I have tests running on Windows in this draft PR. They fail on a memory access violation when executing tests/test_memoryfile.py::test_memfile_thread_safe_option.

Originally posted by @a-gn in #3030

According to: https://gdal.org/en/stable/development/rfc/rfc101_raster_dataset_threadsafety.html

A special implementation is also made for dataset instances of the MEM driver.