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use strict;
use warnings;
BEGIN {
if ($ENV{'PERL_CORE'}){
chdir('t');
unshift(@INC, '../lib');
}
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' => 10);
### Basic usage with multiple threads ###
my $sm = Thread::Semaphore->new();
my $st = Thread::Semaphore->new(0);
ok($sm, 'New Semaphore');
ok($st, 'New Semaphore');
my $token :shared = 0;
threads->create(sub {
$st->down();
is($token++, 1, 'Thread 1 got semaphore');
$st->up();
$sm->up();
$st->down(4);
is($token, 5, 'Thread 1 done');
$sm->up();
})->detach();
threads->create(sub {
$st->down(2);
is($token++, 3, 'Thread 2 got semaphore');
$st->up();
$sm->up();
$st->down(4);
is($token, 5, 'Thread 2 done');
$sm->up();
})->detach();
$sm->down();
is($token++, 0, 'Main has semaphore');
$st->up();
$sm->down();
is($token++, 2, 'Main got semaphore');
$st->up(2);
$sm->down();
is($token++, 4, 'Main re-got semaphore');
$st->up(9);
$sm->down(2);
$st->down();
ok(1, 'Main done');
threads::yield();
exit(0);
# EOF
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