mirror of
https://github.com/bellard/quickjs.git
synced 2024-11-21 21:28:12 +08:00
100 lines
3.0 KiB
C
100 lines
3.0 KiB
C
/*
|
|
* Linux klist like system
|
|
*
|
|
* Copyright (c) 2016-2017 Fabrice Bellard
|
|
*
|
|
* 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.
|
|
*/
|
|
#ifndef LIST_H
|
|
#define LIST_H
|
|
|
|
#ifndef NULL
|
|
#include <stddef.h>
|
|
#endif
|
|
|
|
struct list_head {
|
|
struct list_head *prev;
|
|
struct list_head *next;
|
|
};
|
|
|
|
#define LIST_HEAD_INIT(el) { &(el), &(el) }
|
|
|
|
/* return the pointer of type 'type *' containing 'el' as field 'member' */
|
|
#define list_entry(el, type, member) container_of(el, type, member)
|
|
|
|
static inline void init_list_head(struct list_head *head)
|
|
{
|
|
head->prev = head;
|
|
head->next = head;
|
|
}
|
|
|
|
/* insert 'el' between 'prev' and 'next' */
|
|
static inline void __list_add(struct list_head *el,
|
|
struct list_head *prev, struct list_head *next)
|
|
{
|
|
prev->next = el;
|
|
el->prev = prev;
|
|
el->next = next;
|
|
next->prev = el;
|
|
}
|
|
|
|
/* add 'el' at the head of the list 'head' (= after element head) */
|
|
static inline void list_add(struct list_head *el, struct list_head *head)
|
|
{
|
|
__list_add(el, head, head->next);
|
|
}
|
|
|
|
/* add 'el' at the end of the list 'head' (= before element head) */
|
|
static inline void list_add_tail(struct list_head *el, struct list_head *head)
|
|
{
|
|
__list_add(el, head->prev, head);
|
|
}
|
|
|
|
static inline void list_del(struct list_head *el)
|
|
{
|
|
struct list_head *prev, *next;
|
|
prev = el->prev;
|
|
next = el->next;
|
|
prev->next = next;
|
|
next->prev = prev;
|
|
el->prev = NULL; /* fail safe */
|
|
el->next = NULL; /* fail safe */
|
|
}
|
|
|
|
static inline int list_empty(struct list_head *el)
|
|
{
|
|
return el->next == el;
|
|
}
|
|
|
|
#define list_for_each(el, head) \
|
|
for(el = (head)->next; el != (head); el = el->next)
|
|
|
|
#define list_for_each_safe(el, el1, head) \
|
|
for(el = (head)->next, el1 = el->next; el != (head); \
|
|
el = el1, el1 = el->next)
|
|
|
|
#define list_for_each_prev(el, head) \
|
|
for(el = (head)->prev; el != (head); el = el->prev)
|
|
|
|
#define list_for_each_prev_safe(el, el1, head) \
|
|
for(el = (head)->prev, el1 = el->prev; el != (head); \
|
|
el = el1, el1 = el->prev)
|
|
|
|
#endif /* LIST_H */
|