/*******************************************************************************
* ALMA - Atacama Large Millimiter Array
* Copyright (c) European Southern Observatory, 2011
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
*
* "@(#) $Id: acstimeProfiler.cpp,v 1.13 2011/10/28 15:12:04 hsommer Exp $"
*/
//------------------------------------------------------------------------------
#include "acstimeProfiler.h"
#include <acsutilPorts.h>
#include "acsutilTimeStamp.h"
//------------------------------------------------------------------------------
Profiler::Profiler()
{
    reset();
}
//------------------------------------------------------------------------------
void
Profiler::reset()
{
    lastStart_m=0;
    totalTime=0;
    totalNumStarts_m=0;
    //pick a ridiculously large value!
    minDuration=0xFFFFFFFFULL;
    maxDuration=0;
    extraDescrip_m = "";
}
//------------------------------------------------------------------------------
void
Profiler::start()
{
    //double-check this to make sure they don't call start twice without a stop!
    if (lastStart_m==0)
	{
	totalNumStarts_m++;
	}
    else
	{
	std::cerr << "Looks like Profiler::start was called twice in a row without invoking Profiler::stop" << std::endl;
	}
    //get the current time.
    lastStart_m=getTimeStamp();
}
//------------------------------------------------------------------------------
ACS::Time
Profiler::stop()
{
    //save the current time
    if (lastStart_m==0)
	{
	std::cerr << "Looks like Profiler::stop was called twice in a row without invoking Profiler::start" << std::endl;
	return 0ULL;
	}
    ACS::Time timeDiff = getTimeStamp() - lastStart_m;

    if (timeDiff>maxDuration)
	{
	maxDuration=timeDiff;
	}

    if (timeDiff<minDuration)
	{
	minDuration=timeDiff;
	}

    //0 last value
    lastStart_m=0;

    //add this to the total time
    totalTime += timeDiff;
    
    return timeDiff;
}
//------------------------------------------------------------------------------
void
Profiler::fullDescription(const char* msg)
{
    //developer forgot to invoke stop!
    if (lastStart_m!=0)
	{
	//just do it for them
	stop();
	}
    
    //if there were no start invocations just bail out
    if (totalNumStarts_m==0)
	{
	std::cerr << "ACS PROFILER: No start invocations - " << msg << std::endl; 
	return;
	}

    long double averageTime = totalTime / totalNumStarts_m;

    std::cout << "#ACS PROFILER# msg=" << msg;
    std::cout << ", avg=" << averageTime / 10000.0; 
    std::cout << ", runs=" << totalNumStarts_m; 
    std::cout << ", mindur=" << minDuration / 10000.0;
    std::cout << ", maxdur=" << maxDuration / 10000.0;
    std::cout << ", cpu=Unknown";
    std::cout << ", mem=Unknown";

    acstime::Epoch currEpoch;
    currEpoch.value = getTimeStamp();
    epochHelper_m.value(currEpoch);

    std::cout << ", date=" << (epochHelper_m.toString(acstime::TSArray, "", 0, 0)).c_str();
    std::cout << ", ip=" << ACSPorts::getIP();
    std::cout << ", lang=cpp";
    std::cout << ", units=ms";
    std::cout << extraDescrip_m;
    std::cout << std::endl;
}
//------------------------------------------------------------------------------
void
Profiler::addData(const char* key, const char* value)
{
    extraDescrip_m = extraDescrip_m + ", " + key + "=" + value;
}