cl_Timer.hpp

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/*
 * BELFEM -- The Berkeley Lab Finite Element Framework
 * Copyright (c) 2026, The Regents of the University of California,
 * through Lawrence Berkeley National Laboratory (subject to receipt of any required
 * approvals from the U.S. Dept. of Energy).  All rights reserved.
 *
 * Developers: Christian Messe, Gregory Giard
 *
 * See the top-level LICENSE file for the complete license and disclaimer.
 */
 
#ifndef BELFEM_CL_TIMER_HPP
#define BELFEM_CL_TIMER_HPP
 
#include <chrono>
 
namespace belfem
{
//------------------------------------------------------------------------------

    class Timer
    {
        std::chrono::time_point<std::chrono::high_resolution_clock> mStart;
//------------------------------------------------------------------------------
    public:
//------------------------------------------------------------------------------
 
        inline Timer() : mStart( std::chrono::high_resolution_clock::now() ) {}
 
//------------------------------------------------------------------------------
 
        ~Timer() = default;
 
//------------------------------------------------------------------------------
 
        inline uint64_t
        stop()
        {
            return ( unsigned int )
                   ( std::chrono::duration_cast<std::chrono::milliseconds>
                   ( std::chrono::high_resolution_clock::now() - mStart ).count() );
        }
 
//------------------------------------------------------------------------------
 
        inline uint64_t
        next()
        {
            unsigned int aTime = this->stop();
            mStart = std::chrono::high_resolution_clock::now();
            return aTime ;
        }
 
//------------------------------------------------------------------------------
 
        inline void
        reset()
        {
            mStart = std::chrono::high_resolution_clock::now();
        }
 
//------------------------------------------------------------------------------
    };
 
//------------------------------------------------------------------------------
}
#endif //BELFEM_CL_TIMER_HPP