1 ------------------------------------------------------------------------------
3 -- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS --
5 -- SYSTEM.TASK_PRIMITIVES.OPERATIONS.SPECIFIC --
9 -- Copyright (C) 1992-2007, Free Software Foundation, Inc. --
11 -- GNARL is free software; you can redistribute it and/or modify it under --
12 -- terms of the GNU General Public License as published by the Free Soft- --
13 -- ware Foundation; either version 2, or (at your option) any later ver- --
14 -- sion. GNARL is distributed in the hope that it will be useful, but WITH- --
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
16 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
17 -- for more details. You should have received a copy of the GNU General --
18 -- Public License distributed with GNARL; see file COPYING. If not, write --
19 -- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
20 -- Boston, MA 02110-1301, USA. --
22 -- As a special exception, if other files instantiate generics from this --
23 -- unit, or you link this unit with other files to produce an executable, --
24 -- this unit does not by itself cause the resulting executable to be --
25 -- covered by the GNU General Public License. This exception does not --
26 -- however invalidate any other reasons why the executable file might be --
27 -- covered by the GNU Public License. --
29 -- GNARL was developed by the GNARL team at Florida State University. --
30 -- Extensive contributions were provided by Ada Core Technologies, Inc. --
32 ------------------------------------------------------------------------------
34 -- This is a VxWorks version of this package where foreign threads are
37 separate (System.Task_Primitives.Operations)
38 package body Specific is
40 ATCB_Key : aliased System.Address := System.Null_Address;
41 -- Key used to find the Ada Task_Id associated with a thread
43 ATCB_Key_Addr : System.Address := ATCB_Key'Address;
44 pragma Export (Ada, ATCB_Key_Addr, "__gnat_ATCB_key_addr");
45 -- Exported to support the temporary AE653 task registration
46 -- implementation. This mechanism is used to minimize impact on other
56 Result := taskVarDelete (taskIdSelf, ATCB_Key'Access);
57 pragma Assert (Result /= ERROR);
64 procedure Initialize is
73 function Is_Valid_Task return Boolean is
75 return taskVarGet (taskIdSelf, ATCB_Key'Access) /= ERROR;
82 procedure Set (Self_Id : Task_Id) is
86 if taskVarGet (0, ATCB_Key'Access) = ERROR then
87 Result := taskVarAdd (0, ATCB_Key'Access);
88 pragma Assert (Result = OK);
91 ATCB_Key := To_Address (Self_Id);
98 function Self return Task_Id is
100 return To_Task_Id (ATCB_Key);