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unit frm_main;
{$mode objfpc}{$H+}
// You need to enable these in tiOPF's tiDefines.inc as well.
{.$Define object_tracking}
{$Define reference_counting}
interface
uses
SysUtils, Classes, fpg_base, fpg_main, fpg_edit,
fpg_widget, fpg_form, fpg_label, fpg_button,
fpg_listbox, fpg_memo, fpg_combobox, fpg_grid,
fpg_dialogs, fpg_checkbox, fpg_tree, fpg_trackbar,
fpg_progressbar, fpg_radiobutton, fpg_tab, fpg_menu,
fpg_panel, fpg_popupcalendar, fpg_gauge;
type
TMainForm = class(TfpgForm)
private
procedure PerformanceTestNoReferenceCounting(Sender: TObject);
procedure PerformanceTestReferenceCounting(Sender: TObject);
procedure btnTestValidClick(Sender: TObject);
procedure Log(const AMessage: string);
public
{@VFD_HEAD_BEGIN: MainForm}
btnNoRefCount: TfpgButton;
btnRefCount: TfpgButton;
btnTestValid: TfpgButton;
memName1: TfpgMemo;
lblName1: TfpgLabel;
lblName2: TfpgLabel;
memLog: TfpgMemo;
{@VFD_HEAD_END: MainForm}
constructor Create(AOwner: TComponent); override;
procedure AfterCreate; override;
end;
{@VFD_NEWFORM_DECL}
implementation
uses
tiUtils,
tiBaseObject;
const
CTestRunTime = 5; // Seconds
CTestCount = 1000000; // 1 million
{@VFD_NEWFORM_IMPL}
procedure TMainForm.PerformanceTestNoReferenceCounting(Sender: TObject);
var
LO: TtiBaseObject;
LStart: Cardinal;
LCount: Cardinal;
begin
LCount := 0;
LStart := tiGetTickCount;
while LCount < CTestCount do
begin
LO := TtiBaseObject.Create;
LO.Free;
Inc(LCount);
end;
Log(Format('%s iterations in %d ms (no reference counting)',
[tiIntToCommaStr(LCount), tiGetTickCount - LStart]));
end;
procedure TMainForm.PerformanceTestReferenceCounting(Sender: TObject);
{$ifdef reference_counting}
var
// LO: IInterface;
LO: TtiBaseObject; // We are testing object creation only. Hence a class and not interface reference.
LStart: Cardinal;
LCount: Cardinal;
begin
LCount := 0;
LStart := tiGetTickCount;
while LCount < CTestCount do
begin
LO := TtiBaseObject.CreateWithRefCounting;
LO.Free; // we are testing object creation. This remove the garbage collector.
Inc(LCount);
end;
Log(Format('%s iterations in %d ms (reference counting)',
[tiIntToCommaStr(LCount), tiGetTickCount - LStart]));
{$else}
begin
Assert(False, 'reference_counting not enabled');
{$endif}
end;
procedure TMainForm.btnTestValidClick(Sender: TObject);
var
LO: TtiBaseObject;
begin
LO := TtiBaseObject.Create;
Assert(LO.TestValid);
LO.Free;
Assert(not LO.TestValid);
end;
procedure TMainForm.Log(const AMessage: string);
begin
memLog.Lines.Add(AMessage);
memLog.Invalidate;
end;
constructor TMainForm.Create(AOwner: TComponent);
begin
inherited Create(AOwner);
memLog.Lines.Clear;
{$ifdef object_tracking}
Log('object_tracking is ON');
{$else}
btnTestValid.Enabled := False;
Log('object_tracking is OFF');
{$endif}
{$ifdef reference_counting}
Log('reference_counting is ON');
{$else}
Log('reference_counting is OFF');
btnRefCount.Enabled := False;
{$endif}
Log('---');
end;
procedure TMainForm.AfterCreate;
begin
{@VFD_BODY_BEGIN: MainForm}
Name := 'MainForm';
SetPosition(307, 319, 357, 290);
WindowTitle := 'TtiBaseObject Performance Demo';
WindowPosition := wpScreenCenter;
btnNoRefCount := TfpgButton.Create(self);
with btnNoRefCount do
begin
Name := 'btnNoRefCount';
SetPosition(16, 28, 155, 23);
Text := 'No reference counting';
FontDesc := '#Label1';
ImageName := '';
OnClick := @PerformanceTestNoReferenceCounting;
end;
btnRefCount := TfpgButton.Create(self);
with btnRefCount do
begin
Name := 'btnRefCount';
SetPosition(16, 56, 155, 23);
Text := 'Reference counting';
FontDesc := '#Label1';
ImageName := '';
OnClick := @PerformanceTestReferenceCounting;
end;
btnTestValid := TfpgButton.Create(self);
with btnTestValid do
begin
Name := 'btnTestValid';
SetPosition(16, 112, 155, 23);
Text := 'TtiBaseObject.TestValid';
FontDesc := '#Label1';
ImageName := '';
OnClick := @btnTestValidClick;
end;
memName1 := TfpgMemo.Create(self);
with memName1 do
begin
Name := 'memName1';
SetPosition(176, 28, 176, 125);
Lines.Add('Toggle the conditional defines');
Lines.Add('REFERENCE_COUNTING ');
Lines.Add('and OBJECT_TRACKING on ');
Lines.Add('and off to examine behaviour.');
FontDesc := '#Edit1';
Enabled := False;
end;
lblName1 := TfpgLabel.Create(self);
with lblName1 do
begin
Name := 'lblName1';
SetPosition(8, 8, 160, 15);
Text := 'Performance';
FontDesc := '#Label2';
end;
lblName2 := TfpgLabel.Create(self);
with lblName2 do
begin
Name := 'lblName2';
SetPosition(8, 92, 160, 15);
Text := 'TtiBaseObject.TestValid';
FontDesc := '#Label2';
end;
memLog := TfpgMemo.Create(self);
with memLog do
begin
Name := 'memLog';
SetPosition(8, 164, 344, 121);
Lines.Add('');
FontDesc := '#Edit1';
end;
{@VFD_BODY_END: MainForm}
end;
end.
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