title: How to log all methods used in iOS app
body: <p>I'm taking over the development of an iPad app for a client. There's a substantial amount of work that's already been done and I'm trying to piece together how the whole thing is designed to run.</p>
  
  <p>One of the things I'd like to do is log which methods get called when the app runs. I've seen a custom DTrace script that's meant to log all methods from startup, but when I run it in Instruments I get no results.</p>
  
  <p>What's the best way of logging the methods?</p>