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scylladb/sstables/filter.hh

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/*
* Copyright (C) 2015 ScyllaDB
*
* Modified by ScyllaDB
*/
/*
* This file is part of Scylla.
*
* Scylla is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Scylla 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <cstdint>
namespace sstables {
class sstable;
}
class filter_tracker {
uint64_t false_positive = 0;
uint64_t true_positive = 0;
uint64_t last_false_positive = 0;
uint64_t last_true_positive = 0;
public:
void add_false_positive() {
false_positive++;
}
void add_true_positive() {
true_positive++;
}
friend class sstables::sstable;
};