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171 | ------------------------------------------------------------------------------
-- --
-- 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) 1992-2023, 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. --
-- --
------------------------------------------------------------------------------
-- This is the Ravenscar version of this package
with System.Task_Primitives.Operations;
-- used for Self
-- Is_Task_Context
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.Restricted.Stages;
-- used for Restricted_Terminated
pragma Warnings (On);
package body Ada.Task_Identification with
SPARK_Mode => Off
is
use System.Tasking.Restricted.Stages;
-----------------------
-- 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
raise Program_Error;
end Abort_Task;
----------------------------
-- Activation_Is_Complete --
----------------------------
function Activation_Is_Complete (T : Task_Id) return Boolean is
use type System.Tasking.Task_States;
begin
if T = Null_Task_Id then
raise Program_Error;
else
return T.Common.State /= System.Tasking.Unactivated;
end if;
end Activation_Is_Complete;
-----------------
-- 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
-- It is a bounded error to call this function from an interrupt
-- handler (ARM C.7.1, par. 17), so that we raise Program_Error
-- in that case.
if not System.Task_Primitives.Operations.Is_Task_Context then
raise Program_Error;
end if;
return Convert_Ids (System.Task_Primitives.Operations.Self);
end Current_Task;
----------------------
-- Environment_Task --
----------------------
function Environment_Task return Task_Id is
begin
return Convert_Ids (System.Task_Primitives.Operations.Environment_Task);
end Environment_Task;
-----------
-- Image --
-----------
function Image (T : Task_Id) return String is
pragma Unreferenced (T);
begin
return "";
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 False;
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 Restricted_Terminated (Convert_Ids (T));
end if;
end Is_Terminated;
end Ada.Task_Identification;
|