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e9802348b5
Replace std::vector<inet_address> with a small_vector of size 3 for replica sets (reflecting the common case of local reads, and the somewhat less common case of single-datacenter writes). Vectors used to describe topology changes are of size 1, reflecting that up to one node is usually involved with topology changes. At those counts and below we save an allocation; above those counts everything still works, but small_vector allocates like std::vector. In a few places we need to convert between std::vector and the new types, but these are all out of the hot paths (or are in a hot path, but behind a cache).
30 lines
967 B
C++
30 lines
967 B
C++
/*
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* Copyright (C) 2021 ScyllaDB
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*/
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/*
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* This file is part of Scylla.
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*
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* Scylla is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Scylla is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include "gms/inet_address.hh"
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#include "utils/small_vector.hh"
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using inet_address_vector_replica_set = utils::small_vector<gms::inet_address, 3>;
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using inet_address_vector_topology_change = utils::small_vector<gms::inet_address, 1>;
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