time_meas.c

/*******************************************************************************
    OpenAirInterface 
    Copyright(c) 1999 - 2014 Eurecom

    OpenAirInterface is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.


    OpenAirInterface 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 General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with OpenAirInterface.The full GNU General Public License is 
   included in this distribution in the file called "COPYING". If not, 
   see <http://www.gnu.org/licenses/>.

  Contact Information
  OpenAirInterface Admin: openair_admin@eurecom.fr
  OpenAirInterface Tech : openair_tech@eurecom.fr
  OpenAirInterface Dev  : openair4g-devel@eurecom.fr
  
  Address      : Eurecom, Campus SophiaTech, 450 Route des Chappes, CS 50193 - 06904 Biot Sophia Antipolis cedex, FRANCE

*******************************************************************************/
#include <stdio.h>
#include "time_meas.h"
#include <math.h>
#include <unistd.h>

// global var for openair performance profiler 
int opp_enabled = 0;
/*
  double get_cpu_freq_GHz(void) {
  
  time_stats_t ts;
  reset_meas(&ts);
  start_meas(&ts);
  sleep(1);
  stop_meas(&ts);
  return (double)ts.diff/1000000000;
  }*/

void print_meas(time_stats_t *ts, const char* name, time_stats_t * total_exec_time, time_stats_t * sf_exec_time){

  if (opp_enabled) {
    
    static int first_time = 0;
    static double cpu_freq_GHz = 0.0;
    
    if (cpu_freq_GHz == 0.0)
      cpu_freq_GHz = get_cpu_freq_GHz();
    
    if (first_time == 0) {
    first_time=1;
      fprintf(stderr, "%25s  %25s  %25s  %20s %15s %6f\n","Name","Total","Average/Frame","Trials","CPU_F_GHz", cpu_freq_GHz);
    }
    if (ts->trials>0) {
      //printf("%20s: total: %10.3f ms, average: %10.3f us (%10d trials)\n", name, ts->diff/cpu_freq_GHz/1000000.0, ts->diff/ts->trials/cpu_freq_GHz/1000.0, ts->trials);
     
      fprintf(stderr, "%25s:  %15.3f ms (%5.2f%%); %15.3f us (%5.2f%%); %15d;\n", 
	      name, 
	      (ts->diff/cpu_freq_GHz/1000000.0), 
	      ((ts->diff/cpu_freq_GHz/1000000.0)/(total_exec_time->diff/cpu_freq_GHz/1000000.0))*100,  // percentage 
	      (ts->diff/ts->trials/cpu_freq_GHz/1000.0), 
	      ((ts->diff/ts->trials/cpu_freq_GHz/1000.0)/(sf_exec_time->diff/sf_exec_time->trials/cpu_freq_GHz/1000.0))*100,  // percentage 
	      ts->trials);
    }
  }
  
}

double get_time_meas_us(time_stats_t *ts){

  static double cpu_freq_GHz = 0.0;
    
  if (cpu_freq_GHz == 0.0)
    cpu_freq_GHz = get_cpu_freq_GHz();
   
  if (ts->trials>0) 
    return  (ts->diff/ts->trials/cpu_freq_GHz/1000.0);
  return 0;
}