Question

There are many documents say “you should avoid using sleep with alarm, since many systems use alarm for the sleep implementation”. And actually, I’m suffering with this problem.
So does anyone can help me that what else i can do ‘sleep’ when the sleep() can’t work well with alarm? I have already tried ‘usleep’ of the Time::HiRes module, and select() function. But they didn’t work either.

Answer 1

You can try AnyEvent:

use AnyEvent;

my $cv = AnyEvent->condvar;
my $wait_one_and_a_half_seconds = AnyEvent->timer(
    after => 1.5,
    cb => sub { $cv->send }
);     
# now wait till our time has come
$cv->recv;