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lemon/time_measure.h
changeset 127 1c9a9e2f7d4d
parent 120 137278093143
child 143 c3b45bb643b0
equal deleted inserted replaced
1:12dac57b5e7d 2:ba83b6b3cd62 
    21 
    21 
    22 ///\ingroup timecount
 
    22 ///\ingroup timecount
 
    23 ///\file
 
    23 ///\file
 
    24 ///\brief Tools for measuring cpu usage
 
    24 ///\brief Tools for measuring cpu usage
 
    25 
    25 
       
    26 #ifdef WIN32
 
       
    27 #include <windows.h>
 
       
    28 #include <cmath>
 
       
    29 #else
 
    26 #include <sys/times.h>
 
    30 #include <sys/times.h>
 
    27 
       
    28 #include <sys/time.h>
 
    31 #include <sys/time.h>
 
       
    32 #endif
 
       
    33 
    29 #include <fstream>
 
    34 #include <fstream>
 
    30 #include <iostream>
 
    35 #include <iostream>
 
    31 #include <unistd.h>
 
       
    32 
    36 
    33 namespace lemon {
 
    37 namespace lemon {
 
    34 
    38 
    35   /// \addtogroup timecount
 
    39   /// \addtogroup timecount
 
    36   /// @{
 
    40   /// @{
 
    52   ///
 
    56   ///
 
    53   ///\author Alpar Juttner
 
    57   ///\author Alpar Juttner
 
    54 
    58 
    55   class TimeStamp
 
    59   class TimeStamp
 
    56   {
 
    60   {
 
    57     struct rtms 
    61     double utime;
 
    58     {
 
    62     double stime;
 
    59       double tms_utime;
 
    63     double cutime;
 
    60       double tms_stime;
 
    64     double cstime;
 
    61       double tms_cutime;
 
    65     double rtime;
 
    62       double tms_cstime;
 
    66   
    63       rtms() {}
 
       
    64       rtms(tms ts) : tms_utime(ts.tms_utime), tms_stime(ts.tms_stime),
 
       
    65 		     tms_cutime(ts.tms_cutime), tms_cstime(ts.tms_cstime) {}
 
       
    66     };
 
       
    67     rtms ts;
 
       
    68     double real_time;
 
       
    69   
       
    70     rtms &getTms() {return ts;}
 
       
    71     const rtms &getTms() const {return ts;}
 
       
    72 
       
    73     void _reset() { 
    67     void _reset() { 
    74       ts.tms_utime = ts.tms_stime = ts.tms_cutime = ts.tms_cstime = 0; 
    68       utime = stime = cutime = cstime = rtime = 0;
 
    75       real_time = 0;
 
       
    76     }
 
    69     }
 
    77 
    70 
    78   public:
 
    71   public:
 
    79 
    72 
    80     ///Read the current time values of the process
 
    73     ///Read the current time values of the process
 
    81     void stamp()
 
    74     void stamp()
 
    82     {
 
    75     {
 
       
    76 #ifndef WIN32
 
    83       timeval tv;
 
    77       timeval tv;
 
    84       tms _ts;
 
    78       gettimeofday(&tv, 0);
 
    85       times(&_ts);
 
    79       rtime=tv.tv_sec+double(tv.tv_usec)/1e6;
 
    86       gettimeofday(&tv, 0);real_time=tv.tv_sec+double(tv.tv_usec)/1e6;
 
    80 
    87       ts=_ts;
 
    81       tms ts;
 
       
    82       double tck=sysconf(_SC_CLK_TCK);
 
       
    83       times(&ts);
 
       
    84       utime=ts.tms_utime/tck;
 
       
    85       stime=ts.tms_stime/tck;
 
       
    86       cutime=ts.tms_cutime/tck;
 
       
    87       cstime=ts.tms_cstime/tck;
 
       
    88 #else
 
       
    89       static const double ch = 4294967296.0e-7;
 
       
    90       static const double cl = 1.0e-7;
 
       
    91 
       
    92       FILETIME system;
 
       
    93       GetSystemTimeAsFileTime(&system);
 
       
    94       rtime = ch * system.dwHighDateTime + cl * system.dwLowDateTime;
 
       
    95 
       
    96       FILETIME create, exit, kernel, user;
 
       
    97       if (GetProcessTimes(GetCurrentProcess(),&create, &exit, &kernel, &user)) {
 
       
    98 	utime = ch * user.dwHighDateTime + cl * user.dwLowDateTime;
 
       
    99 	stime = ch * kernel.dwHighDateTime + cl * kernel.dwLowDateTime;
 
       
   100 	cutime = 0;
 
       
   101 	cstime = 0;
 
       
   102       } else {
 
       
   103 	rtime = 0;
 
       
   104 	utime = 0;
 
       
   105 	stime = 0;
 
       
   106 	cutime = 0;
 
       
   107 	cstime = 0;
 
