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-- Ada Web Server --
-- --
-- Copyright (C) 2000-2014, AdaCore --
-- --
-- This library is free software; you can redistribute it and/or modify --
-- it under terms of the GNU General Public License as published by the --
-- Free Software Foundation; either version 3, or (at your option) any --
-- later version. This library is distributed in the hope that it will be --
-- useful, but WITHOUT 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/>. --
-- --
-- As a special exception, if other files instantiate generics from this --
-- unit, or you link this unit with other files to produce an executable, --
-- this unit does not by itself cause the resulting executable to be --
-- covered by the GNU General Public License. This exception does not --
-- however invalidate any other reasons why the executable file might be --
-- covered by the GNU Public License. --
------------------------------------------------------------------------------
pragma Ada_2012;
-- This package provides a service to build Callbacks which can support
-- user's data. It is possible to build a new dispatcher by inheriting the
-- handler type and to provides the Dispatch routine.
with Ada.Finalization;
with AWS.Response;
with AWS.Status;
with AWS.Utils;
package AWS.Dispatchers is
type Handler is abstract new Ada.Finalization.Controlled
and AWS.Utils.Clonable with private;
function Dispatch
(Dispatcher : Handler;
Request : Status.Data) return Response.Data is abstract;
-- Call the appropriate inherited dispatcher
function Ref_Counter (Dispatcher : Handler) return Natural;
-- Returns the reference counter for Handler. If 0 is returned then this
-- object is not referenced anymore, it is safe to deallocate resources.
type Handler_Class_Access is access all Handler'Class;
procedure Free (Dispatcher : in out Handler_Class_Access) with Inline;
-- Release memory associated with the dispatcher
private
type Handler is abstract new Ada.Finalization.Controlled
and AWS.Utils.Clonable
with record
Ref_Counter : Utils.Counter_Access;
end record;
overriding procedure Initialize (Dispatcher : in out Handler);
overriding procedure Adjust (Dispatcher : in out Handler);
overriding procedure Finalize (Dispatcher : in out Handler);
-- Initialize/Adjust/Finalize is doing the reference counting, children
-- should just call these routines if possible. It is possible to know if
-- no more object are referenced by calling Ref_Counter below.
end AWS.Dispatchers;
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