|o||Create an instance of Time::Progress, specifying min and max count values.|
|o||At the head of the loop, you call the report() method with a format specifier and the iteration count, and get back a string that should be displayed.|
If you display to STDOUT, then remember to enable auto-flushing:
The shortest time interval that can be measured is 1 second.
my $p = Time::Progress->new(%options);
You can configure the instance with the following parameters:
min Sets the <B>minB> attribute, as described in the attr section below. max Sets the <B>maxB> attribute, as described in the attr section below. smoothing If set to a true value, then the estimated time remaining is smoothed in a simplistic way: if the time remaining ever goes up, by less than 10% of the previous estimate, then we just stick with the previous estimate. This prevents flickering estimates. By default this feature is turned off. smoothing_delta Sets smoothing delta parameter. Default value is 0.1 (i.e. 10%). See smoothing parameter for more details.
Restarts the timer and clears the stop mark. Optionally restart() may act also as attr() for setting attributes:
$p->restart( min => 1, max => 5 );
is the same as:
$p->attr( min => 1, max => 5 ); $p->restart();
If you need to count things, you can set just max attribute since min is already set to 0 when object is constructed by new():
$p->restart( max => 42 );
Sets the stop mark. This is only useful if you do some work, then finish, then do some work that shouldnt be timed and finally report. Something like:
$p->restart; # do some work here... $p->stop; # do some post-work here print $p->report; # `post-work will not be timed
Stop is useless if you want to report time as soon as work is finished like:
$p->restart; # do some work here... print $p->report;
Sets and returns internal values for attributes. Available attributes are:
<B>attrB> returns array of the set attributes:
min This is the min value of the items that will follow (used to calculate estimated finish time) max This is the max value of all items in the even (also used to calculate estimated finish time) format This is the default <B>reportB> format. It is used if <B>reportB> is called without parameters.
my ( $new_min, $new_max ) = $p->attr( min => 1, max => 5 );
If you want just to get values use undef:
my $old_format = $p->attr( format => undef );
This is the most complex method in this package :)
The expected arguments are:
$p->report( format, [current_item] );
format is string that will be used for the result string. Recognized special sequences are:
Parameters can be ommited and then default format set with <B>attrB> will be used.
%l elapsed seconds %L elapsed time in minutes in format MM:SS %e remaining seconds %E remaining time in minutes in format MM:SS %p percentage done in format PPP.P% %f estimated finish time in format returned by <B>B>localtime()<B>B> %b %B progress bar which looks like:
%b takes optional width:
%40b -- 40-chars wide bar %9b -- 9-chars wide bar %b -- 79-chars wide bar (default)
Sequences L, l, E and e can have width also:
%10e %5l ...
Estimate time calculations can be used only if min and max values are set (see <B>attrB> method) and current item is passed to <B>reportB>! if you want to use the default format but still have estimates use it like this:
$p->format( undef, 45 );
If you dont give current item (step) or didnt set proper min/max value then all estimate sequences will have value n/a.
You can freely mix reports during the same event.
Returns the time elapsed, in seconds. This help function, and those described below, take one argument: the current item number.
Returns an estimate of the time remaining, in seconds.
Returns elapsed time as a formatted string:
"elapsed time is MM:SS min.\n"
Returns estimated remaining time, as a formatted string:
"remaining time is MM:SS min.\n"
# $c is current element (step) reached # for the examples: min = 0, max = 100, $c = 33.3 print $p->report( "done %p elapsed: %L (%l sec), ETA %E (%e sec)\n", $c ); # prints: # done 33.3% elapsed time 0:05 (5 sec), ETA 0:07 (7 sec) print $p->report( "%45b %p\r", $c ); # prints: # ###############.............................. 33.3% print $p->report( "done %p ETA %f\n", $c ); # prints: # done 33.3% ETA Sun Oct 21 16:50:57 2001
The first thing you need to know about Smart::Comments is that it was written by Damian Conway, so you should expect to be a little bit freaked out by it. It looks for certain format comments in your code, and uses them to display progress messages. Includes support for progress meters.
Progress::Any separates the calculation of stats from the display of those stats, so you can have different back-ends which display progress is different ways. There are a number of separate back-ends on CPAN.
Term::ProgressBar displays a progress meter to a standard terminal.
Term::ProgressBar::Simple provides a simple interface where you get a $progress object that you can just increment in a long-running loop. It builds on Term::ProgressBar::Quiet, so displays nothing when not running interactively.
Term::Activity displays a progress meter with timing information, and two different skins.
Text::ProgressBar is another customisable progress meter, which comes with a number of widgets for display progress information in different ways.
ProgressBar::Stack handles the case where a long-running process has a number of sub-processes, and you want to record progress of those too.
String::ProgressBar provides a simple progress bar, which shows progress using a bar of ASCII characters, and the percentage complete.
Term::Spinner is simpler than most of the other modules listed here, as it just displays a spinner to the terminal. This is useful if you just want to show that something is happening, but cant predict how many more operations will be required.
Term::Pulse shows a pulsed progress bar in your terminal, using a child process to pulse the progress bar until your job is complete.
Term::YAP a fork of Term::Pulse.
Term::StatusBar is another progress bar module, but it hasnt seen a release in the last 12 years.
Vladi Belperchinov-Shabanski Cade
This software is copyright (c) 2001-2015 by Vladi Belperchinov-Shabanski <firstname.lastname@example.org>.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.
|perl v5.20.3||TIME::PROGRESS (3)||2015-12-07|