Jonathan Levin is a longtime trainer and consultant focusing on the system and kernel levels of the 'Big Three'-Windows, Linux, and OS X, as well as their mobile derivatives. He is the founder and CTO of Technologeeks.com, a partnership of experts delivering advanced training on systems/kernel programming, debugging, and profiling.

INTRODUCTION xxv
PART I: FOR POWER USERS
CHAPTER 1: DARWINISM: THE EVOLUTION OF OS X 3
CHAPTER 2: E PLURIBUS UNUM: ARCHITECTURE OF OS X AND IOS 17
CHAPTER 3: ON THE SHOULDERS OF GIANTS: OS X AND IOS TECHNOLOGIES 55
CHAPTER 4: PARTS OF THE PROCESS: MACH-O, PROCESS, AND THREAD INTERNALS 91
CHAPTER 5: NON SEQUITUR: PROCESS TRACING AND DEBUGGING 147
CHAPTER 6: ALONE IN THE DARK: THE BOOT PROCESS: EFI AND IBOOT 183
CHAPTER 7: THE ALPHA AND THE OMEGA -- LAUNCHD 227
PART II: THE KERNEL
CHAPTER 8: SOME ASSEMBLY REQUIRED: KERNEL ARCHITECTURES 261
CHAPTER 9: FROM THE CRADLE TO THE GRAVE -- KERNEL BOOT AND PANICS 299
CHAPTER 10: THE MEDIUM IS THE MESSAGE: MACH PRIMITIVES 343
CHAPTER 11: TEMPUS FUGIT -- MACH SCHEDULING 389
CHAPTER 12: COMMIT TO MEMORY: MACH VIRTUAL MEMORY 447
CHAPTER 13: BS"D -- THE BSD LAYER 501
CHAPTER 14: SOMETHING OLD, SOMETHING NEW: ADVANCED BSD ASPECTS 539
CHAPTER 15: FEE, FI-FO, FILE: FILE SYSTEMS AND THE VFS 565
CHAPTER 16: TO B (-TREE) OR NOT TO BE -- THE HFS+ FILE SYSTEMS 607
CHAPTER 17: ADHERE TO PROTOCOL: THE NETWORKING STACK 649
CHAPTER 18: MODU(LU)S OPERANDI -- KERNEL EXTENSIONS 711
CHAPTER 19: DRIVING FORCE -- I/O KIT 737
APPENDIX: WELCOME TO THE MACHINE 773
INDEX 793

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An in-depth look into Mac OS X and iOS kernels
Powering Macs, iPhones, iPads and more, OS X and iOS are becoming ubiquitous. When it comes to documentation, however, much of them are shrouded in mystery. Cocoa and Carbon, the application frameworks, are neatly described, but system programmers find the rest lacking. This indispensable guide illuminates the darkest corners of those systems, starting with an architectural overview, then drilling all the way to the core.
Provides you with a top down view of OS X and iOS
Walks you through the phases of system startup--both Mac (EFi) and mobile (iBoot)
Explains how processes, threads, virtual memory, and filesystems are maintained
Covers the security architecture
Reviews the internal Apis used by the system--BSD and Mach
Dissects the kernel, XNU, into its sub components: Mach, the BSD Layer, and I/o kit, and explains each in detail
Explains the inner workings of device drivers

From architecture to implementation, this book is essential reading if you want to get serious about the internal workings of Mac OS X and iOS.