31 lines
677 B
Perl
31 lines
677 B
Perl
use Thread qw(async);
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use Thread::Semaphore;
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my $sem = Thread::Semaphore->new(0);
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$nthreads = 4;
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for (my $i = 0; $i < $nthreads; $i++) {
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async {
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my $tid = Thread->self->tid;
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print "thread $tid started...\n";
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$sem->down;
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print "thread $tid finishing\n";
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};
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}
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print "main: started $nthreads threads\n";
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sleep 2;
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my @list = Thread->list;
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printf "main: Thread->list returned %d threads\n", scalar(@list);
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foreach my $t (@list) {
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print "inspecting thread $t...\n";
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print "...deref is $$t\n";
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print "...flags = ", $t->flags, "\n";
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print "...tid = ", $t->tid, "\n";
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}
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print "main thread telling workers to finish off...\n";
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$sem->up($nthreads);
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