       
   108       }
 
       
   109 #endif      
    88     }
 
   110     }
 
    89   
   111   
    90     /// Constructor initializing with zero
 
   112     /// Constructor initializing with zero
 
    91     TimeStamp()
 
   113     TimeStamp()
 
    92     { _reset(); }
 
   114     { _reset(); }
 
    97     TimeStamp &reset() {_reset();return *this;}
 
   119     TimeStamp &reset() {_reset();return *this;}
 
    98 
   120 
    99     ///\e
 
   121     ///\e
 
   100     TimeStamp &operator+=(const TimeStamp &b)
 
   122     TimeStamp &operator+=(const TimeStamp &b)
 
   101     {
 
   123     {
 
   102       ts.tms_utime+=b.ts.tms_utime;
 
   124       utime+=b.utime;
 
   103       ts.tms_stime+=b.ts.tms_stime;
 
   125       stime+=b.stime;
 
   104       ts.tms_cutime+=b.ts.tms_cutime;
 
   126       cutime+=b.cutime;
 
   105       ts.tms_cstime+=b.ts.tms_cstime;
 
   127       cstime+=b.cstime;
 
   106       real_time+=b.real_time;
 
   128       rtime+=b.rtime;
 
   107       return *this;
 
   129       return *this;
 
   108     }
 
   130     }
 
   109     ///\e
 
   131     ///\e
 
   110     TimeStamp operator+(const TimeStamp &b) const
 
   132     TimeStamp operator+(const TimeStamp &b) const
 
   111     {
 
   133     {
 
   113       return t+=b;
 
   135       return t+=b;
 
   114     }
 
   136     }
 
   115     ///\e
 
   137     ///\e
 
   116     TimeStamp &operator-=(const TimeStamp &b)
 
   138     TimeStamp &operator-=(const TimeStamp &b)
 
   117     {
 
   139     {
 
   118       ts.tms_utime-=b.ts.tms_utime;
 
   140       utime-=b.utime;
 
   119       ts.tms_stime-=b.ts.tms_stime;
 
   141       stime-=b.stime;
 
   120       ts.tms_cutime-=b.ts.tms_cutime;
 
   142       cutime-=b.cutime;
 
   121       ts.tms_cstime-=b.ts.tms_cstime;
 
   143       cstime-=b.cstime;
 
   122       real_time-=b.real_time;
 
   144       rtime-=b.rtime;
 
   123       return *this;
 
   145       return *this;
 
   124     }
 
   146     }
 
   125     ///\e
 
   147     ///\e
 
   126     TimeStamp operator-(const TimeStamp &b) const
 
   148     TimeStamp operator-(const TimeStamp &b) const
 
   127     {
 
   149     {
 
   129       return t-=b;
 
   151       return t-=b;
 
   130     }
 
   152     }
 
   131     ///\e
 
   153     ///\e
 
   132     TimeStamp &operator*=(double b)
 
   154     TimeStamp &operator*=(double b)
 
   133     {
 
   155     {
 
   134       ts.tms_utime*=b;
 
   156       utime*=b;
 
   135       ts.tms_stime*=b;
 
   157       stime*=b;
 
   136       ts.tms_cutime*=b;
 
   158       cutime*=b;
 
   137       ts.tms_cstime*=b;
 
   159       cstime*=b;
 
   138       real_time*=b;
 
   160       rtime*=b;
 
   139       return *this;
 
   161       return *this;
 
   140     }
 
   162     }
 
   141     ///\e
 
   163     ///\e
 
   142     TimeStamp operator*(double b) const
 
   164     TimeStamp operator*(double b) const
 
   143     {
 
   165     {
 
   146     }
 
   168     }
 
   147     friend TimeStamp operator*(double b,const TimeStamp &t);
 
   169     friend TimeStamp operator*(double b,const TimeStamp &t);
 
   148     ///\e
 
   170     ///\e
 
   149     TimeStamp &operator/=(double b)
 
   171     TimeStamp &operator/=(double b)
 
   150     {
 
   172     {
 
   151       ts.tms_utime/=b;
 
   173       utime/=b;
 
   152       ts.tms_stime/=b;
 
   174       stime/=b;
 
   153       ts.tms_cutime/=b;
 
   175       cutime/=b;
 
   154       ts.tms_cstime/=b;
 
   176       cstime/=b;
 
   155       real_time/=b;
 
   177       rtime/=b;
 
   156       return *this;
 
   178       return *this;
 
   157     }
 
   179     }
 
   158     ///\e
 
   180     ///\e
 
   159     TimeStamp operator/(double b) const
 
   181     TimeStamp operator/(double b) const
 
   160     {
 
   182     {
 
   171     friend std::ostream& operator<<(std::ostream& os,const TimeStamp &t);
 
   193     friend std::ostream& operator<<(std::ostream& os,const TimeStamp &t);
 
   172   
   194   
   173     ///Gives back the user time of the process
 
   195     ///Gives back the user time of the process
 
   174     double userTime() const
 
   196     double userTime() const
 
   175     {
 
   197     {
 
   176       return double(ts.tms_utime)/sysconf(_SC_CLK_TCK);
 
   198       return utime;
 
   177     }
 
   199     }
 
   178     ///Gives back the system time of the process
 
   200     ///Gives back the system time of the process
 
   179     double systemTime() const
 
   201     double systemTime() const
 
   180     {
 
   202     {
 
   181       return double(ts.tms_stime)/sysconf(_SC_CLK_TCK);
 
   203       return stime;
 
   182     }
 
   204     }
 
   183     ///Gives back the user time of the process' children
 
   205     ///Gives back the user time of the process' children
 
       
   206 
       
   207     ///\note On <tt>WIN32</tt> platform this value is not calculated. 
       
