43 lines
1.2 KiB
C++
43 lines
1.2 KiB
C++
/*
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* HighContentionAllocator.h
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*
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* This source file is part of the FoundationDB open source project
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*
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* Copyright 2013-2022 Apple Inc. and the FoundationDB project authors
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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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#ifndef FDB_FLOW_HIGH_CONTENTION_ALLOCATOR_H
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#define FDB_FLOW_HIGH_CONTENTION_ALLOCATOR_H
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#pragma once
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#include "Subspace.h"
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namespace FDB {
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class HighContentionAllocator {
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public:
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HighContentionAllocator(Subspace subspace) : counters(subspace.get(0)), recent(subspace.get(1)) {}
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Future<Standalone<StringRef>> allocate(Reference<Transaction> const& tr) const;
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static int64_t windowSize(int64_t start);
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private:
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Subspace counters;
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Subspace recent;
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};
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} // namespace FDB
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#endif
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