Operating systems notes
Locks, Semaphores & Condition Variables
The concurrency toolbox, the primitives that turn "we need a critical section" into code that is actually correct. Every section is a drawn page beside a clear written explanation, about 19 minutes in all.
- Chapter 15 of 37
- About 19 minutes
- 9 sections
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In this chapter
- Mutual exclusion, delivered
- Mutex locks: the everyday tool
- Spinlocks vs blocking locks
- Semaphores: counting permits
- Semaphore vs mutex: not the same tool
- Condition variables & monitors
- Deadlock, priority inversion & other lock hazards
- Higher-level abstractions
- Why engineers care
Next chapters
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