/data/refman/pasoursint/CMSSW_5_3_0/src/FWCore/Services/src/CPU.cc

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// -*- C++ -*-
//
// Package:     Services
// Class  :     CPU
// 
// Implementation:
//
// Original Author:  Natalia Garcia
// CPU.cc: v 1.0 2009/01/08 11:31:07


#include "FWCore/Services/src/CPU.h"
#include "FWCore/MessageLogger/interface/JobReport.h"
#include "FWCore/ServiceRegistry/interface/ActivityRegistry.h"
#include "FWCore/ServiceRegistry/interface/Service.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "FWCore/ParameterSet/interface/ConfigurationDescriptions.h"
#include "FWCore/ParameterSet/interface/ParameterSetDescription.h"

#include <iostream>
#include <sys/time.h>
#include <sys/resource.h>
#include <stdio.h>
#include <string>
#include <fstream>
#include <sstream>
#include <set>

namespace edm {
  namespace service {
    namespace {

      std::string i2str(int i){
        std::ostringstream t;
        t << i;
        return t.str();
      }

      std::string d2str(double d){
        std::ostringstream t;
        t << d;
        return t.str();
      }

      double str2d(std::string s){
        return atof(s.c_str());
      }

      int str2i(std::string s){
        return atoi(s.c_str());
      }

      void trim(std::string& s, const std::string& drop = " \t") {
        std::string::size_type p = s.find_last_not_of(drop);
        if(p != std::string::npos) {
          s = s.erase(p+1);
        }
        s = s.erase(0, s.find_first_not_of(drop));
      }

      std::string eraseExtraSpaces(std::string s) {
        bool founded = false; 
        std::string aux;
        for(std::string::const_iterator iter = s.begin(); iter != s.end(); iter++){
                if(founded){
                        if(*iter == ' ') founded = true;
                        else{
                                aux += " "; aux += *iter;
                                founded = false;
                        }
                }
                else{
                        if(*iter == ' ') founded = true;
                        else aux += *iter;
                }
        }
        return aux;
      }
    } // namespace {}


    CPU::CPU(const ParameterSet& iPS, ActivityRegistry&iRegistry):
        totalNumberCPUs_(0),
        averageCoreSpeed_(0.0),
        reportCPUProperties_(iPS.getUntrackedParameter<bool>("reportCPUProperties"))
    {
        iRegistry.watchPostEndJob(this,&CPU::postEndJob);
    }


    CPU::~CPU()
    {
    }

    void CPU::fillDescriptions(edm::ConfigurationDescriptions & descriptions) {
      edm::ParameterSetDescription desc;
      desc.addUntracked<bool>("reportCPUProperties", false);
      descriptions.add("CPU", desc);
    }


    void CPU::postEndJob()
    {
      Service<JobReport> reportSvc;

      std::map<std::string, std::string> reportCPUProperties; // Summary
      std::map<std::string, std::string> currentCoreProperties; // Module(s)

      std::ifstream fcpuinfo ("/proc/cpuinfo");

      if(fcpuinfo.is_open()){

        std::string buf;
        std::string currentCore;
        std::string CPUModels;

        std::set<std::string> models;

        while(!fcpuinfo.eof()){

                std::getline(fcpuinfo, buf);

                std::istringstream iss(buf);
                std::string token;
                std::string property;
                std::string value;

                int time = 1;

                while(std::getline(iss, token, ':')) {
                        switch(time){
                        case 1:
                                property = token;
                                break;
                        case 2:
                                value = token;
                                break;
                        default:
                                value += token;
                                break;
                        }
                        time++;
                }
                trim(property);
                trim(value);

                if(!property.empty()){
                        if(property == "processor") {
                            if(reportCPUProperties_){
                                if(currentCore.empty()) { // first core
                                        currentCore = value;
                                }
                                else{
                                        reportSvc->reportPerformanceForModule("SystemCPU", "CPU-"+currentCore, currentCoreProperties);
                                        currentCoreProperties.clear();
                                        currentCore = value;
                                }
                            }
                            totalNumberCPUs_++;
                        }
                        else {
                                if(reportCPUProperties_){
                                        currentCoreProperties.insert(std::make_pair(property, value));
                                }
                                if(property == "cpu MHz"){
                                        averageCoreSpeed_ += str2d(value);
                                }
                                if(property == "model name"){
                                        models.insert(eraseExtraSpaces(value));
                                }
                        }
                }
        } //while

        fcpuinfo.close();

        if(!currentCore.empty() && reportCPUProperties_) {
                reportSvc->reportPerformanceForModule("SystemCPU", "CPU-"+currentCore, currentCoreProperties);
        }

        reportCPUProperties.insert(std::make_pair("totalCPUs", i2str(totalNumberCPUs_)));
        
        if(totalNumberCPUs_ == 0){
                averageCoreSpeed_ = 0.0;
        }
        else{
                averageCoreSpeed_ = averageCoreSpeed_/totalNumberCPUs_;
        }
        
        reportCPUProperties.insert(std::make_pair("averageCoreSpeed", d2str(averageCoreSpeed_)));

        int model = 0;
        for(std::set<std::string>::const_iterator iter = models.begin(); iter != models.end(); iter++){
                if(model == 0)
                        CPUModels += *iter;
                else
                        CPUModels += ", " + *iter;
                model++;
        }
        reportCPUProperties.insert(std::make_pair("CPUModels", CPUModels));


        reportSvc->reportPerformanceSummary("SystemCPU", reportCPUProperties);

      } //if
    } //postEndJob
  } //service
}  //edm