57 lines
2.1 KiB
OCaml
57 lines
2.1 KiB
OCaml
(***********************************************************************)
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(* *)
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(* OCaml *)
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(* *)
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(* Xavier Leroy, projet Cristal, INRIA Rocquencourt *)
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(* *)
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(* Copyright 1996 Institut National de Recherche en Informatique et *)
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(* en Automatique. All rights reserved. This file is distributed *)
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(* under the terms of the Q Public License version 1.0. *)
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(* *)
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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 = String.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 = String.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 = String.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 buff.[i] = 'b' then Thread.exit()
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else if buff.[i] <> 'a' then 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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