| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT RUNTIME COMPONENTS -- |
| -- -- |
| -- G N A T . T H R E A D S -- |
| -- -- |
| -- B o d y -- |
| -- -- |
| -- $Revision: 1.6 $ |
| -- -- |
| -- 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; |
