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64 lines
1.8 KiB
C++
64 lines
1.8 KiB
C++
/*
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* Copyright (C) 2018 Codership Oy <info@codership.com>
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*
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* This file is part of wsrep-lib.
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*
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* Wsrep-lib is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* Wsrep-lib 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 wsrep-lib. If not, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef WSREP_TRANSACTION_ID_HPP
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#define WSREP_TRANSACTION_ID_HPP
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#include <iostream>
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#include <limits>
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namespace wsrep
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{
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class transaction_id
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{
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public:
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typedef unsigned long long type;
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transaction_id()
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: id_(std::numeric_limits<type>::max())
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{ }
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template <typename I>
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explicit transaction_id(I id)
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: id_(static_cast<type>(id))
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{ }
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type get() const { return id_; }
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static transaction_id undefined() { return transaction_id(-1); }
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bool is_undefined() const { return (id_ == type(-1)); }
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bool operator<(const transaction_id& other) const
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{
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return (id_ < other.id_);
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}
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bool operator==(const transaction_id& other) const
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{ return (id_ == other.id_); }
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bool operator!=(const transaction_id& other) const
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{ return (id_ != other.id_); }
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private:
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type id_;
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};
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static inline std::ostream& operator<<(std::ostream& os, transaction_id id)
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{
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return (os << id.get());
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}
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}
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#endif // WSREP_TRANSACTION_ID_HPP
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