   208     ///
 
   184     double cUserTime() const
 
   209     double cUserTime() const
 
   185     {
 
   210     {
 
   186       return double(ts.tms_cutime)/sysconf(_SC_CLK_TCK);
 
   211       return cutime;
 
   187     }
 
   212     }
 
   188     ///Gives back the user time of the process' children
 
   213     ///Gives back the user time of the process' children
 
       
   214 
       
   215     ///\note On <tt>WIN32</tt> platform this value is not calculated. 
       
   216     ///
 
   189     double cSystemTime() const
 
   217     double cSystemTime() const
 
   190     {
 
   218     {
 
   191       return double(ts.tms_cstime)/sysconf(_SC_CLK_TCK);
 
   219       return cstime;
 
   192     }
 
   220     }
 
   193     ///Gives back the real time
 
   221     ///Gives back the real time
 
   194     double realTime() const {return real_time;}
 
   222     double realTime() const {return rtime;}
 
   195   };
 
   223   };
 
   196 
   224 
   197   TimeStamp operator*(double b,const TimeStamp &t) 
   225   TimeStamp operator*(double b,const TimeStamp &t) 
   198   {
 
   226   {
 
   199     return t*b;
 
   227     return t*b;
 
   210   /// \li \c s: system cpu time,
 
   238   /// \li \c s: system cpu time,
 
   211   /// \li \c cu: user cpu time of children,
 
   239   /// \li \c cu: user cpu time of children,
 
   212   /// \li \c cs: system cpu time of children,
 
   240   /// \li \c cs: system cpu time of children,
 
   213   /// \li \c real: real time.
 
   241   /// \li \c real: real time.
 
   214   /// \relates TimeStamp
 
   242   /// \relates TimeStamp
 
       
   243   /// \note On <tt>WIN32</tt> platform the cummulative values are not
 
       
   244   /// calculated.
 
   215   inline std::ostream& operator<<(std::ostream& os,const TimeStamp &t)
 
   245   inline std::ostream& operator<<(std::ostream& os,const TimeStamp &t)
 
   216   {
 
   246   {
 
   217     long cls = sysconf(_SC_CLK_TCK);
 
   247     os << "u: " << t.userTime() <<
 
   218     os << "u: " << double(t.getTms().tms_utime)/cls <<
 
   248       "s, s: " << t.systemTime() <<
 
   219       "s, s: " << double(t.getTms().tms_stime)/cls <<
 
   249       "s, cu: " << t.cUserTime() <<
 
   220       "s, cu: " << double(t.getTms().tms_cutime)/cls <<
 
   250       "s, cs: " << t.cSystemTime() <<
 
   221       "s, cs: " << double(t.getTms().tms_cstime)/cls <<
 
       
   222       "s, real: " << t.realTime() << "s";
 
   251       "s, real: " << t.realTime() << "s";
 
   223     return os;
 
   252     return os;
 
   224   }
 
   253   }
 
   225 
   254 
   226   ///Class for measuring the cpu time and real time usage of the process
 
   255   ///Class for measuring the cpu time and real time usage of the process
 
   402     double systemTime() const
 
   431     double systemTime() const
 
   403     {
 
   432     {
 
   404       return operator TimeStamp().systemTime();
 
   433       return operator TimeStamp().systemTime();
 
   405     }
 
   434     }
 
   406     ///Gives back the ellapsed user time of the process' children
 
   435     ///Gives back the ellapsed user time of the process' children
 
       
   436 
       
   437     ///\note On <tt>WIN32</tt> platform this value is not calculated. 
       
   438     ///
 
   407     double cUserTime() const
 
   439     double cUserTime() const
 
   408     {
 
   440     {
 
   409       return operator TimeStamp().cUserTime();
 
   441       return operator TimeStamp().cUserTime();
 
   410     }
 
   442     }
 
   411     ///Gives back the ellapsed user time of the process' children
 
   443     ///Gives back the ellapsed user time of the process' children
 
       
   444 
       
   445     ///\note On <tt>WIN32</tt> platform this value is not calculated. 
       
   446     ///
 
   412     double cSystemTime() const
 
   447     double cSystemTime() const
 
   413     {
 
   448     {
 
   414       return operator TimeStamp().cSystemTime();
 
   449       return operator TimeStamp().cSystemTime();
 
   415     }
 
   450     }
 
   416     ///Gives back the ellapsed real time
 
   451     ///Gives back the ellapsed real time
lemon-1.3