Use of condvar in a callback of another event

[Michael Fung]

Hi all,


I still feel nausea for event driven programming #-{

I have the following sub which use a condvar to wait for result, but 
this sub will be called in a callback of another event. Will this 
"nesting" have undesirable effects during high load?

[code]
# $redis is an EV::Hiredis object already created
sub do_auth {
    my $result = 0;
    my $cv = AE::cv;

    $redis->hmget( "xxx", 'aaa', 'bbb',						
      sub {
        # check result and set $result ...
        $cv->send;
      });
   	
    $cv->recv;
    return $result;
}
[/code]


Rgds,
Michael