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- #ifndef AOS_LIST_H
- #define AOS_LIST_H
- #ifdef __cplusplus
- extern "C" {
- #endif
- /*
- * Get offset of a member variable.
- *
- * @param[in] type the type of the struct this is embedded in.
- * @param[in] member the name of the variable within the struct.
- */
- #define aos_offsetof(type, member) ((size_t)&(((type *)0)->member))
- /*
- * Get the struct for this entry.
- *
- * @param[in] ptr the list head to take the element from.
- * @param[in] type the type of the struct this is embedded in.
- * @param[in] member the name of the variable within the struct.
- */
- #define aos_container_of(ptr, type, member) \
- ((type *) ((char *) (ptr) - aos_offsetof(type, member)))
- /* for double link list */
- typedef struct dlist_s {
- struct dlist_s *prev;
- struct dlist_s *next;
- } dlist_t;
- static inline void __dlist_add(dlist_t *node, dlist_t *prev, dlist_t *next)
- {
- node->next = next;
- node->prev = prev;
- prev->next = node;
- next->prev = node;
- }
- /*
- * Get the struct for this entry.
- *
- * @param[in] addr the list head to take the element from.
- * @param[in] type the type of the struct this is embedded in.
- * @param[in] member the name of the dlist_t within the struct.
- */
- #define dlist_entry(addr, type, member) \
- ((type *)((long)addr - aos_offsetof(type, member)))
- static inline void dlist_add(dlist_t *node, dlist_t *queue)
- {
- __dlist_add(node, queue, queue->next);
- }
- static inline void dlist_add_tail(dlist_t *node, dlist_t *queue)
- {
- __dlist_add(node, queue->prev, queue);
- }
- static inline void dlist_del(dlist_t *node)
- {
- dlist_t *prev = node->prev;
- dlist_t *next = node->next;
- prev->next = next;
- next->prev = prev;
- }
- static inline void dlist_init(dlist_t *node)
- {
- node->next = node->prev = node;
- }
- static inline void INIT_AOS_DLIST_HEAD(dlist_t *list)
- {
- list->next = list;
- list->prev = list;
- }
- static inline int dlist_empty(const dlist_t *head)
- {
- return head->next == head;
- }
- /*
- * Initialise the list.
- *
- * @param[in] list the list to be inited.
- */
- #define AOS_DLIST_INIT(list) {&(list), &(list)}
- /*
- * Get the first element from a list
- *
- * @param[in] ptr the list head to take the element from.
- * @param[in] type the type of the struct this is embedded in.
- * @param[in] member the name of the dlist_t within the struct.
- */
- #define dlist_first_entry(ptr, type, member) \
- dlist_entry((ptr)->next, type, member)
- /*
- * Iterate over a list.
- *
- * @param[in] pos the &struct dlist_t to use as a loop cursor.
- * @param[in] head he head for your list.
- */
- #define dlist_for_each(pos, head) \
- for (pos = (head)->next; pos != (head); pos = pos->next)
- /*
- * Iterate over a list safe against removal of list entry.
- *
- * @param[in] pos the &struct dlist_t to use as a loop cursor.
- * @param[in] n another &struct dlist_t to use as temporary storage.
- * @param[in] head he head for your list.
- */
- #define dlist_for_each_safe(pos, n, head) \
- for (pos = (head)->next, n = pos->next; pos != (head); \
- pos = n, n = pos->next)
- /*
- * Iterate over list of given type.
- *
- * @param[in] queue he head for your list.
- * @param[in] node the &struct dlist_t to use as a loop cursor.
- * @param[in] type the type of the struct this is embedded in.
- * @param[in] member the name of the dlist_t within the struct.
- */
- #define dlist_for_each_entry(queue, node, type, member) \
- for (node = aos_container_of((queue)->next, type, member); \
- &node->member != (queue); \
- node = aos_container_of(node->member.next, type, member))
- /*
- * Iterate over list of given type safe against removal of list entry.
- *
- * @param[in] queue the head for your list.
- * @param[in] n the type * to use as a temp.
- * @param[in] node the type * to use as a loop cursor.
- * @param[in] type the type of the struct this is embedded in.
- * @param[in] member the name of the dlist_t within the struct.
- */
- #define dlist_for_each_entry_safe(queue, n, node, type, member) \
- for (node = aos_container_of((queue)->next, type, member), \
- n = (queue)->next ? (queue)->next->next : NULL; \
- &node->member != (queue); \
- node = aos_container_of(n, type, member), n = n ? n->next : NULL)
- /*
- * Get the struct for this entry.
- * @param[in] ptr the list head to take the element from.
- * @param[in] type the type of the struct this is embedded in.
- * @param[in] member the name of the variable within the struct.
- */
- #define list_entry(ptr, type, member) \
- aos_container_of(ptr, type, member)
- /*
- * Iterate backwards over list of given type.
- *
- * @param[in] pos the type * to use as a loop cursor.
