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Re: Waking threads that do periodic checks

by BrowserUk (Pope)
on Sep 25, 2011 at 06:17 UTC ( #927711=note: print w/replies, xml ) Need Help??


in reply to Waking threads that do periodic checks

This is easy to do, though I agree there may well be better ways of solving the real problem:

#! perl -slw use strict; use threads; use threads::shared; my $quit :shared = 0; $SIG{INT} = sub { print 'SIGINT'; $quit = 1; }; async { while( not $quit ) { my $wakeup = time() + 60 * 60; print( $quit ), sleep 1 while not $quit and time() < $wakeup; ## Do the hourly task; } }->detach; sleep 1 while not $quit; __END__ c:\test>junk60 0 0 SIGINT

The cpu cost of waking once per second is nominal.


Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

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[Corion]: Meh. I think I have now the parts down that I want from a simple Javascript frontend for single-page- applications with a aPerl backend. But it seems that all Javascript templating modules either don't support two-way binding (which would be nice) or ...
[Corion]: ... don't support server-side precompilation (which means the client has to compile all templates to Javascript themselves), or are giant frameworks that expect to do everything (which is not what I want)
[Corion]: I feel that there is a talk somewhere in there, either about the structure and parts, or how I used several parts to get a complete whole.
[Corion]: Maybe I can still find something that is compatible with handlebars.js (which has JS precompilation) but allows for two-way data binding (which is great for the UI)

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