mirror of
https://github.com/codership/wsrep-lib.git
synced 2025-05-12 12:21:27 +03:00
77 lines
1.7 KiB
C++
77 lines
1.7 KiB
C++
/*
|
|
* 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_LOCK_HPP
|
|
#define WSREP_LOCK_HPP
|
|
|
|
#include "mutex.hpp"
|
|
|
|
#include <cassert>
|
|
|
|
namespace wsrep
|
|
{
|
|
template <class M>
|
|
class unique_lock
|
|
{
|
|
public:
|
|
unique_lock(M& mutex)
|
|
: mutex_(mutex)
|
|
, locked_(false)
|
|
{
|
|
mutex_.lock();
|
|
locked_ = true;
|
|
}
|
|
~unique_lock()
|
|
{
|
|
if (locked_)
|
|
{
|
|
unlock();
|
|
}
|
|
}
|
|
|
|
void lock()
|
|
{
|
|
mutex_.lock();
|
|
assert(locked_ == false);
|
|
locked_ = true;
|
|
}
|
|
|
|
void unlock()
|
|
{
|
|
assert(locked_);
|
|
locked_ = false;
|
|
mutex_.unlock();
|
|
}
|
|
|
|
bool owns_lock() const
|
|
{
|
|
return locked_;
|
|
}
|
|
|
|
M& mutex() { return mutex_; }
|
|
private:
|
|
unique_lock(const unique_lock&);
|
|
unique_lock& operator=(const unique_lock&);
|
|
M& mutex_;
|
|
bool locked_;
|
|
};
|
|
}
|
|
|
|
#endif // WSREP_LOCK_HPP
|