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Diffstat (limited to '')
-rw-r--r-- | wsrep-lib/include/wsrep/transaction_id.hpp | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/wsrep-lib/include/wsrep/transaction_id.hpp b/wsrep-lib/include/wsrep/transaction_id.hpp new file mode 100644 index 00000000..f5fb5dbc --- /dev/null +++ b/wsrep-lib/include/wsrep/transaction_id.hpp @@ -0,0 +1,63 @@ +/* + * Copyright (C) 2018 Codership Oy <info@codership.com> + * + * This file is part of wsrep-lib. + * + * Wsrep-lib is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or + * (at your option) any later version. + * + * Wsrep-lib 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 wsrep-lib. If not, see <https://www.gnu.org/licenses/>. + */ + +#ifndef WSREP_TRANSACTION_ID_HPP +#define WSREP_TRANSACTION_ID_HPP + +#include <iostream> +#include <limits> + +namespace wsrep +{ + class transaction_id + { + public: + typedef unsigned long long type; + + + transaction_id() + : id_(std::numeric_limits<type>::max()) + { } + + template <typename I> + explicit transaction_id(I id) + : id_(static_cast<type>(id)) + { } + type get() const { return id_; } + static transaction_id undefined() { return transaction_id(-1); } + bool is_undefined() const { return (id_ == type(-1)); } + bool operator<(const transaction_id& other) const + { + return (id_ < other.id_); + } + bool operator==(const transaction_id& other) const + { return (id_ == other.id_); } + bool operator!=(const transaction_id& other) const + { return (id_ != other.id_); } + private: + type id_; + }; + + static inline std::ostream& operator<<(std::ostream& os, transaction_id id) + { + return (os << id.get()); + } +} + +#endif // WSREP_TRANSACTION_ID_HPP |