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Toshihiro Shimizu 890ddd
Toshihiro Shimizu 890ddd
#include "tstopwatch.h"
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tomosu eea0ac
#include <sstream></sstream>
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#ifdef _WIN32
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#include <stdlib.h></stdlib.h>
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#else  //_WIN32
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#include <unistd.h></unistd.h>
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#include <limits.h></limits.h>
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#include <sys times.h=""></sys>
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#include <sys types.h=""></sys>
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#include <time.h></time.h>
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#ifndef STW_TICKS_PER_SECOND
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#ifndef _WIN32
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extern "C" long sysconf(int);
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#define STW_TICKS_PER_SECOND sysconf(_SC_CLK_TCK)
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#else
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#define STW_TICKS_PER_SECOND CLK_TCK
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#endif
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#endif
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#endif
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#define MAXSWNAMELENGHT 40
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#define MAXSWTIMELENGHT 12
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TStopWatch TStopWatch::StopWatch[10];
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enum TimerType { TTUUnknown, TTUHiRes, TTUTickCount };
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static void determineTimer();
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#ifdef _WIN32
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static TimerType timerToUse = TTUUnknown;
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static LARGE_INTEGER perfFreq;  // ticks per second
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static int perfFreqAdjust = 0;  // in case Freq is too big
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static int overheadTicks  = 0;  // overhead  in calling timer
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#else
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static TimerType timerToUse = TTUTickCount;
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#endif
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using namespace std;
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//-----------------------------------------------------------
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TStopWatch::TStopWatch(std::string name)
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    : m_name(name), m_active(false), m_isRunning(false) {
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  if (timerToUse == TTUUnknown) determineTimer();
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  m_start = 0;
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#ifdef _WIN32
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  m_startUser.dwHighDateTime = m_startUser.dwLowDateTime = 0;
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  m_startSystem.dwHighDateTime = m_startSystem.dwLowDateTime = 0;
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#else
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  m_startUser               = 0;
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  m_startSystem             = 0;
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#endif  //_WIN32
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  m_tm       = 0;
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  m_tmUser   = 0;
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  m_tmSystem = 0;
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}
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//-----------------------------------------------------------
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TStopWatch::~TStopWatch() { m_active = false; }
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//-----------------------------------------------------------
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void TStopWatch::setStartToCurrentTime() {
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#ifdef _WIN32
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  FILETIME creationTime, exitTime;
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  BOOL ret =
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      GetProcessTimes(GetCurrentProcess(),  // specifies the process of interest
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                      &creationTime, &exitTime, &m_startSystem, &m_startUser);
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  if (timerToUse == TTUTickCount) {
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    m_start = GetTickCount();
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  } else {
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    QueryPerformanceCounter(&m_hrStart);
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  }
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#else
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  struct tms clk;
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  m_start       = times(&clk);
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  m_startUser   = clk.tms_utime;
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  m_startSystem = clk.tms_stime;
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#endif  //_WIN32
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}
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//-----------------------------------------------------------
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void TStopWatch::reset() {
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  m_tm       = 0;
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  m_tmUser   = 0;
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  m_tmSystem = 0;
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  setStartToCurrentTime();
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}
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//-----------------------------------------------------------
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void TStopWatch::start(bool resetFlag) {
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  if (resetFlag) reset();
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  if (m_isRunning) return;
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  m_active    = true;
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  m_isRunning = true;
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  setStartToCurrentTime();
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}
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//-----------------------------------------------------------
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#ifdef _WIN32
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inline __int64 FileTimeToInt64(LPFILETIME pFileTime) {
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  __int64 val;
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  val = pFileTime->dwHighDateTime;
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  val <<= 32;
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  val |= pFileTime->dwLowDateTime;
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  return val;
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}
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#endif  //_WIN32
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//-----------------------------------------------------------
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//
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// Aggiunge il tempo trascorso fra start(startUser, startSystem) e l'istante
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// corrente
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// a tm(tmUser, tmSystem)
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//
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static void checkTime(START start, START_USER startUser,
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                      START_SYSTEM startSystem, TM_TOTAL &tm, TM_USER &tmUser,
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                      TM_SYSTEM &tmSystem) {
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  assert(timerToUse == TTUTickCount);
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#ifdef _WIN32
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  DWORD tm_stop;
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  FILETIME creationTime, exitTime, stopSystem, stopUser;
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  BOOL ret =
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      GetProcessTimes(GetCurrentProcess(),  // specifies the process of interest
