file-notify-descriptors

file-notify-descriptors is a variable defined in `filenotify.el'.
Its value is

#s(hash-table size 65 test equal rehash-size 1.5 rehash-threshold 0.8 data
	      ())

Documentation:
Hash table for registered file notification descriptors.
A key in this hash table is the descriptor as returned from
`gfilenotify', `inotify', `w32notify' or a file name handler.
The value in the hash table is the cons cell (DIR FILE CALLBACK).