Chapter 17
Concurrent Programming
In computer science, concurrent processing refers to logical control flows (implemented in software) whose execution overlaps in time. Concurrent processing can occur at many different levels of a computer system, from the hardware level up to and including the application layer. From a programmer perspective, application-level concurrency enables you to develop applications that perform numerous operations in parallel, including responding to asynchronous events, accessing I/O devices, servicing network requests, parallel computing, and so forth.
The Objective-C platform provides a variety of language extensions, APIs, and operating system services that are designed to enable you to safely and efficiently ...
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