gcc/ada/a-retide.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                 GNU ADA RUNTIME LIBRARY (GNARL) COMPONENTS               --
   4 --                                                                          --
   5 --                   A D A . R E A L _ T I M E . D E L A Y S                --
   6 --                                                                          --
   7 --                                  B o d y                                 --
   8 --                                                                          --
   9 --                                                                          --
  10 --         Copyright (C) 1992-2001, Free Software Foundation, Inc.          --
  11 --                                                                          --
  12 -- GNARL is free software; you can  redistribute it  and/or modify it under --
  13 -- terms of the  GNU General Public License as published  by the Free Soft- --
  14 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  15 -- sion. GNARL is distributed in the hope that it will be useful, but WITH- --
  16 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  17 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  18 -- for  more details.  You should have  received  a copy of the GNU General --
  19 -- Public License  distributed with GNARL; see file COPYING.  If not, write --
  20 -- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
  21 -- MA 02111-1307, USA.                                                      --
  22 --                                                                          --
  23 -- As a special exception,  if other files  instantiate  generics from this --
  24 -- unit, or you link  this unit with other files  to produce an executable, --
  25 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  26 -- covered  by the  GNU  General  Public  License.  This exception does not --
  27 -- however invalidate  any other reasons why  the executable file  might be --
  28 -- covered by the  GNU Public License.                                      --
  29 --                                                                          --
  30 -- GNARL was developed by the GNARL team at Florida State University.       --
  31 -- Extensive contributions were provided by Ada Core Technologies, Inc.     --
  32 --                                                                          --
  33 ------------------------------------------------------------------------------
  34
  35 with System.Task_Primitives.Operations;
  36 --  Used for Timed_Delay
  37
  38 package body Ada.Real_Time.Delays is
  39
  40    package STPO renames System.Task_Primitives.Operations;
  41
  42    Absolute_RT : constant := 2;
  43
  44    -----------------
  45    -- Delay_Until --
  46    -----------------
  47
  48    procedure Delay_Until (T : Time) is
  49    begin
  50       STPO.Timed_Delay (STPO.Self, To_Duration (T), Absolute_RT);
  51    end Delay_Until;
  52
  53    -----------------
  54    -- To_Duration --
  55    -----------------
  56
  57    function To_Duration (T : Time) return Duration is
  58    begin
  59       return To_Duration (Time_Span (T));
  60    end To_Duration;
  61
  62 end Ada.Real_Time.Delays;