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[official-gcc.git] / gcc / ada / s-tadeca.adb
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1 ------------------------------------------------------------------------------
2 -- --
3 -- GNU ADA RUN-TIME LIBRARY (GNARL) COMPONENTS --
4 -- --
5 -- SYSTEM.TASKING.ASYNC_DELAYS.ENQUEUE_CALENDAR --
6 -- --
7 -- B o d y --
8 -- --
9 -- Copyright (C) 1998-2001 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 2, or (at your option) any later ver- --
14 -- sion. GNARL 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. See the GNU General Public License --
17 -- for more details. You should have received a copy of the GNU General --
18 -- Public License distributed with GNARL; see file COPYING. If not, write --
19 -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
20 -- MA 02111-1307, USA. --
21 -- --
22 -- As a special exception, if other files instantiate generics from this --
23 -- unit, or you link this unit with other files to produce an executable, --
24 -- this unit does not by itself cause the resulting executable to be --
25 -- covered by the GNU General Public License. This exception does not --
26 -- however invalidate any other reasons why the executable file might be --
27 -- covered by the GNU Public License. --
28 -- --
29 -- GNARL was developed by the GNARL team at Florida State University. --
30 -- Extensive contributions were provided by Ada Core Technologies, Inc. --
31 -- --
32 ------------------------------------------------------------------------------
34 with Ada.Calendar.Delays;
35 with System.Task_Primitives.Operations;
36 with System.Tasking.Initialization;
38 function System.Tasking.Async_Delays.Enqueue_Calendar
39 (T : Ada.Calendar.Time;
40 D : Delay_Block_Access)
41 return Boolean
43 use type Ada.Calendar.Time;
44 begin
45 if T <= Ada.Calendar.Clock then
46 D.Timed_Out := True;
47 System.Task_Primitives.Operations.Yield;
48 return False;
49 end if;
51 System.Tasking.Initialization.Defer_Abort
52 (System.Task_Primitives.Operations.Self);
53 Time_Enqueue (Ada.Calendar.Delays.To_Duration (T), D);
54 return True;
55 end System.Tasking.Async_Delays.Enqueue_Calendar;