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                      &creationTime, &exitTime, &stopSystem, &stopUser);
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  tm_stop = GetTickCount();
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  assert(tm_stop >= start);
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  tm += tm_stop - start;  // total elapsed time
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  tmUser += FileTimeToInt64(&stopUser) -
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            FileTimeToInt64(&startUser);  // user elapsed time
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  tmSystem += FileTimeToInt64(&stopSystem) -
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              FileTimeToInt64(&startSystem);  // system elapsed time
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#else  // _WIN32
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  struct tms clk;
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  clock_t tm_stop;
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  tm_stop = times(&clk);
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  assert(tm_stop >= start);
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  tm += tm_stop - start;
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  tmUser += clk.tms_utime - startUser;
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  tmSystem += clk.tms_stime - startSystem;
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#endif  // _WIN32
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}
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//-----------------------------------------------------------
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#ifdef _WIN32
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//
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// come checkTime, ma usa i timer ad alta risoluzione
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//
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namespace {
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//-----------------------------------------------------------
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void hrCheckTime(LARGE_INTEGER start, START_USER startUser,
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                 START_SYSTEM startSystem, TM_TOTAL &tm, TM_USER &tmUser,
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                 TM_SYSTEM &tmSystem) {
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  assert(timerToUse != TTUTickCount);
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  LARGE_INTEGER hrTm_stop;
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  FILETIME creationTime, exitTime, stopSystem, stopUser;
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  BOOL ret =
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      GetProcessTimes(GetCurrentProcess(),  // specifies the process of interest
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                      &creationTime, &exitTime, &stopSystem, &stopUser);
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  QueryPerformanceCounter(&hrTm_stop);
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  assert(hrTm_stop.HighPart > start.HighPart ||
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         hrTm_stop.HighPart == start.HighPart &&
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             hrTm_stop.LowPart >= start.LowPart);
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  LARGE_INTEGER Freq = perfFreq;
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  int Oht            = overheadTicks;
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  LARGE_INTEGER dtime;
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  // faccio "a mano" la differenza dtime = m_tStop - m_tStart
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  dtime.HighPart = hrTm_stop.HighPart - start.HighPart;
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  if (hrTm_stop.LowPart >= start.LowPart)
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    dtime.LowPart = hrTm_stop.LowPart - start.LowPart;
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  else {
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    assert(dtime.HighPart > 0);
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    dtime.HighPart--;
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    dtime.LowPart = hrTm_stop.LowPart + ~start.LowPart + 1;
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  }
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  int shift = 0;
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  if (Freq.HighPart > 0) {
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    int h = Freq.HighPart;
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    while (h > 0) {
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      h >>= 1;
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      shift++;
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    }
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  }
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  if ((dtime.HighPart >> shift) > 0) {
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    int h = dtime.HighPart >> shift;
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    while (h > 0) {
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      h >>= 1;
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      shift++;
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    }
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  }
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  if (shift > 0) {
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    dtime.QuadPart = Int64ShrlMod32(dtime.QuadPart, shift);
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    Freq.QuadPart  = Int64ShrlMod32(Freq.QuadPart, shift);
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  }
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  assert(Freq.HighPart == 0);
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  assert(dtime.HighPart == 0);
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  double totalTime = 1000.0 * dtime.LowPart / Freq.LowPart;
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  tm += troundp(totalTime);
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  tmUser += FileTimeToInt64(&stopUser) -
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            FileTimeToInt64(&startUser);  // user elapsed time
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  tmSystem += FileTimeToInt64(&stopSystem) -
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              FileTimeToInt64(&startSystem);  // system elapsed time
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}
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//-----------------------------------------------------------
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}  // namespace
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#endif  // _WIN32
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//-----------------------------------------------------------
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void TStopWatch::stop() {
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  if (!m_isRunning) return;
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  m_isRunning = false;
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#ifdef _WIN32
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  if (timerToUse == TTUTickCount)
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    checkTime(m_start, m_startUser, m_startSystem, m_tm, m_tmUser, m_tmSystem);
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  else
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    hrCheckTime(m_hrStart, m_startUser, m_startSystem, m_tm, m_tmUser,
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                m_tmSystem);
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#else
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  checkTime(m_start, m_startUser, m_startSystem, m_tm, m_tmUser, m_tmSystem);
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#endif
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}
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//-----------------------------------------------------------
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void TStopWatch::getElapsedTime(TM_TOTAL &tm, TM_USER &user,
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                                TM_SYSTEM &system) {
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  if (m_isRunning) {
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    TM_TOTAL cur_tm        = 0;
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    TM_USER cur_tmUser     = 0;
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    TM_SYSTEM cur_tmSystem = 0;
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#ifdef _WIN32
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    if (timerToUse == TTUTickCount)
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      checkTime(m_start, m_startUser, m_startSystem, cur_tm, cur_tmUser,
