Linux C + + statistical function call time

Write a small program to count function call time, simple and straightforward to see the code, there are three files, FunTimer.h, FunTimer.cpp, FunTimerMan.cpp are as follows:

FunTimer.h file

#ifndef _funtimer_h#define _funtimer_h#include <iostream> #include <sys/time.h> #include <string> Using namespace Std;class funtimer{public        :                Funtimer ();                Funtimer (string funname);                ~funtimer ();        Private:                 string funname;                Timeval  _start;               Timeval  _end;};/ * * Method One # include <iostream> #include <ctime> #include <string>using namespace Std;class funtimer{public : Funtimer (); Funtimer (String funname), ~funtimer ();p rivate:                 string funname;clock_t _start;clock_t _end;}; */#endif

FunTimer.cpp File

#include "FunTimer.h" Funtimer::funtimer () {gettimeofday (&_start,null);} Funtimer::funtimer (String funname) {        this->funname=funname;gettimeofday (&_start,null);} Funtimer::~funtimer () {        gettimeofday (&_end,null); float timeuse = 1000000 * (_end.tv_sec-_start.tv_sec) + (_ End.tv_usec-_start.tv_usec);    Timeuse/= 1000000;        cout<<endl;cout<<this->funname<< ":" <<timeuse <<endl;} /** method One Funtimer::funtimer () {_start=clock ();} Funtimer::funtimer (String funname) {this->funname=funname;        _start=clock ();} Funtimer::~funtimer () {_end=clock ();cout<<this->funname<< (double) (_end-_start)/CLOCKS_PER_SEC <<endl;} */

FunTimerMain.cpp file, for testing

#include <iostream> #include "FunTimer.h" using namespace Std;void Testprintfun () {Funtimer Mfuntimer (__function_ _);        for (int i=0;i<1000;i++)        {                cout<< "";        }} void TestPrintFun2 () {        funtimer mfuntimer (__function__);        for (int i=0;i<2000;i++)        {                cout<< "";        }} int main (int argc, char* argv[]) {Funtimer mfuntimer (__function__); Testprintfun (); testPrintFun2 ();/**clock_t start = Clock ();  Testprintfun (); clock_t End   = Clock ();  cout<<endl;    cout<< (End-start) <<endl;       */        return 0;}

Test method: Add funtimer mfuntimer (__function__) to the first sentence of the function;

Compile to see the results as follows:

Linux C + + statistical function call time