July 2005
Beginner
719 pages
19h 54m
English
Content preview from Beginning Mac OS® X Programming
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A.2. Chapter 2
A.2.1. Exercise 1 solution
Use the following steps to collect the sample:
Launch /Developer/Applications/Performance Tools/Sampler. The program starts but no windows appear on-screen yet.
Choose File
New. A dialog appears allowing you to specify the program you want to sample.Click the Set button next to the Executable text field. This brings up a standard open panel.
Select /Applications/Stickies in the Open panel and click the Open button. The Executable text field will be filled with the application's path.
Click OK to dismiss the dialog. A Sampler window like the one shown in Figure A-1 appears. Notice the three tabs: Browser, Outline, and Trace. The Browser tab, containing empty Browser and Call Stack views, is selected.
Figure A.1. Figure A-1
Click the Launch & Record button in the Sampler window's upper-right corner. The Stickies application appears in the Dock, and its windows appear behind the Sampler application.
Let Stickies run for a few seconds and click the Stop Recording button. Sampler's Browser and Call Stack views change to display Stickies' call stack information.
The browser area shows a tree containing all the frames recorded by Sampler. The Call Stack table displays the most commonly occurring backtrace that includes the frame selected in the browser. ...
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