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#!/usr/bin/env perl
use strict;
use warnings;
use Test::More;
BEGIN {
use_ok 'MCE';
use_ok 'MCE::Flow';
use_ok 'MCE::Queue';
}
my @a = ();
my $q = MCE::Queue->new( queue => \@a );
sub check_enqueue {
my ($description) = @_;
is( join('', @a), '12345', $description );
}
sub check_dequeue_nb {
my ($description, $value) = @_;
is( $value, '12345', $description );
is( join('', @a), '', 'queue emptied' );
}
sub check_dequeue_timed {
my ($description, $success) = @_;
is( $success, 1, $description );
}
## Manager tests
{
$q->enqueue('12345');
check_enqueue('manager: check enqueue');
check_dequeue_nb('manager: check dequeue_nb', $q->dequeue_timed);
my $start = MCE::Util::_time();
my $ret = $q->dequeue_timed(2.0); # no timed support for the manager process
my $success = (!$ret && MCE::Util::_time() - $start < 1.0) ? 1 : 0;
check_dequeue_timed('manager: check dequeue_timed', $success);
}
## Worker tests
MCE::Flow->init( max_workers => 1 );
mce_flow sub {
my ($mce) = @_;
$q->enqueue('12345');
MCE->do('check_enqueue', 'worker: check enqueue');
MCE->do('check_dequeue_nb', 'worker: check dequeue_nb', $q->dequeue_timed);
my $start = MCE::Util::_time();
my $ret = $q->dequeue_timed(2.0);
my $success = (!$ret && MCE::Util::_time() - $start > 1.0) ? 1 : 0;
MCE->do('check_dequeue_timed', 'worker: check dequeue_timed', $success);
return;
};
MCE::Flow->finish;
## Parallel demo
my $s = MCE::Util::_time();
my @r;
MCE->new(
user_tasks => [{
# consumers
max_workers => 8,
chunk_size => 1,
sequence => [ 1, 40 ],
gather => \@r,
user_func => sub {
# each worker calls dequeue_timed approximately 5 times
if (defined(my $ret = $q->dequeue_timed(1.0))) {
MCE->printf("$ret: time %0.3f, pid $$\n", MCE::Util::_time());
MCE->gather($ret);
}
}
},{
# provider
max_workers => 1,
user_func => sub {
$q->enqueue($_) for 'a'..'d';
sleep 1;
$q->enqueue('e');
sleep 1;
$q->enqueue('f');
sleep 1;
$q->enqueue('g');
}
}]
)->run;
my $duration = MCE::Util::_time() - $s;
printf "%0.3f seconds\n", $duration;
my $success = (abs(5.0 - $duration) < 2.0) ? 1 : 0;
is( $success, 1, 'parallel demo duration' );
is( scalar(@r), 7, 'gathered size' );
is( join('', sort @r), 'abcdefg', 'gathered data' );
done_testing;
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