To be portable, wait loops need to account for the possibility that sleep() might terminate prematurely. It all comes down to something like this: 
  while ( ($t = time()) < $targettime ) {
      sleep($targettime - $t);
  }

[download]
If you want to see a particularly elaborate idle loop, check out the source code for MisterHouse, which controls a pretty wild X10-infected house.

In reply to Re: Scheduling at NT by dws
in thread Scheduling at NT by LiTinOveWeedle

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