cos18 / philosophers

I’ve never thought philosophy would be so deadly

Philosophers

This project handles the basics of threading a process, how to work on the same memory space and how to make threads. This project will discover the mutex, semaphore and shared memory.

🎯 Object

Implement Dining philosophers problem in THREE different way!

philo_one

philosopher with threads and mutex

• One fork between each philosopher, therefore there will be a fork at the right and at the left of each philosopher.
• To avoid philosophers duplicating forks, you should protect the forks state with a mutex for each of them.
• Each philosopher should be a thread.

philo_two

philosopher with threads and semaphore

• All the forks are in the middle of the table.
• They have no states in memory but the number of available forks is represented by a semaphore.
• Each philosopher should be a thread.

philo_three

philosopher with processes and semaphore

• All the forks are in the middle of the table.
• They have no states in memory but the number of available forks is represented by a semaphore.
• Each philosopher should be a process and the main process should not be a philosopher.

💻 How to Run

$ cd philo_x
$ make
$ ./philo_x number_of_philosophers time_to_die time_to_eat time_to_sleep [number_of_times_each_philosopher_must_eat]