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/*
* YaGL
*
* Copyright (c) 2012 Samsung Electronics Co., Ltd. All rights reserved.
*
* Contact :
* Stanislav Vorobiov <s.vorobiov@samsung.com>
* Jinhyung Jo <jinhyung.jo@samsung.com>
* YeongKyoon Lee <yeongkyoon.lee@samsung.com>
*
* 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.
*
* Contributors:
* - S-Core Co., Ltd
*
*/
#ifndef _YAGL_LIST_H_
#define _YAGL_LIST_H_
#include "yagl_types.h"
struct yagl_list
{
struct yagl_list* prev;
struct yagl_list* next;
};
/*
* Private interface.
*/
static __inline void __yagl_list_add( struct yagl_list* nw,
struct yagl_list* prev,
struct yagl_list* next )
{
next->prev = nw;
nw->next = next;
nw->prev = prev;
prev->next = nw;
}
static __inline void __yagl_list_remove( struct yagl_list* prev,
struct yagl_list* next )
{
next->prev = prev;
prev->next = next;
}
/*
* Public interface.
*/
#define YAGL_DECLARE_LIST(name) struct yagl_list name = { &(name), &(name) }
static __inline void yagl_list_init(struct yagl_list* list)
{
list->next = list;
list->prev = list;
}
static __inline void yagl_list_add(struct yagl_list* head, struct yagl_list* nw)
{
__yagl_list_add(nw, head, head->next);
}
static __inline void yagl_list_add_tail(struct yagl_list* head, struct yagl_list* nw)
{
__yagl_list_add(nw, head->prev, head);
}
static __inline void yagl_list_remove(struct yagl_list* entry)
{
__yagl_list_remove(entry->prev, entry->next);
yagl_list_init(entry);
}
static __inline int yagl_list_empty(const struct yagl_list* head)
{
return ( (head->next == head) && (head->prev == head) );
}
#define yagl_list_first(container_type, iter, head, member) iter = yagl_containerof((head)->next, container_type, member)
#define yagl_list_last(container_type, iter, head, member) iter = yagl_containerof((head)->prev, container_type, member)
/*
* Iterate over list in direct and reverse order.
*/
#define yagl_list_for_each(container_type, iter, head, member) \
for ( iter = yagl_containerof((head)->next, container_type, member); \
&iter->member != (head); \
iter = yagl_containerof(iter->member.next, container_type, member) )
#define yagl_list_for_each_reverse(container_type, iter, head, member) \
for ( iter = yagl_containerof((head)->prev, container_type, member); \
&iter->member != (head); \
iter = yagl_containerof(iter->member.prev, container_type, member) )
/*
* Iterate over list in direct and reverse order, safe to list entries removal.
*/
#define yagl_list_for_each_safe(container_type, iter, tmp_iter, head, member) \
for ( iter = yagl_containerof((head)->next, container_type, member), \
tmp_iter = yagl_containerof(iter->member.next, container_type, member); \
&iter->member != (head); \
iter = tmp_iter, tmp_iter = yagl_containerof(tmp_iter->member.next, container_type, member) )
#define yagl_list_for_each_safe_reverse(container_type, iter, tmp_iter, head, member) \
for ( iter = yagl_containerof((head)->prev, container_type, member), \
tmp_iter = yagl_containerof(iter->member.prev, container_type, member); \
&iter->member != (head); \
iter = tmp_iter, tmp_iter = yagl_containerof(tmp_iter->member.prev, container_type, member) )
#endif
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