55 lines
1.4 KiB
OCaml
55 lines
1.4 KiB
OCaml
(* TEST
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* hassysthreads
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include systhreads
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** bytecode
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** native
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*)
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(* Torture test - I/O interspersed with lots of GC *)
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let finished = ref false
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let gc_thread () =
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while not !finished do
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(* print_string "gc"; print_newline(); *)
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Gc.minor();
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Thread.yield()
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done
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let writer_thread (oc, size) =
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while not !finished do
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(* print_string "writer "; print_int size; print_newline(); *)
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let buff = Bytes.make size 'a' in
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ignore(Unix.write oc buff 0 size)
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done;
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let buff = Bytes.make size 'b' in
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ignore (Unix.write oc buff 0 size)
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let reader_thread (ic, size) =
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while true do
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(* print_string "reader "; print_int size; print_newline(); *)
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let buff = Bytes.make size ' ' in
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let n = Unix.read ic buff 0 size in
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(* print_string "reader "; print_int n; print_newline(); *)
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for i = 0 to n-1 do
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if Bytes.get buff i = 'b' then Thread.exit()
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else if Bytes.get buff i <> 'a' then
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print_string "error in reader_thread\n"
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done
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done
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let _ =
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let t1 = Thread.create gc_thread () in
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let (out1, in1) = Unix.pipe() in
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let t2 = Thread.create writer_thread (in1, 4096) in
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let t3 = Thread.create reader_thread (out1, 4096) in
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let (out2, in2) = Unix.pipe() in
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let t4 = Thread.create writer_thread (in2, 16) in
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let t5 = Thread.create reader_thread (out2, 16) in
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Thread.delay 3.0;
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finished := true;
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List.iter Thread.join [t1; t2; t3; t4; t5];
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print_string "passed\n"
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