/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   utils.c                                            :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: thrieg <thrieg@student.42mulhouse.fr>      +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2025/12/13 04:41:06 by thrieg            #+#    #+#             */
/*   Updated: 2025/12/13 06:00:35 by thrieg           ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "../includes/ft_malloc.h"
#include "../libft/ft_printf/ft_printf.h"

void print_allocs_zone(t_zone *zone)
{
	ft_printf("%s : %p\n", zone->type == E_TINY ? "TINY" : (zone->type == E_SMALL ? "SMALL" : "LARGE"), zone);

	char *zone_end = (char *)zone + zone->size;
	t_header *header = (t_header *)(zone + 1);
	while ((char *)header + sizeof(t_header) <= zone_end)
	{
        if (header->occupied)
		    ft_printf("%p - %p : %u bytes\n", (char *)header + sizeof(header), (char *)header + sizeof(header) + header->size, (unsigned int)header->size);
		header = (t_header *)((char *)(header + 1) + header->size);
	}
}

static t_zone *min_zone_ptr(t_zone *a, t_zone *b, t_zone *c)
{
	t_zone *m = NULL;

	if (a && (!m || (uintptr_t)a < (uintptr_t)m)) m = a;
	if (b && (!m || (uintptr_t)b < (uintptr_t)m)) m = b;
	if (c && (!m || (uintptr_t)c < (uintptr_t)m)) m = c;
	return m;
}

void show_alloc_mem(void)
{
	t_zone *t = g_state.tiny_zone;
	t_zone *s = g_state.small_zone;
	t_zone *l = g_state.large_zone;

	while (t || s || l)
	{
		t_zone *m = min_zone_ptr(t, s, l);
		print_allocs_zone(m);

		if (m == t)      t = t->next;
		else if (m == s) s = s->next;
		else             l = l->next;
	}
}