lemon-0.x: src/work/marci/time_measure.h@67253d52b284

     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 public:

    22   tms &getTms() {return ts;}

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

    25   void stamp() {times(&ts);}

    26   TimeStamp() { ts.tms_utime=ts.tms_stime=ts.tms_cutime=ts.tms_cstime=0;}

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

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

    30   {

    31     ts.tms_utime+=b.ts.tms_utime;

    32     ts.tms_stime+=b.ts.tms_stime;

    33     ts.tms_cutime+=b.ts.tms_cutime;

    34     ts.tms_cstime+=b.ts.tms_cstime;

    35     return *this;

    36   }

    37   TimeStamp operator+(const TimeStamp &b) const

    38   {

    39     TimeStamp t(*this);

    40     return t+=b;

    41   }

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

    43   {

    44     ts.tms_utime-=b.ts.tms_utime;

    45     ts.tms_stime-=b.ts.tms_stime;

    46     ts.tms_cutime-=b.ts.tms_cutime;

    47     ts.tms_cstime-=b.ts.tms_cstime;

    48     return *this;

    49   }

    50   TimeStamp operator-(const TimeStamp &b) const

    51   {

    52     TimeStamp t(*this);

    53     return t-=b;

    54   }

    56   TimeStamp Ellapsed() const

    57   {

    58     TimeStamp t(NULL);

    59     return t-*this;

    60   }

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

    64 };

    66 class Timer

    67 {

    68   TimeStamp start_time;

    70 public:

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

    72   Timer() {reset();}

    74   operator TimeStamp ()

    75   {

    76     TimeStamp t;

    77     t.stamp();

    78     return t-start_time;

    79   }

    80 };

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

    83 {

    84   long cls = sysconf(_SC_CLK_TCK);

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

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

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

    88     "s, cs: " << double(t.getTms().tms_cstime)/cls << "s ]";

    89   return os;

    90 }

    92 #endif //TIME_MEASURE_H

author	alpar
	Sun, 22 Feb 2004 15:17:58 +0000
changeset 117	67253d52b284
parent 73	1b4a25e49222
child 118	38e16c594a4f
permissions	-rw-r--r--