[fpc-pascal] EpikTimer v1.0.1 released
Michael Schnell
mschnell at lumino.de
Mon Jun 2 10:38:14 CEST 2014
On 05/28/2014 05:41 PM, Marco van de Voort wrote:
> . But that means you need to use OS timing functions, and not ASM.
Meaning either syscalls or vDSO.
As in Linux syscalls do a usermode->Kernelmode->usermode switch, they
introduce a huger overhead.
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.
-Michael
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