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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [ada/] [a-retide.adb] - Blame information for rev 706

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1 706 jeremybenn
------------------------------------------------------------------------------
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--                                                                          --
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--                  GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS                --
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--                                                                          --
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--                   A D A . R E A L _ T I M E . D E L A Y S                --
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--                                                                          --
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--                                  B o d y                                 --
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--                                                                          --
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--         Copyright (C) 1992-2010, Free Software Foundation, Inc.          --
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--                                                                          --
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-- GNARL is free software; you can  redistribute it  and/or modify it under --
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-- terms of the  GNU General Public License as published  by the Free Soft- --
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-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
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-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
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--                                                                          --
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-- As a special exception under Section 7 of GPL version 3, you are granted --
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-- additional permissions described in the GCC Runtime Library Exception,   --
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-- version 3.1, as published by the Free Software Foundation.               --
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--                                                                          --
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-- You should have received a copy of the GNU General Public License and    --
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-- a copy of the GCC Runtime Library Exception along with this program;     --
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-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
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-- <http://www.gnu.org/licenses/>.                                          --
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--                                                                          --
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-- GNARL was developed by the GNARL team at Florida State University.       --
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-- Extensive contributions were provided by Ada Core Technologies, Inc.     --
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--                                                                          --
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------------------------------------------------------------------------------
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with Ada.Exceptions;
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with System.Tasking;
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with System.Task_Primitives.Operations;
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package body Ada.Real_Time.Delays is
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   package STPO renames System.Task_Primitives.Operations;
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   ----------------
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   -- Local Data --
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   ----------------
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   Absolute_RT : constant := 2;
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   -----------------
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   -- Delay_Until --
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   -----------------
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   procedure Delay_Until (T : Time) is
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      Self_Id : constant System.Tasking.Task_Id := STPO.Self;
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   begin
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      --  If pragma Detect_Blocking is active, Program_Error must be
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      --  raised if this potentially blocking operation is called from a
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      --  protected action.
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      if System.Tasking.Detect_Blocking
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        and then Self_Id.Common.Protected_Action_Nesting > 0
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      then
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         Ada.Exceptions.Raise_Exception
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           (Program_Error'Identity, "potentially blocking operation");
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      else
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         STPO.Timed_Delay (Self_Id, To_Duration (T), Absolute_RT);
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      end if;
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   end Delay_Until;
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   -----------------
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   -- To_Duration --
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   -----------------
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   function To_Duration (T : Time) return Duration is
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   begin
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      return To_Duration (Time_Span (T));
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   end To_Duration;
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end Ada.Real_Time.Delays;

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