An os_stopwatch supports traditional stopwatch facilities and is useful for timing operations and general benchmarking. Although a stopwatch stores its start and stop times to microsecond levels, the inherent delays due to operating system paging and context switching tend to make stopwatches accurate only to 1 second.

Declaration


  #include <ospace/time/stopwtch.h>

class os_stopwatch

Interface

Constructor

os_stopwatch()

Constructs a reset stopwatch that is not yet running.

Constructor

os_stopwatch( const os_stopwatch& stopwatch )

Constructs a copy of stopwatch .

os_stopwatch& operator=( const os_stopwatch& stopwatch )

Assigns stopwatch from stopwatch .

bool operator==( const os_stopwatch& stopwatch ) const

Returns true if stopwatch is in the same state as stopwatch .

lap

os_time_period lap() const

Returns the current accumulated time period without affecting whether or not the stopwatch is running.

(os_time_period)

operator os_time_period() const

Returns a time period.

print

void print( ostream& stream ) const

Prints to stream .

reset

void reset()

Resets the stopwatch to a time period of zero seconds and stops the stopwatch if it is running.

running

bool running() const

Returns true if the stopwatch is running.

start

void start()

Starts the stopwatch.

stop

void stop()

Stops the stopwatch.

Universal Streaming Service


  #include <ospace/uss/time.h>

os_bstream& operator<<( os_bstream& stream , const os_stopwatch& watch )

Writes watch to stream .

os_bstream& operator>>( os_bstream& stream , os_stopwatch& watch )

Reads watch from stream .

stopwatch

Library

Declaration

Interface

Non-Member Functions

Universal Streaming Service