| 1 |
BEGIN { |
| 2 |
eval { require Config; import Config }; |
| 3 |
if ($@) { |
| 4 |
print "1..0 # Skip: no Config\n"; |
| 5 |
exit(0); |
| 6 |
} |
| 7 |
} |
| 8 |
|
| 9 |
use Thread; |
| 10 |
use Thread::Queue; |
| 11 |
|
| 12 |
$q = new Thread::Queue; |
| 13 |
|
| 14 |
sub reader { |
| 15 |
my $tid = Thread->self->tid; |
| 16 |
my $i = 0; |
| 17 |
while (1) { |
| 18 |
$i++; |
| 19 |
print "reader (tid $tid): waiting for element $i...\n"; |
| 20 |
my $el = $q->dequeue; |
| 21 |
print "reader (tid $tid): dequeued element $i: value $el\n"; |
| 22 |
select(undef, undef, undef, rand(2)); |
| 23 |
if ($el == -1) { |
| 24 |
# end marker |
| 25 |
print "reader (tid $tid) returning\n"; |
| 26 |
return; |
| 27 |
} |
| 28 |
} |
| 29 |
} |
| 30 |
|
| 31 |
my $nthreads = 3; |
| 32 |
|
| 33 |
for (my $i = 0; $i < $nthreads; $i++) { |
| 34 |
Thread->new(\&reader, $i); |
| 35 |
} |
| 36 |
|
| 37 |
for (my $i = 1; $i <= 10; $i++) { |
| 38 |
my $el = int(rand(100)); |
| 39 |
select(undef, undef, undef, rand(2)); |
| 40 |
print "writer: enqueuing value $el\n"; |
| 41 |
$q->enqueue($el); |
| 42 |
} |
| 43 |
|
| 44 |
$q->enqueue((-1) x $nthreads); # one end marker for each thread |
