File : agpl-http-server-sort_handler-simple_list.adb
------------------------------------------------------------------------------
-- ADAGIO - ADALID - AENEA. --
-- --
-- Copyright (C) 2003 --
-- A. Mosteo. --
-- --
-- Authors: A. Mosteo. (adagio@mosteo.com) --
-- --
-- If you have any questions in regard to this software, please address --
-- them to the above email. --
-- --
-- This program is free software; you can redistribute it and/or modify --
-- it under the terms of the GNU General Public License as published by --
-- the Free Software Foundation; either version 2 of the License, or (at --
-- your option) any later version. --
-- --
-- This program 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. See the GNU --
-- General Public License for more details. --
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-- You should have received a copy of the GNU General Public License --
-- along with this library; if not, write to the Free Software Foundation, --
-- Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. --
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-- You are not allowed to use any part of this code to develop a program --
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------------------------------------------------------------------------------
-- $Id: agpl-http-server-sort_handler-simple_list.adb,v 1.2 2004/03/03 00:06:06 Jano Exp $
with Agpl.Http.Server.Sort_handler;
with Agpl.Http.Server.Sort_handler.Aux;
with Ada.Unchecked_deallocation;
use Ada;
with System.Address_to_access_conversions;
package body Agpl.Http.Server.Sort_handler.Simple_list is
type Object_access is access all Object;
package Conv is new System.Address_to_access_conversions (Object);
use Aux.Address_lists;
Msgs : Aux.Address_lists.Container_type;
Pending : Natural := 0;
pragma Atomic (Pending);
protected Safe is
procedure Add (This : in Object);
procedure Clear;
procedure Http_report (Data : out Agpl.Http.Server.Sort_handler.Data_set);
end Safe;
protected body Safe is
------------------------------------------------------------------------
-- Add --
------------------------------------------------------------------------
procedure Add (This : in Object) is
Auxp : Object_access;
procedure Free is new Unchecked_deallocation (Object, Object_access);
begin
while Length (Msgs) >= Max_entries loop
Auxp := Object_access (Conv.To_pointer (Element (Last (Msgs))));
Free (Auxp);
Delete_last (Msgs);
end loop;
Auxp := new Object'(This);
Prepend (Msgs, Conv.To_address (Conv.Object_pointer (Auxp)));
Pending := Pending + 1;
end Add;
------------------------------------------------------------------------
-- Clear --
------------------------------------------------------------------------
procedure Clear is
begin
Clear (Msgs);
end Clear;
------------------------------------------------------------------------
-- Http_report --
------------------------------------------------------------------------
procedure Http_report (Data : out Agpl.Http.Server.Sort_handler.Data_set)
is
use Agpl.Http.Server.Sort_handler;
I : Iterator_type := First (Msgs);
Pos : Positive := 1;
begin
while I /= Back (Msgs) loop
declare
Row : Data_row;
Q : System.Address renames Element (I);
begin
Generate_row (
Object_access (Conv.To_pointer (Q)).all,
Pos <= Pending,
Row);
Append (Data, Row);
I := Succ (I);
end;
Pos := Pos + 1;
end loop;
Pending := 0;
end Http_report;
end Safe;
------------------------------------------------------------------------
-- New_events --
------------------------------------------------------------------------
-- Says how many new events are there since last check.
function New_events return Natural is
begin
return Pending;
end New_events;
------------------------------------------------------------------------
-- Add --
------------------------------------------------------------------------
procedure Add (This : in Object) is
begin
Safe.Add (This);
end Add;
------------------------------------------------------------------------
-- Clear --
------------------------------------------------------------------------
procedure Clear is
begin
Safe.Clear;
end Clear;
------------------------------------------------------------------------
-- Http_report --
------------------------------------------------------------------------
procedure Http_report (Data : out Agpl.Http.Server.Sort_handler.Data_set)
is
begin
Safe.Http_report (Data);
end Http_report;
end Agpl.Http.Server.Sort_handler.Simple_list;