diff options
Diffstat (limited to 'qcom/qrtr/src/list.h')
-rw-r--r-- | qcom/qrtr/src/list.h | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/qcom/qrtr/src/list.h b/qcom/qrtr/src/list.h new file mode 100644 index 0000000..d740743 --- /dev/null +++ b/qcom/qrtr/src/list.h @@ -0,0 +1,128 @@ +#ifndef _LIST_H_ +#define _LIST_H_ + +#ifndef offsetof +#define offsetof(type, md) ((unsigned long)&((type *)0)->md) +#endif + +#ifndef container_of +#define container_of(ptr, type, member) \ + ((type *)((char *)(ptr) - offsetof(type, member))) +#endif + +struct list_item { + struct list_item *next; + struct list_item *prev; +}; + +struct list { + struct list_item *head; + struct list_item *tail; +}; + +#define LIST_INIT(name) { 0, 0 } + +#define LIST(name) \ + struct list name = LIST_INIT(name) + +#define list_entry(ptr, type, member) \ + container_of(ptr, type, member) + +static inline void list_init(struct list *list) +{ + list->head = 0; + list->tail = 0; +} + +static inline void list_append(struct list *list, struct list_item *item) +{ + item->next = 0; + item->prev = list->tail; + if (list->tail != 0) + list->tail->next = item; + else + list->head = item; + list->tail = item; +} + +static inline void list_prepend(struct list *list, struct list_item *item) +{ + item->prev = 0; + item->next = list->head; + if (list->head == 0) + list->tail = item; + list->head = item; +} + +static inline void list_insert(struct list *list, struct list_item *after, struct list_item *item) +{ + if (after == 0) { + list_prepend(list, item); + return; + } + item->prev = after; + item->next = after->next; + after->next = item; + if (item->next) + item->next->prev = item; + if (list->tail == after) + list->tail = item; +} + +static inline void list_remove(struct list *list, struct list_item *item) +{ + if (item->next) + item->next->prev = item->prev; + if (list->head == item) { + list->head = item->next; + if (list->head == 0) + list->tail = 0; + } else { + item->prev->next = item->next; + if (list->tail == item) + list->tail = item->prev; + } + item->prev = item->next = 0; +} + +static inline struct list_item *list_pop(struct list *list) +{ + struct list_item *item; + item = list->head; + if (item == 0) + return 0; + list_remove(list, item); + return item; +} + +static inline struct list_item *list_last(struct list *list) +{ + return list->tail; +} + +static inline struct list_item *list_first(struct list *list) +{ + return list->head; +} + + +static inline struct list_item *list_next(struct list_item *item) +{ + return item->next; +} + +#define list_push list_append + +#define list_for_each(_list, _iter) \ + for (_iter = (_list)->head; (_iter) != 0; _iter = (_iter)->next) + +#define list_for_each_after(_node, _iter) \ + for (_iter = (_node)->next; (_iter) != 0; _iter = (_iter)->next) + +#define list_for_each_safe(_list, _iter, _bkup) \ + for (_iter = (_list)->head; (_iter) != 0 && ((_bkup = (_iter)->next) || 1); _iter = (_bkup)) + +#define list_for_each_safe_after(_node, _iter, _bkup) \ + for (_iter = (_node)->next; (_iter) != 0 && ((_bkup = (_iter)->next) || 1); _iter = (_bkup)) + +#endif |