Fixed issues with semaphores. Program fully functional
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431dcb6aa6
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@ -86,15 +86,15 @@ void* Philosopher(void* philosopherPassed)
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PhilosopherData *philosopherSelected = (PhilosopherData*) philosopherPassed;
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PhilosopherData *philosopherSelected = (PhilosopherData*) philosopherPassed;
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while (true)
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while (true)
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{
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{
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Think(philosopherSelected); /*philosopher is thinking*/
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if (philosopherSelected->eatingCount > 2)
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if (philosopherSelected->eatingCount == 2)
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{
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{
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printf("Philosopher %d ate twice...\n", philosopherSelected->position);
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// printf("Philosopher %d ate twice...\n", philosopherSelected->position);
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return;
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return;
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}
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}
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TakeForks(philosopherSelected); /*acquire two forks or block*/
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TakeForks(philosopherSelected); /*acquire two forks or block*/
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Eat(philosopherSelected); /*yum-yum, spaghetti*/
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Eat(philosopherSelected); /*yum-yum, spaghetti*/
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PutForks(philosopherSelected); /*put both forks back on table*/
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PutForks(philosopherSelected); /*put both forks back on table*/
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Think(philosopherSelected); /*philosopher is thinking*/
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}
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}
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}
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}
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@ -106,9 +106,10 @@ void PhilosopherInit(int philosopherTotal)
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sem_init(&semaphore, 0, 1);
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sem_init(&semaphore, 0, 1);
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while (!AllPhilosophersFull(PhilosopherList, philosopherTotal))
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while (!AllPhilosophersFull(PhilosopherList, philosopherTotal))
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{
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{
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AllowPhilosopher();
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sleep(1);
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sleep(1);
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AllowPhilosopher();
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}
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}
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sleep(5);
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for (int i = 0; i < philosopherTotal; i++)
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for (int i = 0; i < philosopherTotal; i++)
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{
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{
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printf("Philosopher %d eating count: %d\n", PhilosopherList[i].position, PhilosopherList[i].eatingCount);
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printf("Philosopher %d eating count: %d\n", PhilosopherList[i].position, PhilosopherList[i].eatingCount);
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@ -123,6 +124,7 @@ void PhilosopherListInit(PhilosopherData PhilosopherList[], int philosopherTotal
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PhilosopherList[i].position = i;
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PhilosopherList[i].position = i;
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PhilosopherList[i].eatingCount = 0;
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PhilosopherList[i].eatingCount = 0;
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PhilosopherList[i].state = THINKING;
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PhilosopherList[i].state = THINKING;
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printf("Philosopher %d is thinking...\n", i);
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pthread_create(&PhilosopherList[i].thread, NULL, &Philosopher, &PhilosopherList[i]);
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pthread_create(&PhilosopherList[i].thread, NULL, &Philosopher, &PhilosopherList[i]);
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}
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}
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}
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}
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