PerformanceCounter.cpp

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// PerformanceCounter.cpp

#include "PerformanceCounter.h"
#include <sstream>
#include <iomanip>

LONGLONG PerformanceCounter::m_llFrequency = 0;

void PerformanceCounter::Init()
{
  LARGE_INTEGER li;
  QueryPerformanceFrequency(&li);
  m_llFrequency = li.QuadPart;
}

std::ostream& operator<<(std::ostream& os, const PerformanceCounter& pc)
{
  os << format_performance_counter(pc); 
  return os;
}

std::ostream& operator<< (std::ostream &os, const format_performance_counter& fpc)
{
  if (!PerformanceCounter::IsInit())
    PerformanceCounter::Init();
  bool showseconds = false;
  if (fpc.m_options & format_performance_counter::show_seconds)
    showseconds = true;
  bool showmilliseconds = false;
  if (fpc.m_options & format_performance_counter::show_milliseconds)
  {
    showmilliseconds = true;
    showseconds = true;
  }
  bool showmicroseconds = false;
  if (fpc.m_options & format_performance_counter::show_microseconds)
  {
    showmicroseconds = true;
    showmilliseconds = true;
    showseconds = true;
  }
  bool showdays = false;
  if (fpc.m_options & format_performance_counter::show_days)
    showdays = true;

  LONGLONG ll = fpc.m_pc.m_Counter.QuadPart;
  LONGLONG llDays = fpc.m_pc.m_Counter.QuadPart/PerformanceCounter::GetFrequency()/3600/24;
  ll -= llDays*3600*24*PerformanceCounter::GetFrequency();
  LONGLONG llHours = ll/PerformanceCounter::GetFrequency()/3600;
  ll -= llHours*3600*PerformanceCounter::GetFrequency();
  LONGLONG llMinutes = ll/PerformanceCounter::GetFrequency()/60;
  ll -= llMinutes*60*PerformanceCounter::GetFrequency();
  LONGLONG llSeconds = ll / PerformanceCounter::GetFrequency();
  ll -= llSeconds*PerformanceCounter::GetFrequency();
  LONGLONG llMilliSeconds = ll * 1000 / PerformanceCounter::GetFrequency();
  ll -= llMilliSeconds*PerformanceCounter::GetFrequency()/1000;
  LONGLONG llMicroSeconds = ll * 1000000 / PerformanceCounter::GetFrequency();
  std::ostringstream ss;
  ss << std::setfill('0') << std::fixed << std::setprecision(0);
  if (llDays || showdays)
    ss << double(llDays) << "+";
  char szTimeSep[4];
  strcpy(szTimeSep, ":\0");
  GetLocaleInfo(LOCALE_USER_DEFAULT, LOCALE_STIME, szTimeSep, sizeof(szTimeSep));
  ss << std::setw(2) << double(llHours);
  ss << szTimeSep << std::setw(2) << double(llMinutes);
  if (showseconds)
    ss << szTimeSep << std::setw(2) << double(llSeconds);
  if (showmilliseconds)
    ss << szTimeSep << std::setw(3) << double(llMilliSeconds);
  if (showmicroseconds)
    ss << szTimeSep << std::setw(3) << double(llMicroSeconds);
  os << ss.str();
  return os;
}

int format_performance_counter::width(int options)
{
  int width = 5;
  if (options & show_seconds)
    width += 3;
  if (options & show_milliseconds)
  {
    width += 4;
    if ((options & show_seconds) == 0)
      width += 3;
  }
  if (options & show_microseconds)
  {
    width += 4;
    if ((options & show_seconds) == 0)
      width += 3;
    if ((options & show_milliseconds) == 0)
      width += 4;
  }
  if (options & show_days)
    width += 2;
  return width;
}

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