BiometricEvaluation::Time Namespace Reference

Support for time and timers. More...

Classes
class	Timer
	This class can be used by applications to report the amount of time a block of code takes to execute. More...
class	Watchdog
	A Watchdog object can be used by applications to limit the amount of processing time taken by a block of code. More...

Functions
std::string	getCurrentTime ()
std::string	getCurrentDate ()
std::string	getCurrentDateAndTime ()
std::string	getCurrentCalendarInformation (const std::string &formatString)
	Obtain customized calendar information. More...
std::string	put_time (const struct tm *tmb, const char *fmt)
	Manual implementation of std::put_time. More...
std::ostream &	operator<< (std::ostream &s, const Timer &timer)
	Output stream operator overload for Timer. More...
void	WatchdogSignalHandler (int signo, siginfo_t *info, void *uap)

Variables
const uint64_t	OneSecond = 1000000
const uint64_t	OneHalfSecond = 500000
const uint64_t	OneQuarterSecond = 250000
const uint64_t	OneEighthSecond = 125000
const int	NanosecondsPerMicrosecond = 1000
const int	MicrosecondsPerSecond = 1000000
const int	MicrosecondsPerMillisecond = 1000
const int	MillisecondsPerSecond = 1000

Detailed Description

Support for time and timers.

The Time package gathers all timing relating matters, such as Timers, Watchdog timers, etc. Time values are in microsecond units.

Function Documentation

getCurrentTime()

std::string BiometricEvaluation::Time::getCurrentTime

(

)

Returns

The current ISO 8601 time as a string.

getCurrentDate()

std::string BiometricEvaluation::Time::getCurrentDate

(

)

Returns

The current ISO 8601 date as a string.

getCurrentDateAndTime()

std::string BiometricEvaluation::Time::getCurrentDateAndTime

(

)

Returns

The standard locale current date and time as a string.

getCurrentCalendarInformation()

std::string BiometricEvaluation::Time::getCurrentCalendarInformation

(

const std::string &

formatString

)

Obtain customized calendar information.

Parameters

formatString

A C++11 put_time-compatible format string.

Returns

The current calendar information formatted as specified in formatString.

Note

Return value is undefined if format string is invalid.

put_time()

std::string BiometricEvaluation::Time::put_time	(	const struct tm *	tmb,
		const char *	fmt
	)

Manual implementation of std::put_time.

Note

Exists because g++ does not currently implement put_time (http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54354)

operator<<()

std::ostream & BiometricEvaluation::Time::operator<<	(	std::ostream &	s,
		const Timer &	timer
	)

Output stream operator overload for Timer.

Parameters

s	Stream to append.
timer	Timer whose elapsed time in microseconds should be appended to s.

Returns

s with value of elapsedStr() appended.

Exceptions

BE::Error::StrategyError

Propagated from elapsedStr().

WatchdogSignalHandler()

void BiometricEvaluation::Time::WatchdogSignalHandler	(	int	signo,
		siginfo_t *	info,
		void *	uap
	)

Variable Documentation

OneSecond

const uint64_t BiometricEvaluation::Time::OneSecond = 1000000

Definition at line 29 of file be_time.h.

OneHalfSecond

const uint64_t BiometricEvaluation::Time::OneHalfSecond = 500000

Definition at line 30 of file be_time.h.

OneQuarterSecond

const uint64_t BiometricEvaluation::Time::OneQuarterSecond = 250000

Definition at line 31 of file be_time.h.

OneEighthSecond

const uint64_t BiometricEvaluation::Time::OneEighthSecond = 125000

Definition at line 32 of file be_time.h.

NanosecondsPerMicrosecond

const int BiometricEvaluation::Time::NanosecondsPerMicrosecond = 1000

Definition at line 33 of file be_time.h.

MicrosecondsPerSecond

const int BiometricEvaluation::Time::MicrosecondsPerSecond = 1000000

Definition at line 34 of file be_time.h.

MicrosecondsPerMillisecond

const int BiometricEvaluation::Time::MicrosecondsPerMillisecond = 1000

Definition at line 35 of file be_time.h.

MillisecondsPerSecond

const int BiometricEvaluation::Time::MillisecondsPerSecond = 1000

Definition at line 36 of file be_time.h.