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------------------------------------------------------------------------------
-- --
-- GNAT RUN-TIME COMPONENTS --
-- --
-- A D A . E X E C U T I O N _ T I M E . G R O U P _ B U D G E T S --
-- --
-- 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 System;
package Ada.Execution_Time.Group_Budgets is
pragma Preelaborate;
pragma Unimplemented_Unit;
type Group_Budget is tagged limited private;
type Group_Budget_Handler is access
protected procedure (GB : in out Group_Budget);
type Task_Array is
array (Positive range <>) of Ada.Task_Identification.Task_Id;
Min_Handler_Ceiling : constant System.Any_Priority :=
System.Any_Priority'First;
-- Initial value is an arbitrary choice ???
procedure Add_Task
(GB : in out Group_Budget;
T : Ada.Task_Identification.Task_Id);
procedure Remove_Task
(GB : in out Group_Budget;
T : Ada.Task_Identification.Task_Id);
function Is_Member
(GB : Group_Budget;
T : Ada.Task_Identification.Task_Id) return Boolean;
function Is_A_Group_Member
(T : Ada.Task_Identification.Task_Id) return Boolean;
function Members (GB : Group_Budget) return Task_Array;
procedure Replenish
(GB : in out Group_Budget;
To : Ada.Real_Time.Time_Span);
procedure Add
(GB : in out Group_Budget;
Interval : Ada.Real_Time.Time_Span);
function Budget_Has_Expired (GB : Group_Budget) return Boolean;
function Budget_Remaining
(GB : Group_Budget) return Ada.Real_Time.Time_Span;
procedure Set_Handler
(GB : in out Group_Budget;
Handler : Group_Budget_Handler);
function Current_Handler (GB : Group_Budget) return Group_Budget_Handler;
procedure Cancel_Handler
(GB : in out Group_Budget;
Cancelled : out Boolean);
Group_Budget_Error : exception;
private
type Group_Budget is tagged limited null record;
end Ada.Execution_Time.Group_Budgets;
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