August 2011
Intermediate to advanced
552 pages
23h 48m
English
Content preview from Advanced Mac OS X Programming: The Big Nerd Ranch GuideBecome 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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22Grand Central Dispatch
As mentioned in Chapter 10: Performance Tuning, we have reached the end of free performance as the transistors of new processors are being put into more and more cores rather than drastically speeding up existing cores.
Multi-threaded programming can be hard. You have race conditions, which can be fixed by locking, but it can be difficult to get the proper granularity of locking to prevent all of your threads from serializing on one code path. Finding the right locking granularity is hard. Make your locks too big, and they force serialization. Make them too small, and you drown in locking and unlocking overhead. Parallel algorithms also are more difficult to understand than serial algorithms, or at least they are not ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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