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Licensing changes to GPLv3 resp. GPLv3 with GCC Runtime Exception.
[pf3gnuchains/gcc-fork.git] / gcc / ada / s-tadert.adb
1 ------------------------------------------------------------------------------
2 --                                                                          --
3 --                 GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS                 --
4 --                                                                          --
5 --                  SYSTEM.TASKING.ASYNC_DELAYS.ENQUEUE_RT                  --
6 --                                                                          --
7 --                                B o d y                                   --
8 --                                                                          --
9 --          Copyright (C) 1998-2009, Free Software Foundation, Inc.         --
10 --                                                                          --
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.                                     --
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 -- 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 with Ada.Real_Time;
33 with Ada.Real_Time.Delays;
34 with System.Task_Primitives.Operations;
35 with System.Tasking.Initialization;
36
37 function System.Tasking.Async_Delays.Enqueue_RT
38   (T : Ada.Real_Time.Time;
39    D : Delay_Block_Access) return Boolean
40 is
41    use type Ada.Real_Time.Time;  -- for "=" operator
42 begin
43    if T <= Ada.Real_Time.Clock then
44       D.Timed_Out := True;
45       System.Task_Primitives.Operations.Yield;
46       return False;
47    end if;
48
49    System.Tasking.Initialization.Defer_Abort
50      (System.Task_Primitives.Operations.Self);
51    Time_Enqueue (Ada.Real_Time.Delays.To_Duration (T), D);
52    return True;
53 end System.Tasking.Async_Delays.Enqueue_RT;