Viewing Threads in the Debug Area
With the debug area open, run your application.
Pause your application’s execution, or wait for your code to stop at a breakpoint.
Choose a thread from the pop-up menu in the debug bar.
Examine the corresponding source or assembly code.
The debug area lets you examine the threads and stacks of a program being debugged. When you select a thread or a stack within a thread in the debug bar, Xcode displays the corresponding source file or assembly code in the main editor.
The screenshot shows the debug area while choosing a thread and a stack frame to examine.
© 2012 Apple Inc. All Rights Reserved. (Last updated: 2012-09-19)