/************************************************************
  File:          solution2.h
  Description:   A program that simulates the problem of the 
                 five philosophers.
                                                         
  Author:        Dana Vrajitoru                          
  Organization:  IUSB                                    
  Date:          August 22, 2018
**************************************************************/

#ifndef SOLUTION2_H
#define SOLUTION2_H

#include <pthread.h>

const int PHIL_NR = 5;

// Initializes all the semaphores we need.
void Init_semaphores();

// Inputs the number of iterations for each philosopher.
void Input_iters();

// Waits for a random amount of time between two limits.
void Wait();

// Increases the meditation count and waits.
void Meditate();

// Increases the eating count and waits.
void Eat();

void Write(char *str);

// Tries to reserve a fork. If it can, it reserves it and returns 1,
// otherwise returns 0.
int Try_to_reserve(int fork_nr);

// Releases a fork.
void Release(int fork_nr);

// The second solution in the heandouts for the philosophers problem.
void Philosopher(int id);

// The main thread function. Each of the threads gets an id between 0
// and the number of philosophers and then calls the Philosopher
// function with this id.
void *Get_id_and_run(void *ignored);

// The function that creates all of the threads.
void Create_threads(pthread_t *threads);

// A function that synchronizes all of the threads.
void Synchronise(pthread_t *threads);

// Output the statistics for each philosopher.
void Write_stats();

#endif