What is the best way to exit out of a loop after an elapsed time of 30ms in C++

Question

What is the best way to exit out of a loop as close to 30ms as possible in C++. Polling boost:microsec_clock ? Polling QTime ? Something else?

Something like:

Answer 1

While this does not answer the question, it might give another look at the solution. What about placing the simulation code and user interface in different threads? If you use Qt, periodic update can be realized using a timer or even QThread::msleep(). You can adapt the threaded Mandelbrot example to suit your need.