Best dbus events I could find were setupDone from org.kde.Solid.Device.
There may be some spurious events, but that's ok, the code will only
check to see if new mounts are available.
It does not try to auto-start this service if it's not running.
There's a minor performance overhead to doing this, but this way I don't
have to worry about a situation where statfs might block for a long time.
For example, when it's on a network filesystem.
While this seems to work fine when used in a simple program,
when I load it in ghci, it segfaults about half the time. Don't know why,
and seems ghci specific, but if I get reports of crashes, I'll need to look
into that.
Converted from using c2hs to using hsc2hs, just because other code
in git-annex uses hsc2hs.
Various cleanups.
This code is LGPLed, so I had to include that licence.
Make Utility.Process wrap the parts of System.Process that I use,
and add debug logging to them.
Also wrote some higher-level code that allows running an action
with handles to a processes stdin or stdout (or both), and checking
its exit status, all in a single function call.
As a bonus, the debug logging now indicates whether the process
is being run to read from it, feed it data, chat with it (writing and
reading), or just call it for its side effect.
This should fix OSX/BSD issues with not noticing transfer information
files with kqueue. Now that threads are used, the thread can manage the
transfer slot allocation and deallocation by itself; much cleaner.
Test suite now passes with -threaded!
I traced back all the hangs with -threaded to System.Cmd.Utils. It seems
it's just crappy/unsafe/outdated, and should not be used. System.Process
seems to be the cool new thing, so converted all the code to use it
instead.
In the process, --debug stopped printing commands it runs. I may try to
bring that back later.
Note that even SafeSystem was switched to use System.Process. Since that
was a modified version of code from System.Cmd.Utils, it needed to be
converted too. I also got rid of nearly all calls to forkProcess,
and all calls to executeFile, which I'm also doubtful about working
well with -threaded.