- * @param[in] head he head for your list.
- * @param[in] member the name of the dlist_t within the struct.
- * @param[in] type the type of the struct this is embedded in.
- */
- #define dlist_for_each_entry_reverse(pos, head, member, type) \
- for (pos = list_entry((head)->prev, type, member); \
- &pos->member != (head); \
- pos = list_entry(pos->member.prev, type, member))
- /*
- * Get the list length.
- *
- * @param[in] queue the head for your list.
- */
- int dlist_entry_number(dlist_t *queue);
- /*
- * Initialise the list.
- *
- * @param[in] name the list to be initialized.
- */
- #define AOS_DLIST_HEAD_INIT(name) { &(name), &(name) }
- /*
- * Initialise the list.
- *
- * @param[in] name the list to be initialized.
- */
- #define AOS_DLIST_HEAD(name) \
- dlist_t name = AOS_DLIST_HEAD_INIT(name)
- /* for single link list */
- typedef struct slist_s {
- struct slist_s *next;
- } slist_t;
- static inline void slist_add(slist_t *node, slist_t *head)
- {
- node->next = head->next;
- head->next = node;
- }
- void slist_add_tail(slist_t *node, slist_t *head);
- void slist_del(slist_t *node, slist_t *head);
- static inline int slist_empty(const slist_t *head)
- {
- return !head->next;
- }
- static inline void slist_init(slist_t *head)
- {
- head->next = 0;
- }
- static inline slist_t *slist_remove(slist_t *l, slist_t *n)
- {
- /* remove slist head */
- struct slist_s *node = l;
- while (node->next && node->next != n) node = node->next;
- /* remove node */
- if (node->next != (slist_t *)0) node->next = node->next->next;
- return l;
- }
- static inline slist_t *slist_first(slist_t *l)
- {
- return l->next;
- }
- static inline slist_t *slist_tail(slist_t *l)
- {
- while (l->next) l = l->next;
- return l;
- }
- static inline slist_t *slist_next(slist_t *n)
- {
- return n->next;
- }
- /*
- * Iterate over list of given type.
- *
- * @param[in] queue he head for your list.
- * @param[in] node the type * to use as a loop cursor.
- * @param[in] type the type of the struct this is embedded in.
- * @param[in] member the name of the slist_t within the struct.
- */
- #define slist_for_each_entry(queue, node, type, member) \
- for (node = (queue)->next? aos_container_of((queue)->next, type, member) : NULL; \
- node; \
- node = node->member.next ? aos_container_of(node->member.next, type, member) : NULL)
- /*
- * Iterate over list of given type safe against removal of list entry.
- *
- * @param[in] queue the head for your list.
- * @param[in] tmp the type * to use as a temp.
- * @param[in] node the type * to use as a loop cursor.
- * @param[in] type the type of the struct this is embedded in.
- * @param[in] member the name of the slist_t within the struct.
- */
- #define slist_for_each_entry_safe(queue, tmp, node, type, member) \
- for (node = (queue)->next? aos_container_of((queue)->next, type, member) : NULL, \
- tmp = (queue)->next ? (queue)->next->next : NULL; \
- node; \
- node = tmp ? aos_container_of(tmp, type, member) : NULL, tmp = tmp ? tmp->next : NULL)
- /*
- * Initialise the list.
- *
- * @param[in] name the list to be initialized.
- */
- #define AOS_SLIST_HEAD_INIT(name) {0}
- /*
- * Initialise the list.
- *
- * @param[in] name the list to be initialized.
- */
- #define AOS_SLIST_HEAD(name) \
- slist_t name = AOS_SLIST_HEAD_INIT(name)
- /*
- * Get the struct for this entry.
- * @param[in] addr the list head to take the element from.
- * @param[in] type the type of the struct this is embedded in.
- * @param[in] member the name of the slist_t within the struct.
- */
- #define slist_entry(addr, type, member) ( \
- addr ? (type *)((long)addr - aos_offsetof(type, member)) : (type *)addr \
- )
- /*
- * Get the first element from a list.
- *
- * @param[in] ptr the list head to take the element from.
- * @param[in] type the type of the struct this is embedded in.
- * @param[in] member the name of the slist_t within the struct.
- */
- #define slist_first_entry(ptr, type, member) \
- slist_entry((ptr)->next, type, member)
- /**
- * slist_tail_entry - get the tail element from a slist
- * @ptr: the slist head to take the element from.
- * @type: the type of the struct this is embedded in.
- * @member: the name of the slist_struct within the struct.
- *
- * Note, that slist is expected to be not empty.
- */
- #define slist_tail_entry(ptr, type, member) \
- slist_entry(slist_tail(ptr), type, member)
- /*
- * Get the list length.
- *
- * @param[in] queue the head for your list.
- */
- int slist_entry_number(slist_t *queue);
- #ifdef __cplusplus
- }
- #endif
- #endif /* AOS_LIST_H */
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