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122 | -- --
-- procedure Copyright (c) Dmitry A. Kazakov --
-- Test_Blackboard_Performance Luebeck --
-- Test blackboard operations performance Autumn, 2009 --
-- --
-- Last revision : 23:22 29 Sep 2017 --
-- --
-- This library 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 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. See the GNU --
-- General Public License for more details. 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. --
-- --
-- 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. --
--____________________________________________________________________--
with Ada.Exceptions; use Ada.Exceptions;
with Ada.Real_Time; use Ada.Real_Time;
with Ada.Text_IO; use Ada.Text_IO;
with System.Storage_Elements; use System.Storage_Elements;
with Test_Record_Blackboards; use Test_Record_Blackboards;
procedure Test_Blackboard_Performance is
Rounds : constant := 5_000_000;
use Boards;
procedure Report
( Text : String;
Span : Time_Span;
Rounds : Integer
) is
type Nanoseconds is delta 0.1 range -100.0..1_000_000.0;
begin
Put_Line
( Text
& Nanoseconds'Image
( Nanoseconds
( Float (To_Duration (Span)) * 1.0E9
/ Float (Rounds)
) )
& " ns"
);
end Report;
type Blackboard_Ptr is access Blackboard;
T1, T2, T3 : Time;
begin
delay 0.001; -- GNAT bug workaround
declare
Data_Ptr : constant Blackboard_Ptr := -- Don't allocate it on the
new Blackboard -- stack
( (2 * Rounds + 1)
* ( ( Element'Size
+ Storage_Element'Size
- 1
)
/ Storage_Element'Size
) );
Data : Blackboard renames Data_Ptr.all;
Item : Element;
This : Reference;
begin
T1 := Clock;
for I in 1..Rounds loop
Put (Data, (others => 0));
end loop;
T2 := Clock;
for I in 1..Rounds loop
Put (Data, (others => 0));
Put (Data, (others => 0));
end loop;
T3 := Clock;
Report ("writing blackboard", T3 - T2 - (T2 - T1), Rounds);
T1 := Clock;
This := First (Data);
T1 := Clock;
for I in 1..Rounds loop
Item := Get (Data, This);
end loop;
This := First (Data);
T2 := Clock;
for I in 1..Rounds loop
Item := Get (Data, This);
Item := Get (Data, This);
end loop;
T3 := Clock;
Report ("reading blackboard", T3 - T2 - (T2 - T1), Rounds);
T1 := Clock;
T1 := Clock;
for I in 1..Rounds * 10 loop
Item (1) := Item (I mod 10 + 1);
Item := (others => 0);
end loop;
T2 := Clock;
for I in 1..Rounds * 10 loop
Item := (others => 0);
Item (1) := Item (I mod 10 + 1);
Item := (others => 1);
end loop;
T3 := Clock;
Report ("raw writing", T3 - T2 - (T2 - T1), Rounds * 10);
T1 := Clock;
end;
exception
when Error : others =>
Put_Line ("Error: " & Exception_Information (Error));
end Test_Blackboard_Performance;
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