unit mwFastTime;
interface
uses
SysUtils, Windows, Classes;
type
TmwFastTime = class(TComponent)
private
c, n1, n2: TLargeInteger;
function GetElapsedTime: ShortString;
function GetElapsed: Extended;
protected
public
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
Property Elapsed: Extended read GetElapsed;
Property ElapsedTime: ShortString read GetElapsedTime;
Procedure Start;
Procedure Stop;
published
Property Name;
Property Tag;
end;
procedure Register;
implementation
{~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~}
procedure Register;
begin
RegisterComponents('mw', [TmwFastTime]);
end;
{~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~}
constructor TmwFastTime.Create(AOwner: TComponent);
begin
inherited Create(AOwner);
QueryPerformanceFrequency(c);
end;
{~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~}
destructor TmwFastTime.Destroy;
begin
inherited Destroy;
end;
{~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~}
function TmwFastTime.GetElapsed: Extended;
begin
{$IFDEF VER120}
Result:= (_LARGE_INTEGER(n2).QuadPart - _LARGE_INTEGER(n1).QuadPart) / _LARGE_INTEGER(c).QuadPart;
{$ELSE}
Result:= (n2.QuadPart - n1.QuadPart) / c.QuadPart;
{$ENDIF}
end;
{~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~}
function TmwFastTime.GetElapsedTime: ShortString;
begin
{$IFDEF VER120}
Result := format('Seconds: %g', [GetElapsed]);
{$ELSE}
Result := format('Seconds: %g', [GetElapsed]);
{$ENDIF}
end;
{~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~}
Procedure TmwFastTime.Start;
begin
QueryPerformanceCounter(n1);
end;
{~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~}
Procedure TmwFastTime.Stop;
begin
QueryPerformanceCounter(n2);
end;
end.
