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// File: OSD_Chronometer.cxx
// Created: Mon Nov 16 15:20:41 1992
// Author: Mireille MERCIEN
// <mip@sdsun3>
#include <OSD_Chronometer.ixx>
#include <Standard_Stream.hxx>
// ====================== PLATFORM-SPECIFIC PART ========================
#ifndef WNT
//---------- Systemes autres que WNT : ----------------------------------
#ifdef HAVE_CONFIG_H
# include <oce-config.h>
#endif
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifdef HAVE_SYS_TIMES_H
# include <sys/times.h>
#endif
#ifdef SOLARIS
# include <sys/resource.h>
#endif
//=======================================================================
//Selon les plateformes on doit avoir le nombre de clicks par secondes
//qui est l unite de mesure du temps.
//=======================================================================
#ifndef sysconf
# define _sysconf sysconf
#endif
#if defined(HAVE_TIME_H) || defined(WNT) || defined(DECOSF1)
# include <time.h>
#endif
# ifndef CLK_TCK
# define CLK_TCK CLOCKS_PER_SEC
# endif
#ifdef OCE_HAVE_LIMITS
# include <limits>
#elif defined (OCE_HAVE_LIMITS_H)
# include <limits.h>
#endif
#if defined(__APPLE__) && defined(__MACH__)
#include "gettime_osx.h"
#endif
//=======================================================================
//function : GetProcessCPU
//purpose :
//=======================================================================
void OSD_Chronometer::GetProcessCPU (Standard_Real& UserSeconds, Standard_Real& SystemSeconds)
{
#if defined(LIN) || defined(linux) || defined(__FreeBSD__)
static const long aCLK_TCK = sysconf(_SC_CLK_TCK);
#else
static const long aCLK_TCK = CLK_TCK;
#endif
tms CurrentTMS;
times (&CurrentTMS);
UserSeconds = (Standard_Real)CurrentTMS.tms_utime / aCLK_TCK;
SystemSeconds = (Standard_Real)CurrentTMS.tms_stime / aCLK_TCK;
}
//=======================================================================
//function : GetThreadCPU
//purpose :
//=======================================================================
void OSD_Chronometer::GetThreadCPU (Standard_Real& UserSeconds, Standard_Real& SystemSeconds)
{
UserSeconds = SystemSeconds = 0.;
#if defined(_POSIX_TIMERS) && defined(_POSIX_THREAD_CPUTIME)
// on Linux, only user times are available for threads via clock_gettime()
struct timespec t;
if ( ! clock_gettime(CLOCK_THREAD_CPUTIME_ID,&t) )
{
UserSeconds = t.tv_sec + 0.000000001 * t.tv_nsec;
}
#elif defined(SOLARIS)
// on Solaris, both user and system times are available as LWP times
struct rusage rut;
if ( ! getrusage (RUSAGE_LWP, &rut) )
{
UserSeconds = rut.ru_utime.tv_sec + 0.000001 * rut.ru_utime.tv_usec;
SystemSeconds = rut.ru_stime.tv_sec + 0.000001 * rut.ru_stime.tv_usec;
}
#else
#pragma error "OS is not supported yet; code to be ported"
#endif
}
#else
//---------------------------- Systeme WNT --------------------------------
#define STRICT
#include <windows.h>
//=======================================================================
//function : EncodeFILETIME
//purpose : Encode time defined by FILETIME structure
// (100s nanoseconds since January 1, 1601) to 64-bit integer
//=======================================================================
static inline __int64 EncodeFILETIME (PFILETIME pFt)
{
__int64 qw;
qw = pFt -> dwHighDateTime;
qw <<= 32;
qw |= pFt -> dwLowDateTime;
return qw;
}
//=======================================================================
//function : GetProcessCPU
//purpose :
//=======================================================================
void OSD_Chronometer::GetProcessCPU (Standard_Real& UserSeconds, Standard_Real& SystemSeconds)
{
FILETIME ftStart, ftExit, ftKernel, ftUser;
::GetProcessTimes (GetCurrentProcess(), &ftStart, &ftExit, &ftKernel, &ftUser);
UserSeconds = 0.0000001 * EncodeFILETIME (&ftUser);
SystemSeconds = 0.0000001 * EncodeFILETIME (&ftKernel);
}
//=======================================================================
