linux內核中的list太好用了，可惜VC編譯器不支持 typeof?關鍵字，將linux內核中的list直接移植過來不能用
修改所有與typeof相關的代碼后，終于可以勉強在VC下運行起來了，但是還不完美，list_for_each_entry和list_for_each_entry_safe需要增加一個參數表示變量的類型
修改后的代碼如下
#ifndef __EKWIN__LIST__H__ #define __EKWIN__LIST__H__#define LIST_POISON1 ((struct list_head *) 0) #define LIST_POISON2 ((struct list_head *) 0) #define HLIST_POISON1 ((struct hlist_node *) 0) #define HLIST_POISON2 ((struct hlist_node **) 0)#define prefetch(x) (x) #define likely(x) (x) #define unlikely(x) (x) #define container_of(ptr, type, member) \(type *)( (char *)ptr - offsetof(type,member) )/** Simple doubly linked list implementation.** Some of the internal functions ("__xxx") are useful when* manipulating whole lists rather than single entries, as* sometimes we already know the next/prev entries and we can* generate better code by using them directly rather than* using the generic single-entry routines.*/struct list_head {struct list_head *next, *prev; };#define LIST_HEAD_INIT(name) { &(name), &(name) }#define LIST_HEAD(name) \struct list_head name = LIST_HEAD_INIT(name)static inline void INIT_LIST_HEAD(struct list_head *list) {list->next = list;list->prev = list; }static inline void __list_add(struct list_head *node,struct list_head *prev,struct list_head *next) {next->prev = node;node->next = next;node->prev = prev;prev->next = node; }/*** list_add - add a new entry* @new: new entry to be added* @head: list head to add it after** Insert a new entry after the specified head.* This is good for implementing stacks.*/ static inline void list_add(struct list_head *node, struct list_head *head) {__list_add(node, head, head->next); }/*** list_add_tail - add a new entry* @new: new entry to be added* @head: list head to add it before** Insert a new entry before the specified head.* This is useful for implementing queues.*/ static inline void list_add_tail(struct list_head *node, struct list_head *head) {__list_add(node, head->prev, head); }/** Delete a list entry by making the prev/next entries* point to each other.** This is only for internal list manipulation where we know* the prev/next entries already!*/ static inline void __list_del(struct list_head * prev, struct list_head * next) {next->prev = prev;prev->next = next; }/*** list_del - deletes entry from list.* @entry: the element to delete from the list.* Note: list_empty() on entry does not return true after this, the entry is* in an undefined state.*/ static inline void list_del(struct list_head *entry) {__list_del(entry->prev, entry->next);entry->next = LIST_POISON1;entry->prev = LIST_POISON2; }/*** list_replace - replace old entry by new one* @old : the element to be replaced* @new : the new element to insert** If @old was empty, it will be overwritten.*/ static inline void list_replace(struct list_head *old,struct list_head *node) {node->next = old->next;node->next->prev = node;node->prev = old->prev;node->prev->next = node; }static inline void list_replace_init(struct list_head *old,struct list_head *node) {list_replace(old, node);INIT_LIST_HEAD(old); }/*** list_del_init - deletes entry from list and reinitialize it.* @entry: the element to delete from the list.*/ static inline void list_del_init(struct list_head *entry) {__list_del(entry->prev, entry->next);INIT_LIST_HEAD(entry); }/*** list_move - delete from one list and add as another's head* @list: the entry to move* @head: the head that will precede our entry*/ static inline void list_move(struct list_head *list, struct list_head *head) {__list_del(list->prev, list->next);list_add(list, head); }/*** list_move_tail - delete from one list and add as another's tail* @list: the entry to move* @head: the head that will follow our entry*/ static inline void list_move_tail(struct list_head *list,struct list_head *head) {__list_del(list->prev, list->next);list_add_tail(list, head); }/*** list_is_last - tests whether @list is the last entry in list @head* @list: the entry to test* @head: the head of the list*/ static inline int list_is_last(const struct list_head *list,const struct list_head *head) {return list->next == head; } static inline int list_is_first(const struct list_head *list,const struct list_head *head) {return list->prev == head; }/*** list_empty - tests whether a list is empty* @head: the list to test.*/ static inline int list_empty(const struct list_head *head) {return head->next == head; }/*** list_empty_careful - tests whether a list is empty and not being modified* @head: the list to test** Description:* tests whether a list is empty _and_ checks that no other CPU might be* in the process of modifying either member (next or prev)** NOTE: using list_empty_careful() without synchronization* can only be safe if the only activity that can happen* to the list entry is list_del_init(). Eg. it cannot be used* if another CPU could re-list_add() it.*/ static inline int list_empty_careful(const struct list_head *head) {struct list_head *next = head->next;return (next == head) && (next == head->prev); }/*** list_is_singular - tests whether a list has just one entry.* @head: the list to test.