d9a8d6f998
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@3593 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
50 lines
1.5 KiB
C
50 lines
1.5 KiB
C
/*
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* bloomFilter.h
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*
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* Copyright 2010-2012 Yahoo! Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Author: sears
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*/
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#ifndef BLOOM_FILTER_H
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#define BLOOM_FILTER_H
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#include <stasis/common.h>
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BEGIN_C_DECLS
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typedef struct bloom_filter_t bloom_filter_t;
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/**
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@return 0 if there is not enough memory, or some other error occurred; a
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pointer to the new bloom filter otherwise.
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*/
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bloom_filter_t * bloom_filter_create(uint64_t(*hash_func_a)(const char*,int),
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uint64_t(*hash_func_b)(const char*,int),
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uint64_t num_expected_items,
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double false_positive_rate);
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void bloom_filter_destroy(bloom_filter_t*);
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void bloom_filter_insert(bloom_filter_t * bf, const char* key, int len);
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/**
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@return 1 if the value might be in the bloom filter, 0 otherwise
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*/
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int bloom_filter_lookup(bloom_filter_t * bf, const char* key, int len);
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void bloom_filter_print_stats(bloom_filter_t * bf);
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END_C_DECLS
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#endif
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