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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
{
/** This class is used to collect timing information for a
* particular task. */
class TimedTask
{
public:
/**@name Constructors/Destructors */
//@{
/** Default constructor. */
TimedTask()
:
total_cputime_(0.),
total_systime_(0.),
total_walltime_(0.),
start_called_(false),
end_called_(true)
{}
/** Default destructor */
~TimedTask()
{}
//@}
/** Method for resetting time to zero. */
void Reset()
{
total_cputime_ = 0.;
total_systime_ = 0.;
total_walltime_ = 0.;
start_called_ = false;
end_called_ = true;
}
/** Method that is called before execution of the task. */
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();
}
/** Method that is called after execution of the task. */
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_;
}
/** Method that is called after execution of the task for which
* timing might have been started. This only updates the timing
* if the timing has indeed been conducted. This is useful to
* stop timing after catching exceptions. */
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_);
}
/** Method returning total CPU time spend for task so far. */
Number TotalCpuTime() const
{
DBG_ASSERT(end_called_);
return total_cputime_;
}
/** Method returning total system time spend for task so far. */
Number TotalSysTime() const
{
DBG_ASSERT(end_called_);
return total_systime_;
}
/** Method returning total wall clock time spend for task so far. */
Number TotalWallclockTime() const
{
DBG_ASSERT(end_called_);
return total_walltime_;
}
private:
/**@name Default Compiler Generated Methods (Hidden to avoid
* implicit creation/calling). These methods are not
* implemented and we do not want the compiler to implement them
* for us, so we declare them private and do not define
* them. This ensures that they will not be implicitly
* created/called. */
//@{
/** Copy Constructor */
TimedTask(const TimedTask&);
/** Overloaded Equals Operator */
void operator=(const TimedTask&);
//@}
/** CPU time at beginning of task. */
Number start_cputime_;
/** Total CPU time for task measured so far. */
Number total_cputime_;
/** System time at beginning of task. */
Number start_systime_;
/** Total system time for task measured so far. */
Number total_systime_;
/** Wall clock time at beginning of task. */
Number start_walltime_;
/** Total wall clock time for task measured so far. */
Number total_walltime_;
/** @name fields for debugging */
//@{
bool start_called_;
bool end_called_;
//@}
};
} // namespace Ipopt
#endif
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