File : s-tpopsp-vxworks-rtp.adb
1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS --
4 -- --
5 -- SYSTEM.TASK_PRIMITIVES.OPERATIONS.SPECIFIC --
6 -- --
7 -- B o d y --
8 -- --
9 -- Copyright (C) 1992-2011, Free Software Foundation, Inc. --
10 -- --
11 -- GNAT 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. --
17 -- --
18 -- --
19 -- --
20 -- --
21 -- --
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/>. --
26 -- --
27 -- GNARL was developed by the GNARL team at Florida State University. --
28 -- Extensive contributions were provided by Ada Core Technologies, Inc. --
29 -- --
30 ------------------------------------------------------------------------------
31
32 -- This is a VxWorks version of this package for RTPs where foreign threads
33 -- are recognized. The implementation is based on VxWorks tlsLib or oldTlsLib.
34
35 separate (System.Task_Primitives.Operations)
36 package body Specific is
37
38 ATCB_Key : int := 0;
39 -- Key used to find the Ada Task_Id associated with a thread
40
41 ----------------
42 -- Initialize --
43 ----------------
44
45 procedure Initialize is
46 begin
47 ATCB_Key := tlsKeyCreate;
48 pragma Assert (ATCB_Key /= ERROR);
49 end Initialize;
50
51 -------------------
52 -- Is_Valid_Task --
53 -------------------
54
55 function Is_Valid_Task return Boolean is
56 begin
57 return tlsValueGet (ATCB_Key) /= System.Null_Address;
58 end Is_Valid_Task;
59
60 ---------
61 -- Set --
62 ---------
63
64 procedure Set (Self_Id : Task_Id) is
65 Result : STATUS;
66 begin
67 Result := tlsValueSet (ATCB_Key, To_Address (Self_Id));
68 pragma Assert (Result /= ERROR);
69 end Set;
70
71 ----------
72 -- Self --
73 ----------
74
75 function Self return Task_Id is
76 begin
77 return To_Task_Id (tlsValueGet (ATCB_Key));
78 end Self;
79
80 end Specific;