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use strict;
use warnings;
BEGIN {
use Config;
if (! $Config{'useithreads'}) {
print("1..0 # SKIP Perl not compiled with 'useithreads'\n");
exit(0);
}
}
use threads;
use threads::shared;
use Thread::Semaphore;
if ($] == 5.008) {
require './t/test.pl'; # Test::More work-alike for Perl 5.8.0
} else {
require Test::More;
}
Test::More->import();
plan('tests' => 12);
### Basic usage with multiple threads ###
my $sm = Thread::Semaphore->new(0);
my $st = Thread::Semaphore->new(0);
ok($sm, 'New Semaphore');
ok($st, 'New Semaphore');
my $token :shared = 0;
my $thread = threads->create(sub {
ok(! $st->down_nb(), 'Semaphore unavailable to thread');
$sm->up();
$st->down(2);
ok(! $st->down_nb(5), 'Semaphore unavailable to thread');
ok($st->down_nb(2), 'Thread 1 got semaphore');
ok(! $st->down_nb(2), 'Semaphore unavailable to thread');
ok($st->down_nb(1), 'Thread 1 got semaphore');
ok(! $st->down_nb(), 'Semaphore unavailable to thread');
is($token++, 1, 'Thread done');
$sm->up();
});
$sm->down(1);
is($token++, 0, 'Main has semaphore');
$st->up();
ok(! $sm->down_nb(), 'Semaphore unavailable to main');
$st->up(4);
$sm->down();
is($token++, 2, 'Main got semaphore');
$thread->join;
exit(0);
# EOF
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