------------------------------------------------------------------------------
-- --
-- GNAT RUN-TIME COMPONENTS --
-- --
-- A D A . D I S P A T C H I N G . E D F --
-- --
-- S p e c --
-- --
-- This specification is derived from the Ada Reference Manual for use with --
-- GNAT. In accordance with the copyright of that document, you can freely --
-- copy and modify this specification, provided that if you redistribute a --
-- modified version, any changes that you have made are clearly indicated. --
-- --
------------------------------------------------------------------------------
-- This unit is not implemented in typical GNAT implementations that lie on
-- top of operating systems, because it is infeasible to implement in such
-- environments.
-- If a target environment provides appropriate support for this package,
-- then the Unimplemented_Unit pragma should be removed from this spec and
-- an appropriate body provided.
with Ada.Real_Time;
with Ada.Task_Identification;
package Ada.Dispatching.EDF is
pragma Preelaborate;
pragma Unimplemented_Unit;
subtype Deadline is Ada.Real_Time.Time;
Default_Deadline : constant Deadline := Ada.Real_Time.Time_Last;
procedure Set_Deadline
(D : Deadline;
T : Ada.Task_Identification.Task_Id :=
Ada.Task_Identification.Current_Task);
procedure Delay_Until_And_Set_Deadline
(Delay_Until_Time : Ada.Real_Time.Time;
Deadline_Offset : Ada.Real_Time.Time_Span);
function Get_Deadline
(T : Ada.Task_Identification.Task_Id :=
Ada.Task_Identification.Current_Task)
return Deadline
with
SPARK_Mode,
Volatile_Function,
Global => Ada.Task_Identification.Tasking_State;
end Ada.Dispatching.EDF;