This alternative should print a line only if it succeeds in what is doing as job. That way, there is a real significance of the spinning wheel (sort of:). When the job is not succeeding, the wheel should stay calm (panic!).

use strict;
use threads qw[ async yield ];
use threads::shared;

my $ready : shared = 0;
my $isOk : shared = 0;

async{
        local $|=1;
        while( !$ready ) {
                do{
                        select undef, undef, undef, 0.2;
                        printf "\r ($_)" if ($isOk)
                } for qw[ / - \ | * ];
        }
        print "\rReady";
        $ready = 0;
}->detach;

for ( 1 .. 10 ) {

        ## Busy, busy, busy
        $isOk=1;
        sleep 1;
        $isOk=0;
}

$isOk=0;

$ready = 1;
yield while $ready;

[download]

.{\('v')/}
_`(___)' __________________________

In reply to Re^2: Spining "stick" by chanio
in thread Spining "stick" by chiburashka

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.