Implement -mmemcpy-strategy= and -mmemset-strategy= options
[official-gcc.git] / gcc / ada / s-tasinf-vxworks.ads
blobdb6bc56af605face8a65206e8daf5a904d0abdc0
1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT COMPILER COMPONENTS --
4 -- --
5 -- S Y S T E M . T A S K _ I N F O --
6 -- --
7 -- S p e c --
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 -- 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. --
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 -- GNAT was originally developed by the GNAT team at New York University. --
28 -- Extensive contributions were provided by Ada Core Technologies Inc. --
29 -- --
30 ------------------------------------------------------------------------------
32 -- This package contains the definitions and routines associated with the
33 -- implementation and use of the Task_Info pragma. It is specialized
34 -- appropriately for targets that make use of this pragma.
36 -- Note: the compiler generates direct calls to this interface, via Rtsfind.
37 -- Any changes to this interface may require corresponding compiler changes.
39 -- This unit may be used directly from an application program by providing
40 -- an appropriate WITH, and the interface can be expected to remain stable.
42 -- This is the VxWorks version of this package
44 with Interfaces.C;
46 package System.Task_Info is
47 pragma Preelaborate;
48 pragma Elaborate_Body;
49 -- To ensure that a body is allowed
51 -----------------------------------------
52 -- Implementation of Task_Info Feature --
53 -----------------------------------------
55 -- The Task_Info pragma:
57 -- pragma Task_Info (EXPRESSION);
59 -- allows the specification on a task by task basis of a value of type
60 -- System.Task_Info.Task_Info_Type to be passed to a task when it is
61 -- created. The specification of this type, and the effect on the task
62 -- that is created is target dependent.
64 -- The Task_Info pragma appears within a task definition (compare the
65 -- definition and implementation of pragma Priority). If no such pragma
66 -- appears, then the value Unspecified_Task_Info is passed. If a pragma
67 -- is present, then it supplies an alternative value. If the argument of
68 -- the pragma is a discriminant reference, then the value can be set on
69 -- a task by task basis by supplying the appropriate discriminant value.
71 -- Note that this means that the type used for Task_Info_Type must be
72 -- suitable for use as a discriminant (i.e. a scalar or access type).
74 ------------------
75 -- Declarations --
76 ------------------
78 subtype Task_Info_Type is Interfaces.C.int;
79 -- This is a CPU number (natural - CPUs are 0-indexed on VxWorks)
81 use type Interfaces.C.int;
83 Unspecified_Task_Info : constant Task_Info_Type := -1;
84 -- Value passed to task in the absence of a Task_Info pragma
85 -- This value means do not try to set the CPU affinity
87 end System.Task_Info;