Learning Resources

This module is populated from the local chunked books in library/raw/semester-04-systems-programming/books and from canonical online documentation. Computer Systems: A Programmer's Perspective (CSAPP) is now in the local Semester 4 library and should be used as the strongest second source for processes, virtual memory, and concurrency.

Source Stack

Source	Role	How to use it in this module
The C Programming Language (K&R)	Primary	Chapter 8 (UNIX System Interface) is the direct precursor of Clusters 1-3. Read 8.1-8.3, 8.7.
Computer Organization and Design (Patterson & Hennessy)	Selective	Chapter 5.4 for the virtual memory picture behind mmap; Chapter 7 for parallelism background.
Code (Petzold)	Background	Chapters 25-26 give an unusually lucid picture of peripherals and the OS boundary.
SICP	Peripheral	Not used directly in this module.
Linux man pages (man7.org)	Primary external	The authoritative reference for every syscall. Read the RETURN VALUE and ERRORS sections, always.
Beej's Guide to Network Programming	Primary external	Best free tutorial for BSD sockets.
Beej's Guide to Unix IPC	Primary external	Covers pipes, shared memory, semaphores with worked examples.
LLNL POSIX Threads Programming	Primary external	Clear tutorial for pthread, mutexes, condition variables.
GDB Documentation (sourceware)	Primary external	Reference for Cluster 5.
Valgrind / perf / strace manuals	Primary external	Reference for Cluster 5.
CSAPP (Bryant & O'Hallaron)	Local support	Use for fork/exec, signals, virtual memory, memory mapping, and concurrency once the K&R or man-page pass is clear

Resource Map by Cluster

Cluster 1: Processes and System Calls

Need	Best local chunk or URL	Why
introduction to UNIX system interface	K&R 8.1: File Descriptors	The original, one-page framing.
conceptual OS boundary	Code: The Operating System (Part 1)	Petzold's gentle introduction to what the kernel does.
fork, exec, wait reference	man 2 fork, man 3 exec, man 2 waitpid	Canonical signatures and error codes.
signals overview	man 7 signal	Full catalog of signals and default actions.
async-signal safety	man 7 signal-safety	The definitive async-signal-safe function list.

Cluster 2: File Descriptors and I/O

Need	Best local chunk or URL	Why
low-level I/O introduction	K&R 8.2: Read and Write	Minimal, correct, and historically foundational.
open/creat/close/unlink	K&R 8.3	Direct source material.
open flags and error codes	man 2 open	Authoritative; read the O_CLOEXEC, O_APPEND, O_NONBLOCK sections.
how FILE * is built on fds	K&R 8.5: Implementation of fopen and getc	Demystifies stdio in ~6 pages.
pipes in practice	Beej's Guide to Unix IPC: Pipes	Worked examples of pipe/dup2 with shell redirection.

Cluster 3: Memory Management in Practice

Need	Best local chunk or URL	Why
virtual memory mental model	COD 5.4: Virtual Memory	The hardware picture behind mmap.
mmap reference	man 2 mmap	Authoritative; read MAP_SHARED vs MAP_PRIVATE carefully.
shared memory between processes	Beej's Guide to Unix IPC: Shared Memory	Small, practical, complete.
custom allocator source	K&R 8.7: A Storage Allocator	Canonical free-list implementation.
modern allocator design	jemalloc manual	Read after K&R to see how size-class allocators evolve the pattern.

Cluster 4: Concurrency Primitives

Need	Best local chunk or URL	Why
hardware view of parallelism	COD 7.2: Difficulty of Parallel Programs	Why concurrent programming is hard.
hardware-level sync instructions	COD 2.11: Parallelism and Synchronization	Atomic instructions at the ISA.
pthread_create/join reference	man 3 pthread_create	Authoritative.
condition variables reference	man 3 pthread_cond_wait	The while-loop rule is explicit in the NOTES.
pthread tutorial	LLNL POSIX Threads Programming	Best free tutorial; worked examples.
acquire/release semantics	Preshing: Acquire and Release Semantics	Shortest clear explanation of memory ordering.

Cluster 5: Sockets and Debugging Tools

Need	Best local chunk or URL	Why
sockets tutorial	Beej's Guide to Network Programming	The canonical free sockets tutorial.
socket/bind/listen/accept reference	man 2 socket, man 2 bind, man 2 accept	Authoritative signatures and errors.
TCP behavior	man 7 tcp	Socket options, states, behavior.
gdb	GDB User Manual	Reference.
perf	Brendan Gregg: perf Examples	Best practical guide to real-world perf usage.
valgrind	Valgrind User Manual	Reference for memcheck and callgrind.

Note on CSAPP

Computer Systems: A Programmer's Perspective is now part of the local Semester 4 library. Use its Chapter 8 chunks for fork/exec/wait and signals, Chapter 9 for mmap and virtual memory, and Chapter 12 for threads and synchronization.