lab-06-Rushilwiz/main.c

// Do not edit this file
// Usage (after running make): ./main
// This file takes input from stdin and outputs to stdout. No CLI args

#include <stdio.h>
#include <stdlib.h>
#include "schedule.h"
#include "task.h"

int main() {
    int n;
    printf("Number of tasks: ");
    scanf("%d", &n);

    if (n <= 0) {
        fprintf(stderr, "Number of tasks must be greater than 0\n");
        return EXIT_FAILURE;
    }

    unsigned int pid, priority, cycles;

    for (int i = 0; i < n; i++) {
        printf("pid priority cycles: ");
        scanf("%d %d %d", &pid, &priority, &cycles);
        if (!append_task(pid, priority, cycles)) {
            fprintf(stderr, "Append failed, is %d a duplicate pid?\n", pid);
            return EXIT_FAILURE;
        }
    }

    printf("---- Tasks ----\n");
    printf("(num_tasks) [pid:priority:cycles:priority/cycles ...]\n");
    print_tasks();

    printf(
        "Select scheduling algorithm (0: Display min heap, 1: FCFS, "
        "2: Priority queue, 3: "
        "Round robin): ");
    int scheduler = 0;
    scanf("%d", &scheduler);

    switch (scheduler) {
        case 0:
            printf("---- Min heap ----\n");
            min_heapify();
            print_tasks();
            break;
        case 1:
            printf("---- FCFS ----\n");
            fcfs();
            break;
        case 2:
            printf("---- Priority queue ----\n");
            priority_queue(QUANTUM);
            break;
        case 3:
            printf("---- Round robin ----\n");
            round_robin(QUANTUM);
            break;
        default:
            fprintf(stderr, "Invalid scheduler\n");
            return EXIT_FAILURE;
    }

    return EXIT_SUCCESS;
}