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