/* the philosopher thread function - create N threads, each of which calls
* this function with its philosopher number 0..N-1
*/
void *philosopher_thread(void *context)
{
int philosopher_num = (int)context; /* hack... */
while (1) {
sleep_exp(4.0);
get_forks(philosopher_num);
sleep_exp(2.5);
release_forks(philosopher_num);
}
return 0;
}
void run(int *i)
{
while (1)
{
sleep(1);
if (eating[*i])
{
printf("Philosopher #%d is eating 'yum yum'.\n", *i+1);
release_forks(i);
eating[*i] = 0;
printf("Philosopher #%d released forks.\n", *i+1);
}
else
{
printf("Philosopher #%d is thinking.\n", *i+1);
pthread_mutex_lock(&mutex);
if (eating[*i] = look_for_forks(i))
printf("Philosopher #%d got his forks.\n", *i+1);
pthread_mutex_unlock(&mutex);
}
}
}
void eat(int p_id)
{
int result = acquire_forks(p_id);
if(result == 1)
{
printf("\nAgent %d is eating\n", p_id);
printf("\nForks %d and %d are locked!\n", get_left_fork(p_id), get_right_fork(p_id));
wait(generate_random_wait(p_id));
printf("OM NOM NOM NOM NOM NOM NOM");
release_forks(p_id);
printf("\nForks %d and %d are unlocked!\n", get_left_fork(p_id), get_right_fork(p_id));
printf("Agent %d is mildly satisfied and is returning to the arts life\n", p_id);
pthread_mutex_lock(&eat_lock);
iterations++;
printf("\niteration #%d\n", iterations);
pthread_mutex_unlock(&eat_lock);
think(p_id);
}
else
{
think(p_id);
}
}
