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2. Develop a solution for the Dining Philosopher's problem using AND-Synchronization (i.e. Parallel Semaphores SP and SV)

2. Develop a solution for the Dining Philosopher's problem using AND-Synchronization (i.e. Parallel Semaphores SP and SV)

Database System Concepts
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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WHats the pseduo code in c++/python for number 2? 

1. Imagine a very long bridge across the Mississippi River. A car will take upwards of 15 minutes to cross this bridge. Due to construction, the bridge has been reduced to a single lane that has to be shared by traffic in both directions. It is obviously not possible to allow traffic in both directions simultaneously, and so a special traffic control mechanism is installed with the following rules: • An arriving car will have to wait if the bridge is currently occupied by one or more cars moving in the opposite direction. Multiple cars are allowed to cross the bridge in the same direction at the same time (one after another) ● • In order to avoid starvation, the entry of cars onto the bridge in one direction must be stopped after a batch of K cars has entered the bridge from one direction, to allow traffic moving in the opposite direction (if there are any cars waiting) • If there are no cars, the bridge is open in both directions, and the first arriving car will determine the direction of traffic. Viewing each car as a process that is traveling in either the West-East (WE) or East-West (EW) direction, develop a MONITOR that implements the rules listed above. Your MONITOR must use the monitor procedures Enter_WE(), Enter_EW(), Exit_WE(), Exit_EW() when a car enters and exits the bridge. Your solution must show all necessary MONITOR variables and condition variables. It must not unnecessarily restrict vehicles attempting to cross the bridge, must be deadlock free, and must not starve traffic in either direction. 2. Develop a solution for the Dining Philosopher's problem using AND-Synchronization (i.e. Parallel Semaphores SP and SV)
Transcribed Image Text:1. Imagine a very long bridge across the Mississippi River. A car will take upwards of 15 minutes to cross this bridge. Due to construction, the bridge has been reduced to a single lane that has to be shared by traffic in both directions. It is obviously not possible to allow traffic in both directions simultaneously, and so a special traffic control mechanism is installed with the following rules: • An arriving car will have to wait if the bridge is currently occupied by one or more cars moving in the opposite direction. Multiple cars are allowed to cross the bridge in the same direction at the same time (one after another) ● • In order to avoid starvation, the entry of cars onto the bridge in one direction must be stopped after a batch of K cars has entered the bridge from one direction, to allow traffic moving in the opposite direction (if there are any cars waiting) • If there are no cars, the bridge is open in both directions, and the first arriving car will determine the direction of traffic. Viewing each car as a process that is traveling in either the West-East (WE) or East-West (EW) direction, develop a MONITOR that implements the rules listed above. Your MONITOR must use the monitor procedures Enter_WE(), Enter_EW(), Exit_WE(), Exit_EW() when a car enters and exits the bridge. Your solution must show all necessary MONITOR variables and condition variables. It must not unnecessarily restrict vehicles attempting to cross the bridge, must be deadlock free, and must not starve traffic in either direction. 2. Develop a solution for the Dining Philosopher's problem using AND-Synchronization (i.e. Parallel Semaphores SP and SV)
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