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44fae8b193
Remove performance comparing with hardcoded value. Test cases for performance of some commands were moved to perf group. Updated documentation.
330 lines
9.9 KiB
C++
330 lines
9.9 KiB
C++
// Created on: 1992-11-16
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// Created by: Mireille MERCIEN
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// Copyright (c) 1992-1999 Matra Datavision
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// Copyright (c) 1999-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#include <OSD_Chronometer.hxx>
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#include <Standard_Stream.hxx>
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// ====================== PLATFORM-SPECIFIC PART ========================
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#ifndef _WIN32
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//---------- Systemes autres que WNT : ----------------------------------
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#include <sys/times.h>
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#include <unistd.h>
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#ifdef SOLARIS
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# include <sys/resource.h>
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#endif
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//=======================================================================
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//Selon les plateformes on doit avoir le nombre de clicks par secondes
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//qui est l unite de mesure du temps.
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//=======================================================================
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#ifndef sysconf
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# define _sysconf sysconf
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#endif
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#if defined(DECOSF1)
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# include <time.h>
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#endif
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# ifndef CLK_TCK
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# define CLK_TCK CLOCKS_PER_SEC
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# endif
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#if (defined(__APPLE__))
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#include <mach/task.h>
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#include <mach/mach.h>
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#endif
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//=======================================================================
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//function : GetProcessCPU
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//purpose :
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//=======================================================================
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void OSD_Chronometer::GetProcessCPU (Standard_Real& UserSeconds, Standard_Real& SystemSeconds)
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{
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#if defined(__linux__) || defined(__FreeBSD__) || defined(__ANDROID__) || defined(__QNX__)
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static const long aCLK_TCK = sysconf(_SC_CLK_TCK);
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#else
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static const long aCLK_TCK = CLK_TCK;
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#endif
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tms CurrentTMS;
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times (&CurrentTMS);
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UserSeconds = (Standard_Real)CurrentTMS.tms_utime / aCLK_TCK;
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SystemSeconds = (Standard_Real)CurrentTMS.tms_stime / aCLK_TCK;
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}
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//=======================================================================
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//function : GetThreadCPU
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//purpose :
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//=======================================================================
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void OSD_Chronometer::GetThreadCPU (Standard_Real& theUserSeconds,
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Standard_Real& theSystemSeconds)
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{
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theUserSeconds = theSystemSeconds = 0.0;
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#if (defined(__APPLE__))
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struct task_thread_times_info aTaskInfo;
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mach_msg_type_number_t aTaskInfoCount = TASK_THREAD_TIMES_INFO_COUNT;
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if (KERN_SUCCESS == task_info(mach_task_self(), TASK_THREAD_TIMES_INFO,
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(task_info_t )&aTaskInfo, &aTaskInfoCount))
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{
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theUserSeconds = Standard_Real(aTaskInfo.user_time.seconds) + 0.000001 * aTaskInfo.user_time.microseconds;
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theSystemSeconds = Standard_Real(aTaskInfo.system_time.seconds) + 0.000001 * aTaskInfo.system_time.microseconds;
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}
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#elif (defined(_POSIX_TIMERS) && defined(_POSIX_THREAD_CPUTIME)) || defined(__ANDROID__) || defined(__QNX__)
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// on Linux, only user times are available for threads via clock_gettime()
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struct timespec t;
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if (!clock_gettime (CLOCK_THREAD_CPUTIME_ID, &t))
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{
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theUserSeconds = t.tv_sec + 0.000000001 * t.tv_nsec;
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}
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#elif defined(SOLARIS)
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// on Solaris, both user and system times are available as LWP times
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struct rusage rut;
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if (!getrusage (RUSAGE_LWP, &rut))
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{
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theUserSeconds = rut.ru_utime.tv_sec + 0.000001 * rut.ru_utime.tv_usec;
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theSystemSeconds = rut.ru_stime.tv_sec + 0.000001 * rut.ru_stime.tv_usec;
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}
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#else
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#pragma error "OS is not supported yet; code to be ported"
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#endif
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}
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#else
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//---------------------------- Systeme WNT --------------------------------
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#define STRICT
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#include <windows.h>
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//=======================================================================
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//function : EncodeFILETIME
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//purpose : Encode time defined by FILETIME structure
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// (100s nanoseconds since January 1, 1601) to 64-bit integer
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//=======================================================================
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static inline __int64 EncodeFILETIME (PFILETIME pFt)
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{
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__int64 qw;
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qw = pFt -> dwHighDateTime;
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qw <<= 32;
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qw |= pFt -> dwLowDateTime;
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return qw;
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}
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//=======================================================================
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//function : GetProcessCPU
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//purpose :
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//=======================================================================
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void OSD_Chronometer::GetProcessCPU (Standard_Real& UserSeconds, Standard_Real& SystemSeconds)
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{
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#ifndef OCCT_UWP
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FILETIME ftStart, ftExit, ftKernel, ftUser;
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::GetProcessTimes (GetCurrentProcess(), &ftStart, &ftExit, &ftKernel, &ftUser);
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UserSeconds = 0.0000001 * EncodeFILETIME (&ftUser);
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SystemSeconds = 0.0000001 * EncodeFILETIME (&ftKernel);
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#else
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UserSeconds = 0.0;
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SystemSeconds = 0.0;
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#endif
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}
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//=======================================================================
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//function : GetThreadCPU
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//purpose :
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//=======================================================================
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void OSD_Chronometer::GetThreadCPU (Standard_Real& UserSeconds, Standard_Real& SystemSeconds)
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{
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#ifndef OCCT_UWP
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FILETIME ftStart, ftExit, ftKernel, ftUser;
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::GetThreadTimes (GetCurrentThread(), &ftStart, &ftExit, &ftKernel, &ftUser);
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UserSeconds = 0.0000001 * EncodeFILETIME (&ftUser);
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SystemSeconds = 0.0000001 * EncodeFILETIME (&ftKernel);
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#else
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UserSeconds = 0.0;
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SystemSeconds = 0.0;
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#endif
