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1996-09-28
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3KB
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111 lines
------------------------------------------------------------------------------
-- --
-- GNAT RUNTIME 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 --
-- --
-- B o d y --
-- --
-- $Revision: 1.3 $ --
-- --
-- Copyright (c) 1992,1993,1994,1995 NYU, All Rights Reserved --
-- --
-- The GNAT library is free software; you can redistribute it and/or modify --
-- it under terms of the GNU Library General Public License as published by --
-- the Free Software Foundation; either version 2, or (at your option) any --
-- later version. The GNAT library is distributed in the hope that it will --
-- be useful, but WITHOUT ANY WARRANTY; without even the implied warranty --
-- of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU --
-- Library General Public License for more details. You should have --
-- received a copy of the GNU Library General Public License along with --
-- the GNAT library; see the file COPYING.LIB. If not, write to the Free --
-- Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. --
-- --
------------------------------------------------------------------------------
package body Ada.Synchronous_Task_Control is
-------------------
-- Suspension_PO --
-------------------
protected body Suspension_PO is
----------
-- Wait --
----------
entry Wait when Open is
begin
null;
end Wait;
---------------
-- Set_False --
---------------
procedure Set_False is
begin
Open := False;
end Set_False;
--------------
-- Set_True --
--------------
procedure Set_True is
begin
Open := True;
end Set_True;
--------------
-- Get_Open --
--------------
function Get_Open return Boolean is
begin
return Open;
end Get_Open;
end Suspension_PO;
--------------
-- Set_True --
--------------
procedure Set_True (S : in out Suspension_Object) is
begin
S.Suspend.Set_True;
end Set_True;
---------------
-- Set_False --
---------------
procedure Set_False (S : in out Suspension_Object) is
begin
S.Suspend.Set_False;
end Set_False;
-------------------
-- Current_State --
-------------------
function Current_State (S : Suspension_Object) return Boolean is
begin
return S.Suspend.Get_Open;
end Current_State;
------------------------
-- Suspend_Until_True --
------------------------
procedure Suspend_Until_True (S : in out Suspension_Object) is
begin
S.Suspend.Wait;
end Suspend_Until_True;
end Ada.Synchronous_Task_Control;