philosophers

This project is about the philosophers dilemma dining philosophers and the basics of threading a process. It is an introduction on mutexes and how to create threads

Summary

Each philosopher is a thread and mutexes are used to prevent deadlocks and data races.

Authorized functions for the assignment: printf, malloc, free, write, usleep, gettimeofday, pthread_create, pthread_join, pthread_mutex_init, pthread_mutex_destroy, pthread_mutex_lock, pthread_mutex_unlock

Code written in accordance with 42 C coding style.

Usage

Run make in the root of the projet and launch as follows:

./philo <philo_nb> <time_to_die> <time_to_eat> <time_to_sleep> [ <number_of_meals> ]

• philo_nb -- the number of philosophers and forks.

• time_to_die -- A philosopher dies if he doesn't start to eat time_to_die ms after the beginning of his last meal (or the simulation).

• time_to_eat -- The time it takes for a philosopher to eat.

• time_to_sleep -- The time it takes for a philosopher to sleep.

• number_of_meals -- (optional) simulation stops if all philosophers ate at least such amount of times.

• If number_of_meals is not specified then the simulation stops at first death.

• If philo_nb > 200 or time_to_* < 60 ms then it is considered as undefined behavior.