deep-roots learning program · module 07

Module 07 — Desktop OS internals

6 chapters · ~17k words · Windows, Linux, macOS side by side

Every chapter: first principles, What insiders know, a See it yourself lab, connections, and a quiz with worked answers.

Handles vs fds vs ports; commit vs RSS vs footprint — the comparison frame.

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PE internals, PEB/TEB, relocation, LoaderLock, the DLL order folklore.

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Front end (LFH) vs back end, encoded headers, bucket sizes, pageheap.

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ld.so, vDSO/vvar, symbol order, dlmopen — what runs before main.

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smaps, page cache, THP, slab, overcommit, the OOM killer's arithmetic.

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Mach VM, purgeable memory, unified memory — and the three-kernel table.

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the exam

fin

Every chapter, worked answers behind the fold.

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