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/*
* Copyright (c) 2011-2015 Richard Braun.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*
* Upstream site with license notes :
* http://git.sceen.net/rbraun/librbraun.git/
*/
#ifndef _RDXTREE_I_H
#define _RDXTREE_I_H
/*
* Radix tree.
*/
struct rdxtree {
unsigned int height;
void *root;
};
/*
* Radix tree iterator.
*
* The node member refers to the node containing the current pointer, if any.
* The key member refers to the current pointer, and is valid if and only if
* rdxtree_walk() has been called at least once on the iterator.
*/
struct rdxtree_iter {
void *node;
rdxtree_key_t key;
};
/*
* Initialize an iterator.
*/
static inline void
rdxtree_iter_init(struct rdxtree_iter *iter)
{
iter->node = NULL;
iter->key = (rdxtree_key_t)-1;
}
int rdxtree_insert_common(struct rdxtree *tree, rdxtree_key_t key,
void *ptr, void ***slotp);
int rdxtree_insert_alloc_common(struct rdxtree *tree, void *ptr,
rdxtree_key_t *keyp, void ***slotp);
void * rdxtree_lookup_common(const struct rdxtree *tree, rdxtree_key_t key,
int get_slot);
void * rdxtree_walk(struct rdxtree *tree, struct rdxtree_iter *iter);
#endif /* _RDXTREE_I_H */
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