*/ static inline int list_is_singular(const struct list_head *head) {return !list_empty(head) && (head->next == head->prev); }static inline void __list_cut_position(struct list_head *list,struct list_head *head, struct list_head *entry) {struct list_head *new_first = entry->next;list->next = head->next;list->next->prev = list;list->prev = entry;entry->next = list;head->next = new_first;new_first->prev = head; }/*** list_cut_position - cut a list into two* @list: a new list to add all removed entries* @head: a list with entries* @entry: an entry within head, could be the head itself* and if so we won't cut the list** This helper moves the initial part of @head, up to and* including @entry, from @head to @list. You should* pass on @entry an element you know is on @head. @list* should be an empty list or a list you do not care about* losing its data.**/ static inline void list_cut_position(struct list_head *list,struct list_head *head, struct list_head *entry) {if (list_empty(head))return;if (list_is_singular(head) &&(head->next != entry && head != entry))return;if (entry == head)INIT_LIST_HEAD(list);else__list_cut_position(list, head, entry); }static inline void __list_splice(const struct list_head *list,struct list_head *prev,struct list_head *next) {struct list_head *first = list->next;struct list_head *last = list->prev;first->prev = prev;prev->next = first;last->next = next;next->prev = last; }/*** list_splice - join two lists, this is designed for stacks* @list: the new list to add.* @head: the place to add it in the first list.*/ static inline void list_splice(const struct list_head *list,struct list_head *head) {if (!list_empty(list))__list_splice(list, head, head->next); }/*** list_splice_tail - join two lists, each list being a queue* @list: the new list to add.* @head: the place to add it in the first list.*/ static inline void list_splice_tail(struct list_head *list,struct list_head *head) {if (!list_empty(list))__list_splice(list, head->prev, head); }/*** list_splice_init - join two lists and reinitialise the emptied list.* @list: the new list to add.* @head: the place to add it in the first list.** The list at @list is reinitialised*/ static inline void list_splice_init(struct list_head *list,struct list_head *head) {if (!list_empty(list)) {__list_splice(list, head, head->next);INIT_LIST_HEAD(list);} }/*** list_splice_tail_init - join two lists and reinitialise the emptied list* @list: the new list to add.* @head: the place to add it in the first list.** Each of the lists is a queue.* The list at @list is reinitialised*/ static inline void list_splice_tail_init(struct list_head *list,struct list_head *head) {if (!list_empty(list)) {__list_splice(list, head->prev, head);INIT_LIST_HEAD(list);} }/*** list_entry - get the struct for this entry* @ptr: the &struct list_head pointer.* @type: the type of the struct this is embedded in.* @member: the name of the list_struct within the struct.*/ #define list_entry(ptr, type, member) \container_of(ptr, type, member)/*** list_first_entry - get the first element from a list* @ptr: the list head to take the element from.* @type: the type of the struct this is embedded in.* @member: the name of the list_struct within the struct.** Note, that list is expected to be not empty.*/ #define list_first_entry(ptr, type, member) \list_entry((ptr)->next, type, member) #define list_last_entry(ptr, type, member) \list_entry((ptr)->prev, type, member)/*** list_for_each - iterate over a list* @pos: the &struct list_head to use as a loop cursor.* @head: the head for your list.*/ #define list_for_each(pos, head) \for (pos = (head)->next; prefetch(pos->next), pos != (head); \pos = pos->next)/*** __list_for_each - iterate over a list* @pos: the &struct list_head to use as a loop cursor.* @head: the head for your list.** This variant differs from list_for_each() in that it's the* simplest possible list iteration code, no prefetching is done.* Use this for code that knows the list to be very short (empty* or 1 entry) most of the time.*/ #define __list_for_each(pos, head) \for (pos = (head)->next; pos != (head); pos = pos->next)/*** list_for_each_prev - iterate over a list backwards* @pos: the &struct list_head to use as a loop cursor.* @head: the head for your list.*/ #define list_for_each_prev(pos, head) \for (pos = (head)->prev; prefetch(pos->prev), pos != (head); \pos = pos->prev)/*** list_for_each_safe - iterate over a list safe against removal of list entry* @pos: the &struct list_head to use as a loop cursor.* @n: another &struct list_head to use as temporary storage* @head: the head for your list.*/ #define list_for_each_safe(pos, n, head) \for (pos = (head)->next, n = pos->next; pos != (head); \pos = n, n = pos->next)/*** list_for_each_prev_safe - iterate over a list backwards safe against removal of list entry* @pos: the &struct list_head to use as a loop cursor.* @n: another &struct list_head to use as temporary storage* @head: the head for your list.