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78 lines
2.8 KiB
C
78 lines
2.8 KiB
C
/*
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* Elastic Binary Trees - exported functions for Multi-Byte data nodes.
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* Version 6.0.6
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* (C) 2002-2011 - Willy Tarreau <w@1wt.eu>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation, version 2.1
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* exclusively.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/* Consult ebmbtree.h for more details about those functions */
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#include <import/ebmbtree.h>
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/* Find the first occurrence of a key of <len> bytes in the tree <root>.
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* If none can be found, return NULL.
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*/
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struct ebmb_node *
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ebmb_lookup(struct eb_root *root, const void *x, unsigned int len)
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{
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return __ebmb_lookup(root, x, len);
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}
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/* Insert ebmb_node <new> into subtree starting at node root <root>.
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* Only new->key needs be set with the key. The ebmb_node is returned.
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* If root->b[EB_RGHT]==1, the tree may only contain unique keys. The
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* len is specified in bytes.
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*/
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struct ebmb_node *
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ebmb_insert(struct eb_root *root, struct ebmb_node *new, unsigned int len)
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{
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return __ebmb_insert(root, new, len);
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}
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/* Find the first occurrence of the longest prefix matching a key <x> in the
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* tree <root>. It's the caller's responsibility to ensure that key <x> is at
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* least as long as the keys in the tree. If none can be found, return NULL.
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*/
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struct ebmb_node *
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ebmb_lookup_longest(struct eb_root *root, const void *x)
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{
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return __ebmb_lookup_longest(root, x);
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}
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/* Find the first occurrence of a prefix matching a key <x> of <pfx> BITS in the
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* tree <root>. If none can be found, return NULL.
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*/
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struct ebmb_node *
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ebmb_lookup_prefix(struct eb_root *root, const void *x, unsigned int pfx)
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{
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return __ebmb_lookup_prefix(root, x, pfx);
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}
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/* Insert ebmb_node <new> into a prefix subtree starting at node root <root>.
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* Only new->key and new->pfx need be set with the key and its prefix length.
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* Note that bits between <pfx> and <len> are theoretically ignored and should be
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* zero, as it is not certain yet that they will always be ignored everywhere
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* (eg in bit compare functions).
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* The ebmb_node is returned.
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* If root->b[EB_RGHT]==1, the tree may only contain unique keys. The
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* len is specified in bytes.
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*/
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struct ebmb_node *
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ebmb_insert_prefix(struct eb_root *root, struct ebmb_node *new, unsigned int len)
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{
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return __ebmb_insert_prefix(root, new, len);
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}
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