Paperback: 864 pages
Publisher: Wrox; 1 edition (November 6, 2012)
Product Dimensions: 7.4 x 1.6 x 9.3 inches
Shipping Weight: 3.2 pounds (View shipping rates and policies)
Average Customer Review: 4.2 out of 5 stars See all reviews (20 customer reviews)
Best Sellers Rank: #277,744 in Books (See Top 100 in Books) #29 in Books > Computers & Technology > Programming > Apple Programming #78 in Books > Computers & Technology > Operating Systems > Macintosh #141 in Books > Computers & Technology > Mobile Phones, Tablets & E-Readers > Programming & App Development
It is true that reading a kernel book can be difficult and not fun, but the problem of this book is beyond this.If you read the table of content, it looks like this book covers a lot of aspects. Providing "Mac OS X Internal" is somewhat "outdated", this book might be the only one you can get in the market. It does cover a lot of aspects, but leaves none of them discussed in-depth. For example, VFS. It is sad that Mac OS X Internal doesn't really cover a lot on VFS. I bought this book, hoping that it could discuss more about Mac OS X VFS, but I was disappointed. It covers even less. The VFS Mac OS X is using now was a fork of FreeBSD. They share a common ancestor at some point of time, then they diverged.If you look into the current FreeBSD VFS, it's very different with the one Mac OS X is using. So you cannot simply depend on a FreeBSD kernel book. I don't want to make my code dirty, I always want to make sure I have a good understanding of all the assumptions of VFS interfaces before I move on. The fact is that, there's no single book on shelf can reach this goal. Apple doesn't have a good documentation of their VFS, either. So as an independent developer, reading Apple's existing code (devfs for memory based VFS, HFS for block device based VFS) seems to be the only way to learn it.Beside the above problem, another big issue is the typos and errors in this book.There are quite a number of typos. Most of them don't cause real trouble since you can correct them by yourselves, but some of them are really misleading. Like on page 348, the first parameter of mach_msg call should be a pointer type, but the star is missing. I stared at it for a minute and looked at the real source code, proved that the book was wrong. Other errors also make glitches while reading.
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