n n n n n Operating System Concepts - 10th n Philosophers spend their lives alternating thinking and eating Don't interact with their neighbors, occasionally try to pick up 2 chopsticks (one at a time) to eat from bowl Need both to eat, then release both when done In the case of 5 philosophers Shared data (RICE Bowl of rice (data set) Semaphore chopstick [5] initialized to 1 7.0 Semaphore Solution The structure of Philosopher i: while (true) { Dining-Philosophers Problem Algorithm wait (chopstick [i]); wait (chopStick [ (i+1) % 5] ); /* eat for awhile */ signal (chopstick [i]); signal (chopstick [ (i + 1) % 5] ); /* think for awhile */ Silberschatz, Galvin and Gagne ©20 } What is the problem with this algorithm?
n n n n n Operating System Concepts - 10th n Philosophers spend their lives alternating thinking and eating Don't interact with their neighbors, occasionally try to pick up 2 chopsticks (one at a time) to eat from bowl Need both to eat, then release both when done In the case of 5 philosophers Shared data (RICE Bowl of rice (data set) Semaphore chopstick [5] initialized to 1 7.0 Semaphore Solution The structure of Philosopher i: while (true) { Dining-Philosophers Problem Algorithm wait (chopstick [i]); wait (chopStick [ (i+1) % 5] ); /* eat for awhile */ signal (chopstick [i]); signal (chopstick [ (i + 1) % 5] ); /* think for awhile */ Silberschatz, Galvin and Gagne ©20 } What is the problem with this algorithm?
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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