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Lecture 17. Pipes for IPC. Files and forking IPC

  • Pipes for IPC
  • File length
  • File position and forking
  • Closing file handles after forking

    • Lecture 16. Page Tables. IPC

  • Size of single and a 2 level page table
  • TLB
  • Simple pipe example

    • Lecture 15. Dining Philosphers - Code analysis

  • Dining Philosphers - Code analysis
  • Process Diagrams (unsafe regions)

    • Lecture 14. Deadlock.

  • Deadlock analysis
  • Resource Allocation Graphs
  • Coffman conditions
  • Dining Philosphers (intro)

    Lecture 13. Reader Writer #2

  • Ring buffer (aka circular buffer) implementation
  • Synchronization Code analysis
  • An improved Reader Writer Solution

    • Lecture 12. Condition Variables. Reader-Writer

  • Condition Variables
  • Reader-Writer problem

    • Lecture 11. Condition Variables

  • Condition Variables
  • Analysis of solution to the Critical Section Problem
  • Implementing semaphore using condition variables

    • Lecture 10. The Critical Section Problem

  • The Critical Section Problem

    • Lecture 09. Using Mutex and Semaphore to implement a thread-safe data-structure.

  • Mutex and Semaphore review
  • Implementing a thread-safe stack
  • Using counting semaphores to prevent underflow and overflow
  • Incorrect implementation of a semaphore

    Lecture 08. Critical Section. Mutex and Semaphore.

  • What is a Critical Section?
  • Locking and unlocking a mutex
  • Wait() and Post() of an unamed counting semaphore
    • In addition to the handout(see above link), see Mutex locks - Part 1 and Semaphores - Part 1

    Lecture 07. Using pthreads

  • pthread_create,_cancel,_exit,_join
  • Passing data to threads. Gotchas (race-condition gotchas)
  • Why are some functions not thread-safe
    • In addition to the handout(see above link), see Pthreads-Part-2

    Lecture 06. Malloc,Calloc,Realloc. Intro to VM. Intro to threads

  • Malloc,Calloc,Realloc
  • Short introduction to Virtual Memory.
  • Intro to threads (pthread_create, pthread_join) In addition to the handout, see Pthreads-Part-1 and Heap memory introduction

    Lecture 05. Thanks for the memory.

  • Intro to how malloc works. Fragmentation. In addition to the handout, see Implementing-a-memory-allocator and Heap memory introduction

    Quiz 02 (Mon 9/8)

  • Results are posted in your subversion directory and emailed. Median score 16.

    Lecture 04 (Fri 9/5). Fork bombs and zombies - When good processes go bad

  • Fork-exec-wait. exec. waitpid. Zombies. Fork bombs.

    • Lecture 03 (Wed 9/3)

  • Signals intro (SIGALRM, SIGINT). Environment variables. Program arguments )

    • Quiz 01 (Fri)

    Lecture 02 (Wed 8/27). C Intro Crash Course

    Todos

    1. Attend section tomorrow
    2. Spot the mistakes in your friends' C code. You can bring along your friends printouts to share
    3. C Programming (please fix up typos; add more examples etc etc)
    4. Tricky Extra Bonus Code-Review Credit: I wrote some C code for your startup. Is there anything underhanded in it? (pdf,txt,docx versions)
    5. Bring your ICARD and pencil to Friday's class. Wednesday&s class, your committed code in subversion, C Gotchas wiki page and your section will be my inspiration for the quiz.

    Lecture 01 (Mon 8/25). Welcome.

    Lecture handouts (and past-semester ppts) are in subversion here.

    Post lecture Todos: 
    Login into your favorite UIUC linux machine e.g.
ssh netid@linux.ews.illinois.edu            

// (If you do this on your own linux laptop, replace '$USER' with your netid if your user id != netid)
mkdir cs241
cd cs241
svn co https://subversion.ews.illinois.edu/svn/fa14-cs241/$USER
//     (your svn area will exist 12-24 hours after course registration)
cd $USER;
// Create 5 awesome programs that are bad C programs. 
//Show that you know some of the C Gotchas by deliberately creating some bad programs
// See my C Programming gotcha's here (I'm sure there are many other gotchas...)- 
// System Programming Book
svn add myfile.c
svn commit -m 'Awesome work by me'
Before lecture.... Open https://subversion.ews.illinois.edu/svn/fa14-cs241/$USER 
..(replace $USER with your netid) to print your work and bring it to lecture #2.

Q. Help I'm stuck! These instructions are insufficient! 
//Ans. Don't panic. You're not in the course alone. Use Piazza. Use Google. 
//You're not a freshwoman/freshman any more. You're from UIUC - you can do this!

 
A / A+ students ... Got some spare time ?

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