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------------------------------------------------------------------------------
-- --
-- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS --
-- --
-- S Y S T E M . T A S K _ P R I M I T I V E S . O P E R A T I O N S . --
-- S P E C I F I C --
-- --
-- B o d y --
-- --
-- Copyright (C) 1992-2005, Free Software Foundation, Inc. --
-- --
-- GNARL 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. GNARL 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 GNARL; 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. --
-- --
-- GNARL was developed by the GNARL team at Florida State University. --
-- Extensive contributions were provided by Ada Core Technologies, Inc. --
-- --
------------------------------------------------------------------------------
-- This is a VxWorks version of this package where foreign threads are
-- recognized.
separate (System.Task_Primitives.Operations)
package body Specific is
ATCB_Key : aliased System.Address := System.Null_Address;
-- Key used to find the Ada Task_Id associated with a thread
ATCB_Key_Addr : System.Address := ATCB_Key'Address;
pragma Export (Ada, ATCB_Key_Addr, "__gnat_ATCB_key_addr");
-- Exported to support the temporary AE653 task registration
-- implementation. This mechanism is used to minimize impact on other
-- targets.
------------
-- Delete --
------------
procedure Delete is
Result : STATUS;
begin
Result := taskVarDelete (taskIdSelf, ATCB_Key'Access);
pragma Assert (Result /= ERROR);
end Delete;
----------------
-- Initialize --
----------------
procedure Initialize is
begin
null;
end Initialize;
-------------------
-- Is_Valid_Task --
-------------------
function Is_Valid_Task return Boolean is
begin
return taskVarGet (taskIdSelf, ATCB_Key'Access) /= ERROR;
end Is_Valid_Task;
---------
-- Set --
---------
procedure Set (Self_Id : Task_Id) is
Result : STATUS;
begin
if taskVarGet (0, ATCB_Key'Access) = ERROR then
Result := taskVarAdd (0, ATCB_Key'Access);
pragma Assert (Result = OK);
end if;
ATCB_Key := To_Address (Self_Id);
end Set;
----------
-- Self --
----------
function Self return Task_Id is
begin
return To_Task_Id (ATCB_Key);
end Self;
end Specific;
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