/*
 * Copyright (c) 2017 Richard Braun.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "../check.h"
#include "../macros.h"
#include "../hlist.h"

struct obj {
    struct hlist_node node;
};

static struct obj *
obj_create(void)
{
    struct obj *obj;

    obj = malloc(sizeof(struct obj));
    hlist_node_init(&obj->node);
    return obj;
}

static void
obj_destroy(struct obj *obj)
{
    free(obj);
}

static void
add_obj_head(struct hlist *list)
{
    struct obj *obj;

    obj = obj_create();
    check(hlist_node_unlinked(&obj->node));
    hlist_insert_head(list, &obj->node);
}

static void
add_obj_head2(struct hlist *list)
{
    struct hlist_node *node;
    struct obj *obj;

    obj = obj_create();
    check(hlist_node_unlinked(&obj->node));
    node = hlist_first(list);
    hlist_insert_before(node, &obj->node);
}

static void
add_obj_second(struct hlist *list)
{
    struct hlist_node *node;
    struct obj *obj;

    obj = obj_create();
    check(hlist_node_unlinked(&obj->node));
    node = hlist_first(list);
    hlist_insert_after(node, &obj->node);
}

static void
add_obj_head_llsync(struct hlist *list)
{
    struct obj *obj;

    obj = obj_create();
    hlist_llsync_insert_head(list, &obj->node);
}

static void
add_obj_head2_llsync(struct hlist *list)
{
    struct hlist_node *node;
    struct obj *obj;

    obj = obj_create();
    check(hlist_node_unlinked(&obj->node));
    node = hlist_first(list);
    hlist_llsync_insert_before(node, &obj->node);
}

static void
add_obj_second_llsync(struct hlist *list)
{
    struct hlist_node *node;
    struct obj *obj;

    obj = obj_create();
    check(hlist_node_unlinked(&obj->node));
    node = hlist_first(list);
    hlist_llsync_insert_after(node, &obj->node);
}

static void
walk_all_objs1(struct hlist *list)
{
    struct hlist_node *node;

    hlist_for_each(list, node);
}

static void
walk_all_objs1_llsync(struct hlist *list)
{
    struct hlist_node *node;

    hlist_llsync_for_each(list, node);
}

static void
walk_all_objs2(struct hlist *list)
{
    struct hlist_node *node, *tmp;

    hlist_for_each_safe(list, node, tmp);
}

static void
walk_all_objs3(struct hlist *list)
{
    struct obj *obj;

    hlist_for_each_entry(list, obj, node);
}

static void
walk_all_objs3_llsync(struct hlist *list)
{
    struct obj *obj;

    hlist_llsync_for_each_entry(list, obj, node);
}

static void
walk_all_objs4(struct hlist *list)
{
    struct obj *obj, *tmp;

    hlist_for_each_entry_safe(list, obj, tmp, node);
}

static void
del_all_objs(struct hlist *list)
{
    struct obj *obj;

    while (!hlist_empty(list)) {
        obj = hlist_first_entry(list, struct obj, node);
        hlist_remove(&obj->node);
        obj_destroy(obj);
    }
}

static void
del_all_objs_llsync(struct hlist *list)
{
    struct obj *obj;

    while (!hlist_empty(list)) {
        obj = hlist_first_entry(list, struct obj, node);
        hlist_llsync_remove(&obj->node);
        obj_destroy(obj);
    }
}

int
main(void)
{
    struct hlist list, list2;

    hlist_init(&list);
    hlist_init(&list2);

    check(!hlist_llsync_first_entry(&list, struct obj, node));

    check(!hlist_singular(&list));
    add_obj_head(&list);
    check(hlist_singular(&list));
    add_obj_head(&list);
    check(!hlist_singular(&list));

    walk_all_objs1(&list);
    walk_all_objs1_llsync(&list);
    walk_all_objs2(&list);
    walk_all_objs3(&list);
    walk_all_objs3_llsync(&list);
    walk_all_objs4(&list);

    del_all_objs(&list);

    add_obj_head(&list);
    add_obj_head2(&list);
    add_obj_second(&list);
    add_obj_head_llsync(&list);
    add_obj_head2_llsync(&list);
    add_obj_second_llsync(&list);
    add_obj_head(&list);
    add_obj_head(&list);
    hlist_set_head(&list2, &list);
    hlist_set_head(&list, &list2);

    del_all_objs_llsync(&list);

    return 0;
}