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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;