Splay tree

include/structures/splay.h View source View on GitHub

Structs

splay_node

struct splay_node {
    struct splay_node  *left;
    struct splay_node  *right;
    struct splay_node  *parent;
};

splay_node_ops

struct splay_node_ops {
    int  (*cmp)(const struct splay_node *a, const struct splay_node *b);
    int  (*cmp_key)(const struct splay_node *node, const void *key);
};

splay_tree

struct splay_tree {
    struct splay_node            *root;
    const struct splay_node_ops  *ops;
};

Functions

splay_init_node

void splay_init_node(struct splay_node *n);

splay_tree_empty

bool splay_tree_empty(const struct splay_tree *tree);

splay_tree_init

void splay_tree_init(struct splay_tree *tree, const struct splay_node_ops *ops);

splay

void splay(struct splay_tree *tree, struct splay_node *node);

splay_insert

void splay_insert(struct splay_tree *tree, struct splay_node *node);

splay_remove

void splay_remove(struct splay_tree *tree, struct splay_node *node);

splay_find

struct splay_node * splay_find(struct splay_tree *tree, const void *key);

splay_first

struct splay_node * splay_first(const struct splay_tree *tree);

splay_last

struct splay_node * splay_last(const struct splay_tree *tree);

splay_next

struct splay_node * splay_next(const struct splay_node *node);

splay_prev

struct splay_node * splay_prev(const struct splay_node *node);

Macros

SPLAY_NODE_INIT

#define SPLAY_NODE_INIT \
    (struct splay_node) { \
        .left = NULL, .right = NULL, .parent = NULL \
    }

splay_entry

#define splay_entry(ptr, type, member) container_of(ptr, type, member)

splay_for_each

#define splay_for_each(pos, tree) \
    for ((pos) = splay_first(tree); (pos); (pos) = splay_next(pos))

splay_for_each_safe

#define splay_for_each_safe(pos, n, tree) \
    for ((pos) = splay_first(tree), (n) = (pos) ? splay_next(pos) : NULL; \
         (pos); (pos) = (n), (n) = (pos) ? splay_next(pos) : NULL)

splay_for_each_entry

#define splay_for_each_entry(pos, type, member, tree) \
    for (pos = splay_entry(splay_first(tree), type, member); \
         (pos) != NULL && &pos->member != NULL; \
         pos = splay_entry(splay_next(&pos->member), type, member))

splay_for_each_entry_safe

#define splay_for_each_entry_safe(pos, tmp, type, member, tree) \
    for (pos = splay_entry(splay_first(tree), type, member), \
        tmp = (pos) ? splay_entry(splay_next(&pos->member), type, member) \
                    : NULL; \
         (pos) != NULL && &pos->member != NULL; pos = tmp, \
        tmp = (pos) ? splay_entry(splay_next(&pos->member), type, member) \
                    : NULL)

splay_for_each_reverse

#define splay_for_each_reverse(pos, tree) \
    for ((pos) = splay_last(tree); (pos); (pos) = splay_prev(pos))

splay_for_each_safe_reverse

#define splay_for_each_safe_reverse(pos, n, tree) \
    for ((pos) = splay_last(tree), (n) = (pos) ? splay_prev(pos) : NULL; \
         (pos); (pos) = (n), (n) = (pos) ? splay_prev(pos) : NULL)

splay_for_each_entry_reverse

#define splay_for_each_entry_reverse(pos, type, member, tree) \
    for (pos = splay_entry(splay_last(tree), type, member); \
         (pos) != NULL && &pos->member != NULL; \
         pos = splay_entry(splay_prev(&pos->member), type, member))

splay_for_each_entry_safe_reverse

#define splay_for_each_entry_safe_reverse(pos, tmp, type, member, tree) \
    for (pos = splay_entry(splay_last(tree), type, member), \
        tmp = (pos) ? splay_entry(splay_prev(&pos->member), type, member) \
                    : NULL; \
         (pos) != NULL && &pos->member != NULL; pos = tmp, \
        tmp = (pos) ? splay_entry(splay_prev(&pos->member), type, member) \
                    : NULL)

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