By Michael Trent; Drew McCormack
Read Online or Download Beginning Mac OS X programming : Description based on print version record. - "Programmer to programmer"--Cover PDF
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Additional info for Beginning Mac OS X programming : Description based on print version record. - "Programmer to programmer"--Cover
It then trends the data in several ways, including measuring the frequency of each specific frame in the call stack, and tracking the size of the call stack changes. For example, if a specific function call appears in half your program’s call stacks, Sampler calls that out. Sampler provides three different views of your data, each in its own tab: Browser, Outline, and Trace. The Outline tab displays the functions in your program’s call stack in an outline view sorted by frequency. You can use this tab to drill down and see where your program is spending its time.
26 Developer Tools Figure 2-4 Shark Apple provides a special set of tools called the Common Hardware Understanding Development Tools or CHUD Tools for short. These tools work very closely with your Mac’s hardware to diagnose performance problems. The CHUD Tools are available separately from Apple, but they also come with the other Mac OS X developer tools. com/tools/performance/. Of all the CHUD Tools from Apple, the most popular is Shark, as shown in Figure 2-5. Although part of the CHUD toolset, you will find Shark in /Developer/Applications/Performance Tools, not in the CHUD folder.
It is interesting to note that because QuickTime predates Mac OS X by ten years, its programming interface does not leverage Quartz 2D directly. QuickTime instead uses an older two-dimensional graphics library that is part of Carbon, called QuickDraw. The QuickDraw graphics library dates back to the earliest Macintosh computers, and through the years it has been extended to support color displays, offscreen drawing, color correction, and other features. Although QuickDraw has been replaced by Quartz 2D within most of Mac OS X, programmers must still use QuickDraw data structures to work with QuickTime.
Beginning Mac OS X programming : Description based on print version record. - "Programmer to programmer"--Cover by Michael Trent; Drew McCormack