------------------------------------------------------------------------------
--                                                                          --
--                           OCARINA COMPONENTS                             --
--                                                                          --
--                A R A O . P E R I O D I C _ T H R E A D S                 --
--                                                                          --
--                                 S p e c                                  --
--                                                                          --
--               Copyright (C) 2005-2006, GET-Telecom Paris.                --
--                                                                          --
-- Ocarina  is free software;  you  can  redistribute  it and/or  modify    --
-- it under terms of the GNU General Public License as published by the     --
-- Free Software Foundation; either version 2, or (at your option) any      --
-- later version. Ocarina 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 General --
-- Public License for more details. You should have received  a copy of the --
-- GNU General Public License distributed with Ocarina; see file COPYING.   --
-- If not, write to the Free Software Foundation, 51 Franklin Street, Fifth --
-- Floor, Boston, MA 02111-1301, 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.                                       --
--                                                                          --
--                 Ocarina is maintained by the Ocarina team                --
--                       (ocarina-users@listes.enst.fr)                     --
--                                                                          --
------------------------------------------------------------------------------

with System;
with PolyORB.Tasking.Threads;

package ARAO.Periodic_Threads is
   use PolyORB.Tasking.Threads;

   procedure Create_Periodic_Thread
     (TP           : Parameterless_Procedure;
      Priority     : System.Any_Priority := System.Default_Priority;
      Storage_Size : Integer := 0);
   --  This procedure creates a periodic thread. The fact that the
   --  thread is periodic is handled in the TP procedure. Also, we
   --  assume that the PolyORB thread pool was properly created during
   --  the setup phase. Storage_size 0 is default size (not really 0
   --  bit).

   Default_Storage_Size : constant Integer;

   type Create_PT_Ptr is access procedure
     (TP           : Parameterless_Procedure;
      Priority     : System.Any_Priority := System.Default_Priority;
      Storage_Size : Integer := Default_Storage_Size);

private

   The_Create_Thread : Create_PT_Ptr;
   --  Depending on the tasking profile, this pointer is set to the
   --  correct procedure that creates a periodic thread.

   Default_Storage_Size : constant Integer := 64 * 1024;
   --  64KB is default size task stack size

end ARAO.Periodic_Threads;