File : a-caldel.ads
1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS --
4 -- --
5 -- A D A . C A L E N D A R . D E L A Y S --
6 -- --
7 -- S p e c --
8 -- --
9 -- Copyright (C) 1992-2013, 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 -- This package implements Calendar.Time delays using protected objects
33
34 -- Note: the compiler generates direct calls to this interface, in the
35 -- processing of time types.
36
37 package Ada.Calendar.Delays is
38
39 procedure Delay_For (D : Duration);
40 -- Delay until an interval of length (at least) D seconds has passed, or
41 -- the task is aborted to at least the current ATC nesting level. This is
42 -- an abort completion point. The body of this procedure must perform all
43 -- the processing required for an abort point.
44
45 procedure Delay_Until (T : Time);
46 -- Delay until Clock has reached (at least) time T, or the task is aborted
47 -- to at least the current ATC nesting level. The body of this procedure
48 -- must perform all the processing required for an abort point.
49
50 function To_Duration (T : Time) return Duration;
51 -- Convert Time to Duration elapsed since UNIX epoch
52
53 end Ada.Calendar.Delays;