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/*
Copyright (c) 2003-2006 Thomas Graf <tgraf@suug.ch>
Taken from the libnl project and customized to fit for latrace.
Released undder following license notice.
Copyright (C) 2008, 2009, 2010 Jiri Olsa <olsajiri@gmail.com>
This file is part of the latrace.
The latrace is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
The latrace is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with the latrace (file COPYING). If not, see
<http://www.gnu.org/licenses/>.
*/
#ifndef LIST_H
#define LIST_H
struct lt_list_head
{
struct lt_list_head * next;
struct lt_list_head * prev;
};
static inline void __lt_list_add(struct lt_list_head *obj,
struct lt_list_head *prev,
struct lt_list_head *next)
{
prev->next = obj;
obj->prev = prev;
next->prev = obj;
obj->next = next;
}
static inline void lt_list_add_tail(struct lt_list_head *obj,
struct lt_list_head *head)
{
__lt_list_add(obj, head->prev, head);
}
static inline void lt_list_add_head(struct lt_list_head *obj,
struct lt_list_head *head)
{
__lt_list_add(obj, head, head->next);
}
static inline void lt_list_del(struct lt_list_head *obj)
{
obj->next->prev = obj->prev;
obj->prev->next = obj->next;
}
static inline int lt_list_empty(struct lt_list_head *head)
{
return head->next == head;
}
#define lt_container_of(ptr, type, member) ({ \
const typeof( ((type *)0)->member ) *__mptr = (ptr); \
(type *)( (char *)__mptr - ((size_t) &((type *)0)->member));})
#define lt_list_entry(ptr, type, member) \
lt_container_of(ptr, type, member)
#define lt_list_at_tail(pos, head, member) \
((pos)->member.next == (head))
#define lt_list_at_head(pos, head, member) \
((pos)->member.prev == (head))
#define LT_LIST_HEAD(name) \
struct lt_list_head name = { &(name), &(name) }
#define lt_list_first_entry(head, type, member) \
lt_list_entry((head)->next, type, member)
#define lt_list_for_each_entry(pos, head, member) \
for (pos = lt_list_entry((head)->next, typeof(*pos), member); \
&(pos)->member != (head); \
(pos) = lt_list_entry((pos)->member.next, typeof(*(pos)), member))
#define lt_list_for_each_entry_safe(pos, n, head, member) \
for (pos = lt_list_entry((head)->next, typeof(*pos), member), \
n = lt_list_entry(pos->member.next, typeof(*pos), member); \
&(pos)->member != (head); \
pos = n, n = lt_list_entry(n->member.next, typeof(*n), member))
#define lt_init_list_head(head) \
do { (head)->next = (head); (head)->prev = (head); } while (0)
#endif
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