 1

This is the code at the core of _beginthreadex (see crt\src\threadex.c):

    /*
     * Create the new thread using the parameters supplied by the caller.
     */
    if ( (thdl = (uintptr_t)
          CreateThread( (LPSECURITY_ATTRIBUTES)security,
                        stacksize,
                        _threadstartex,
                        (LPVOID)ptd,
                        createflag,
                        (LPDWORD)thrdaddr))
         == (uintptr_t)0 )
    {
            err = GetLastError();
            goto error_return;
    }

The rest of _beginthreadex initializes per-thread data structure for CRT.

The advantage of using _beginthread* is that your CRT calls from thread will work correctly.