| ------------------------------------------------------------------------------ |
| -- -- |
| -- 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 -- |
| -- -- |
| -- Copyright (C) 1992-2006, 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, 51 Franklin Street, Fifth Floor, -- |
| -- Boston, MA 02110-1301, 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. -- |
| -- -- |
| -- GNAT was originally developed by the GNAT team at New York University. -- |
| -- Extensive contributions were provided by Ada Core Technologies Inc. -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| with System.Address_Image; |
| with System.Parameters; |
| with System.Soft_Links; |
| with System.Task_Primitives.Operations; |
| with Unchecked_Conversion; |
| |
| pragma Warnings (Off); |
| -- Allow withing of non-Preelaborated units in Ada 2005 mode where this |
| -- package will be categorized as Preelaborate. See AI-362 for details. |
| -- It is safe in the context of the run-time to violate the rules! |
| |
| with System.Tasking.Utilities; |
| -- Used for Abort_Tasks |
| |
| pragma Warnings (On); |
| |
| package body Ada.Task_Identification is |
| |
| use System.Parameters; |
| |
| package STPO renames System.Task_Primitives.Operations; |
| |
| ----------------------- |
| -- 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.Utilities.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 |
| function To_Address is new |
| Unchecked_Conversion (Task_Id, System.Address); |
| |
| begin |
| if T = Null_Task_Id then |
| return ""; |
| |
| elsif T.Common.Task_Image_Len = 0 then |
| return System.Address_Image (To_Address (T)); |
| |
| else |
| return T.Common.Task_Image (1 .. T.Common.Task_Image_Len) |
| & "_" & System.Address_Image (To_Address (T)); |
| end if; |
| end Image; |
| |
| ----------------- |
| -- Is_Callable -- |
| ----------------- |
| |
| function Is_Callable (T : Task_Id) return Boolean is |
| Result : Boolean; |
| Id : constant System.Tasking.Task_Id := Convert_Ids (T); |
| begin |
| if T = Null_Task_Id then |
| raise Program_Error; |
| else |
| System.Soft_Links.Abort_Defer.all; |
| |
| if Single_Lock then |
| STPO.Lock_RTS; |
| end if; |
| |
| STPO.Write_Lock (Id); |
| Result := Id.Callable; |
| STPO.Unlock (Id); |
| |
| if Single_Lock then |
| STPO.Unlock_RTS; |
| end if; |
| |
| System.Soft_Links.Abort_Undefer.all; |
| return Result; |
| end if; |
| end Is_Callable; |
| |
| ------------------- |
| -- Is_Terminated -- |
| ------------------- |
| |
| function Is_Terminated (T : Task_Id) return Boolean is |
| Result : Boolean; |
| Id : constant System.Tasking.Task_Id := Convert_Ids (T); |
| |
| use System.Tasking; |
| |
| begin |
| if T = Null_Task_Id then |
| raise Program_Error; |
| else |
| System.Soft_Links.Abort_Defer.all; |
| |
| if Single_Lock then |
| STPO.Lock_RTS; |
| end if; |
| |
| STPO.Write_Lock (Id); |
| Result := Id.Common.State = Terminated; |
| STPO.Unlock (Id); |
| |
| if Single_Lock then |
| STPO.Unlock_RTS; |
| end if; |
| |
| System.Soft_Links.Abort_Undefer.all; |
| return Result; |
| end if; |
| end Is_Terminated; |
| |
| end Ada.Task_Identification; |
