recurring timer in a standalone script

[Bhaskar Karambelkar]

I've a script which does some long running computations, and updates certain counter variables from time to time.

Ideally I would like to display these values from time to time. So here's what I tried

use Data::Dumper;

use Mojo::IOLoop;

my $loop = Mojo::IOLoop->singleton;

my $counterRef = {COUNTER1 => 0, COUNTER2 =>0,...} ;

$loop->recurring(1, sub { Dumper($counterRef) });

#$loop->start;

# Begin long running computation

$loop->end;

The problem is $loop->start is a blocking call. So I'm stuck, how do I start the loop w/o blocking ?

[sri]

> The problem is $loop->start is a blocking call. So I'm stuck, how do I
> start the loop w/o blocking ?

You can't, that's not how event loops work.

--
sebastian

[Bhaskar Karambelkar]

Yep I realized that. Any tips on how I might go about in achieving what I need to do ?

[anton.s...@yandex.ru]

You can put long running task into $loop->timer( 0 => sub { <here> } )

вторник, 18 июня 2013 г., 0:30:25 UTC+4 пользователь Bhaskar Karambelkar написал:

[Sebastian Riedel]

> You can put long running task into $loop->timer( 0 => sub { <here> } )

I think you meant to say "You can split your long running task into many smaller ones and put them <here>, one after another.".

--
Sebastian Riedel
http://twitter.com/kraih
http://mojolicio.us

[Bhaskar Karambelkar]

Yes I think you are right.

Coz if I try

my $loop = Mojo::IOLoop->singleton;

my $recID = $loop->recurring(1,sub { displayCounters; });

my $tID = $loop->timer(0,sub { <The whole of long running task>; $loop->stop });

$loop->start

It doesn't work. The timer task runs blocking, and the recurring task is never invoked.

I thought both the timer and the recurring tasks would run asynchronously in parallel.

thanks

Bhaskar