#!perl
BEGIN {
chdir 't' if -d 't';
@INC = '../lib';
require './test.pl';
$| = 1;
skip_all_without_config('useithreads');
skip_all_if_miniperl("no dynamic loading on miniperl, no threads");
plan(26);
}
use strict;
use warnings;
use threads;
# test that we don't get:
# Attempt to free unreferenced scalar: SV 0x40173f3c
fresh_perl_is(<<'EOI', 'ok', { }, 'delete() under threads');
use threads;
threads->create(sub { my %h=(1,2); delete $h{1}})->join for 1..2;
print "ok";
EOI
#PR24660
# test that we don't get:
# Attempt to free unreferenced scalar: SV 0x814e0dc.
fresh_perl_is(<<'EOI', 'ok', { }, 'weaken ref under threads');
use threads;
use Scalar::Util;
my $data = "a";
my $obj = \$data;
my $copy = $obj;
Scalar::Util::weaken($copy);
threads->create(sub { 1 })->join for (1..1);
print "ok";
EOI
#PR24663
# test that we don't get:
# panic: magic_killbackrefs.
# Scalars leaked: 3
fresh_perl_is(<<'EOI', 'ok', { }, 'weaken ref #2 under threads');
package Foo;
sub new { bless {},shift }
package main;
use threads;
use Scalar::Util qw(weaken);
my $object = Foo->new;
my $ref = $object;
weaken $ref;
threads->create(sub { $ref = $object } )->join; # $ref = $object causes problems
print "ok";
EOI
#PR30333 - sort() crash with threads
sub mycmp { length($b) <=> length($a) }
sub do_sort_one_thread {
my $kid = shift;
print "# kid $kid before sort\n";
my @list = ( 'x', 'yy', 'zzz', 'a', 'bb', 'ccc', 'aaaaa', 'z',
'hello', 's', 'thisisalongname', '1', '2', '3',
'abc', 'xyz', '1234567890', 'm', 'n', 'p' );
for my $j (1..99999) {
for my $k (sort mycmp @list) {}
}
print "# kid $kid after sort, sleeping 1\n";
sleep(1);
print "# kid $kid exit\n";
}
sub do_sort_threads {
my $nthreads = shift;
my @kids = ();
for my $i (1..$nthreads) {
my $t = threads->create(\&do_sort_one_thread, $i);
print "# parent $$: continue\n";
push(@kids, $t);
}
for my $t (@kids) {
print "# parent $$: waiting for join\n";
$t->join();
print "# parent $$: thread exited\n";
}
}
do_sort_threads(2); # crashes
ok(1);
# Change 24643 made the mistake of assuming that CvCONST can only be true on
# XSUBs. Somehow it can also end up on perl subs.
fresh_perl_is(<<'EOI', 'ok', { }, 'cloning constant subs');
use constant x=>1;
use threads;
$SIG{__WARN__} = sub{};
async sub {};
print "ok";
EOI
# From a test case by Tim Bunce in
# http://www.nntp.perl.org/group/perl.perl5.porters/63123
fresh_perl_is(<<'EOI', 'ok', { }, 'Ensure PL_linestr can be cloned');
use threads;
print do 'op/threads_create.pl' || die $@;
EOI
# Scalars leaked: 1
foreach my $BLOCK (qw(CHECK INIT)) {
fresh_perl_is(<<EOI, 'ok', { }, "threads in $BLOCK block");
use threads;
$BLOCK { threads->create(sub {})->join; }
print 'ok';
EOI
}
# Scalars leaked: 1
fresh_perl_is(<<'EOI', 'ok', { }, 'Bug #41138');
use threads;
leak($x);
sub leak
{
local $x;
threads->create(sub {})->join();
}
print 'ok';
EOI
# [perl #45053] Memory corruption with heavy module loading in threads
#
# run-time usage of newCONSTSUB (as done by the IO boot code) wasn't
# thread-safe - got occasional coredumps or malloc corruption
watchdog(60, "process");
{
local $SIG{__WARN__} = sub {}; # Ignore any thread creation failure warnings
my @t;
for (1..100) {
my $thr = threads->create( sub { require IO });
last if !defined($thr); # Probably ran out of memory
push(@t, $thr);
}
$_->join for @t;
ok(1, '[perl #45053]');
}
sub matchit {
is (ref $_[1], "Regexp");
like ($_[0], $_[1]);
}
threads->new(\&matchit, "Pie", qr/pie/i)->join();
# tests in threads don't get counted, so
curr_test(curr_test() + 2);
# the seen_evals field of a regexp was getting zeroed on clone, so
# within a thread it didn't know that a regex object contained a 'safe'
# code expression, so it later died with 'Eval-group not allowed' when
# you tried to interpolate the object
sub safe_re {
my $re = qr/(?{1})/; # this is literal, so safe
eval { "a" =~ /$re$re/ }; # interpolating safe values, so safe
ok($@ eq "", 'clone seen-evals');
}
threads->new(\&safe_re)->join();
# tests in threads don't get counted, so
curr_test(curr_test() + 1);
# This used to crash in 5.10.0 [perl #64954]
undef *a;
threads->new(sub {})->join;
pass("undefing a typeglob doesn't cause a crash during cloning");
