stop_callback.hpp

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/*
 * Copyright (C) 1998-2018 ALPS Collaboration. See COPYRIGHT.TXT
 * All rights reserved. Use is subject to license terms. See LICENSE.TXT
 * For use in publications, see ACKNOWLEDGE.TXT
 */

#ifndef ALPS_CALLBACK_HPP
#define ALPS_CALLBACK_HPP

#include <alps/config.hpp>
#include <alps/utilities/signal.hpp>

#include <alps/mc/check_schedule.hpp>

#ifdef ALPS_HAVE_MPI
#include <boost/optional.hpp>
# include "alps/utilities/mpi.hpp"
#endif

namespace alps {

        class stop_callback {
                private:
                    typedef detail::posix_wall_clock clock_type;
                    typedef clock_type::time_duration_type time_duration_type;
                    typedef clock_type::time_point_type time_point_type;
                
                public:

                    stop_callback(std::size_t timelimit);
#ifdef ALPS_HAVE_MPI

                    stop_callback(alps::mpi::communicator const & cm, std::size_t timelimit);
#endif
                    bool operator()() const;
                private:
                    const time_duration_type limit;
                    alps::signal signals;
                    const time_point_type start;
#ifdef ALPS_HAVE_MPI
                    boost::optional<alps::mpi::communicator> comm;
#endif
        };


        class simple_time_callback {
                private:
                    typedef detail::posix_wall_clock clock_type;
                    typedef clock_type::time_duration_type time_duration_type;
                    typedef clock_type::time_point_type time_point_type;
                
                public:

                    simple_time_callback(std::size_t timelimit);

                    bool operator()() const;
                private:
                    const time_duration_type limit;
                    const time_point_type start;
        };
}

#endif