Hi Frank On Wed, Jun 23, 2010 at 4:58 PM, Frank Warmerdam <warmer...@pobox.com> wrote: > Martin, > > Generally speaking it is not safe to have multiple threads making calls > into a single OGRLayer at the same time. At the very least you will > encounter the "messing up" effect on GetNextFeature(), even if you > serialize calls, and if you don't serialize the calls to the OGRLayer > you will also face potentially severe problems and crashes. > > With regard to RFC 16, only a little work in the existing code with > locks was implemented. None of the TestCapability or GetLayerClone() > work was done. I still think that the approach in the RFC is reasonable > but I don't currently have funding to pursue the matter. There was > also some pushback at the time though I don't recall all the details.
My intent is to use two OGRLayer instances of the same layer: one instance for handling various stuff in main thread, the other one in worker thread for rendering. Can I expect the GetNextFeature calls to be reentrant, i.e. can they be called from both threads simultaneously using different instances of layers? Regards Martin _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