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}
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#endif /* _WIN32 */
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// ====================== PLATFORM-INDEPENDENT PART ========================
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//=======================================================================
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//function : OSD_Chronometer
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//purpose :
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//=======================================================================
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OSD_Chronometer::OSD_Chronometer(const Standard_Boolean ThisThreadOnly)
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{
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ThreadOnly = ThisThreadOnly;
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Start_user = Start_sys = 0.;
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Cumul_user = Cumul_sys = 0.;
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Stopped = Standard_True;
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}
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//=======================================================================
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//function : ~OSD_Chronometer
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//purpose : Destructor
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//=======================================================================
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OSD_Chronometer::~OSD_Chronometer()
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{
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}
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//=======================================================================
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//function : Reset
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//purpose :
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//=======================================================================
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void OSD_Chronometer::Reset ()
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{
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Stopped = Standard_True;
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Start_user = Start_sys = 0.;
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Cumul_user = Cumul_sys = 0.;
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}
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//=======================================================================
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//function : Restart
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//purpose :
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//=======================================================================
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void OSD_Chronometer::Restart ()
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{
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Stopped = Standard_True;
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Start();
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}
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//=======================================================================
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//function : Stop
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//purpose :
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//=======================================================================
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void OSD_Chronometer::Stop ()
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{
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if ( !Stopped ) {
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Standard_Real Curr_user, Curr_sys;
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if ( ThreadOnly )
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GetThreadCPU (Curr_user, Curr_sys);
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else
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GetProcessCPU (Curr_user, Curr_sys);
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Cumul_user += Curr_user - Start_user;
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Cumul_sys += Curr_sys - Start_sys;
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Stopped = Standard_True;
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}
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// else cerr << "WARNING: OSD_Chronometer already stopped !\n" << flush;
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}
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//=======================================================================
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//function : Start
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//purpose :
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//=======================================================================
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void OSD_Chronometer::Start ()
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{
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if ( Stopped ) {
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if ( ThreadOnly )
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GetThreadCPU (Start_user, Start_sys);
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else
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GetProcessCPU (Start_user, Start_sys);
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Stopped = Standard_False;
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}
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// else cerr << "WARNING: OSD_Chronometer already running !\n" << flush;
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}
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//=======================================================================
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//function : Show
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//purpose :
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//=======================================================================
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void OSD_Chronometer::Show() const
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{
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Show (cout);
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}
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//=======================================================================
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//function : Show
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//purpose :
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//=======================================================================
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void OSD_Chronometer::Show (Standard_OStream& os) const
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{
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Standard_Real aCumulUserSec = Cumul_user;
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Standard_Real aCumulSysSec = Cumul_sys;
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if (!Stopped)
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{
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Standard_Real aCurrUser, aCurrSys;
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if (ThreadOnly)
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GetThreadCPU (aCurrUser, aCurrSys);
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else
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GetProcessCPU (aCurrUser, aCurrSys);
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aCumulUserSec += aCurrUser - Start_user;
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aCumulSysSec += aCurrSys - Start_sys;
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}
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std::streamsize prec = os.precision (12);
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os << "CPU user time: " << aCumulUserSec << " seconds " << endl;
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os << "CPU system time: " << aCumulSysSec << " seconds " << endl;
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os.precision (prec);
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}
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//=======================================================================
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//function : Show
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//purpose : Returns cpu user time
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//=======================================================================
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void OSD_Chronometer::Show (Standard_Real& theUserSec) const
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{
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theUserSec = Cumul_user;
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if (Stopped)
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{
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return;
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}
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Standard_Real aCurrUser, aCurrSys;
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if (ThreadOnly)
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GetThreadCPU (aCurrUser, aCurrSys);
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else
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GetProcessCPU (aCurrUser, aCurrSys);
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theUserSec += aCurrUser - Start_user;
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}
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//=======================================================================
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//function : Show
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//purpose : Returns both user and system cpu times
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//=======================================================================
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void OSD_Chronometer::Show (Standard_Real& theUserSec,
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Standard_Real& theSystemSec) const
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{
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theUserSec = Cumul_user;
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theSystemSec = Cumul_sys;
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if (Stopped)
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{
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return;
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}
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Standard_Real aCurrUser, aCurrSys;
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if (ThreadOnly)
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GetThreadCPU (aCurrUser, aCurrSys);
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else
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GetProcessCPU (aCurrUser, aCurrSys);
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theUserSec += aCurrUser - Start_user;
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theSystemSec += aCurrSys - Start_sys;
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}
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