kqueue is the "low level" interface, but requires that you handle all
file system events as they happen, and fast. There is a higher level
interface called fsevents (with accompanying daemon fseventsd) which
allows you a more calm way to read the file system events.
http://developer.apple.com/mac/library/documentation/Darwin/Conceptual/FSEvents_ProgGuide/Introduction/Introduction.html
I think launchd just happens to have an integration to kqueue or
fseventsd, I'm not sure launching a program every time a file changes
would be the best thing :-)
-Ross
On Dec 4, 2009, at 11:08 AM, David Leimbach wrote:
d
On Thu, Dec 3, 2009 at 7:55 PM, Gregory Collins <g...@gregorycollins.net
> wrote:
Conal Elliott <co...@conal.net> writes:
> I'd like to make some FRPish toys that keep files updated to have
> functional relationships with other files. hinotify looks like just
> the sort of underlying magic I could use for efficient
implementation
> on linux. Is there any support for mac os x? Could support be
either
> added to hinotify or maybe inotify and a mac-friendly library be
> abstracted into a common Haskell interface? I'm fine with an
> imperative interface, since I can abstract into a functional
library,
> which I guess would be a sort of persistent simplified FRP.
On Mac & BSD you have to use kqueue, and on Windows it's
ReadDirectoryChangesW. A platform-agnostic Haskell library for
detecting
filesystem change notifications is something that I would really
appreciate!
launchd does everything on mac os x, like literally everything. My
mother said if I can't say something good about someone or something
then don't say anything at all, and in this case, I'm taking her
advice on what I think about launchd, however if you click the link
below you might get an idea of how that works on Mac OS X.
http://stackoverflow.com/questions/1515730/is-there-a-command-like-watch-or-inotifywait-on-the-mac
Dave
G
--
Gregory Collins <g...@gregorycollins.net>
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