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Diffstat (limited to 'gcc/ada/g-thread.adb')
| -rw-r--r-- | gcc/ada/g-thread.adb | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/gcc/ada/g-thread.adb b/gcc/ada/g-thread.adb new file mode 100644 index 00000000000..ad6b754106d --- /dev/null +++ b/gcc/ada/g-thread.adb @@ -0,0 +1,111 @@ +------------------------------------------------------------------------------ +-- -- +-- 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; |