3umi / Philosophers_42

Eat, Sleep, Spaghetti, repeat. This project is about learning how threads work by precisely timing a group of philosophers on when to pick up forks and eat Spaghetti without dying from hunger.

Description

This program is a simulation of the dining philosophers problem

• Overview
• Features
• Resources

Overview

"./philo(_bonus)" <nb_of_philosopher> <time_to_die> <time_to_eat> <time_to_sleep> <number_of_times_each_philosopher_must_eat>

• nb_of_philosopher : The number of philosophers and also the number of forks.


• time_to_die (in milliseconds): If a philosopher didn’t start eating time_to_die milliseconds since the beginning of their last meal or the beginning of the simulation, they die.


• time_to_eat (in milliseconds): The time it takes for a philosopher to eat. During that time, they will need to hold two forks.


• time_to_sleep (in milliseconds): The time a philosopher will spend sleeping.


• number_of_times_each_philosopher_must_eat (optional argument): If all philosophers have eaten at least number_of_times_each_philosopher_must_eat times, the simulation stops. If not specified, the simulation stops when a philosopher dies.

Features

./philo :

• Multithreading
• Mutexes

./philo_bonus :

• Multiprocessing
• Multithreading
• Semaphores

Resources

The Linux Programming Interface by Michael Kerrisk :
https://docs.google.com/viewer?a=v&pid=sites&srcid=ZGVmYXVsdGRvbWFpbnx0aGljaGhvY2l0fGd4OjRiZjExNjc4ZTAzMzcxOA