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50 lines
1.1 KiB
C
50 lines
1.1 KiB
C
/*
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* Trie index for efficient trie storage
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*
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* (c) 2019 Maria Matejka <mq@jmq.cz>
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* (c) 2019 CZ.NIC z.s.p.o.
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*
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* Can be freely distributed and used under the terms of the GNU GPL.
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*/
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#include "nest/bird.h"
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/**
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* Allocate a new trie index from the given pool
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* @p: pool to allocate from
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*
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* Returns the allocated tindex structure.
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*/
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struct tindex* tindex_new(pool *p);
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#define TINDEX_CREATE (~(0ULL))
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#define TINDEX_FIND 0
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/**
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* Find an index
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* @ti: the tindex to look into
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* @bits_in: data
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* @blen: number of bits to extract from bits_in.
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* If @blen is not multiple of 64, the LSB's of the last u64 are ignored.
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* @create: TINDEX_FIND to find existing, TINDEX_CREATE to create new records,
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* every other value is for internal use
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*
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* Return value: 0 for not found; nonzero = the index
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*/
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u64 tindex_find(struct tindex *ti, const u32 *bits_in, const uint blen, const u64 create);
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/**
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* Delete an index.
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* @ti: the tindex to use
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* @idx: the index to delete
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**/
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u64 tindex_delete(struct tindex *ti, const u64 idx);
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/**
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* Dump the index. Useful for debugging.
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*/
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void tindex_dump(const struct tindex *ti);
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