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util/list: make safe for C++

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This commit is contained in:
Max Kellermann 2012-07-30 10:57:46 +02:00
parent 659d1c7cf7
commit 123ae985d5
1 changed files with 25 additions and 24 deletions
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49
src/util/list.h
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@ -47,8 +47,8 @@
* under normal circumstances, used to verify that nobody uses
* non-initialized list entries.
*/
#define LIST_POISON1 ((void *) 0x00100100)
#define LIST_POISON2 ((void *) 0x00200200)
#define LIST_POISON1 ((struct list_head *)(void *) 0x00100100)
#define LIST_POISON2 ((struct list_head *)(void *) 0x00200200)
/*
* Simple doubly linked list implementation.
@ -82,46 +82,47 @@ static inline void INIT_LIST_HEAD(struct list_head *list)
* the prev/next entries already!
*/
#ifndef CONFIG_DEBUG_LIST
static inline void __list_add(struct list_head *new,
static inline void __list_add(struct list_head *new_item,
struct list_head *prev,
struct list_head *next)
{
next->prev = new;
new->next = next;
new->prev = prev;
prev->next = new;
next->prev = new_item;
new_item->next = next;
new_item->prev = prev;
prev->next = new_item;
}
#else
extern void __list_add(struct list_head *new,
struct list_head *prev,
struct list_head *next);
extern void __list_add(struct list_head *new_item,
struct list_head *prev,
struct list_head *next);
#endif
/**
* list_add - add a new entry
* @new: new entry to be added
* @new_item: 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 *new, struct list_head *head)
static inline void list_add(struct list_head *new_item, struct list_head *head)
{
__list_add(new, head, head->next);
__list_add(new_item, head, head->next);
}
/**
* list_add_tail - add a new entry
* @new: new entry to be added
* @new_item: 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 *new, struct list_head *head)
static inline void
list_add_tail(struct list_head *new_item, struct list_head *head)
{
__list_add(new, head->prev, head);
__list_add(new_item, head->prev, head);
}
/*
@ -163,23 +164,23 @@ extern void list_del(struct list_head *entry);
/**
* list_replace - replace old entry by new one
* @old : the element to be replaced
* @new : the new element to insert
* @new_item : 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 *new)
struct list_head *new_item)
{
new->next = old->next;
new->next->prev = new;
new->prev = old->prev;
new->prev->next = new;
new_item->next = old->next;
new_item->next->prev = new_item;
new_item->prev = old->prev;
new_item->prev->next = new_item;
}
static inline void list_replace_init(struct list_head *old,
struct list_head *new)
struct list_head *new_item)
{
list_replace(old, new);
list_replace(old, new_item);
INIT_LIST_HEAD(old);
}