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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/**
* Copyright (c) 2013-2014 Regents of the University of California.
*
* This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
*
* ndn-cxx library is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later version.
*
* ndn-cxx library 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 Lesser General Public License for more details.
*
* You should have received copies of the GNU General Public License and GNU Lesser
* General Public License along with ndn-cxx, e.g., in COPYING.md file. If not, see
* <http://www.gnu.org/licenses/>.
*
* See AUTHORS.md for complete list of ndn-cxx authors and contributors.
*/
#ifndef NDN_TIME_CUSTOM_CLOCK_HPP
#define NDN_TIME_CUSTOM_CLOCK_HPP
#include "time.hpp"
namespace ndn {
namespace time {
/**
* \brief Class implementing custom system or steady clock behavior
*
* Instance of specialization of this class may be passed to setCustomClocks() free function
* in order to change global behavior of system or steady clock.
*/
template<typename BaseClock>
class CustomClock
{
public:
virtual ~CustomClock()
{
}
virtual typename BaseClock::time_point
getNow() const = 0;
virtual std::string
getSince() const = 0;
virtual boost::posix_time::time_duration
toPosixDuration(const typename BaseClock::duration& duration) const = 0;
};
typedef CustomClock<system_clock> CustomSystemClock;
typedef CustomClock<steady_clock> CustomSteadyClock;
/**
* \brief Set custom system and steady clocks
*
* When \p steadyClock or \p systemClock set to nullptr, the default implementation
* of the corresponding clock will be used
*/
void
setCustomClocks(shared_ptr<CustomSteadyClock> steadyClock = nullptr,
shared_ptr<CustomSystemClock> systemClock = nullptr);
} // namespace time
} // namespace ndn
#endif // NDN_TIME_CUSTOM_CLOCK_HPP