perf_estimator.h

/*******************************************************************************
 * Copyright 2018, 2020 MINRES Technologies GmbH
 *
 * 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 _SCC_PERFORMANCETRACER_H_
#define _SCC_PERFORMANCETRACER_H_
 
#include <boost/date_time/posix_time/posix_time.hpp>
#include <systemc>
#include <tuple>

namespace scc {
class perf_estimator : public sc_core::sc_module {
    struct time_stamp {
        boost::posix_time::ptime wall_clock_stamp;
        double proc_clock_stamp;
        time_stamp()
        : wall_clock_stamp(boost::posix_time::microsec_clock::universal_time())
        , proc_clock_stamp(get_cpu_time()) {}
        time_stamp& operator=(const time_stamp& o) {
            wall_clock_stamp = o.wall_clock_stamp;
            proc_clock_stamp = o.proc_clock_stamp;
            return *this;
        }
        void set() {
            wall_clock_stamp = boost::posix_time::microsec_clock::universal_time();
            proc_clock_stamp = get_cpu_time();
        }
 
    private:
        static double get_cpu_time();
    };
 
public:
    perf_estimator()
    : perf_estimator(sc_core::SC_ZERO_TIME) {}

    perf_estimator(sc_core::sc_time heart_beat)
    : perf_estimator(sc_core::sc_gen_unique_name("$$$perf_estimator$$$", true), heart_beat) {}

    virtual ~perf_estimator();
    void set_cycle_time(sc_core::sc_time cycle_period) { this->cycle_period = cycle_period; };
 
protected:
    perf_estimator(const sc_core::sc_module_name& nm, sc_core::sc_time heart_beat);
    void end_of_elaboration() override;
    void start_of_simulation() override;
    void end_of_simulation() override;
    time_stamp soc;
    time_stamp eoe;
    time_stamp sos;
    time_stamp eos;
    sc_core::sc_time beat_delay, cycle_period;
    void beat();
    long get_memory();
    long max_memory{0};
};
 
} /* namespace scc */ // end of scc-sysc
#endif    /* _SCC_PERFORMANCETRACER_H_ */