RollCall

A lightweight audit for unbounded memory growth in swift.

###Overview Detecting and debugging memory issues (retain cycles, orphaned objects, etc) can be cumbersome. Instruments is a powerful tool, but can be be overwhelming for both you and your machine.

Most memory issues will exist classes whose implementation you own. RollCall tracks the creation of objects in your namespace and reports which ones are still in memory.

###High-Level Usage

1. Setup RollCall
2. Use your app for a while
3. Perform a RollCall and check for unexpected objects in memory

Usage

Somehwere early in your app's lifecycle, initailize with

RollCall.setup()

Sometime later on, hit a breakpoint and enter into the debugger

po NSObject.rollCall()

Roll Call will report how many of each object are in memory:

(lldb) po NSObject.rollCall()
Roll call:
  MyModelObject 1
  MyListViewController 1
  MyDetailViewController 1
  MyTableViewCell 4
  MyTabViewController 1
  MyNavController 2

Roll Call will report subclasses of the calling Class

(lldb) po UIViewController.rollCall()
Roll call:
  MyListViewController 1
  MyDetailViewController 1
  MyTabViewController 1
  MyNavController 2
  
(lldb) po MyDetailViewController.rollCall()
Roll call:
  MyDetailViewController 1