-------------------------------------------------------------------------------
--- --
--- GNAT RUN-TIME COMPONENTS --
--- --
--- A D A . S Y N C H R O N O U S _ T A S K _ C O N T R O L --
--- --
--- S p e c --
--- --
--- $Revision: 1.1.16.1 $
--- --
--- Copyright (C) 1992-2001 Free Software Foundation, Inc. --
--- --
--- This specification is derived from the Ada Reference Manual for use with --
--- GNAT. The copyright notice above, and the license provisions that follow --
--- apply solely to the contents of the part following the private keyword. --
--- --
--- GNAT is free software; you can redistribute it and/or modify it under --
--- terms of the GNU General Public License as published by the Free Soft- --
--- ware Foundation; either version 2, or (at your option) any later ver- --
--- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
--- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
--- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
--- for more details. You should have received a copy of the GNU General --
--- Public License distributed with GNAT; see file COPYING. If not, write --
--- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
--- MA 02111-1307, USA. --
--- --
--- As a special exception, if other files instantiate generics from this --
--- unit, or you link this unit with other files to produce an executable, --
--- this unit does not by itself cause the resulting executable to be --
--- covered by the GNU General Public License. This exception does not --
--- however invalidate any other reasons why the executable file might be --
--- covered by the GNU Public License. --
--- --
--- GNAT was originally developed by the GNAT team at New York University. --
--- Extensive contributions were provided by Ada Core Technologies Inc. --
--- --
-------------------------------------------------------------------------------
-
-with System.OS_Interface;
-with Ada.Finalization;
-package Ada.Synchronous_Task_Control is
-
- type Suspension_Object is limited private;
-
- procedure Set_True (S : in out Suspension_Object);
-
- procedure Set_False (S : in out Suspension_Object);
-
- function Current_State (S : Suspension_Object) return Boolean;
-
- procedure Suspend_Until_True (S : in out Suspension_Object);
-
-private
-
- procedure Initialize (S : in out Suspension_Object);
-
- procedure Finalize (S : in out Suspension_Object);
-
- -- Implement with a VxWorks binary semaphore. A second semaphore
- -- is used to avoid a race condition related to the implementation of
- -- the STC requirement to raise Program_Error when Suspend_Until_True is
- -- called with a task already pending on the suspension object
-
- type Suspension_Object is new Ada.Finalization.Controlled with record
- Sema : System.OS_Interface.SEM_ID;
- Mutex : System.OS_Interface.SEM_ID;
- end record;
-
-end Ada.Synchronous_Task_Control;