1 ------------------------------------------------------------------------------
3 -- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS --
5 -- 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 . --
10 -- Copyright (C) 1992-2005, Free Software Foundation, Inc. --
12 -- GNARL is free software; you can redistribute it and/or modify it under --
13 -- terms of the GNU General Public License as published by the Free Soft- --
14 -- ware Foundation; either version 2, or (at your option) any later ver- --
15 -- sion. GNARL is distributed in the hope that it will be useful, but WITH- --
16 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
17 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
18 -- for more details. You should have received a copy of the GNU General --
19 -- Public License distributed with GNARL; see file COPYING. If not, write --
20 -- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
21 -- Boston, MA 02110-1301, USA. --
23 -- As a special exception, if other files instantiate generics from this --
24 -- unit, or you link this unit with other files to produce an executable, --
25 -- this unit does not by itself cause the resulting executable to be --
26 -- covered by the GNU General Public License. This exception does not --
27 -- however invalidate any other reasons why the executable file might be --
28 -- covered by the GNU Public License. --
30 -- GNARL was developed by the GNARL team at Florida State University. --
31 -- Extensive contributions were provided by Ada Core Technologies, Inc. --
33 ------------------------------------------------------------------------------
35 -- This is a VxWorks version of this package where foreign threads are
38 separate (System.Task_Primitives.Operations)
39 package body Specific is
41 ATCB_Key : aliased System.Address := System.Null_Address;
42 -- Key used to find the Ada Task_Id associated with a thread
44 ATCB_Key_Addr : System.Address := ATCB_Key'Address;
45 pragma Export (Ada, ATCB_Key_Addr, "__gnat_ATCB_key_addr");
46 -- Exported to support the temporary AE653 task registration
47 -- implementation. This mechanism is used to minimize impact on other
57 Result := taskVarDelete (taskIdSelf, ATCB_Key'Access);
58 pragma Assert (Result /= ERROR);
65 procedure Initialize is
74 function Is_Valid_Task return Boolean is
76 return taskVarGet (taskIdSelf, ATCB_Key'Access) /= ERROR;
83 procedure Set (Self_Id : Task_Id) is
87 if taskVarGet (0, ATCB_Key'Access) = ERROR then
88 Result := taskVarAdd (0, ATCB_Key'Access);
89 pragma Assert (Result = OK);
92 ATCB_Key := To_Address (Self_Id);
99 function Self return Task_Id is
101 return To_Task_Id (ATCB_Key);