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------------------------------------------------------------------------------ -- -- -- 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) 1992-2009, 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 3, 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. -- -- -- -- As a special exception under Section 7 of GPL version 3, you are granted -- -- additional permissions described in the GCC Runtime Library Exception, -- -- version 3.1, as published by the Free Software Foundation. -- -- -- -- You should have received a copy of the GNU General Public License and -- -- a copy of the GCC Runtime Library Exception along with this program; -- -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- -- <http://www.gnu.org/licenses/>. -- -- -- -- 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; with System.Task_Primitives.Operations; with Ada.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; 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 Ada.Unchecked_Conversion (Task_Id, System.Task_Primitives.Task_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;