1 ------------------------------------------------------------------------------
3 -- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS --
5 -- SYSTEM.TASK_PRIMITIVES.OPERATIONS.SPECIFIC --
9 -- Copyright (C) 1992-2011, 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 3, or (at your option) any later ver- --
14 -- sion. GNAT 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. --
18 -- As a special exception under Section 7 of GPL version 3, you are granted --
19 -- additional permissions described in the GCC Runtime Library Exception, --
20 -- version 3.1, as published by the Free Software Foundation. --
22 -- You should have received a copy of the GNU General Public License and --
23 -- a copy of the GCC Runtime Library Exception along with this program; --
24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
25 -- <http://www.gnu.org/licenses/>. --
27 -- GNARL was developed by the GNARL team at Florida State University. --
28 -- Extensive contributions were provided by Ada Core Technologies, Inc. --
30 ------------------------------------------------------------------------------
32 -- This is a VxWorks version of this package where foreign threads are
35 separate (System.Task_Primitives.Operations)
36 package body Specific is
38 ATCB_Key : aliased System.Address := System.Null_Address;
39 -- Key used to find the Ada Task_Id associated with a thread
41 ATCB_Key_Addr : System.Address := ATCB_Key'Address;
42 pragma Export (Ada, ATCB_Key_Addr, "__gnat_ATCB_key_addr");
43 -- Exported to support the temporary AE653 task registration
44 -- implementation. This mechanism is used to minimize impact on other
51 procedure Initialize is
60 function Is_Valid_Task return Boolean is
62 return taskVarGet (taskIdSelf, ATCB_Key'Access) /= ERROR;
69 procedure Set (Self_Id : Task_Id) is
73 -- If argument is null, destroy task specific data, to make API
74 -- consistent with other platforms, and thus compatible with the
75 -- shared version of s-tpoaal.adb.
77 if Self_Id = null then
78 Result := taskVarDelete (taskIdSelf, ATCB_Key'Access);
79 pragma Assert (Result /= ERROR);
83 if taskVarGet (0, ATCB_Key'Access) = ERROR then
84 Result := taskVarAdd (0, ATCB_Key'Access);
85 pragma Assert (Result = OK);
88 ATCB_Key := To_Address (Self_Id);
95 function Self return Task_Id is
97 return To_Task_Id (ATCB_Key);