Commit | Line | Data |
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1 | use Thread; |
2 | use Thread::Queue; |
3 | |
4 | $q = new Thread::Queue; |
5 | |
6 | sub reader { |
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7 | my $tid = Thread->self->tid; |
8 | my $i = 0; |
9 | while (1) { |
10 | $i++; |
11 | print "reader (tid $tid): waiting for element $i...\n"; |
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12 | my $el = $q->dequeue; |
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13 | print "reader (tid $tid): dequeued element $i: value $el\n"; |
14 | select(undef, undef, undef, rand(2)); |
15 | if ($el == -1) { |
16 | # end marker |
17 | print "reader (tid $tid) returning\n"; |
18 | return; |
19 | } |
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20 | } |
21 | } |
22 | |
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23 | my $nthreads = 3; |
24 | |
25 | for (my $i = 0; $i < $nthreads; $i++) { |
26 | Thread->new(\&reader, $i); |
27 | } |
28 | |
29 | for (my $i = 1; $i <= 10; $i++) { |
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30 | my $el = int(rand(100)); |
31 | select(undef, undef, undef, rand(2)); |
32 | print "writer: enqueuing value $el\n"; |
33 | $q->enqueue($el); |
34 | } |
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35 | |
36 | $q->enqueue((-1) x $nthreads); # one end marker for each thread |