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event.hpp
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71 lines (58 loc) · 1.46 KB
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// Copyright 2016 Open Source Robotics Foundation, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef RCLCPP__EVENT_HPP_
#define RCLCPP__EVENT_HPP_
#include <atomic>
#include <memory>
#include "rclcpp/macros.hpp"
#include "rclcpp/visibility_control.hpp"
namespace rclcpp
{
class Event
{
public:
RCLCPP_SMART_PTR_DEFINITIONS_NOT_COPYABLE(Event)
/// Default construct
/**
* Set the default value to false
*/
RCLCPP_PUBLIC
Event();
/// Set the Event state value to true
/**
* \return The state value before the call.
*/
RCLCPP_PUBLIC
bool
set();
/// Get the state value of the Event
/**
* \return the Event state value
*/
RCLCPP_PUBLIC
bool
check();
/// Get the state value of the Event and set to false
/**
* \return the Event state value
*/
RCLCPP_PUBLIC
bool
check_and_clear();
private:
RCLCPP_DISABLE_COPY(Event)
std::atomic_bool state_;
};
} // namespace rclcpp
#endif // RCLCPP__EVENT_HPP_