lemon-0.x: src/work/marci/time_measure.h@5bc1c83257f8

     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>

     9 #include <unistd.h>

    11 double currTime() {

    12   timeval tv;

    13   //timezone tz;

    14   gettimeofday(&tv, 0);

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

    16 }

    18 class TimeStamp

    19 {

    20   tms ts;

    21   double real_time;

    23 public:

    25   tms &getTms() {return ts;}

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

    27   double getRealTime() const {return real_time;}

    28   void stamp()

    29   {

    30     timeval tv;

    31     times(&ts);

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

    33   }

    35   TimeStamp()

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

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

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

    41   {

    42     ts.tms_utime+=b.ts.tms_utime;

    43     ts.tms_stime+=b.ts.tms_stime;

    44     ts.tms_cutime+=b.ts.tms_cutime;

    45     ts.tms_cstime+=b.ts.tms_cstime;

    46     real_time+=b.real_time;

    47     return *this;

    48   }

    49   TimeStamp operator+(const TimeStamp &b) const

    50   {

    51     TimeStamp t(*this);

    52     return t+=b;

    53   }

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

    55   {

    56     ts.tms_utime-=b.ts.tms_utime;

    57     ts.tms_stime-=b.ts.tms_stime;

    58     ts.tms_cutime-=b.ts.tms_cutime;

    59     ts.tms_cstime-=b.ts.tms_cstime;

    60     real_time-=b.real_time;

    61     return *this;

    62   }

    63   TimeStamp operator-(const TimeStamp &b) const

    64   {

    65     TimeStamp t(*this);

    66     return t-=b;

    67   }

    69   TimeStamp Ellapsed() const

    70   {

    71     TimeStamp t(NULL);

    72     return t-*this;

    73   }

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

    77   double getUserTime() const

    78   {

    79     return double(ts.tms_utime)/sysconf(_SC_CLK_TCK);

    80   }

    81   double getSystemTime() const

    82   {

    83     return double(ts.tms_stime)/sysconf(_SC_CLK_TCK);

    84   }

    85   double getCUserTime() const

    86   {

    87     return double(ts.tms_cutime)/sysconf(_SC_CLK_TCK);

    88   }

    89   double getCSystemTime() const

    90   {

    91     return double(ts.tms_cstime)/sysconf(_SC_CLK_TCK);

    92   }

    93 };

    95 class Timer

    96 {

    97   TimeStamp start_time;

    99   void _reset() {start_time.stamp();}

   101 public:

   102   Timer() {_reset();}

   104   operator TimeStamp ()

   105   {

   106     TimeStamp t;

   107     t.stamp();

   108     return t-start_time;

   109   }

   111   TimeStamp reset()

   112   {

   113     TimeStamp t(start_time);

   114     _reset();

   115     return start_time-t;

   116   }

   117 };

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

   120 {

   121   long cls = sysconf(_SC_CLK_TCK);

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

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

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

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

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

   127   return os;

   128 }

   130 #endif //TIME_MEASURE_H

author	alpar
	Sun, 21 Mar 2004 14:59:51 +0000
changeset 224	5bc1c83257f8
parent 124	8d24100ad408
child 259	509ba9f136d2
permissions	-rw-r--r--