| Description: |
I often run scripts that have to run for a while and that do not output anything. So I like to see how they are doing, if they are just sitting there waiting for something to happen, or maybe stuck in an infinite loop.
So I use this subroutine to display an indicator of how many times I have been through my main loop on STDOUT.
Its used this way:
while(...)
{ # whatever you have to do
progress();
}
As I use in various situations the main loop can be run any time from a few hundred to several tens of thousand times, so you can pass a parameter or change the DEFAULT_STEP constant to display a dot for every n loops. After 10 dots a space is printed, and after 50 a new line (those values can also be changed).
One last thing: if you want to see the dots displayed as soon as they are generated don't forget to unbuffer the output, for example with $|=1;
Oh and if the features of this progress indicator are not what you are looking for, here is a list of previous nodes on that subject:
|
{ use constant DEFAULT_STEP => 100; # a DOT is printed every DEFAULT_S
+TEP call
use constant LINE => 50; # nb of DOT per line
use constant BLOCK => 10; # a SPACE is printed after BLOCK D
+OTs
use constant DOT => '.'; # probably no need to change this
use constant SPACE => ' '; # probably no need to change this
my( $i, $j);
sub progress
{ my $step= shift || DEFAULT_STEP;
$i++;
if( $i == $step)
{ $i=0;
print STDOUT DOT;
$j++;
unless( $j % BLOCK)
{ print STDOUT SPACE;
if( $j == LINE)
{ $j=0;
print STDOUT "\n";
}
}
}
}
}
|
