in reply to Daemon problem with sleep()

Or instead of autoflushing, use a \n to force the flush. 
 ## Daemon Loop ##
  while (1) {
    print LOG "before sleep...\n";
    sleep(1);
    print LOG "after sleep...\n";
  }

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Re^2: Daemon problem with sleep()
by almut (Canon) on Dec 17, 2008 at 12:26 UTC

    I think newlines wouldn't help here, as the LOG handle isn't 'interactive' (such as when connected to a tty). Virtually anything else is by default block-buffered (as opposed to line-buffered in the interactive case).

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Re^2: Daemon problem with sleep()
by ikegami (Patriarch) on Dec 17, 2008 at 14:13 UTC

    \n only flushes when writing to STDOUT and only when it's connected to a terminal. That's not the case here.

    Autoflushing can be turned on using 

    use IO::Handle qw( );
LOG->autoflushing(1);

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[reply]
[d/l]

      Is that the same as $|++;?

      I'm so adjective, I verb nouns!

      chomp; # nom nom nom
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[d/l]

        $| affects the currently selected file handle (normally STDOUT). 

        $|++;

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        is a weird way of saying 

        $|=1;

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        and it's equivalent to 

        select()->autoflush(1);

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        But when acting on the same file handle, $|=1; and ->autoflush(1) are equivalent.

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[d/l]
[select]

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