util::timestamp Class Reference

allow to keep track of time with a precision of a microseconds. More...

#include <util/timestamp.hpp>

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Detailed Description

allow to keep track of time with a precision of a microseconds.

The default constructors obtains the time with gettimeofday(2). Timestamps can be added or substracted and pushed to streams such as std::cout. It keeps track of time using integers so as not to lose precision. Typical use of the class are:

 timestamp t1; 
 foo();
 timestamp t2;
 std::cout<<"foo() took "<<t2-t1<<" seconds"<<std::endl;

or

 timestamp acc (0,0);
 while (some_condition()){ 
   do_stuff();
   timestamp t1;
   do_important_stuff();
   timestamp t2;
   acc += t2-t1;
   do_more_stuff();
 }
 std::cout<<"do_important_stuff() took "<<acc<<" seconds"<<std::endl;

List of all members.

Public Member Functions
	timestamp ()
	obtains time using gettimeofday(2)
	timestamp (int s, int us)
	provides time in seconds and microseconds
timestamp	operator+ (const timestamp &b)
timestamp	operator- (const timestamp &b)
const timestamp &	operator+= (const timestamp &b)
const timestamp &	operator-= (const timestamp &b)
Private Member Functions
void	fixme ()
	fix overflow after an add or a substract.
Private Attributes
int	seconds
int	microseconds
Friends
std::ostream &	operator<< (std::ostream &, const util::timestamp &)

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Constructor & Destructor Documentation

util::timestamp::timestamp

(

)

[inline]

obtains time using gettimeofday(2)

util::timestamp::timestamp	(	int	s,
		int	us
	)			[inline]

provides time in seconds and microseconds

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Member Function Documentation

void util::timestamp::fixme

(

)

[inline, private]

fix overflow after an add or a substract.

Notice it only fix the overflow of one unit.

timestamp util::timestamp::operator+

(

const timestamp &

b

)

[inline]

const timestamp& util::timestamp::operator+=

(

const timestamp &

b

)

[inline]

timestamp util::timestamp::operator-

(

const timestamp &

b

)

[inline]

const timestamp& util::timestamp::operator-=

(

const timestamp &

b

)

[inline]

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Friends And Related Function Documentation

std::ostream& operator<<	(	std::ostream &	out,
		const util::timestamp &	t
	)			[friend]

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Member Data Documentation

int util::timestamp::microseconds [private]

int util::timestamp::seconds [private]

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

• include/util/timestamp.hpp