timer Class Reference

Class for cpu time benchmarking. More...

Detailed Description

Class for cpu time benchmarking.

Usage:

    timer t;

    // start the timer
    t.start();

    sleep(1);

    // get the elapsed real time and cpu time without stop
    BOOST_REQUIRE_CLOSE(t.getwct(),1.0,10.0);
    BOOST_REQUIRE_SMALL(t.getcputime(),10.0);

    sleep(1);

    // stop the timer
    t.stop();

    sleep(1);

    // unusefull
    t.stop();

    // get the cpu time and real time
    t.getcputime();
    t.getwct();

    // get the elapsed real time and cpu time without stop
    BOOST_REQUIRE_CLOSE(t.getwct(),2.0,10.0);
    BOOST_REQUIRE_SMALL(t.getcputime(),10.0);

    t.reset();

    BOOST_REQUIRE_CLOSE(t.getwct(),0.0,10.0);
    BOOST_REQUIRE_SMALL(t.getcputime(),10.0);

Definition at line 25 of file timer.hpp.

#include <timer.hpp>

Public Member Functions
	timer ()
	Default constructor.
void	start ()
	Start the timer. More...
void	stop ()
	Stop the timer. More...
double	getwct ()
	Return the elapsed real time. More...
double	getcputime ()
	Return the cpu time. More...
void	reset ()
	Reset the timer. More...

Private Member Functions
void	check ()

Private Attributes
bool	running
	Flag that indicate if the timer is running or not.
struct timespec	tsstart
	starting time
clock_t	cstart
	start time from epoch
struct timespec	tsstop
clock_t	cstop
	stop time from epoch

Member Function Documentation

double timer::getcputime ( )

inline

Return the cpu time.

Definition at line 120 of file timer.hpp.

double timer::getwct ( )

inline

Return the elapsed real time.

Definition at line 108 of file timer.hpp.

void timer::reset ( )

inline

Reset the timer.

Definition at line 132 of file timer.hpp.

void timer::start ( )

inline

Start the timer.

Definition at line 73 of file timer.hpp.

void timer::stop ( )

inline

Stop the timer.

Definition at line 97 of file timer.hpp.

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The documentation for this class was generated from the following file:

• openfpm_data/src/timer.hpp