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Diffstat (limited to 'gcc/ada/a-taside.adb')
| -rw-r--r-- | gcc/ada/a-taside.adb | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/gcc/ada/a-taside.adb b/gcc/ada/a-taside.adb new file mode 100644 index 00000000000..2c444a3e2de --- /dev/null +++ b/gcc/ada/a-taside.adb @@ -0,0 +1,162 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT RUN-TIME COMPONENTS -- +-- -- +-- A D A . T A S K _ I D E N T I F I C A T I O N -- +-- -- +-- B o d y -- +-- -- +-- $Revision: 1.20 $ +-- -- +-- Copyright (C) 1992-2001 Free Software Foundation, 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 was originally developed by the GNAT team at New York University. -- +-- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). -- +-- -- +------------------------------------------------------------------------------ + +with System.Address_Image; +-- used for the function itself + +with System.Tasking; +-- used for Task_List + +with System.Tasking.Stages; +-- used for Terminated +-- Abort_Tasks + +with System.Tasking.Rendezvous; +-- used for Callable + +with System.Task_Primitives.Operations; +-- used for Self + +with System.Task_Info; +use type System.Task_Info.Task_Image_Type; + +with Unchecked_Conversion; + +package body Ada.Task_Identification is + + ----------------------- + -- Local Subprograms -- + ----------------------- + + function Convert_Ids (T : Task_Id) return System.Tasking.Task_ID; + function Convert_Ids (T : System.Tasking.Task_ID) return Task_Id; + pragma Inline (Convert_Ids); + -- Conversion functions between different forms of Task_Id + + --------- + -- "=" -- + --------- + + function "=" (Left, Right : Task_Id) return Boolean is + begin + return System.Tasking."=" (Convert_Ids (Left), Convert_Ids (Right)); + end "="; + + ----------------- + -- Abort_Task -- + ---------------- + + procedure Abort_Task (T : Task_Id) is + begin + if T = Null_Task_Id then + raise Program_Error; + else + System.Tasking.Stages.Abort_Tasks + (System.Tasking.Task_List'(1 => Convert_Ids (T))); + end if; + end Abort_Task; + + ----------------- + -- Convert_Ids -- + ----------------- + + function Convert_Ids (T : Task_Id) return System.Tasking.Task_ID is + begin + return System.Tasking.Task_ID (T); + end Convert_Ids; + + function Convert_Ids (T : System.Tasking.Task_ID) return Task_Id is + begin + return Task_Id (T); + end Convert_Ids; + + ------------------ + -- Current_Task -- + ------------------ + + function Current_Task return Task_Id is + begin + return Convert_Ids (System.Task_Primitives.Operations.Self); + end Current_Task; + + ----------- + -- Image -- + ----------- + + function Image (T : Task_Id) return String is + use System.Task_Info; + function To_Address is new + Unchecked_Conversion (Task_Id, System.Address); + + begin + if T = Null_Task_Id then + return ""; + + elsif T.Common.Task_Image = null then + return System.Address_Image (To_Address (T)); + + else + return T.Common.Task_Image.all + & "_" & System.Address_Image (To_Address (T)); + end if; + end Image; + + ----------------- + -- Is_Callable -- + ----------------- + + function Is_Callable (T : Task_Id) return Boolean is + begin + if T = Null_Task_Id then + raise Program_Error; + else + return System.Tasking.Rendezvous.Callable (Convert_Ids (T)); + end if; + end Is_Callable; + + ------------------- + -- Is_Terminated -- + ------------------- + + function Is_Terminated (T : Task_Id) return Boolean is + begin + if T = Null_Task_Id then + raise Program_Error; + else + return System.Tasking.Stages.Terminated (Convert_Ids (T)); + end if; + end Is_Terminated; + +end Ada.Task_Identification; |