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1 706 jeremybenn
------------------------------------------------------------------------------
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--                                                                          --
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--                         GNAT RUN-TIME COMPONENTS                         --
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--                                                                          --
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--      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     --
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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 System;
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package Ada.Execution_Time.Group_Budgets is
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   pragma Preelaborate;
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   pragma Unimplemented_Unit;
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   type Group_Budget is tagged limited private;
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   type Group_Budget_Handler is access
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      protected procedure (GB : in out Group_Budget);
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   type Task_Array is
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      array (Positive range <>) of Ada.Task_Identification.Task_Id;
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   Min_Handler_Ceiling : constant System.Any_Priority :=
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                           System.Any_Priority'First;
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   --  Initial value is an arbitrary choice ???
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   procedure Add_Task
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     (GB : in out Group_Budget;
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      T  : Ada.Task_Identification.Task_Id);
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   procedure Remove_Task
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     (GB : in out Group_Budget;
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      T  : Ada.Task_Identification.Task_Id);
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   function Is_Member
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     (GB : Group_Budget;
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      T  : Ada.Task_Identification.Task_Id) return Boolean;
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   function Is_A_Group_Member
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     (T : Ada.Task_Identification.Task_Id) return Boolean;
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   function Members (GB : Group_Budget) return Task_Array;
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   procedure Replenish
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     (GB : in out Group_Budget;
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      To : Ada.Real_Time.Time_Span);
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   procedure Add
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     (GB       : in out Group_Budget;
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      Interval : Ada.Real_Time.Time_Span);
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   function Budget_Has_Expired (GB : Group_Budget) return Boolean;
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   function Budget_Remaining
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     (GB : Group_Budget) return Ada.Real_Time.Time_Span;
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   procedure Set_Handler
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     (GB      : in out Group_Budget;
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      Handler : Group_Budget_Handler);
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   function Current_Handler (GB : Group_Budget) return Group_Budget_Handler;
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   procedure Cancel_Handler
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     (GB        : in out Group_Budget;
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      Cancelled : out Boolean);
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   Group_Budget_Error : exception;
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private
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   type Group_Budget is tagged limited null record;
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end Ada.Execution_Time.Group_Budgets;

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