author | marci |
Sat, 24 Apr 2004 12:44:41 +0000 | |
changeset 389 | 770cc1f4861f |
parent 324 | c8b0ad782bda |
child 425 | 4fbe868c1fb4 |
permissions | -rw-r--r-- |
marci@73 | 1 |
// -*- c++ -*- |
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#ifndef HUGO_TIME_MEASURE_H |
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#define HUGO_TIME_MEASURE_H |
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|
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#include <sys/time.h> |
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#include <sys/times.h> |
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#include <fstream> |
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#include <iostream> |
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#include <unistd.h> |
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|
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namespace hugo { |
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|
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// double currTime() { |
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// timeval tv; |
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// //timezone tz; |
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// gettimeofday(&tv, 0); |
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// return double(tv.tv_sec)+double(tv.tv_usec)/1000000.0; |
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// } |
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|
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/// Class to store (cpu)time instances. |
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|
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/// This class stores five time values. |
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/// - a real time |
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/// - a user cpu time |
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/// - a system cpu time |
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/// - a user cpu time of children |
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/// - a system cpu time of children |
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/// |
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/// TimeStamp's can be added to or substracted from each other and |
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/// they can be push to a stream. |
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|
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class TimeStamp |
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{ |
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tms ts; |
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double real_time; |
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|
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public: |
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|
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tms &getTms() {return ts;} |
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const tms &getTms() const {return ts;} |
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double getRealTime() const {return real_time;} |
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///Read the current time values of the process. |
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void stamp() |
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{ |
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timeval tv; |
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times(&ts); |
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gettimeofday(&tv, 0);real_time=tv.tv_sec+double(tv.tv_usec)/1e6; |
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} |
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|
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/// Constructor initializing with zero. |
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TimeStamp() |
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{ ts.tms_utime=ts.tms_stime=ts.tms_cutime=ts.tms_cstime=0; real_time=0;} |
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///Constructor initializing with the current time values of the process. |
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TimeStamp(void *) { stamp();} |
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|
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TimeStamp &operator+=(const TimeStamp &b) |
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{ |
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ts.tms_utime+=b.ts.tms_utime; |
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ts.tms_stime+=b.ts.tms_stime; |
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ts.tms_cutime+=b.ts.tms_cutime; |
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ts.tms_cstime+=b.ts.tms_cstime; |
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real_time+=b.real_time; |
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return *this; |
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} |
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TimeStamp operator+(const TimeStamp &b) const |
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{ |
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TimeStamp t(*this); |
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return t+=b; |
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} |
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TimeStamp &operator-=(const TimeStamp &b) |
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{ |
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ts.tms_utime-=b.ts.tms_utime; |
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ts.tms_stime-=b.ts.tms_stime; |
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ts.tms_cutime-=b.ts.tms_cutime; |
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ts.tms_cstime-=b.ts.tms_cstime; |
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real_time-=b.real_time; |
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return *this; |
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} |
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TimeStamp operator-(const TimeStamp &b) const |
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{ |
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TimeStamp t(*this); |
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return t-=b; |
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} |
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|
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///The time ellapsed since the last call of stamp() |
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TimeStamp ellapsed() const |
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{ |
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TimeStamp t(NULL); |
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return t-*this; |
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} |
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|
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friend std::ostream& operator<<(std::ostream& os,const TimeStamp &t); |
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|
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double getUserTime() const |
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{ |
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return double(ts.tms_utime)/sysconf(_SC_CLK_TCK); |
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} |
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double getSystemTime() const |
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{ |
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return double(ts.tms_stime)/sysconf(_SC_CLK_TCK); |
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} |
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double getCUserTime() const |
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{ |
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return double(ts.tms_cutime)/sysconf(_SC_CLK_TCK); |
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} |
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double getCSystemTime() const |
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{ |
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return double(ts.tms_cstime)/sysconf(_SC_CLK_TCK); |
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} |
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}; |
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|
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///Class measuring the cpu time and real time usage of the process. |
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class Timer |
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{ |
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TimeStamp start_time; |
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|
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void _reset() {start_time.stamp();} |
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|
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public: |
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///Constructor. It starts with zero time counters. |
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Timer() {_reset();} |
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|
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///Computes the ellapsed time. |
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|
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///This conversion computes the ellapsed time |
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///since the construction of \c t or since |
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///the last \c t.reset(). |
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operator TimeStamp () |
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{ |
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TimeStamp t; |
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t.stamp(); |
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return t-start_time; |
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} |
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|
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///Resets the time counters. |
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TimeStamp reset() |
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{ |
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TimeStamp t(start_time); |
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_reset(); |
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return start_time-t; |
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} |
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}; |
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|
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///Prints the time counters. |
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inline std::ostream& operator<<(std::ostream& os,const TimeStamp &t) |
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{ |
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long cls = sysconf(_SC_CLK_TCK); |
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os << "u: " << double(t.getTms().tms_utime)/cls << |
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"s, s: " << double(t.getTms().tms_stime)/cls << |
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"s, cu: " << double(t.getTms().tms_cutime)/cls << |
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"s, cs: " << double(t.getTms().tms_cstime)/cls << |
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"s, real: " << t.getRealTime() << "s"; |
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return os; |
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} |
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|
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} //namespace hugo |
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|
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#endif //HUGO_TIME_MEASURE_H |