By Amit Singh
Mac OS X was once published in March 2001, yet many elements, reminiscent of Mach and BSD, are significantly older. figuring out the layout, implementation, and workings of Mac OS X calls for exam of a number of applied sciences that vary of their age, origins, philosophies, and roles.
<b>Mac OS X Internals: A structures Approach</b> is the 1st publication that dissects the internals of the procedure, proposing an in depth photograph that grows incrementally as you learn. for instance, you'll examine the jobs of the firmware, the bootloader, the Mach and BSD kernel elements (including the method, digital reminiscence, IPC, and dossier method layers), the object-oriented I/O package driving force framework, consumer libraries, and different center items of software program. you'll learn the way those items attach and paintings internally, the place they originated, and the way they advanced. The ebook additionally covers a number of key parts of the Intel-based Macintosh computers.
A stable figuring out of procedure internals is immensely important in layout, improvement, and debugging for programmers of assorted ability degrees. approach programmers can use the booklet as a reference and to build a greater photograph of ways the center procedure works. program programmers can achieve a deeper knowing of the way their functions engage with the procedure. method directors and gear clients can use the ebook to harness the facility of the wealthy setting provided through Mac OS X. eventually, individuals of the home windows, Linux, BSD, and different Unix groups will locate the ebook important in evaluating and contrasting Mac OS X with their respective systems.
<b>Mac OS X Internals</b> specializes in the technical facets of OS X and is so packed with tremendous priceless info and programming examples that it'll certainly develop into a compulsory software for each Mac OS X programmer.
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Extra resources for Mac OS X Internals: A Systems Approach
0) is at its top left. Because a subview is positioned in its superview with respect to its superview’s coordinate system, a change in the bounds origin of the Bounds and Center | 13 Figure 1-4. A subview exactly covering its superview superview will change the apparent position of a subview. y += 10 Nothing happens to the superview’s size or position. But the subview has moved up and to the left so that it is flush with its superview’s top-left corner (Figure 1-5). 0), the subview now touches the superview’s top-left corner.
8, y:1) The bounds property of the view v1 is still unaffected, so the subview is still drawn in the same place relative to its superview; this means that the two views seem to have stretched horizontally together (Figure 1-7). No bounds or centers were harmed by the application of this transform! Methods are provided for transforming an existing transform. This operation is not commutative; that is, order matters. (That high school math is starting to come back 18 | Chapter 1: Views Figure 1-7.
Superview) Bounds and Center | 15 When setting a view’s position by setting its center, if the height or width of the view is not an integer (or, on a single-resolution screen, not an even integer), the view can end up misaligned: its point values in one or both dimensions are loca‐ ted between the screen pixels. This can cause the view to be displayed incorrectly; for example, if the view contains text, the text may be blurry. You can detect this situation in the Simulator by checking Debug → Color Misaligned Images.
Mac OS X Internals: A Systems Approach by Amit Singh