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util/list.h: add a function to move an item in a list

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This allows for a 1:1 replacement of simple_list move_to_head (though
I've tried to make this function more generally useful.

Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15418>
This commit is contained in:
Dylan Baker 2022-03-16 11:19:49 -07:00
parent 4b47e0e125
commit 0ae787f223
1 changed files with 13 additions and 0 deletions
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13
src/util/list.h
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@ -179,6 +179,19 @@ static inline void list_validate(const struct list_head *list)
assert(node->next->prev == node && node->prev->next == node);
}
/**
* Move an item from one place in a list to another
*
* The item can be in this list, or in another.
*
* @param item The item to move
* @param loc The element to put the item in front of
*/
static inline void list_move_to(struct list_head *item, struct list_head *loc) {
list_del(item);
list_add(item, loc);
}
#define LIST_ENTRY(__type, __item, __field) \
((__type *)(((char *)(__item)) - offsetof(__type, __field)))