Computer Science 330
Operating Systems

Fall 2025, Siena University

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Agenda

• Announcements
  • The next readings/activities from OS zyBook: Chapter 12, due Friday, October 24 (!)
  • We will recap Lab 4: Interleavings [HTML] [PDF] on Monday, so be sure it's done by then
  • Grading updates (other than Exam 1)
• Exam 1 recap
• Process Synchronization
  • basic idea of semaphore-based approaches
  • the monitor concept, and condition variables
  • the zyBook covered the readers/writers pretty thoroughly - questions?
  • opening up solutions to Exercise 9.5.1-9.5.3 without detailed discussion
  • working through Exercise 9.5.4
  • let's be dining philosophers
  • Exercise 9.5.6
  • The Sleeping Barber
  • a quick look at semaphore implementations
• Starting Programming Project 2: Semaphores [HTML] [PDF]