rt/include/rt/list.h

#pragma once

#include <stdbool.h>

#ifdef __cplusplus
extern "C" {
#endif

struct rt_list;

void rt_list_remove(struct rt_list *node);

bool rt_list_is_empty(const struct rt_list *list);

struct rt_list *rt_list_front(const struct rt_list *list);

void rt_list_push_back(struct rt_list *list, struct rt_list *node);

// Insert node into list at the first position where cmp(node, node->next).
void rt_list_insert_by(struct rt_list *list, struct rt_list *node,
                       bool (*cmp)(const struct rt_list *,
                                   const struct rt_list *));

struct rt_list
{
    struct rt_list *prev, *next;
};

#define RT_LIST_INIT(name)                                                     \
    {                                                                          \
        .prev = &name, .next = &name                                           \
    }

#define RT_LIST(name) struct rt_list name = RT_LIST_INIT(name)

#ifdef __cplusplus
}
#endif