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use Thread;
use Thread::Queue;
$q = new Thread::Queue;
sub reader {
my $tid = Thread->self->tid;
my $i = 0;
while (1) {
$i++;
print "reader (tid $tid): waiting for element $i...\n";
my $el = $q->dequeue;
print "reader (tid $tid): dequeued element $i: value $el\n";
select(undef, undef, undef, rand(2));
if ($el == -1) {
# end marker
print "reader (tid $tid) returning\n";
return;
}
}
}
my $nthreads = 3;
for (my $i = 0; $i < $nthreads; $i++) {
Thread->new(\&reader, $i);
}
for (my $i = 1; $i <= 10; $i++) {
my $el = int(rand(100));
select(undef, undef, undef, rand(2));
print "writer: enqueuing value $el\n";
$q->enqueue($el);
}
$q->enqueue((-1) x $nthreads); # one end marker for each thread
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