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This is a binding for GHC 7 to the Linux Kernel's inotify interface,
which provides notifications to applications regarding file system
events, such as file creation, modification, deletion, etc.
Some of the advantages over hinotify are:
linux-inotify provides a plain getEvent operator that blocks,
instead of implementing a callback API.
linux-inotify avoids most of GHC's standard IO handling code,
relying on plain system calls with minimal overhead in Haskell-land.
(However, it still does make good use of GHC's IO manager via
nonblocking inotify sockets and threadWaitRead, so getEvent is
still efficient.)
linux-inotify does not call forkIO, which means less context
switching and scheduling overhead, especially in contexts where
hinotify's particular event router isn't a very good fit for
your application; e.g. you are implementing a following log file
processor.
Some of the disadvantages compared to hinotify are:
Due to the use of inotify_init1, `linux-inotify` currently
requires linux 2.6.27 or later, even though inotify support
debuted in linux 2.6.13. You can check which version of linux is
on a machine via uname `-a`. I would like to fix this at some point,
but it isn't a personal priority.
`linux-inotify` requires GHC 7.8.1 or later, whereas hinotify
works with many versions of GHC 6. I have no plans to fix this.
