<p>Am 02.06.2014 10:38 schrieb "Michael Schnell" <<a href="mailto:mschnell@lumino.de">mschnell@lumino.de</a>>:<br>
> In Windows I suppose syscalls usually are not done directly by the rtl, but functions calls to a Kernel dll are done, so that that Windows.provide dll might decide to stay in usermode if possible.</p>
<p>On Windows the QueryPerfomanceCounter/Frequency calls always do a syscall, because the corresponding code is implemented in the HAL which is only accessible from kernel mode.</p>
<p>Regards,<br>
Sven</p>