Ada Programming/Libraries/Ada.Dispatching.EDF

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This language feature is only available from Ada 2005 on.

Ada.Dispatching.EDF is a unit of the Predefined Language Environment since Ada 2005.

Specification

--                     Standard Ada library specification
--   Copyright (c) 2003-2018 Maxim Reznik <reznikmm@gmail.com>
--   Copyright (c) 2004-2016 AXE Consultants
--   Copyright (c) 2004, 2005, 2006 Ada-Europe
--   Copyright (c) 2000 The MITRE Corporation, Inc.
--   Copyright (c) 1992, 1993, 1994, 1995 Intermetrics, Inc.
--   SPDX-License-Identifier: BSD-3-Clause and LicenseRef-AdaReferenceManual
-- -------------------------------------------------------------------------

with Ada.Real_Time;
with Ada.Task_Identification;

package Ada.Dispatching.EDF is

   subtype Deadline is Ada.Real_Time.Time;

   Default_Deadline : constant Deadline := Ada.Real_Time.Time_Last;

   procedure Set_Deadline (D : in Deadline;
                           T : in Ada.Task_Identification.Task_Id
                             := Ada.Task_Identification.Current_Task);

   procedure Delay_Until_And_Set_Deadline
    (Delay_Until_Time : in Ada.Real_Time.Time;
     Deadline_Offset  : in Ada.Real_Time.Time_Span);

   function Get_Deadline (T : Ada.Task_Identification.Task_Id
                            := Ada.Task_Identification.Current_Task)
     return Deadline;

end Ada.Dispatching.EDF;

See also

Wikibook

• Ada Programming/Libraries/Ada

External examples

• Search for examples of Ada.Dispatching.EDF in: Rosetta Code, GitHub (gists), any Alire crate or this Wikibook.
• Search for posts related to Ada.Dispatching.EDF in: Stack Overflow, comp.lang.ada or any Ada related page.

Ada Reference Manual

Ada 2005

• D.2.6: Earliest Deadline First Dispatching ^[Annotated]

Ada 2012

• D.2.6: Earliest Deadline First Dispatching ^[Annotated]

Open-Source Implementations

FSF GNAT

• Specification: a-disedf.ads

drake

• Specification: tasking/a-disedf.ads