In-class notes for 10/16/2019 (CS 273 (OS), Fall 2019)

In-class notes for 10/16/2019

CS 273 (OS), Fall 2019

System management lab

Some terms:

protocol: Rules for valid communication, e.g., between two programs over a network
web server: A program that receives network requests in http format and responds to those requests. (HTTP = HyperText Transfer Protocol)
IP table: A tabular data structure, located per host in a network, for governing Internet communication between hosts. (IP = Internet Protocol)
proxy server: A networked server program that relays communication to another networked server. Often used to provide limited external network access to a server located on a protected local network.
container: A process running on an OS that behaves like a custom-configured host with an OS of its own, without using a virtual machine.
Docker: A proprietary framework for running and managing containers
container image: Configuration rules for customizing a container

IPC strategies
- Busy wait, TSL, ______
- Semaphores, monitors, message passing:
  - Data structures and primitives; see also class notes on these IPC strategies
  - Review the shared data structure in-class exercises (semaphores, monitors, message passing)
  - Review text's producer/consumer examples
- Usage contexts for each of these IPC strategies, e.g., monitors are implemented within a programming language
Race conditions (correct behavior depends on timing) and four conditions for correct IPC - understand each
- Mutual exclusion; bounded wait; independence of speed; progress
- Know them - be able to describe them and apply them
Race conditions: definition; locating race conditions.

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