Practical presentation
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The document summarizes a student project implementing a bounded buffer producer-consumer problem in Nachos using threads and semaphores. It describes using a binary semaphore for mutual exclusion and counting semaphores to synchronize shared resources. It provides the code location, compilation instructions, and execution instructions. Producer and consumer functions are shown using semaphores to control access to the shared buffer and mutex.
Practical presentation
- 1. Operating System Practical Presentation Jonathan Arturo Alvarado Mata 1441616 Carlos Eduardo Triana Sarmiento 1412573 Obed David Guevara Ibarra 1447478 Blog: http://os-ocj.blogspot.com/
- 2. What we did? We made the program of Bounded buffer producer-consumer. Our program use a thread for producer, and other thread for consumer. What we use? We use 2 kinds of semaphores ... A two-valued or binary semaphore that implements mutual exclusion And the other kind of semaphore is a multiple-valued or counting semaphores that implements synchronized counts of shared resources
- 3. Practical presentation Where is our code? Our code is in the file nachos/code/threads/threadtest.cc How do we compile our code? We open a terminal and go to /nachos/code Then we type: make This instruction will compile all our code of nachOS How do we execute our code? In the terminal we go to /nachos/code/threads/ Then we type: ./nachos This will execute our code
- 4. Producer Function semaphore mutex = 1; semaphore empty = N; semaphore full = 0; void producer() { while (1) { P(empty); P(mutex); Product++; V(mutex); V(full); } } void consumer() { while(1) { P(full); P(mutex); V(mutex); V(empty); Product--; } } Consumer Function
- 5. Bibliography http://www.isi.edu/~faber/cs402/notes/lecture7.html http://black.goucher.edu/~kelliher/cs42/oct02.html http://www.mitecnologico.com/Main/Mutex
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