//function : GetThreadCPU
//purpose :
//=======================================================================
void OSD_Chronometer::GetThreadCPU (Standard_Real& UserSeconds, Standard_Real& SystemSeconds)
{
FILETIME ftStart, ftExit, ftKernel, ftUser;
::GetThreadTimes (GetCurrentThread(), &ftStart, &ftExit, &ftKernel, &ftUser);
UserSeconds = 0.0000001 * EncodeFILETIME (&ftUser);
SystemSeconds = 0.0000001 * EncodeFILETIME (&ftKernel);
}
#endif /* WNT */
// ====================== PLATFORM-INDEPENDENT PART ========================
//=======================================================================
//function : OSD_Chronometer
//purpose :
//=======================================================================
OSD_Chronometer::OSD_Chronometer(const Standard_Boolean ThisThreadOnly)
{
ThreadOnly = ThisThreadOnly;
Start_user = Start_sys = 0.;
Cumul_user = Cumul_sys = 0.;
Stopped = Standard_True;
}
//=======================================================================
//function : Destroy
//purpose :
//=======================================================================
void OSD_Chronometer::Destroy ()
{
}
//=======================================================================
//function : Reset
//purpose :
//=======================================================================
void OSD_Chronometer::Reset ()
{
Stopped = Standard_True;
Start_user = Start_sys = 0.;
Cumul_user = Cumul_sys = 0.;
}
//=======================================================================
//function : Stop
//purpose :
//=======================================================================
void OSD_Chronometer::Stop ()
{
if ( !Stopped ) {
Standard_Real Curr_user, Curr_sys;
if ( ThreadOnly )
GetThreadCPU (Curr_user, Curr_sys);
else
GetProcessCPU (Curr_user, Curr_sys);
Cumul_user += Curr_user - Start_user;
Cumul_sys += Curr_sys - Start_sys;
Stopped = Standard_True;
}
// else cerr << "WARNING: OSD_Chronometer already stopped !\n" << flush;
}
//=======================================================================
//function : Start
//purpose :
//=======================================================================
void OSD_Chronometer::Start ()
{
if ( Stopped ) {
if ( ThreadOnly )
GetThreadCPU (Start_user, Start_sys);
else
GetProcessCPU (Start_user, Start_sys);
Stopped = Standard_False;
}
// else cerr << "WARNING: OSD_Chronometer already running !\n" << flush;
}
//=======================================================================
//function : Show
//purpose :
//=======================================================================
void OSD_Chronometer::Show ()
{
Show (cout);
}
//=======================================================================
//function : Show
//purpose :
//=======================================================================
void OSD_Chronometer::Show (Standard_OStream& os)
{
Standard_Boolean StopSav = Stopped;
if (!StopSav) Stop();
std::streamsize prec = os.precision (12);
os << "CPU user time: " << Cumul_user << " seconds " << endl;
os << "CPU system time: " << Cumul_sys << " seconds " << endl;
os.precision (prec);
if (!StopSav) Start();
}
//=======================================================================
//function : Show
//purpose : Returns cpu user time
//=======================================================================
void OSD_Chronometer::Show (Standard_Real& second)
{
Standard_Boolean StopSav = Stopped;
if (!StopSav) Stop();
second = Cumul_user;
if (!StopSav) Start();
}
//=======================================================================
//function : Show
//purpose : Returns both user and system cpu times
//=======================================================================
void OSD_Chronometer::Show (Standard_Real& user,
Standard_Real& system)
{
Standard_Boolean StopSav = Stopped;
if (!StopSav) Stop();
user = Cumul_user;
system = Cumul_sys;
if (!StopSav) Start();
}
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