Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl: the Markov chain saw

Comment on

( #3333=superdoc: print w/replies, xml ) Need Help??

Frequently, event handlers are done in a callback style with very little in the way of resources. (For example, in interrupt handlers, the interrupts may be disabled during the handler body, preventing other interrupt-driven events from being noticed.) So typically, you store the request with as little processing as possible, to allow the event system to get back to its job of collecting events.

Then your other thread can pull events off the queue and process them. That way, if you have a rapid flurry of events, they'll stack up in the queue. If you tried handling them in the event handler, the rapid flurry of events could be lost.

Please note that this is a "hand wavy" explanation because there are many similar systems in which the implementation details are different, and I don't know anything about the Linux::Inotify2 package, so I can't comment on any specifics.


In reply to Re^3: How to wait for events, and not lose any, while processing them ? by roboticus
in thread How to wait for events, and not lose any, while processing them ? by Eyck

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, 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, 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.
  • Log In?

    What's my password?
    Create A New User
    and all is quiet...

    How do I use this? | Other CB clients
    Other Users?
    Others contemplating the Monastery: (5)
    As of 2018-05-27 06:18 GMT
    Find Nodes?
      Voting Booth?