lemon-0.x: src/work/marci/time_measure.h@9b3345f9d8ed

     1 // -*- c++ -*-

     2 #ifndef TIME_MEASURE_H

     3 #define TIME_MEASURE_H

     5 #include <sys/time.h>

     6 #include <sys/times.h>

     7 #include <fstream>

     8 #include <iostream>

    10 double currTime() {

    11   timeval tv;

    12   //timezone tz;

    13   gettimeofday(&tv, 0);

    14   return double(tv.tv_sec)+double(tv.tv_usec)/1000000.0;

    15 }

    17 class TimeStamp

    18 {

    19   tms ts;

    20   double real_time;

    22 public:

    24   tms &getTms() {return ts;}

    25   const tms &getTms() const {return ts;}

    26   double getRealTime() const {return real_time;}

    27   void stamp()

    28   {

    29     timeval tv;

    30     times(&ts);

    31     gettimeofday(&tv, 0);real_time=tv.tv_sec+double(tv.tv_usec)/1e6;

    32   }

    34   TimeStamp()

    35   { ts.tms_utime=ts.tms_stime=ts.tms_cutime=ts.tms_cstime=0; real_time=0;}

    37   TimeStamp(void *) { stamp();}

    39   TimeStamp &operator+=(const TimeStamp &b)

    40   {

    41     ts.tms_utime+=b.ts.tms_utime;

    42     ts.tms_stime+=b.ts.tms_stime;

    43     ts.tms_cutime+=b.ts.tms_cutime;

    44     ts.tms_cstime+=b.ts.tms_cstime;

    45     real_time+=b.real_time;

    46     return *this;

    47   }

    48   TimeStamp operator+(const TimeStamp &b) const

    49   {

    50     TimeStamp t(*this);

    51     return t+=b;

    52   }

    53   TimeStamp &operator-=(const TimeStamp &b)

    54   {

    55     ts.tms_utime-=b.ts.tms_utime;

    56     ts.tms_stime-=b.ts.tms_stime;

    57     ts.tms_cutime-=b.ts.tms_cutime;

    58     ts.tms_cstime-=b.ts.tms_cstime;

    59     real_time-=b.real_time;

    60     return *this;

    61   }

    62   TimeStamp operator-(const TimeStamp &b) const

    63   {

    64     TimeStamp t(*this);

    65     return t-=b;

    66   }

    68   TimeStamp Ellapsed() const

    69   {

    70     TimeStamp t(NULL);

    71     return t-*this;

    72   }

    74   friend std::ostream& operator<<(std::ostream& os,const TimeStamp &t);

    76   double getUserTime() const

    77   {

    78     long cls = sysconf(_SC_CLK_TCK);

    79     return double(ts.tms_utime)/cls;

    80   }

    81   double getSystemTime() const

    82   {

    83     long cls = sysconf(_SC_CLK_TCK);

    84     return double(ts.tms_stime)/cls;

    85   }

    86   double getCUserTime() const

    87   {

    88     long cls = sysconf(_SC_CLK_TCK);

    89     return double(ts.tms_cutime)/cls;

    90   }

    91   double getCSystemTime() const

    92   {

    93     long cls = sysconf(_SC_CLK_TCK);

    94     return double(ts.tms_cstime)/cls;

    95   }

    96 };

    98 class Timer

    99 {

   100   TimeStamp start_time;

   102 public:

   103   void reset() {start_time.stamp();}

   104   Timer() {reset();}

   106   operator TimeStamp ()

   107   {

   108     TimeStamp t;

   109     t.stamp();

   110     return t-start_time;

   111   }

   112 };

   114 inline std::ostream& operator<<(std::ostream& os,const TimeStamp &t)

   115 {

   116   long cls = sysconf(_SC_CLK_TCK);

   117   os << "u: " << double(t.getTms().tms_utime)/cls <<

   118     "s, s: " << double(t.getTms().tms_stime)/cls <<

   119     "s, cu: " << double(t.getTms().tms_cutime)/cls <<

   120     "s, cs: " << double(t.getTms().tms_cstime)/cls <<

   121     "s, real: " << t.getRealTime() << "s";

   122   return os;

   123 }

   125 #endif //TIME_MEASURE_H

author	athos
	Mon, 23 Feb 2004 11:17:41 +0000
changeset 119	9b3345f9d8ed
parent 117	67253d52b284
child 121	9d5a99b282c0
permissions	-rw-r--r--