r126:e1dd2a70737c
Mon, 14 Apr 2008 10:46:41
[Not Reviewed]
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@@ -23,12 +23,16 @@ |
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///\file |
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///\brief Tools for measuring cpu usage |
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#ifdef WIN32 |
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#include <windows.h> |
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#include <cmath> |
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#else |
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#include <sys/times.h> |
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#include <sys/time.h> |
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#endif |
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#include <sys/time.h> |
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#include <fstream> |
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#include <iostream> |
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#include <unistd.h> |
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namespace lemon {
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@@ -54,25 +58,14 @@ |
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class TimeStamp |
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{
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struct rtms |
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{
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double tms_utime; |
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double tms_stime; |
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double tms_cutime; |
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double tms_cstime; |
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rtms() {}
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rtms(tms ts) : tms_utime(ts.tms_utime), tms_stime(ts.tms_stime), |
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tms_cutime(ts.tms_cutime), tms_cstime(ts.tms_cstime) {}
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}; |
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rtms ts; |
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double real_time; |
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double utime; |
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double stime; |
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double cutime; |
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double cstime; |
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double rtime; |
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rtms &getTms() {return ts;}
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const rtms &getTms() const {return ts;}
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void _reset() {
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ts.tms_utime = ts.tms_stime = ts.tms_cutime = ts.tms_cstime = 0; |
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real_time = 0; |
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utime = stime = cutime = cstime = rtime = 0; |
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} |
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public: |
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@@ -80,11 +73,40 @@ |
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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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#ifndef WIN32 |
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timeval tv; |
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tms _ts; |
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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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ts=_ts; |
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gettimeofday(&tv, 0); |
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rtime=tv.tv_sec+double(tv.tv_usec)/1e6; |
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tms ts; |
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double tck=sysconf(_SC_CLK_TCK); |
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times(&ts); |
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utime=ts.tms_utime/tck; |
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stime=ts.tms_stime/tck; |
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cutime=ts.tms_cutime/tck; |
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cstime=ts.tms_cstime/tck; |
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#else |
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static const double ch = 4294967296.0e-7; |
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static const double cl = 1.0e-7; |
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FILETIME system; |
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GetSystemTimeAsFileTime(&system); |
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rtime = ch * system.dwHighDateTime + cl * system.dwLowDateTime; |
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FILETIME create, exit, kernel, user; |
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if (GetProcessTimes(GetCurrentProcess(),&create, &exit, &kernel, &user)) {
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utime = ch * user.dwHighDateTime + cl * user.dwLowDateTime; |
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stime = ch * kernel.dwHighDateTime + cl * kernel.dwLowDateTime; |
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cutime = 0; |
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cstime = 0; |
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} else {
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rtime = 0; |
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utime = 0; |
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stime = 0; |
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cutime = 0; |
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cstime = 0; |
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} |
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#endif |
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} |
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/// Constructor initializing with zero |
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@@ -99,11 +121,11 @@ |
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///\e |
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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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utime+=b.utime; |
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stime+=b.stime; |
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cutime+=b.cutime; |
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cstime+=b.cstime; |
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rtime+=b.rtime; |
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return *this; |
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} |
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///\e |
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@@ -115,11 +137,11 @@ |
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///\e |
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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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utime-=b.utime; |
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stime-=b.stime; |
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cutime-=b.cutime; |
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cstime-=b.cstime; |
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rtime-=b.rtime; |
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return *this; |
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} |
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///\e |
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@@ -131,11 +153,11 @@ |
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///\e |
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TimeStamp &operator*=(double b) |
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{
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ts.tms_utime*=b; |
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ts.tms_stime*=b; |
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ts.tms_cutime*=b; |
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ts.tms_cstime*=b; |
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utime*=b; |
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stime*=b; |
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cutime*=b; |
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cstime*=b; |
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rtime*=b; |
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return *this; |
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} |
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///\e |
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@@ -148,11 +170,11 @@ |
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///\e |
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TimeStamp &operator/=(double b) |
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{
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ts.tms_utime/=b; |
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ts.tms_stime/=b; |
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ts.tms_cutime/=b; |
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ts.tms_cstime/=b; |
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utime/=b; |
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stime/=b; |
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cutime/=b; |
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cstime/=b; |
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rtime/=b; |
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return *this; |
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} |
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///\e |
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@@ -173,25 +195,31 @@ |
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///Gives back the user time of the process |
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double userTime() const |
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{
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return |
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return utime; |
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} |
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///Gives back the system time of the process |
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double systemTime() const |
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{
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return |
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return stime; |
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} |
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///Gives back the user time of the process' children |
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///\note On <tt>WIN32</tt> platform this value is not calculated. |
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/// |
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double cUserTime() const |
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{
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return |
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return cutime; |
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} |
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///Gives back the user time of the process' children |
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///\note On <tt>WIN32</tt> platform this value is not calculated. |
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/// |
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double cSystemTime() const |
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{
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return |
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return cstime; |
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} |
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///Gives back the real time |
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double realTime() const {return
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double realTime() const {return rtime;}
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}; |
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TimeStamp operator*(double b,const TimeStamp &t) |
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@@ -212,13 +240,14 @@ |
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/// \li \c cs: system cpu time of children, |
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/// \li \c real: real time. |
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/// \relates TimeStamp |
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/// \note On <tt>WIN32</tt> platform the cummulative values are not |
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/// calculated. |
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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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os << "u: " << t.userTime() << |
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"s, s: " << t.systemTime() << |
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"s, cu: " << t.cUserTime() << |
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"s, cs: " << t.cSystemTime() << |
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"s, real: " << t.realTime() << "s"; |
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return os; |
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} |
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@@ -404,11 +433,17 @@ |
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return operator TimeStamp().systemTime(); |
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} |
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///Gives back the ellapsed user time of the process' children |
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///\note On <tt>WIN32</tt> platform this value is not calculated. |
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/// |
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double cUserTime() const |
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{
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return operator TimeStamp().cUserTime(); |
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} |
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///Gives back the ellapsed user time of the process' children |
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///\note On <tt>WIN32</tt> platform this value is not calculated. |
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/// |
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double cSystemTime() const |
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{
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return operator TimeStamp().cSystemTime(); |
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