// Copyright (c) 2023, Marvin Borner <dev@marvinborner.de>
// SPDX-License-Identifier: MIT

#include <schedule.h>
#include <lib/pqueue.h>
#include <parse.h>
#include <map.h>

static struct pqueue *queue;

static pqueue_pri_t get_pri(void *a)
{
	struct term *term = a;
	return (parse_get_max_depth() - term->depth + 1) * term->refs;
}

static int cmp_pri(pqueue_pri_t next, pqueue_pri_t curr)
{
	return next < curr;
}

static void set_pos(void *a, size_t position)
{
	(void)a;
	(void)position;
}

void schedule_init(void)
{
	queue = map_to_pqueue(cmp_pri, get_pri, set_pos);
}

void schedule_destroy(void)
{
	pqueue_free(queue);
}