# Make all the form submissions happen at same instant. Wait until
# every thread finishes their initial requests and processing before
# submitting.
use Coro 'async';
use LWP::Protocol::AnyEvent::http;
BEGIN { *CORE::GLOBAL::sleep = \&Coro::AnyEvent::sleep; }
my @q = map { async { prepare_requests() } } 1 .. $count;
@q = map { $_->join } @q;
@q = map { async { submit_form(@_) } $_ } @q;
$_->join for @q;