implement inotify directory watcher

[MartinNowak]

No description provided.

[s-ludwig]

Thanks a lot! So the "let's pretend D is a scripting language" game can finally start ;) Looks like the wrong IN_NONBLOCK value may have caused some grief?

BTW, for Mac OS it looks like Obj-C is necessary (pathDidChange selector), so that's something I'd add when Michel's/Jacob's D-ObjC support is integrated into DMD.

[MartinNowak]

I think it can be done with kqueue on OSX/FreeBSD.

[w0rp]

kqueue on FreeBSD and Mac is the way to go from what I've read. I'm basing that largely on what Nginx does. Nginx uses epoll by default for monitoring on Linux and kqueue by default for monitoring on FreeBSD and Mac OSX, etc.

[s-ludwig]

Yes, looks like kqueue can do that, too, and it definitely is the target for server/command line applications. My misconception came from an earlier need to have something that integrates well with a Cocoa application. This will still be important in the future, but that's a different topic.

[Kapps]

If recursion is desired, I believe FSEvents is what would be used:
https://developer.apple.com/library/mac/documentation/Darwin/Reference/FSEvents_Ref/Reference/reference.html

Being notified which file changed is only supported in OSX 10.7 or higher, but that's probably a reasonable requirement.

[ibuclaw]

I seem to be getting a SEGV here on my 32bit server, but not on my 64bit dev machine.

[MartinNowak]

Mmh, the inotify_event struct looks declaration seems to be correct. Can you print out nread?

[ibuclaw]

Hmm... seem to have been a bug when built with the gdc-2.064 binaries. I've switched to gdc-2.065 and it's gone away. This might be difficult to track down.

[MartinNowak]

Yeah, it also works for me with -m32 on dmd.2.065.