Use ReadDirectoryChangesW instead of ChangeNotify on Win32 (Windows 10 onwards)

[Corion]

Thank you for writing Filesys::Notify::Simple!

I recently wrote Filesys::Notify::Win32::ReadDirectoryChanges for a different tool, but I think it would improve the resource usage of Filesys::Notify::Simple. It uses the ReadDirectoryChangesW API , which allows waiting for arbitrarily many directories instead of a limit of 64 objects.

My approach has different prerequisites than the approach using Win32::ChangeNotify:

• threads
• Win32::API
• Encode
• Windows 10 onwards

If you are interested, I will release Filesys::Notify::Win32::ReadDirectoryChanges and create a pull request that adds it as one step before loading Win32::ChangeNotify. If you think there should be API changes made to my module, please also tell me, ideally before I release it onto CPAN :)

[miyagawa]

sounds reasonable to me! PR welcome.

[Corion]

Thanks for merging this!

I made a mistake in adding Cygwin support. F:N:W:ReadDirectoryChanges doesn't work on Cygwin (yet) and won't install there. I will either find a fix for that or amend the PR so that the (wrong, if harmless) Cygwin lines are removed.

[miyagawa]

@Corion can you update the POD documentation to mention your module as well? There's a whole section about win32 compatibility that needs updating.

[Corion]

Yes, I will update that part as well!