xref: /openbsd-src/gnu/usr.bin/perl/dist/threads/t/thread.t (revision e068048151d29f2562a32185e21a8ba885482260)

use strict;
use warnings;

BEGIN {
    require($ENV{PERL_CORE} ? '../../t/test.pl' : './t/test.pl');

    use Config;
    if (! $Config{'useithreads'}) {
        skip_all(q/Perl not compiled with 'useithreads'/);
    }
}

use ExtUtils::testlib;
use Data::Dumper;

use threads;

BEGIN {
    if (! eval 'use threads::shared; 1') {
        skip_all('threads::shared not available');
    }

    $| = 1;
    print("1..35\n");   ### Number of tests that will be run ###
};

print("ok 1 - Loaded\n");

### Start of Testing ###

sub content {
    print shift;
    return shift;
}
{
    my $t = threads->create(\&content, "ok 2\n", "ok 3\n", 1..1000);
    print $t->join();
}
{
    my $lock : shared;
    my $t;
    {
        lock($lock);
        $t = threads->create(sub { lock($lock); print "ok 5\n"});
        print "ok 4\n";
    }
    $t->join();
}

sub dorecurse {
    my $val = shift;
    my $ret;
    print $val;
    if(@_) {
        $ret = threads->create(\&dorecurse, @_);
        $ret->join;
    }
}
{
    my $t = threads->create(\&dorecurse, map { "ok $_\n" } 6..10);
    $t->join();
}

{
    # test that sleep lets other thread run
    my $t = threads->create(\&dorecurse, "ok 11\n");
    threads->yield; # help out non-preemptive thread implementations
    sleep 1;
    print "ok 12\n";
    $t->join();
}
{
    my $lock : shared;
    sub islocked {
        lock($lock);
        my $val = shift;
        my $ret;
        print $val;
        if (@_) {
            $ret = threads->create(\&islocked, shift);
        }
        return $ret;
    }
my $t = threads->create(\&islocked, "ok 13\n", "ok 14\n");
$t->join->join;
}



sub testsprintf {
    my $testno = shift;
    my $same = sprintf( "%0.f", $testno);
    return $testno eq $same;
}

sub threaded {
    my ($string, $string_end) = @_;

  # Do the match, saving the output in appropriate variables
    $string =~ /(.*)(is)(.*)/;
  # Yield control, allowing the other thread to fill in the match variables
    threads->yield();
  # Examine the match variable contents; on broken perls this fails
    return $3 eq $string_end;
}


{
    curr_test(15);

    my $thr1 = threads->create(\&testsprintf, 15);
    my $thr2 = threads->create(\&testsprintf, 16);

    my $short = "This is a long string that goes on and on.";
    my $shorte = " a long string that goes on and on.";
    my $long  = "This is short.";
    my $longe  = " short.";
    my $foo = "This is bar bar bar.";
    my $fooe = " bar bar bar.";
    my $thr3 = new threads \&threaded, $short, $shorte;
    my $thr4 = new threads \&threaded, $long, $longe;
    my $thr5 = new threads \&testsprintf, 19;
    my $thr6 = new threads \&testsprintf, 20;
    my $thr7 = new threads \&threaded, $foo, $fooe;

    ok($thr1->join());
    ok($thr2->join());
    ok($thr3->join());
    ok($thr4->join());
    ok($thr5->join());
    ok($thr6->join());
    ok($thr7->join());
}

# test that 'yield' is importable

package Test1;

use threads 'yield';
yield;
main::ok(1);

package main;


# test async

{
    my $th = async {return 1 };
    ok($th);
    ok($th->join());
}
{
    # There is a miniscule chance this test case may falsely fail
    # since it tests using rand()
    my %rand : shared;
    rand(10);
    threads->create( sub { $rand{int(rand(10000000000))}++ } ) foreach 1..25;
    $_->join foreach threads->list;
    ok((keys %rand >= 23), "Check that rand() is randomized in new threads")
        or diag Dumper(\%rand);
}

# bugid #24165

run_perl(prog => 'use threads 2.21;' .
                 'sub a{threads->create(shift)} $t = a sub{};' .
                 '$t->tid; $t->join; $t->tid',
         nolib => ($ENV{PERL_CORE}) ? 0 : 1,
         switches => ($ENV{PERL_CORE}) ? [] : [ '-Mblib' ]);
is($?, 0, 'coredump in global destruction');