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                cur_tmSystem);
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    else
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      hrCheckTime(m_hrStart, m_startUser, m_startSystem, cur_tm, cur_tmUser,
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                  cur_tmSystem);
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#else
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    checkTime(m_start, m_startUser, m_startSystem, cur_tm, cur_tmUser,
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              cur_tmSystem);
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#endif
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    tm     = m_tm + cur_tm;
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    user   = m_tmUser + cur_tmUser;
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    system = m_tmSystem + cur_tmSystem;
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  } else {
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    tm     = m_tm;
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    user   = m_tmUser;
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    system = m_tmSystem;
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  }
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}
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//-----------------------------------------------------------
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TUINT32 TStopWatch::getTotalTime() {
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  TM_TOTAL tm;
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  TM_USER user;
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  TM_SYSTEM system;
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  getElapsedTime(tm, user, system);
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#ifdef _WIN32
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  return tm;
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#else
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  return (TINT32)(tm * 1000) / STW_TICKS_PER_SECOND;
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#endif  //_WIN32
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}
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//-----------------------------------------------------------
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TUINT32 TStopWatch::getUserTime() {
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  TM_TOTAL tm;
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  TM_USER user;
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  TM_SYSTEM system;
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  getElapsedTime(tm, user, system);
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#ifdef _WIN32
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  return (TINT32)(user / 10000);
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#else
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  return (TINT32)(user * 1000) / STW_TICKS_PER_SECOND;
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#endif  //_WIN32
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}
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//-----------------------------------------------------------
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TUINT32 TStopWatch::getSystemTime() {
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  TM_TOTAL tm;
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  TM_USER user;
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  TM_SYSTEM system;
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  getElapsedTime(tm, user, system);
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#ifdef _WIN32
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  return (TINT32)(system / 10000);
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#else
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  return (TINT32)(system * 1000) / STW_TICKS_PER_SECOND;
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#endif  //_WIN32
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}
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//-----------------------------------------------------------
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TStopWatch::operator string() {
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  ostringstream out;
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  out << m_name.c_str() << ": " << (int)getTotalTime() << " u"
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      << (int)getUserTime() << " s" << (TINT32)getSystemTime();
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  return out.str();
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}
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//------------------------------------------------------------
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void TStopWatch::print() { print(cout); }
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//-------------------------------------------------------------------------------------------
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void TStopWatch::print(ostream &out) {
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  string s(*this);
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  out << s.c_str() << endl;
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}
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//-------------------------------------------------------------------------------------------
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void TStopWatch::printGlobals(ostream &out) {
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  const int n = sizeof(StopWatch) / sizeof(StopWatch[0]);
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  for (int i = 0; i < n; i++)
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    if (StopWatch[i].m_active) StopWatch[i].print(out);
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}
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//-------------------------------------------------------------------------------------------
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void TStopWatch::printGlobals() { printGlobals(cout); }
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//-----------------------------------------------------------
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#ifdef _WIN32
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2fc36c
static void dummyFunction() {
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  // It's used just to calculate the overhead
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  return;
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}
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void determineTimer() {
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  void (*pFunc)() = dummyFunction;
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  // cout << "DETERMINE TIMER" << endl;
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  // Assume the worst
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  timerToUse = TTUTickCount;
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  if (QueryPerformanceFrequency(&perfFreq)) {
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    // We can use hires timer, determine overhead
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    timerToUse    = TTUHiRes;
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    overheadTicks = 200;
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    for (int i = 0; i < 20; i++) {
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      LARGE_INTEGER b, e;
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      int Ticks;
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      QueryPerformanceCounter(&b);
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      (*pFunc)();
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      QueryPerformanceCounter(&e);
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      Ticks = e.LowPart - b.LowPart;
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      if (Ticks >= 0 && Ticks < overheadTicks) overheadTicks = Ticks;
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    }
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    // See if Freq fits in 32 bits; if not lose some precision
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    perfFreqAdjust = 0;
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    int High32     = perfFreq.HighPart;
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    while (High32) {
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      High32 >>= 1;
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      perfFreqAdjust++;
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    }
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  }
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}
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#else
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void determineTimer() {}
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#endif