StopWatch_test.cc File Reference

Test for the StopWatch class. More...

#include "larcorealg/TestUtils/StopWatch.h"
#include <chrono>
#include <ratio>
#include <thread>
#include <iostream>

Go to the source code of this file.

Functions
void	wait (std::chrono::milliseconds dur)
int	main (int, char **)

Detailed Description

Test for the StopWatch class.

Author

Gianluca Petrillo (petri.nosp@m.llo@.nosp@m.fnal..nosp@m.gov)

Date

July 3, 2016

See Also

StopWatch.h

This test instantiates a stopwatch and makes some queries.

It is not an actual test in that there is no automatic verification of the results (which would be somehow problematic given that times are not completely reproducible).

Definition in file StopWatch_test.cc.

Function Documentation

int main	(	int	,
		char **
	)

Definition at line 32 of file StopWatch_test.cc.

                          {

  std::chrono::milliseconds WaitFor { 250 };

  std::cout << "Creating stop watch..." << std::endl;
  testing::StopWatch<std::chrono::duration<double>, std::chrono::system_clock> timer;
  std::cout << " - elapsed time so far: " << timer.elapsed() << " s; partial time: " << timer.partial() << " s" << std::endl;

  wait(WaitFor);
  std::cout << " - elapsed time so far: " << timer.elapsed() << " s (" << timer.elapsed<std::micro>() << " us); partial time: " << timer.partial<std::micro>() << " us" << std::endl;

  std::cout << "Stopping watch" << std::endl;
  timer.stop();
  wait(WaitFor);
  std::cout << " - elapsed time so far: " << timer.elapsed() << " s (" << timer.elapsed<std::chrono::microseconds>() << " us); partial time: " << timer.partial<std::chrono::microseconds>() << " us" << std::endl;

  std::cout << "Resuming watch" << std::endl;
  timer.resume();
  wait(WaitFor);
  std::cout << " - elapsed time so far: " << timer.elapsed() << " s (" << timer.elapsed<std::chrono::seconds>() << " s); partial time: " << timer.partial<std::chrono::seconds>() << " s"  << std::endl;

  std::cout << "Restarting watch" << std::endl;
  timer.restart();
  wait(WaitFor);
  std::cout << " - elapsed time so far: " << timer.elapsed() << " s (" << timer.elapsed<std::chrono::milliseconds>() << " ms); partial time: " << timer.partial<std::chrono::milliseconds>() << " ms"  << std::endl;


  return 0;
} // main()

void wait

(

std::chrono::milliseconds

dur

)

Definition at line 26 of file StopWatch_test.cc.

                                     {
  std::cout << " <waiting for " << dur.count() << " ms>" << std::endl;
  std::this_thread::sleep_for(dur);
} // wait()