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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