Lexicon Entry
Mach Microkernel
A microkernel that forms the foundation of the XNU kernel. It manages low-level system resources, primarily focusing on tasks (resource containers), threads (execution units), and inter-process communication via ports.
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.