取得自从开机到现在CPU运行的周期数，超毫秒级的精度
function Ticker : DWord; register;
begin
  asm
          push EAX
          push EDX
          db $0f,$31
          mov Result, EAX
          pop EDX
          pop EAX
  end;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
 showmessage(inttostr( Ticker));
end;

//rock
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