list.c

/*
 * Copyright (c) 2017 Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#include <jeffpc/error.h>
#include <jeffpc/list.h>

/*
 * Some of these functions are just too complicated to be implemented as
 * static inlines.
 */

void list_create(struct list *list, size_t size, size_t offset)
{
	if (size < (offset + sizeof(struct list_node)))
		panic("invalid size (%zu) and offset (%zu) combination",
		      size, offset);

	list->size = size;
	list->offset = offset;

	slist_init(&list->head);
}

void list_destroy(struct list *list)
{
	list->head.next = NULL;
	list->head.prev = NULL;
}

void list_move_tail(struct list *dst, struct list *src)
{
	VERIFY3U(dst->size, ==, src->size);
	VERIFY3U(dst->offset, ==, src->offset);

	slist_move_tail(&dst->head, &src->head);
}