/data/doxygen/doxygen-1.7.3/gen/CMSSW_4_2_8/src/HLTrigger/Timer/src/TimerService.cc

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#include "HLTrigger/Timer/interface/TimerService.h"
#include <iostream>

edm::CPUTimer * TimerService::cpu_timer = 0;

TimerService::TimerService(const edm::ParameterSet& ps, 
                                 edm::ActivityRegistry& iAR)
{
  // whether to use CPU-time (default) or wall-clock time
  useCPUtime = ps.getUntrackedParameter<bool>("useCPUtime", true);

  iAR.watchPreModule(this, &TimerService::preModule);
  iAR.watchPostModule(this, &TimerService::postModule);
  
  if(!cpu_timer)
    cpu_timer = new edm::CPUTimer();

}

TimerService::~TimerService()
{
  if(cpu_timer){
    using namespace std;

    string longLine("=========================================================="); 
    cout << longLine << endl;
    cout << " TimerService Info:\n";
    
    if(useCPUtime)
      cout << " Used CPU-time ";
    else
      cout << " Used wall-clock-time ";
    cout << "for timing information " << endl;
    cout << longLine << endl;
    
    delete cpu_timer; cpu_timer = 0;
  }
}

// fwk calls this method before a module is processed
void TimerService::preModule(const edm::ModuleDescription& iMod)
{
  cpu_timer->reset();
  cpu_timer->start();  
}

// fwk calls this method after a module has been processed
void TimerService::postModule(const edm::ModuleDescription& iMod)
{
  cpu_timer->stop();

  double time = -999; // in secs
  if(useCPUtime)
    time = cpu_timer->cpuTime();
  else
    time = cpu_timer->realTime();

  newMeasurementSignal(iMod, time);
}