*/ #define list_for_each_prev_safe(pos, n, head) \for (pos = (head)->prev, n = pos->prev; \prefetch(pos->prev), pos != (head); \pos = n, n = pos->prev)/*** list_for_each_entry - iterate over list of given type* @pos: the type * to use as a loop cursor.* @head: the head for your list.* @member: the name of the list_struct within the struct.*/ #define list_for_each_entry(postp, pos, head, member) \for (pos = list_entry((head)->next, postp, member); \prefetch(pos->member.next), &pos->member != (head); \pos = list_entry(pos->member.next, postp, member))/*** list_for_each_entry_safe - iterate over list of given type safe against removal of list entry* @pos: the type * to use as a loop cursor.* @n: another type * to use as temporary storage* @head: the head for your list.* @member: the name of the list_struct within the struct.*/ #define list_for_each_entry_safe(postp, pos, n, head, member) \for (pos = list_entry((head)->next, postp, member), \n = list_entry(pos->member.next, postp, member); \&pos->member != (head); \pos = n, n = list_entry(n->member.next, postp, member))/** Double linked lists with a single pointer list head.* Mostly useful for hash tables where the two pointer list head is* too wasteful.* You lose the ability to access the tail in O(1).*/struct hlist_head {struct hlist_node *first; };struct hlist_node {struct hlist_node *next, **pprev; };#define HLIST_HEAD_INIT { .first = NULL } #define HLIST_HEAD(name) struct hlist_head name = { .first = NULL } #define INIT_HLIST_HEAD(ptr) ((ptr)->first = NULL) static inline void INIT_HLIST_NODE(struct hlist_node *h) {h->next = NULL;h->pprev = NULL; }static inline int hlist_unhashed(const struct hlist_node *h) {return !h->pprev; }static inline int hlist_empty(const struct hlist_head *h) {return !h->first; }static inline void __hlist_del(struct hlist_node *n) {struct hlist_node *next = n->next;struct hlist_node **pprev = n->pprev;*pprev = next;if (next)next->pprev = pprev; }static inline void hlist_del(struct hlist_node *n) {__hlist_del(n);n->next = HLIST_POISON1;n->pprev = HLIST_POISON2; }static inline void hlist_del_init(struct hlist_node *n) {if (!hlist_unhashed(n)) {__hlist_del(n);INIT_HLIST_NODE(n);} }static inline void hlist_add_head(struct hlist_node *n, struct hlist_head *h) {struct hlist_node *first = h->first;n->next = first;if (first)first->pprev = &n->next;h->first = n;n->pprev = &h->first; }/* next must be != NULL */ static inline void hlist_add_before(struct hlist_node *n,struct hlist_node *next) {n->pprev = next->pprev;n->next = next;next->pprev = &n->next;*(n->pprev) = n; }static inline void hlist_add_after(struct hlist_node *n,struct hlist_node *next) {next->next = n->next;n->next = next;next->pprev = &n->next;if(next->next)next->next->pprev = &next->next; }/** Move a list from one list head to another. Fixup the pprev* reference of the first entry if it exists.*/ static inline void hlist_move_list(struct hlist_head *old,struct hlist_head *node) {node->first = old->first;if (node->first)node->first->pprev = &node->first;old->first = NULL; }#define hlist_entry(ptr, type, member) container_of(ptr,type,member)#define hlist_for_each(pos, head) \for (pos = (head)->first; pos; \pos = pos->next)#define hlist_for_each_safe(pos, n, head) \for (pos = (head)->first; pos; \pos = n)/*** hlist_for_each_entry - iterate over list of given type* @tpos: the type * to use as a loop cursor.* @pos: the &struct hlist_node to use as a loop cursor.* @head: the head for your list.* @member: the name of the hlist_node within the struct.*/ #define hlist_for_each_entry(tpos, pos, head, member) \for (pos = (head)->first; \pos && ({ prefetch(pos->next); 1;}) && \({ tpos = hlist_entry(pos, typeof(*tpos), member); 1;}); \pos = pos->next)/*** hlist_for_each_entry_safe - iterate over list of given type safe against removal of list entry* @tpos: the type * to use as a loop cursor.* @pos: the &struct hlist_node to use as a loop cursor.* @n: another &struct hlist_node to use as temporary storage* @head: the head for your list.* @member: the name of the hlist_node within the struct.*/ #define hlist_for_each_entry_safe(tpos, pos, n, head, member) \for (pos = (head)->first; \pos && ({ n = pos->next; 1; }) && \({ tpos = hlist_entry(pos, typeof(*tpos), member); 1;}); \pos = n)#define list_next(ptr) \((ptr)->member.next) #define list_prev(ptr, member) \((ptr)->member.prev)static inline int list_count(struct list_head *head) {int count = 0;struct list_head *pos;list_for_each(pos, head) {count++;}return count; }/* 2^31 + 2^29 - 2^25 + 2^22 - 2^19 - 2^16 + 1 */ #define GOLDEN_RATIO_PRIME_32 0x9e370001UL #define GOLDEN_RATIO_PRIME GOLDEN_RATIO_PRIME_32 #define hash_long(val, bits) hash_32(val, bits)static inline unsigned int hash_32(unsigned int val, unsigned int bits) {/* On some cpus multiply is faster, on others gcc will do shifts */unsigned int hash = val * GOLDEN_RATIO_PRIME_32;/* High bits are more random, so use them. */return hash >> (32 - bits); }static inline unsigned long hash_ptr(void *ptr, unsigned int bits) {return hash_long((unsigned long)ptr, bits); }#endif // __EKWIN__LIST__H__
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