Module-Restart and Library-Reload

I have two questions in conjunction with my handler-module: A) The module does use other shared libraries (on linux, *.so) for plugins / functionality. Is it possible to reload such a shared library (after software changes and placing a new version) without restart of apache? B) The module

How to distinguish between restart and reload in a module?

Hello, I would be glad, if somebody can tell me, how I can distinguish between restart and reload in a module inside hooks ap_hook_post_config, ap_hook_pre_config and create server config. Thank you in advance Manfred