Computer Science 330
Operating Systems

Fall 2022, Siena College

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Agenda

• Announcements
  • Exam 1 Monday in class
  • Siena break spans our next two class meetings on October 14 and October 17
  • Over that time, you will have some tasks, likely an additional small lab to work through - watch your email after the exam on Monday
  • Our October 21 we will meet at our usual time but on Zoom, as I will be traveling to a conference
  • The next readings/activities from OS zyBook: Chapter 4, Section 5, due October 21
• A look at the reference solution to Programming Project 1: CPU Scheduler Simulation [HTML] [PDF]
• More on cooperating processes, critical sections
  • the producer-consumer problem
  • critical sections
    • requirements: mutual exclusion, progress, bounded waiting
    • 2-process algorithms
    • n-process algorithms
  • hardware support for process synchronization
    • atomic test-and-set
    • bounded wait using atomic test-and-set
    • atomic swap instruction
• Starting on Lab 3: Concurrency [HTML] [PDF]

Examples

• https://github.com/SienaCSISOperatingSystems/prodcons-examples