File : 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 -- --
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 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;