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-------------------------------------------------------------------------------
--- --
--- GNAT LIBRARY COMPONENTS --
--- --
--- ADA.CONTAINERS.UNBOUNDED_SYNCHRONIZED_QUEUES --
--- --
--- S p e c --
--- --
--- Copyright (C) 2011, Free Software Foundation, Inc. --
--- --
--- This specification is derived from the Ada Reference Manual for use with --
--- GNAT. The copyright notice above, and the license provisions that follow --
--- apply solely to the contents of the part following the private keyword. --
--- --
--- GNAT is free software; you can redistribute it and/or modify it under --
--- terms of the GNU General Public License as published by the Free Soft- --
--- ware Foundation; either version 3, or (at your option) any later ver- --
--- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
--- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
--- or FITNESS FOR A PARTICULAR PURPOSE. --
--- --
--- As a special exception under Section 7 of GPL version 3, you are granted --
--- additional permissions described in the GCC Runtime Library Exception, --
--- version 3.1, as published by the Free Software Foundation. --
--- --
--- You should have received a copy of the GNU General Public License and --
--- a copy of the GCC Runtime Library Exception along with this program; --
--- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
--- <http://www.gnu.org/licenses/>. --
--- --
--- This unit was originally developed by Matthew J Heaney. --
-------------------------------------------------------------------------------
-
-with System;
-with Ada.Containers.Synchronized_Queue_Interfaces;
-with Ada.Finalization;
-
-generic
- with package Queue_Interfaces is
- new Ada.Containers.Synchronized_Queue_Interfaces (<>);
-
- Default_Ceiling : System.Any_Priority := System.Priority'Last;
-
-package Ada.Containers.Unbounded_Synchronized_Queues is
- pragma Preelaborate;
-
- package Implementation is
-
- -- All identifiers in this unit are implementation defined
-
- pragma Implementation_Defined;
-
- type List_Type is tagged limited private;
-
- procedure Enqueue
- (List : in out List_Type;
- New_Item : Queue_Interfaces.Element_Type);
-
- procedure Dequeue
- (List : in out List_Type;
- Element : out Queue_Interfaces.Element_Type);
-
- function Length (List : List_Type) return Count_Type;
-
- function Max_Length (List : List_Type) return Count_Type;
-
- private
-
- type Node_Type;
- type Node_Access is access Node_Type;
-
- type Node_Type is limited record
- Element : Queue_Interfaces.Element_Type;
- Next : Node_Access;
- end record;
-
- type List_Type is new Ada.Finalization.Limited_Controlled with record
- First, Last : Node_Access;
- Length : Count_Type := 0;
- Max_Length : Count_Type := 0;
- end record;
-
- overriding
- procedure Finalize (List : in out List_Type);
-
- end Implementation;
-
- protected type Queue (Ceiling : System.Any_Priority := Default_Ceiling)
- with Priority => Ceiling is new Queue_Interfaces.Queue with
-
- overriding
- entry Enqueue (New_Item : Queue_Interfaces.Element_Type);
-
- overriding
- entry Dequeue (Element : out Queue_Interfaces.Element_Type);
-
- overriding
- function Current_Use return Count_Type;
-
- overriding
- function Peak_Use return Count_Type;
-
- private
-
- List : Implementation.List_Type;
-
- end Queue;
-
-end Ada.Containers.Unbounded_Synchronized_Queues;