[fpc-devel] Xe3 Parallel for

Michael Schnell mschnell at lumino.de
Wed May 13 11:43:44 CEST 2015

On 05/13/2015 11:16 AM, Sven Barth wrote:
> You do know that there exist other synchronisation primitives beside 
> the event queue? And since the TParallel.For itself is a blocking call 
> I highly suspect that they *don't* use the event queue, but TEvent and 
> similar instead.
If using other synchronization primitives but  the event queue might 
interfere with e.g. the LCL's "Application.ProcessMessages" mechanism.

IMHO it already is not a nice implementation that the fpc event queue 
needs to be handled in parallel with the LCL event queue (which is 
buried within the Windows API when running in Windows, but coded 
explicitly in Pascal when running in Linux). Creating yet a third 
potentially parallel active synchronizing mechanism for multi-core 
support hidden in a library sounds not like a good idea to me.


More information about the fpc-devel mailing list