mirror of
https://github.com/geode-sdk/geode.git
synced 2024-12-19 20:32:53 -05:00
52 lines
No EOL
2.2 KiB
C
52 lines
No EOL
2.2 KiB
C
#pragma once
|
|
|
|
struct list_head {
|
|
struct list_head *next;
|
|
struct list_head *prev;
|
|
};
|
|
#define container_of(ptr, type, member) \
|
|
({ \
|
|
const __typeof(((type *)0)->member) *__mptr = (ptr); \
|
|
(type *)((char *)__mptr - offsetof(type, member)); \
|
|
})
|
|
|
|
#define INIT_LIST_HEAD(ptr) \
|
|
do { \
|
|
(ptr)->next = (ptr); \
|
|
(ptr)->prev = (ptr); \
|
|
} while (0)
|
|
|
|
static inline int list_empty(struct list_head *head) {
|
|
return head->next == head;
|
|
}
|
|
|
|
static void __list_add(struct list_head *new_node, struct list_head *prev, struct list_head *next) {
|
|
next->prev = new_node;
|
|
new_node->next = next;
|
|
new_node->prev = prev;
|
|
prev->next = new_node;
|
|
}
|
|
|
|
static inline void list_add(struct list_head *new_node, struct list_head *head) {
|
|
__list_add(new_node, head, head->next);
|
|
}
|
|
|
|
static inline void __list_del(struct list_head *prev, struct list_head *next) {
|
|
next->prev = prev;
|
|
prev->next = next;
|
|
}
|
|
|
|
static inline void list_del(struct list_head *entry) {
|
|
__list_del(entry->prev, entry->next);
|
|
entry->next = NULL;
|
|
entry->prev = NULL;
|
|
}
|
|
|
|
#define list_entry(ptr, type, member) container_of(ptr, type, member)
|
|
|
|
#define list_first_entry(ptr, type, member) list_entry((ptr)->next, type, member)
|
|
|
|
#define list_next_entry(pos, member) list_entry((pos)->member.next, __typeof(*(pos)), member)
|
|
|
|
#define list_for_each_entry(pos, head, member) \
|
|
for (pos = list_first_entry(head, __typeof(*pos), member); &pos->member != (head); pos = list_next_entry(pos, member)) |