Author image Fred Moyer

NAME

 RHP::Timer - A high resolution timer abstraction

SYNOPSIS

 use RHP::Timer ();
 use My::Logger ();

 $logger = My::Logger->new;
 $timer  = RHP::Timer->new();

 # timing data from the point of the caller
 $timer->start('fizzbin');
 fizzbin(); # how fast is fizzbin?
 $logger->info(
     sprintf("Timing caller: %s %s %d, timer_name: %s, time: %s",
     @{$timer->checkpoint}));

 # or simpler
 $timer->start('foobin');
 foobin();
 $logger->info("pid $$ timer " . $timer->current . 
     " took " . $timer->stop . " seconds");

 # what was the last timing block?
 $logger->info("Last timing block " . $timer->current . 
     " took " . $timer->last_interval . " seconds");

DESCRIPTION

RHP::Timer is a wrapper around Time::HiRes. I wrote it because I needed some simple abstractions for timing programs to determine bottlenecks in running programs.

The goals of RHP::Timer is to be easy to use, accurate, and simple.

METHODS

new()
 $timer = RHP::Timer->new();

Constructor which takes no arguments and returns a timer object

start()
 $timer->start('fizzbin');

Starts the timer for 'fizzbin'

stop()
 $interval = $timer->stop;

Stops the last timer started, and returns the number of seconds between start and stop.

current()
 $timer_name = $timer->current();
 # $timer_name is 'fizzbin' from previous pod

Returns the name of the most recent timer started.

checkpoint()
 [ caller(), $timer_name, $interval ] = $timer->checkpoint();

Stops the current timer and returns an array reference containing caller() information, the name of the timer stopped, and the interval of the last timing run. Useful for passing to a logfile in sprintf or other format.

last_interval()
 $last_interval = $timer->last_interval;

Returns the last timing interval recorded by the timer object.

BUGS

None known yet. If you find any, or want a feature, email the author.

SEE ALSO

Time::HiRes(3)

AUTHOR

Fred Moyer <fred@redhotpenguin.com>

COPYRIGHT

Copyright 2007 Red Hot Penguin Consulting LLC

LICENSE

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.6 or, at your option, any later version of Perl 5 you may have available.