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[/] [scarts/] [trunk/] [toolchain/] [scarts-gcc/] [gcc-4.1.1/] [gcc/] [ada/] [a-retide.adb] - Rev 20
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------------------------------------------------------------------------------ -- -- -- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS -- -- -- -- A D A . R E A L _ T I M E . D E L A Y S -- -- -- -- B o d y -- -- -- -- Copyright (C) 1992-2005, Free Software Foundation, Inc. -- -- -- -- GNARL is free software; you can redistribute it and/or modify it under -- -- terms of the GNU General Public License as published by the Free Soft- -- -- ware Foundation; either version 2, or (at your option) any later ver- -- -- sion. GNARL is distributed in the hope that it will be useful, but WITH- -- -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- -- for more details. You should have received a copy of the GNU General -- -- Public License distributed with GNARL; see file COPYING. If not, write -- -- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, -- -- Boston, MA 02110-1301, USA. -- -- -- -- As a special exception, if other files instantiate generics from this -- -- unit, or you link this unit with other files to produce an executable, -- -- this unit does not by itself cause the resulting executable to be -- -- covered by the GNU General Public License. This exception does not -- -- however invalidate any other reasons why the executable file might be -- -- covered by the GNU Public License. -- -- -- -- GNARL was developed by the GNARL team at Florida State University. -- -- Extensive contributions were provided by Ada Core Technologies, Inc. -- -- -- ------------------------------------------------------------------------------ with Ada.Exceptions; -- Used for Raise_Exception with System.Tasking; -- Used for Task_Id with System.Task_Primitives.Operations; -- Used for Timed_Delay -- Self package body Ada.Real_Time.Delays is package STPO renames System.Task_Primitives.Operations; ---------------- -- Local Data -- ---------------- Absolute_RT : constant := 2; ----------------- -- Delay_Until -- ----------------- procedure Delay_Until (T : Time) is Self_Id : constant System.Tasking.Task_Id := STPO.Self; begin -- If pragma Detect_Blocking is active, Program_Error must be -- raised if this potentially blocking operation is called from a -- protected action. if System.Tasking.Detect_Blocking and then Self_Id.Common.Protected_Action_Nesting > 0 then Ada.Exceptions.Raise_Exception (Program_Error'Identity, "potentially blocking operation"); else STPO.Timed_Delay (Self_Id, To_Duration (T), Absolute_RT); end if; end Delay_Until; ----------------- -- To_Duration -- ----------------- function To_Duration (T : Time) return Duration is begin return To_Duration (Time_Span (T)); end To_Duration; end Ada.Real_Time.Delays;
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