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bde90b4a15
Replace all license headers with the SPDX-License-Identitier headers to follow the current recommendations. Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
79 lines
1.9 KiB
C
79 lines
1.9 KiB
C
/*
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* Copyright (c) 2016, Linaro Ltd.
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* All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef __LIST_H__
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#define __LIST_H__
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#include <stdbool.h>
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#include <stddef.h>
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#define container_of(ptr, type, member) ({ \
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typeof(((type *)0)->member)*__mptr = (ptr); \
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(type *)(void *)((char *)__mptr - offsetof(type, member)); \
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})
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struct list_head {
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struct list_head *prev;
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struct list_head *next;
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};
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#define LIST_INIT(list) { &(list), &(list) }
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static inline void list_init(struct list_head *list)
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{
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list->prev = list->next = list;
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}
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static inline bool list_empty(struct list_head *list)
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{
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return list->next == list;
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}
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static inline void list_add(struct list_head *list, struct list_head *item)
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{
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struct list_head *prev = list->prev;
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item->next = list;
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item->prev = prev;
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prev->next = list->prev = item;
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}
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static inline void list_del(struct list_head *item)
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{
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item->prev->next = item->next;
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item->next->prev = item->prev;
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}
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#define list_for_each(item, list) \
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for (item = (list)->next; item != list; item = item->next)
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#define list_for_each_safe(item, next, list) \
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for (item = (list)->next, next = item->next; item != list; item = next, next = item->next)
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#define list_entry(item, type, member) \
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container_of(item, type, member)
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#define list_entry_first(list, type, member) \
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container_of((list)->next, type, member)
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#define list_entry_next(item, member) \
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container_of((item)->member.next, typeof(*(item)), member)
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#define list_for_each_entry(item, list, member) \
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for (item = list_entry_first(list, typeof(*(item)), member); \
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&item->member != list; \
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item = list_entry_next(item, member))
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#define list_for_each_entry_safe(item, next, list, member) \
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for (item = list_entry_first(list, typeof(*(item)), member), \
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next = list_entry_next(item, member); \
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&item->member != list; \
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item = next, \
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next = list_entry_next(item, member)) \
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#endif
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