arbitrator.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   arbitrator.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: dporhomo <dporhomo@student.42prague.com    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2026/06/15 12:59:39 by dporhomo          #+#    #+#             */
/*   Updated: 2026/06/15 13:01:20 by dporhomo         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

/* Checks if a compilation is possible */

#include "codexion.h"

/* Figures out if two coders are fighting for same dongle */
/* Determines if coders are next to each other or not */
int	shares_dongle(t_coder *me, int other_id)
{
	int	o_left;
	int	o_right;

	o_left = other_id - 1;
	o_right = other_id % me->prog->num_coders;
	if (o_left == me->left_dongle || o_left == me->right_dongle
		|| o_right == me->left_dongle || o_right == me->right_dongle)
		return (1);
	return (0);
}

/* Checks are dongles ready */
/* Finds coder in pq, gets its idx */
/* Checks if dongles ready, if I am not checking myself,
   if other coder has higher priority, if coders shares dongles
   if all is not, can compile is true */
int	can_compile(t_coder *coder)
{
	long long	now;
	int			my_idx;
	int			i;

	now = get_current_time();
	if (now < coder->prog->dongle_ready_time[coder->left_dongle]
		|| now < coder->prog->dongle_ready_time[coder->right_dongle])
		return (0);
	my_idx = -1;
	i = -1;
	while (++i < coder->prog->pq.size)
		if (coder->prog->pq.heap[i].coder_id == coder->id)
			my_idx = i;
	if (my_idx == -1)
		return (0);
	i = -1;
	while (++i < coder->prog->pq.size)
		if (i != my_idx && pq_compare(&coder->prog->pq, i, my_idx))
			if (shares_dongle(coder, coder->prog->pq.heap[i].coder_id))
				return (0);
	return (1);
}