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|
use strict;
use warnings;
BEGIN {
use Config;
if (! $Config{'useithreads'}) {
print("1..0 # SKIP Perl not compiled with 'useithreads'\n");
exit(0);
}
}
use threads;
use Thread::Queue;
BEGIN { # perl RT 133382
if ($] == 5.008) {
require 't/test.pl'; # Test::More work-alike for Perl 5.8.0
} else {
require Test::More;
}
Test::More->import();
} # end BEGIN
plan('tests' => 81);
### Basic usage with multiple threads ###
my $nthreads = 5;
my $q = Thread::Queue->new(1..$nthreads);
ok($q, 'New queue');
is($q->pending(), $nthreads, 'Pre-populated queue count');
sub reader {
my $id = threads->tid();
while ((my $el = $q->dequeue()) != -1) {
ok($el >= 1, "Thread $id got $el");
select(undef, undef, undef, rand(1));
}
ok(1, "Thread $id done");
}
my @threads;
push(@threads, threads->create('reader')) for (1..$nthreads);
for (1..20) {
select(undef, undef, undef, rand(1));
$q->enqueue($_);
}
$q->enqueue((-1) x $nthreads); # One end marker for each thread
$_->join() foreach @threads;
undef(@threads);
is($q->pending(), 0, 'Empty queue');
### ->dequeue_nb() test ###
$q = Thread::Queue->new();
ok($q, 'New queue');
is($q->pending(), 0, 'Empty queue');
my @items = qw/foo bar baz/;
$q->enqueue(@items);
threads->create(sub {
is($q->pending(), scalar(@items), 'Queue count in thread');
while (my $el = $q->dequeue_nb()) {
is($el, shift(@items), "Thread got $el");
}
is($q->pending(), 0, 'Empty queue');
$q->enqueue('done');
})->join();
is($q->pending(), 1, 'Queue count after thread');
is($q->dequeue(), 'done', 'Thread reported done');
is($q->pending(), 0, 'Empty queue');
### ->dequeue(COUNT) test ###
my $count = 3;
sub reader2 {
my $id = threads->tid();
while (1) {
my @el = $q->dequeue($count);
is(scalar(@el), $count, "Thread $id got @el");
select(undef, undef, undef, rand(1));
return if ($el[0] == 0);
}
}
push(@threads, threads->create('reader2')) for (1..$nthreads);
$q->enqueue(1..4*$count*$nthreads);
$q->enqueue((0) x ($count*$nthreads));
$_->join() foreach @threads;
undef(@threads);
is($q->pending(), 0, 'Empty queue');
### ->dequeue_nb(COUNT) test ###
@items = qw/foo bar baz qux exit/;
$q->enqueue(@items);
is($q->pending(), scalar(@items), 'Queue count');
threads->create(sub {
is($q->pending(), scalar(@items), 'Queue count in thread');
while (my @el = $q->dequeue_nb(2)) {
is($el[0], shift(@items), "Thread got $el[0]");
if ($el[0] eq 'exit') {
is(scalar(@el), 1, 'Thread to exit');
} else {
is($el[1], shift(@items), "Thread got $el[1]");
}
}
is($q->pending(), 0, 'Empty queue');
$q->enqueue('done');
})->join();
is($q->pending(), 1, 'Queue count after thread');
is($q->dequeue(), 'done', 'Thread reported done');
is($q->pending(), 0, 'Empty queue');
exit(0);
# EOF
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