IpTimedTask.hpp

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// Copyright (C) 2006, 2009 International Business Machines and others.
// All Rights Reserved.
// This code is published under the Eclipse Public License.
//
// $Id: IpTimedTask.hpp 1861 2010-12-21 21:34:47Z andreasw $
//
// Authors:  Andreas Waechter               IBM    2005-09-19

#ifndef __IPTIMEDTASK_HPP__
#define __IPTIMEDTASK_HPP__

#include "IpUtils.hpp"

namespace Ipopt
{
  class TimedTask
  {
  public:
    TimedTask()
        :
        total_cputime_(0.),
        total_systime_(0.),
        total_walltime_(0.),
        start_called_(false),
        end_called_(true)
    {}

    ~TimedTask()
    {}

    void Reset()
    {
      total_cputime_ = 0.;
      total_systime_ = 0.;
      total_walltime_ = 0.;
      start_called_ = false;
      end_called_ = true;
    }

    void Start()
    {
      DBG_ASSERT(end_called_);
      DBG_ASSERT(!start_called_);
      end_called_ = false;
      start_called_ = true;
      start_cputime_ = CpuTime();
      start_systime_ = SysTime();
      start_walltime_ = WallclockTime();
    }

    void End()
    {
      DBG_ASSERT(!end_called_);
      DBG_ASSERT(start_called_);
      end_called_ = true;
      start_called_ = false;
      total_cputime_ += CpuTime() - start_cputime_;
      total_systime_ += SysTime() - start_systime_;
      total_walltime_ += WallclockTime() - start_walltime_;
    }

    void EndIfStarted()
    {
      if (start_called_) {
        end_called_ = true;
        start_called_ = false;
        total_cputime_ += CpuTime() - start_cputime_;
        total_systime_ += SysTime() - start_systime_;
        total_walltime_ += WallclockTime() - start_walltime_;
      }
      DBG_ASSERT(end_called_);
    }

    Number TotalCpuTime() const
    {
      DBG_ASSERT(end_called_);
      return total_cputime_;
    }

    Number TotalSysTime() const
    {
      DBG_ASSERT(end_called_);
      return total_systime_;
    }

    Number TotalWallclockTime() const
    {
      DBG_ASSERT(end_called_);
      return total_walltime_;
    }

  private:
    TimedTask(const TimedTask&);

    void operator=(const TimedTask&);

    Number start_cputime_;
    Number total_cputime_;
    Number start_systime_;
    Number total_systime_;
    Number start_walltime_;
    Number total_walltime_;

    bool start_called_;
    bool end_called_;

  };
} // namespace Ipopt

#endif