INTERFACE UnixMutex;

(***************************************************************************)
(*                      Copyright (C) Olivetti 1989                        *)
(*                          All Rights reserved                            *)
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(* warranties with respect to this software, whether expressed or implied  *)
(* under any law, including all implied warranties of merchantibility and  *)
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(***************************************************************************)

IMPORT Thread;

VAR
  errno, time: Thread.Mutex;
(* These mutexes are used to protect static data when calling Unix and the
unix libraries.  *)

PROCEDURE Null() RAISES {};
(* just so; this merely ensures that the implementation of this interface 
is included, because it exports this procedure. *)

END UnixMutex.