Harris Corner Detector on GPU

Dear all,
i am looking for a function that implements the Harris Corner Detection Algorithm efficiently on the GPU.
I have found that OpenCV provides me with the gpu module, and there is a function for Harris algorithm, but i cannot find anywhere an example or a code to help me.

Could you please recommend me examples or any ideas of using the gpu module of Opencv or other libraries to implement the Harris algorithm on gpu?

Thank you in advance!