December 2011
Intermediate to advanced
485 pages
15h 47m
English
Content preview from OS X and iOS Kernel ProgrammingBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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The Kernel Library: libkern
The runtime support and base classes on which the I/O Kit is built are implemented in a library known as libkern. The libkern library provides support that makes up for much of the functionality that is excluded in the embedded C++ language. The libkern library defines a class known as OSObject, which provides the base class that is used by all I/O Kit classes. Since the base driver class IOService is a subclass of OSObject, the main class of a driver will also be derived from OSObject. Any class that is derived from OSObject gets the following functionality:
- Runtime Type Information, which is implemented through custom macros provided by libkern. These macros provide functionality that includes
- Type introspection, ...
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