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# Timing.cpp

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    00001 // $Id: Timing.cpp,v 1.3 2002/11/12 18:34:30 mato Exp $
    00002 //====================================================================
    00003 //      Timing.cpp
    00004 //--------------------------------------------------------------------
    00005 //
    00006 //      Package    : System (The LHCb System service)
    00007 //
    00008 //  Description: Implementation of Systems internals
    00009 //
    00010 //      Author     : M.Frank
    00011 //  Created    : 13/1/99
    00012 //      Changes    :
    00013 //====================================================================
    00014 #define GAUDIKERNEL_TIMING_CPP
    00015
    00016 #include "GaudiKernel/Timing.h"
    00017 #include "ProcessDescriptor.h"
    00018
    00019 #include <ctime>
    00020 #include <climits>
    00021 #ifdef _WIN32
    00022 #include <windows.h>
    00023 #else
    00024 #include <sys/time.h>
    00025 #include <sys/times.h>
    00026 #include <unistd.h>
    00027 #endif
    00028
    00029 #ifdef _WIN32
    00030 static const longlong UNIX_BASE_TIME = 116444736000000000;
    00031 #else
    00032 static const longlong UNIX_BASE_TIME = 0;
    00033 #endif
    00034
    00035 // convert time from internal representation to the appropriate type
    00036 // Internal representation for WIN32: 100 nanosecond intervals
    00037 //                             Unix:    1 clock tick (usually 10 mille seconds)
    00038 longlong System::adjustTime(TimeType typ, longlong t)   {
    00039   if ( t != -1 )   {
    00040 #ifndef _WIN32
    00041
    00042     //  t /= CLK_TCK ;     // needs division by clock tick unit
    00046
    00048 #endif
    00049     switch( typ )   {
    00050     case Year:      t /= 365;
    00051     case Day:       t /= 24;
    00052     case Hour:      t /= 60;
    00053     case Min:       t /= 60;
    00054     case Sec:       t /= 1000;
    00055     case milliSec:  t /= 1000;
    00056     case microSec:  t /= 10;                    break;
    00057     case nanoSec:   t *= 100;                   break;
    00058     case Month:     t /= (12*24*3600);
    00059                     t /= 10000000;              break;
    00060     default:                                    break;
    00061     }
    00062   }
    00063   return t;
    00064 }
    00065
    00067 longlong System::tickCount()    {
    00068   longlong count = 10000;
    00069 #ifdef _WIN32
    00070   count *= ::GetTickCount(); // Number of milliSec since system startup
    00071 #else
    00072   struct tms buf;
    00073   count *= 10*times(&buf);
    00074 #endif
    00075   return count;
    00076 }
    00077
    00078 #include <iostream>
    00079
    00081 longlong System::currentTime(TimeType typ)    {
    00082   longlong current = 0;
    00083 #ifdef _WIN32
    00084   ::GetSystemTimeAsFileTime((FILETIME*)&current);
    00085   current -= UNIX_BASE_TIME;
    00086 #else
    00087   struct timeval tv;
    00088   struct timezone tz;
    00089   ::gettimeofday(&tv, &tz);
    00090   current  = tv.tv_sec;
    00091   current *= 1000000;
    00092   current += tv.tv_usec;
    00093   current *= 10;
    00094 #endif
    00095   return adjustTime(typ, current);
    00096 }
    00097
    00099 longlong System::systemStart(TimeType typ)    {
    00100   static longlong sys_start = 0;
    00101   if ( 0 == sys_start )   {
    00102     longlong c = currentTime(microSec);
    00103     longlong t = tickCount();
    00104     sys_start = 10*c - t;
    00105   }
    00106   return adjustTime(typ, sys_start);
    00107 }
    00108
    00110 longlong System::upTime(TimeType typ)    {
    00111   static longlong sys_start = 10*systemStart(microSec);
    00112   return adjustTime(typ, 10*currentTime(microSec)-sys_start);
    00113 }
    00114
    00116 longlong System::creationTime(TimeType typ, InfoType fetch, long pid)   {
    00117   longlong created = 0;
    00118   KERNEL_USER_TIMES info;
    00119   if ( fetch != NoFetch && getProcess()->query(pid, fetch, &info) )   {
    00120     created = adjustTime(typ, info.CreateTime-UNIX_BASE_TIME);
    00121   }
    00122   return created;
    00123 }
    00124
    00126 longlong System::remainingTime(TimeType typ, InfoType fetch, long pid)   {
    00127   longlong left = 0;
    00128   QUOTA_LIMITS quota;
    00129   if ( fetch != NoFetch && getProcess()->query(pid, fetch, &quota) )   {
    00130     if ( left == -1 )     {
    00131       //left = _I64_MAX;
    00132     }
    00133     else  {
    00134       left = adjustTime(typ, quota.TimeLimit);
    00135     }
    00136   }
    00137   return left;
    00138 }
    00139
    00141 longlong System::ellapsedTime(TimeType typ, InfoType fetch, long pid) {
    00142   KERNEL_USER_TIMES info;
    00143   longlong ellapsed = currentTime(microSec)*10;
    00144   getProcess()->query(pid, fetch, &info);
    00145   ellapsed = adjustTime(typ, ellapsed+UNIX_BASE_TIME-info.CreateTime);
    00146   return ellapsed;
    00147 }
    00148
    00150 longlong System::kernelTime(TimeType typ, InfoType fetch, long pid) {
    00151   KERNEL_USER_TIMES info;
    00152   longlong kerneltime = 0;
    00153   if ( fetch != NoFetch && getProcess()->query(pid, fetch, &info) )   {
    00154     kerneltime = adjustTime(typ, info.KernelTime );
    00155   }
    00156   return kerneltime;
    00157 }
    00158
    00160 longlong System::userTime(TimeType typ, InfoType fetch, long pid) {
    00161   longlong usertime = 0;
    00162   KERNEL_USER_TIMES info;
    00163   if ( fetch != NoFetch && getProcess()->query(pid, fetch, &info) )   {
    00164     usertime = adjustTime(typ, info.UserTime );
    00165   }
    00166   return usertime;
    00167 }
    00168
    00170 longlong System::cpuTime(TimeType typ, InfoType fetch, long pid) {
    00171   longlong cputime = 0;
    00172   KERNEL_USER_TIMES info;
    00173   if ( fetch != NoFetch && getProcess()->query(pid, fetch, &info) )   {
    00174     cputime = adjustTime(typ, info.KernelTime+info.UserTime );
    00175   }
    00176   return cputime;
    00177 }

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