1use strict;
2use warnings;
3
4BEGIN {
5    use Config;
6    if (! $Config{'useithreads'}) {
7        print("1..0 # SKIP Perl not compiled with 'useithreads'\n");
8        exit(0);
9    }
10}
11
12use threads;
13use threads::shared;
14use Thread::Queue;
15
16if ($] == 5.008) {
17    require 't/test.pl';   # Test::More work-alike for Perl 5.8.0
18} else {
19    require Test::More;
20}
21Test::More->import();
22plan('tests' => 46);
23
24# Regular array
25my @ary1 = qw/foo bar baz/;
26push(@ary1, [ 1..3 ], { 'qux' => 99 });
27
28# Shared array
29my @ary2 :shared = (99, 21, 86);
30
31# Regular hash-based object
32my $obj1 = {
33    'foo' => 'bar',
34    'qux' => 99,
35    'biff' => [ qw/fee fi fo/ ],
36    'boff' => { 'bork' => 'true' },
37};
38bless($obj1, 'Foo');
39
40# Shared hash-based object
41my $obj2 = &share({});
42$$obj2{'bar'} = 86;
43$$obj2{'key'} = 'foo';
44bless($obj2, 'Bar');
45
46# Scalar ref
47my $sref1 = \do{ my $scalar = 'foo'; };
48
49# Shared scalar ref object
50my $sref2 = \do{ my $scalar = 69; };
51share($sref2);
52bless($sref2, 'Baz');
53
54# Ref of ref
55my $foo = [ 5, 'bork', { 'now' => 123 } ];
56my $bar = \$foo;
57my $baz = \$bar;
58my $qux = \$baz;
59is_deeply($$$$qux, $foo, 'Ref of ref');
60
61# Circular refs
62my $cir1;
63$cir1 = \$cir1;
64
65my $cir1s : shared;
66$cir1s = \$cir1s;
67
68my $cir2;
69$cir2 = [ \$cir2, { 'ref' => \$cir2 } ];
70
71my $cir3 :shared = &share({});
72$cir3->{'self'} = \$cir3;
73bless($cir3, 'Circular');
74
75# Queue up items
76my $q = Thread::Queue->new(\@ary1, \@ary2);
77ok($q, 'New queue');
78is($q->pending(), 2, 'Queue count');
79$q->enqueue($obj1, $obj2);
80is($q->pending(), 4, 'Queue count');
81$q->enqueue($sref1, $sref2, $foo, $qux);
82is($q->pending(), 8, 'Queue count');
83$q->enqueue($cir1, $cir1s, $cir2, $cir3);
84is($q->pending(), 12, 'Queue count');
85
86# Process items in thread
87threads->create(sub {
88    is($q->pending(), 12, 'Queue count in thread');
89
90    my $tary1 = $q->dequeue();
91    ok($tary1, 'Thread got item');
92    is(ref($tary1), 'ARRAY', 'Item is array ref');
93    is_deeply($tary1, \@ary1, 'Complex array');
94    $$tary1[1] = 123;
95
96    my $tary2 = $q->dequeue();
97    ok($tary2, 'Thread got item');
98    is(ref($tary2), 'ARRAY', 'Item is array ref');
99    for (my $ii=0; $ii < @ary2; $ii++) {
100        is($$tary2[$ii], $ary2[$ii], 'Shared array element check');
101    }
102    $$tary2[1] = 444;
103
104    my $tobj1 = $q->dequeue();
105    ok($tobj1, 'Thread got item');
106    is(ref($tobj1), 'Foo', 'Item is object');
107    is_deeply($tobj1, $obj1, 'Object comparison');
108    $$tobj1{'foo'} = '.|.';
109    $$tobj1{'smiley'} = ':)';
110
111    my $tobj2 = $q->dequeue();
112    ok($tobj2, 'Thread got item');
113    is(ref($tobj2), 'Bar', 'Item is object');
114    is($$tobj2{'bar'}, 86, 'Shared object element check');
115    is($$tobj2{'key'}, 'foo', 'Shared object element check');
116    $$tobj2{'tick'} = 'tock';
117    $$tobj2{'frowny'} = ':(';
118
119    my $tsref1 = $q->dequeue();
120    ok($tsref1, 'Thread got item');
121    is(ref($tsref1), 'SCALAR', 'Item is scalar ref');
122    is($$tsref1, 'foo', 'Scalar ref contents');
123    $$tsref1 = 0;
124
125    my $tsref2 = $q->dequeue();
126    ok($tsref2, 'Thread got item');
127    is(ref($tsref2), 'Baz', 'Item is object');
128    is($$tsref2, 69, 'Shared scalar ref contents');
129    $$tsref2 = 'zzz';
130
131    my $myfoo = $q->dequeue();
132    is_deeply($myfoo, $foo, 'Array ref');
133
134    my $qux = $q->dequeue();
135    is_deeply($$$$qux, $foo, 'Ref of ref');
136
137    my ($c1, $c1s, $c2, $c3) = $q->dequeue(4);
138    SKIP: {
139        skip("Needs threads::shared >= 1.19", 5)
140            if ($threads::shared::VERSION < 1.19);
141
142        is(threads::shared::_id($$c1),
143           threads::shared::_id($c1),
144                'Circular ref - scalar');
145
146        is(threads::shared::_id($$c1s),
147           threads::shared::_id($c1s),
148                'Circular ref - shared scalar');
149
150        is(threads::shared::_id(${$c2->[0]}),
151           threads::shared::_id($c2),
152                'Circular ref - array');
153
154        is(threads::shared::_id(${$c2->[1]->{'ref'}}),
155           threads::shared::_id($c2),
156                'Circular ref - mixed');
157
158        is(threads::shared::_id(${$c3->{'self'}}),
159           threads::shared::_id($c3),
160                'Circular ref - hash');
161    }
162
163    is($q->pending(), 0, 'Empty queue');
164    my $nothing = $q->dequeue_nb();
165    ok(! defined($nothing), 'Nothing on queue');
166})->join();
167
168# Check results of thread's activities
169is($q->pending(), 0, 'Empty queue');
170
171is($ary1[1], 'bar', 'Array unchanged');
172is($ary2[1], 444, 'Shared array changed');
173
174is($$obj1{'foo'}, 'bar', 'Object unchanged');
175ok(! exists($$obj1{'smiley'}), 'Object unchanged');
176
177is($$obj2{'tick'}, 'tock', 'Shared object changed');
178is($$obj2{'frowny'}, ':(', 'Shared object changed');
179
180is($$sref1, 'foo', 'Scalar ref unchanged');
181is($$sref2, 'zzz', 'Shared scalar ref changed');
182
183exit(0);
184
185# EOF
186