f45c31d8
 Peter M. Groen
MOve headers to i...
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/* ****************************************************************************
* Copyright 2019 Open Systems Development BV *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the "Software"), *
* to deal in the Software without restriction, including without limitation *
* the rights to use, copy, modify, merge, publish, distribute, sublicense, *
* and/or sell copies of the Software, and to permit persons to whom the *
* Software is furnished to do so, subject to the following conditions: *
* *
* The above copyright notice and this permission notice shall be included in *
* all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR *
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, *
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL *
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER *
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING *
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER *
* DEALINGS IN THE SOFTWARE. *
* ***************************************************************************/
#ifndef OSDEV_COMPONENTS_MQTT_SCOPEGUARD_H
#define OSDEV_COMPONENTS_MQTT_SCOPEGUARD_H
// std
#include <functional>
#include "macrodefs.h"
#include "utils.h"
#define OSDEV_COMPONENTS_SCOPEGUARD(variableName, ...) \
osdev::components::mqtt::ScopeGuard OSDEV_COMPONENTS_COMBINE(Scope__Guard__##variableName##__, __LINE__)(__VA_ARGS__); \
osdev::components::mqtt::apply_unused_parameters(OSDEV_COMPONENTS_COMBINE(Scope__Guard__##variableName##__, __LINE__));
namespace osdev {
namespace components {
namespace mqtt {
using CleanUpFunction = std::function<void() noexcept>;
/**
* @brief Ensures that a cleanup function is called at the end of the current scope.
*/
class ScopeGuard
{
public:
/**
* @brief Constructs an empty scopeguard.
* The scopeguard can be set by moving another ScopeGuard into this one.
*/
ScopeGuard();
/**
* @brief Constructs a RAII instance that will call cleanupFunc in it's destructor.
* @param cleanupFunc The cleanup function to call at the end of the current scope.
* This cleanup function must not throw exceptions. If it does, the behavior is undefined.
*/
ScopeGuard(const CleanUpFunction& cleanupFunc);
// Movable, not copyable
ScopeGuard(const ScopeGuard&) = delete;
ScopeGuard& operator=(const ScopeGuard&) = delete;
ScopeGuard(ScopeGuard&&) = default;
ScopeGuard& operator=(ScopeGuard&&) = default;
~ScopeGuard() noexcept;
private:
CleanUpFunction m_cleanupFunc;
};
} // End namespace mqtt
} // End namespace components
} // End namespace osdev
#endif // OSDEV_COMPONENTS_MQTT_SCOPEGUARD_H
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