------------------------------------------------------------------------------ -- -- -- GNAT RUNTIME COMPONENTS -- -- -- -- G N A T . T H R E A D S -- -- -- -- B o d y -- -- -- -- -- -- Copyright (C) 1998-2000 Ada Core Technologies, Inc. -- -- -- -- 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 is maintained by Ada Core Technologies Inc (http://www.gnat.com). -- -- -- ------------------------------------------------------------------------------ with Ada.Task_Identification; use Ada.Task_Identification; with System.Task_Primitives.Operations; with System.Tasking; with System.OS_Interface; with Unchecked_Conversion; package body GNAT.Threads is use System; function To_Addr is new Unchecked_Conversion (Task_Id, Address); function To_Id is new Unchecked_Conversion (Address, Task_Id); function To_Id is new Unchecked_Conversion (Address, Tasking.Task_ID); type Code_Proc is access procedure (Id : Address; Parm : Void_Ptr); task type Thread (Stsz : Natural; Prio : Any_Priority; Parm : Void_Ptr; Code : Code_Proc) is pragma Priority (Prio); pragma Storage_Size (Stsz); end Thread; task body Thread is begin Code.all (To_Addr (Current_Task), Parm); end Thread; type Tptr is access Thread; ------------------- -- Create_Thread -- ------------------- function Create_Thread (Code : Address; Parm : Void_Ptr; Size : Natural; Prio : Integer) return System.Address is TP : Tptr; function To_CP is new Unchecked_Conversion (Address, Code_Proc); begin TP := new Thread (Size, Prio, Parm, To_CP (Code)); return To_Addr (TP'Identity); end Create_Thread; -------------------- -- Destroy_Thread -- -------------------- procedure Destroy_Thread (Id : Address) is Tid : Task_Id := To_Id (Id); begin Abort_Task (Tid); end Destroy_Thread; ---------------- -- Get_Thread -- ---------------- procedure Get_Thread (Id : Address; Thread : Address) is use System.OS_Interface; Thr : Thread_Id; for Thr use at Thread; begin Thr := Task_Primitives.Operations.Get_Thread_Id (To_Id (Id)); end Get_Thread; end GNAT.Threads;