------------------------------------------------------------------------------ -- -- -- 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;