title: How to use MacOS Shark to profile my application?
body: <p>I have a XCode project. I can build and debug with it. 
  Is it possible for me to use Shark to do profiling of my application (e.g. find out what % of the time spent on what method? How many objects are created and destroyed? Where does each object created?</p>
  
  <p>Thank you.</p>