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// Copyright (C) 2020 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
#ifndef UNLOCK_GUARD_H
#define UNLOCK_GUARD_H
#include <boost/noncopyable.hpp>
namespace isc {
namespace util {
/// @brief Unlock Guard.
///
/// Acts as a reverse std::lock_guard.
///
/// @tparam Mutex a mutex object.
template<typename Mutex>
class UnlockGuard : public boost::noncopyable {
public:
/// @brief Constructor.
///
/// Unlock mutex object on constructor.
///
/// @param lock the mutex used for unlocking and locking.
explicit UnlockGuard(Mutex& lock) : lock_(lock) {
lock_.unlock();
}
/// @brief Destructor.
///
/// Lock mutex object on destructor.
~UnlockGuard() {
lock_.lock();
}
private:
/// @brief The mutex object.
Mutex& lock_;
};
} // namespace util
} // namespace isc
#endif // UNLOCK_GUARD_H
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