34 lines
1.4 KiB
OCaml
34 lines
1.4 KiB
OCaml
(***********************************************************************)
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(* *)
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(* OCaml *)
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(* *)
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(* Xavier Leroy and Damien Doligez, 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 GNU Library General Public License, with *)
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(* the special exception on linking described in file ../../LICENSE. *)
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(* *)
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(***********************************************************************)
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type t = { mutable waiting: Thread.t list }
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let create () = { waiting = [] }
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let wait cond mut =
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Thread.critical_section := true;
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Mutex.unlock mut;
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cond.waiting <- Thread.self() :: cond.waiting;
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Thread.sleep();
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Mutex.lock mut
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let signal cond =
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match cond.waiting with (* atomic *)
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[] -> ()
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| th :: rem -> cond.waiting <- rem (* atomic *); Thread.wakeup th
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let broadcast cond =
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let w = cond.waiting in (* atomic *)
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cond.waiting <- []; (* atomic *)
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List.iter Thread.wakeup w
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