PerfMon

Section: C Library Functions (3) Updated: Thu Apr 7 2011 Local index Up

NAME

PerfMon -

SYNOPSIS

Public Member Functions

PerfMon (std::string id, const unsigned int v=1, const unsigned int pid=0)

~PerfMon ()

void reset ()

double print (std::string msg='NULL')

Private Attributes

const std::string id_string

struct timeval the_time_start

struct timeval the_time_stop

const unsigned int verbose

const unsigned int proc_id

float rtime

float ptime

float mflops

long long int flpins

Detailed Description

Definition at line 42 of file perfmon.h.

Constructor & Destructor Documentation

PerfMon::PerfMon (std::stringid, const unsigned intv = 1, const unsigned intpid = 0) [inline]

Definition at line 135 of file perfmon.h.

References reset().

                                          :
  id_string(id),
  verbose(v),
  proc_id(pid)
{
  reset ();
}

PerfMon::~PerfMon () [inline]

Definition at line 148 of file perfmon.h.

References print().

{
  print ();
}

Member Function Documentation

double PerfMon::print (std::stringmsg = 'NULL') [inline]

Definition at line 86 of file perfmon.h.

References flpins, id_string, mflops, proc_id, ptime, rtime, the_time_start, the_time_stop, and verbose.

Referenced by ~PerfMon().

{  
  gettimeofday (&the_time_stop, NULL);
  
#ifdef HAVE_PAPI_H
  Papi::PAPI_flops (&rtime, &ptime, &flpins, &mflops);
#endif

  const double elapsed_time = ((double) (the_time_stop.tv_sec - the_time_start.tv_sec)) +
                              ((double) (the_time_stop.tv_usec - the_time_start.tv_usec))/1000000.;

  if (verbose)
    {
      
      if (proc_id == 0)
        {
          if (msg == 'NULL')
            std::cout << ' ' << id_string
                      << ': elapsed time: '
                      << elapsed_time << ' (sec)'
                      << std::endl;
          else
            std::cout << ' ' << msg
                      << ': elapsed time: '
                      << elapsed_time << ' (sec)'
                      << std::endl;
          
#ifdef HAVE_PAPI_H
          if (msg == 'NULL')
            std::cout << ' ' << id_string
                      << ': mflops: '
                      << mflops
                      << std::endl;
          else
            std::cout << ' ' << msg
                      << ': mflops: '
                      << mflops
                      << std::endl;
      
#endif

        }
    }
  
  return elapsed_time;
}

void PerfMon::reset () [inline]

Definition at line 73 of file perfmon.h.

References flpins, mflops, ptime, rtime, and the_time_start.

Referenced by PerfMon().

{
  gettimeofday (&the_time_start, NULL);

#ifdef HAVE_PAPI_H
  Papi::PAPI_flops (&rtime, &ptime, &flpins, &mflops);
#endif  
}