105 lines
3.1 KiB
C
105 lines
3.1 KiB
C
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/*================================================================
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Copyright (c) 2021, Quectel Wireless Solutions Co., Ltd. All rights reserved.
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Quectel Wireless Solutions Proprietary and Confidential.
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=================================================================*/
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#ifndef __LIST_H__
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#define __LIST_H__
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struct list_head {
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struct list_head *next;
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struct list_head *prev;
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};
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#define LIST_HEAD_INIT(name) { &(name), &(name) }
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#undef LIST_HEAD
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#define LIST_HEAD(name) \
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struct list_head name = LIST_HEAD_INIT(name)
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static inline void list_init(struct list_head *head)
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{
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head->prev = head;
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head->next = head;
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}
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static inline void __list_add(struct list_head *new,
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struct list_head *prev,
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struct list_head *next)
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{
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next->prev = new;
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new->next = next;
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new->prev = prev;
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prev->next = new;
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}
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static inline void list_add(struct list_head *new, struct list_head *head)
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{
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__list_add(new, head, head->next);
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}
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static inline void list_add_tail(struct list_head *new, struct list_head *head)
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{
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__list_add(new, head->prev, head);
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}
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static inline void __list_del(struct list_head *prev, struct list_head *next)
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{
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next->prev = prev;
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prev->next = next;
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}
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static inline void list_del(struct list_head *entry)
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{
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__list_del(entry->prev, entry->next);
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entry->next = (void *)0;
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entry->prev = (void *)0;
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}
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static inline int list_empty(struct list_head *head)
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{
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return head->next == head;
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}
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static inline int list_len(struct list_head *head)
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{
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struct list_head *list;
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int count = 0;
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for(list = head->next; list != head; list = list->next) {
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count++;
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}
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return count;
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}
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#define list_entry(ptr, type, member) \
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((type *)((char *)(ptr)-(unsigned long)(&((type *)0)->member)))
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#define list_for_each(pos, head) \
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for (pos = (head)->next; pos != (head); \
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pos = pos->next)
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#define list_for_each_prev(pos, head) \
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for (pos = (head)->prev; pos != (head); \
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pos = pos->prev)
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#define list_for_each_safe(pos, n, head) \
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for (pos = (head)->next, n = pos->next; pos != (head); \
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pos = n, n = pos->next)
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#define list_for_each_entry(pos, head, member) \
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for (pos = list_entry((head)->next, typeof(*pos), member); \
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&pos->member != (head); \
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pos = list_entry(pos->member.next, typeof(*pos), member))
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#define list_for_each_entry_safe(pos, n, head, member) \
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for (pos = list_entry((head)->next, typeof(*pos), member), \
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n = list_entry(pos->member.next, typeof(*pos), member); \
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&pos->member != (head); \
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pos = n, n = list_entry(n->member.next, typeof(*n), member))
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#endif /* __LIST_H__ */
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