I'm writing a daemon for a company production system and need to know if this will come back to bite my butt.

I was wanting a way to make sure this daemon sleeps properly so I don't chew up valuable CPU time.

I'm catching and using signals and found that sleep gets "woken up" whenever a child signals in.

When I want to sleep in my prog I do this now:
1. define a variable to keep track of actual time spent sleeping. ($slept)
2. in my main loop, reset $slept to 0
3. loop until my $slept is equal or greater than my specified sleep interval ($Interval)
4. wash, rinse, repeat



my $slept;
my $Interval = 120;  

while(1)
{
    check_signals();

    $slept = 0;
    while($slept <= $Interval)
    {
         $slept += sleep(60);
    }
}

[download]
The only thing I see here is that I might end up sleeping for $Interval + 59 seconds, which is fine with me. Does anyone feel uneasy about this code?

In reply to Tracking actual time spent sleeping: Is this bad coding? by Abbacabba

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