Tag: serial output

Chapter 11 — Blocking Primitives, Sleep Queues, and Scheduler Hygiene

Posted By: R. MorganPosted On:
Chapter 11 — Blocking Primitives, Sleep Queues, and Scheduler Hygiene
This entry is part 11 of 11 in the series Writing A Linux Style Operating System From Scratch

In Chapter 10, we added timer-driven preemption: Now we need the next scheduler capability: blocking. A runnable thread competes for CPU time. A blocked or sleeping thread does not. OSDev describes a blocking process as one that waits for an event, such as a semaphore or message, and is removed from the active scheduling queue

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