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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 09:35:11 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 09:35:11 +0000 |
commit | da76459dc21b5af2449af2d36eb95226cb186ce2 (patch) | |
tree | 542ebb3c1e796fac2742495b8437331727bbbfa0 /src/ebmbtree.c | |
parent | Initial commit. (diff) | |
download | haproxy-da76459dc21b5af2449af2d36eb95226cb186ce2.tar.xz haproxy-da76459dc21b5af2449af2d36eb95226cb186ce2.zip |
Adding upstream version 2.6.12.upstream/2.6.12upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/ebmbtree.c | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/src/ebmbtree.c b/src/ebmbtree.c new file mode 100644 index 0000000..a3de9a1 --- /dev/null +++ b/src/ebmbtree.c @@ -0,0 +1,77 @@ +/* + * Elastic Binary Trees - exported functions for Multi-Byte data nodes. + * Version 6.0.6 + * (C) 2002-2011 - Willy Tarreau <w@1wt.eu> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation, version 2.1 + * exclusively. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/* Consult ebmbtree.h for more details about those functions */ + +#include <import/ebmbtree.h> + +/* Find the first occurrence of a key of <len> bytes in the tree <root>. + * If none can be found, return NULL. + */ +struct ebmb_node * +ebmb_lookup(struct eb_root *root, const void *x, unsigned int len) +{ + return __ebmb_lookup(root, x, len); +} + +/* Insert ebmb_node <new> into subtree starting at node root <root>. + * Only new->key needs be set with the key. The ebmb_node is returned. + * If root->b[EB_RGHT]==1, the tree may only contain unique keys. The + * len is specified in bytes. + */ +struct ebmb_node * +ebmb_insert(struct eb_root *root, struct ebmb_node *new, unsigned int len) +{ + return __ebmb_insert(root, new, len); +} + +/* Find the first occurrence of the longest prefix matching a key <x> in the + * tree <root>. It's the caller's responsibility to ensure that key <x> is at + * least as long as the keys in the tree. If none can be found, return NULL. + */ +struct ebmb_node * +ebmb_lookup_longest(struct eb_root *root, const void *x) +{ + return __ebmb_lookup_longest(root, x); +} + +/* Find the first occurrence of a prefix matching a key <x> of <pfx> BITS in the + * tree <root>. If none can be found, return NULL. + */ +struct ebmb_node * +ebmb_lookup_prefix(struct eb_root *root, const void *x, unsigned int pfx) +{ + return __ebmb_lookup_prefix(root, x, pfx); +} + +/* Insert ebmb_node <new> into a prefix subtree starting at node root <root>. + * Only new->key and new->pfx need be set with the key and its prefix length. + * Note that bits between <pfx> and <len> are theoretically ignored and should be + * zero, as it is not certain yet that they will always be ignored everywhere + * (eg in bit compare functions). + * The ebmb_node is returned. + * If root->b[EB_RGHT]==1, the tree may only contain unique keys. The + * len is specified in bytes. + */ +struct ebmb_node * +ebmb_insert_prefix(struct eb_root *root, struct ebmb_node *new, unsigned int len) +{ + return __ebmb_insert_prefix(root, new, len); +} |