PeriodicAction.h

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/***********************************************************************************\
* (c) Copyright 2024 CERN for the benefit of the LHCb and ATLAS collaborations      *
*                                                                                   *
* This software is distributed under the terms of the Apache version 2 licence,     *
* copied verbatim in the file "LICENSE".                                            *
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* In applying this licence, CERN does not waive the privileges and immunities       *
* granted to it by virtue of its status as an Intergovernmental Organization        *
* or submit itself to any jurisdiction.                                             *
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#pragma once
 
#include <chrono>
#include <functional>
#include <future>
#include <thread>
 
namespace Gaudi::Utils {
  class PeriodicAction {
  public:
    using clock      = std::chrono::system_clock;
    using time_point = clock::time_point;
    using callback_t = std::function<void()>;
 
    PeriodicAction( callback_t callback, std::chrono::milliseconds period_duration, bool autostart = true );
    PeriodicAction( PeriodicAction&& )            = default;
    PeriodicAction& operator=( PeriodicAction&& ) = default;
 
    ~PeriodicAction();
 
    void start();
    void stop();
 
  private:
    std::thread               m_thread;
    std::promise<void>        m_stop_thread;
    callback_t                m_callback;
    std::chrono::milliseconds m_period_duration;
  };
} // namespace Gaudi::Utils