# Test we don't get:
# panic: del_backref during global destruction.
# when returning a non-closure sub from a thread and subsequently starting
# a new thread.
fresh_perl_is(<<'EOI', 'ok', { }, 'No del_backref panic [perl #70748]');
use threads;
sub foo { return (sub { }); }
my $bar = threads->create(\&foo)->join();
threads->create(sub { })->join();
print "ok";
EOI
# Another, more reliable test for the same del_backref bug:
fresh_perl_is(
<<' EOJ', 'ok', {}, 'No del_backref panic [perl #70748] (2)'
use threads;
push @bar, threads->create(sub{sub{}})->join() for 1...10;
print "ok";
EOJ
);
# Simple closure-returning test: At least this case works (though it
# leaks), and we don't want to break it.
fresh_perl_is(<<'EOJ', 'foo', {}, 'returning a closure');
use threads;
print create threads sub {
my $x = 'foo';
sub{sub{$x}}
}=>->join->()()
//"undef"
EOJ
# At the point of thread creation, $h{1} is on the temps stack.
# The weak reference $a, however, is visible from the symbol table.
fresh_perl_is(<<'EOI', 'ok', { }, 'Test for 34394ecd06e704e9');
use threads;
%h = (1, 2);
use Scalar::Util 'weaken';
$a = \$h{1};
weaken($a);
delete $h{1} && threads->create(sub {}, shift)->join();
print 'ok';
EOI
# This will fail in "interesting" ways if stashes in clone_params is not
# initialised correctly.
fresh_perl_like(<<'EOI', qr/\AThread 1 terminated abnormally: Not a CODE reference/, { }, 'RT #73046');
use strict;
use threads;
sub foo::bar;
my %h = (1, *{$::{'foo::'}}{HASH});
*{$::{'foo::'}} = {};
threads->create({}, delete $h{1})->join();
print "end";
EOI
fresh_perl_is(<<'EOI', 'ok', { }, '0 refcnt neither on tmps stack nor in @_');
use threads;
my %h = (1, []);
use Scalar::Util 'weaken';
my $a = $h{1};
weaken($a);
delete $h{1} && threads->create(sub {}, shift)->join();
print 'ok';
EOI
{
my $got;
sub stuff {
my $a;
if (@_) {
$a = "Leakage";
threads->create(\&stuff)->join();
} else {
is ($a, undef, 'RT #73086 - clone used to clone active pads');
}
}
stuff(1);
curr_test(curr_test() + 1);
}
{
my $got;
sub more_stuff {
my $a;
$::b = \$a;
if (@_) {
$a = "More leakage";
threads->create(\&more_stuff)->join();
} else {
is ($a, undef, 'Just special casing lexicals in ?{ ... }');
}
}
more_stuff(1);
curr_test(curr_test() + 1);
}
# Test from Jerry Hedden, reduced by him from Object::InsideOut's tests.
fresh_perl_is(<<'EOI', 'ok', { }, '0 refcnt during CLONE');
use strict;
use warnings;
use threads;
{
package My::Obj;
use Scalar::Util 'weaken';
my %reg;
sub new
{
# Create object with ID = 1
my $class = shift;
my $id = 1;
my $obj = bless(\do{ my $scalar = $id; }, $class);
# Save weak copy of object for reference during cloning
weaken($reg{$id} = $obj);
# Return object
return $obj;
}
# Return the internal ID of the object
sub id
{
my $obj = shift;
return $$obj;
}
# During cloning 'look' at the object
sub CLONE {
foreach my $id (keys(%reg)) {
# This triggers SvREFCNT_inc() then SvREFCNT_dec() on the referant.
my $obj = $reg{$id};
}
}
}
# Create object in 'main' thread
my $obj = My::Obj->new();
my $id = $obj->id();
die "\$id is '$id'" unless $id == 1;
# Access object in thread
threads->create(
sub {
print $obj->id() == 1 ? "ok\n" : "not ok '" . $obj->id() . "'\n";
}
)->join();
EOI
# make sure peephole optimiser doesn't recurse heavily.
# (We run this inside a thread to get a small stack)
{
# lots of constructs that have o->op_other etc
my $code = <<'EOF';
$r = $x || $y;
$x ||= $y;
$r = $x // $y;
$x //= $y;
$r = $x && $y;
$x &&= $y;
$r = $x ? $y : $z;
@a = map $x+1, @a;
@a = grep $x+1, @a;
$r = /$x/../$y/;
# this one will fail since we removed tail recursion optimisation
# with f11ca51e41e8
#while (1) { $x = 0 };
while (0) { $x = 0 };
for ($x=0; $y; $z=0) { $r = 0 };
for (1) { $x = 0 };
{ $x = 0 };
$x =~ s/a/$x + 1/e;
EOF
$code = 'my ($r, $x,$y,$z,@a); return 5; ' . ($code x 1000);
my $res = threads->create(sub { eval $code})->join;
is($res, 5, "avoid peephole recursion");
}
# [perl #78494] Pipes shared between threads block when closed
{
my $perl = which_perl;
$perl = qq'"$perl"' if $perl =~ /\s/;
open(my $OUT, "|$perl") || die("ERROR: $!");
threads->create(sub { })->join;
ok(1, "Pipes shared between threads do not block when closed");
}
# [perl #105208] Typeglob clones should not be cloned again during a join
{
threads->create(sub { sub { $::hypogamma = 3 } })->join->();
is $::hypogamma, 3, 'globs cloned and joined are not recloned';
}
# EOF