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/*
* 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
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