Lexicon Entry
Darwin OS
Darwin is the core Unix-based operating system developed by Apple. It integrates the XNU kernel with BSD Unix services and provides the POSIX environment used by macOS.
Related Knowledge & Cross-References
Guide
macOS Execution: Mach Tasks vs. BSD Processes
A deep dive into the Darwin/XNU kernel. We explore the architectural divide between Mach Tasks and Threads, and how standard BSD POSIX APIs like fork() are illusions layered over Mach primitives.