# Attempt to free unreferenced scalar...
fresh_perl_is(<<'EOI', 'ok', { }, 'thread sub via scalar');
    use threads;
    my $test = sub {};
    threads->create($test)->join();
    print 'ok';
EOI

# Attempt to free unreferenced scalar...
fresh_perl_is(<<'EOI', 'ok', { }, 'thread sub via $_[0]');
    use threads;
    sub thr { threads->new($_[0]); }
    thr(sub { })->join;
    print 'ok';
EOI

# [perl #45053]  Memory corruption from eval return in void context
fresh_perl_is(<<'EOI', 'ok', { }, 'void eval return');
    use threads;
    threads->create(sub { eval '1' });
    $_->join() for threads->list;
    print 'ok';
EOI

# test CLONE_SKIP() functionality
SKIP: {
    skip('CLONE_SKIP not implemented in Perl < 5.8.7', 5) if ($] < 5.008007);

    my %c : shared;
    my %d : shared;

    # ---

    package A;
    sub CLONE_SKIP { $c{"A-$_[0]"}++; 1; }
    sub DESTROY    { $d{"A-". ref $_[0]}++ }

    package A1;
    our @ISA = qw(A);
    sub CLONE_SKIP { $c{"A1-$_[0]"}++; 1; }
    sub DESTROY    { $d{"A1-". ref $_[0]}++ }

    package A2;
    our @ISA = qw(A1);

    # ---

    package B;
    sub CLONE_SKIP { $c{"B-$_[0]"}++; 0; }
    sub DESTROY    { $d{"B-" . ref $_[0]}++ }

    package B1;
    our @ISA = qw(B);
    sub CLONE_SKIP { $c{"B1-$_[0]"}++; 1; }
    sub DESTROY    { $d{"B1-" . ref $_[0]}++ }

    package B2;
    our @ISA = qw(B1);

    # ---

    package C;
    sub CLONE_SKIP { $c{"C-$_[0]"}++; 1; }
    sub DESTROY    { $d{"C-" . ref $_[0]}++ }

    package C1;
    our @ISA = qw(C);
    sub CLONE_SKIP { $c{"C1-$_[0]"}++; 0; }
    sub DESTROY    { $d{"C1-" . ref $_[0]}++ }

    package C2;
    our @ISA = qw(C1);

    # ---

    package D;
    sub DESTROY    { $d{"D-" . ref $_[0]}++ }

    package D1;
    our @ISA = qw(D);

    package main;

    {
        my @objs;
        for my $class (qw(A A1 A2 B B1 B2 C C1 C2 D D1)) {
            push @objs, bless [], $class;
        }

        sub f {
            my $depth = shift;
            my $cloned = ""; # XXX due to recursion, doesn't get initialized
            $cloned .= "$_" =~ /ARRAY/ ? '1' : '0' for @objs;
            is($cloned, ($depth ? '00010001111' : '11111111111'),
                "objs clone skip at depth $depth");
            threads->create( \&f, $depth+1)->join if $depth < 2;
            @objs = ();
        }
        f(0);
    }

    curr_test(curr_test()+2);
    ok(eq_hash(\%c,
        {
            qw(
                A-A     2
                A1-A1   2
                A1-A2   2
                B-B     2
                B1-B1   2
                B1-B2   2
                C-C     2
                C1-C1   2
                C1-C2   2
            )
        }),
        "counts of calls to CLONE_SKIP");
    ok(eq_hash(\%d,
        {
            qw(
                A-A     1
                A1-A1   1
                A1-A2   1
                B-B     3
                B1-B1   1
                B1-B2   1
                C-C     1
                C1-C1   3
                C1-C2   3
                D-D     3
                D-D1    3
            )
        }),
        "counts of calls to DESTROY");
}

# Bug 73330 - Apply magic to arg to ->object()
{
    my @tids :shared;

    my $thr = threads->create(sub {
                        lock(@tids);
                        push(@tids, threads->tid());
                        cond_signal(@tids);
                    });

    {
        lock(@tids);
        cond_wait(@tids) while (! @tids);
    }

    ok(threads->object($_), 'Got threads object') foreach (@tids);

    $thr->join();
}

exit(0);

# EOF