Rstudio frozen -- how to kill/restart?

Rstudio got stuck evaluating something, but I don’t see any “stop” button for the console.
Attempting to quit Rstudio, gives message “Quitting Rstuido” but with the bar just circling around endlessly.
How do i kill the process so I can restart Rstudio?

Thanks!

pkill rsudio
from terminal does the trick