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rbtree.h: Added WINE_RB_FOR_EACH_DESTRUCTOR and WINE_RB_FOR_EACH_ENTRY_DESTRUCTOR helpers for implementing tree destructors. 

Signed-off-by: Jacek Caban <jacek@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Jacek Caban 2017-02-13 21:12:15 +01:00 committed by Alexandre Julliard
parent 68d2f9c6a6
commit 357bf1b569
1 changed files with 14 additions and 6 deletions
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20
include/wine/rbtree.h
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@ -136,16 +136,24 @@ static inline struct wine_rb_entry *wine_rb_postorder_next(struct wine_rb_entry
&(elem)->field; \ &(elem)->field; \
(elem) = WINE_RB_ENTRY_VALUE(wine_rb_next(&elem->field), type, field)) (elem) = WINE_RB_ENTRY_VALUE(wine_rb_next(&elem->field), type, field))
/* iterate through the tree using using postorder, making it safe to free the entry */
#define WINE_RB_FOR_EACH_DESTRUCTOR(cursor, cursor2, tree) \
for ((cursor) = wine_rb_postorder_head((tree)->root); \
(cursor) && (((cursor2) = wine_rb_postorder_next(cursor)) || 1); \
(cursor) = (cursor2))
/* iterate through the tree using a tree entry and postorder, making it safe to free the entry */
#define WINE_RB_FOR_EACH_ENTRY_DESTRUCTOR(elem, elem2, tree, type, field) \
for ((elem) = WINE_RB_ENTRY_VALUE(wine_rb_postorder_head((tree)->root), type, field); \
&(elem)->field \
&& (((elem2) = WINE_RB_ENTRY_VALUE(wine_rb_postorder_next(&(elem)->field), type, field)) || 1); \
(elem) = (elem2))
static inline void wine_rb_postorder(struct wine_rb_tree *tree, wine_rb_traverse_func_t *callback, void *context) static inline void wine_rb_postorder(struct wine_rb_tree *tree, wine_rb_traverse_func_t *callback, void *context)
{ {
struct wine_rb_entry *iter, *next; struct wine_rb_entry *iter, *next;
WINE_RB_FOR_EACH_DESTRUCTOR(iter, next, tree) callback(iter, context);
for (iter = wine_rb_postorder_head(tree->root); iter; iter = next)
{
next = wine_rb_postorder_next(iter);
callback(iter, context);
}
} }
static inline void wine_rb_init(struct wine_rb_tree *tree, wine_rb_compare_func_t compare) static inline void wine_rb_init(struct wine_rb_tree *tree, wine_rb_compare_func_t compare)