blob: eda599b2839b85879500e75f3d56169b77997b62 [file] [log] [blame]
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#ifndef _SSI_PAL_LIST_H
#define _SSI_PAL_LIST_H
typedef struct SaSi_PalListItem {
struct SaSi_PalListItem *prev;
struct SaSi_PalListItem *next;
} SaSi_PalListItem_s;
/*!
* Initializes a list. Prev/Next points to the same head object.
*
* \param head The head of the list.
*/
static inline void SaSi_PalListInit(SaSi_PalListItem_s *head)
{
head->prev = head;
head->next = head;
}
/*!
* Add a new list item after head of list.
*
* \param new New entry to be added
* \param head List head to add it after
*/
static inline void SaSi_PalListAdd(SaSi_PalListItem_s *new, SaSi_PalListItem_s *head)
{
SaSi_PalListItem_s *next = head->next;
next->prev = new;
new->next = next;
new->prev = head;
head->next = new;
}
/*!
* Add a new list item after head of list.
*
* \param new New entry to be added
* \param head List head to add it after
*/
static inline void SaSi_PalListAddTail(SaSi_PalListItem_s *new, SaSi_PalListItem_s *head)
{
SaSi_PalListItem_s *prev = head->prev;
prev->next = new;
new->next = head;
new->prev = prev;
head->prev = new;
}
/*!
* Deletes entry from list.
*
* \param item The item to delete from the list.
*/
static inline void SaSi_PalListDel(SaSi_PalListItem_s *item)
{
SaSi_PalListItem_s *prev = item->prev;
SaSi_PalListItem_s *next = item->next;
prev->next = next;
next->prev = prev;
item->next = item;
item->prev = item;
}
/*!
* Checks whether a list is empty.
*
* \param head The list's head
*
* \return int True if empty list, False otherwise.
*/
static inline int SaSi_PalIsListEmpty(const SaSi_PalListItem_s *head)
{
return (head->next == head);
}
#endif