| Commit message (Collapse) | Author | Age |
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I hope this will be easier to reason about, and less buggy. It was
certianly easier to write!
An immediate benefit is that with a traversable queue of push requests to
select from, the threads can be a lot fairer about choosing which client to
service next.
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Fixed handling of case when file does not exist to work like it did before,
and avoid an excess stat call.
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This fixes a bug where a direct mode sync fails to delete broken symlinks.
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write to it.
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catching exceptions.
As seen in this bug report, the lifted exception handling using the StateT
monad throws away state changes when an action throws an exception.
http://git-annex.branchable.com/bugs/git_annex_fork_bombs_on_gpg_file/
.. Which can result in cached values being redundantly calculated, or other
possibly worse bugs when the annex state gets out of sync with reality.
This switches from a StateT AnnexState to a ReaderT (MVar AnnexState).
All changes to the state go via the MVar. So when an Annex action is
running inside an exception handler, and it makes some changes, they
immediately go into affect in the MVar. If it then throws an exception
(or even crashes its thread!), the state changes are still in effect.
The MonadCatchIO-transformers change is actually only incidental.
I could have kept on using lifted-base for the exception handling.
However, I'd have needed to write a new instance of MonadBaseControl
for the new monad.. and I didn't write the old instance.. I begged Bas
and he kindly sent it to me. Happily, MonadCatchIO-transformers is
able to derive a MonadCatchIO instance for my monad.
This is a deep level change. It passes the test suite! What could it break?
Well.. The most likely breakage would be to code that runs an Annex action
in an exception handler, and *wants* state changes to be thrown away.
Perhaps the state changes leaves the state inconsistent, or wrong. Since
there are relatively few places in git-annex that catch exceptions in the
Annex monad, and the AnnexState is generally just used to cache calculated
data, this is unlikely to be a problem.
Oh yeah, this change also makes Assistant.Types.ThreadedMonad a bit
redundant. It's now entirely possible to run concurrent Annex actions in
different threads, all sharing access to the same state! The ThreadedMonad
just adds some extra work on top of that, with its own MVar, and avoids
such actions possibly stepping on one-another's toes. I have not gotten
rid of it, but might try that later. Being able to run concurrent Annex
actions would simplify parts of the Assistant code.
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That's needed in files used to build the configure program.
For the other files, I'm keeping my __WINDOWS__ define, as I find that much easier to type.
I may search and replace it to use the mingw32_HOST_OS thing later.
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This is enough to let the configure program build.
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destination's default file permissions, as the local ones can be arbitrarily broken. (Ie, ----rwxr-x for files on Android)
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Run the same code git-annex used to get the sha, including its sanity
checking. Much better than old grep. Should detect FreeBSD systems with
sha commands that output in stange format.
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on server
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Bionic has an amusing stub for `getmntent` that prints out
"FIX ME! implement getmntent()"
But, `/proc/mounts` is there, so I just parse it.
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Presumably, if the filesystem doesn't support file permissions, it's not
much of a multiuser system.
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For an unknown reason, getAddrInfo currently is segfaulting. Note that
in February, I had used warpDebug, which uses getAddrInfo, and it worked.
Don't know if my toolchain has changed and broke it, or it's due to having
a different Android device now. Anyway, work around it by hardcoding the
address to use.
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This caused the code to fail on Android, which doesn't know that flag.
It seems best to let the OS default flags be used. Tested working ok on
Linux. The only difference on Linux is it might return a v4mapped ipv6
address sometimes.
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Some nice efficiency gains here for list appending, although mostly
the small size of the transfer queue makes them irrelivant.
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limit behavior
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This better handles error messages formatted for console display, by
adding a <br> after each line.
Hmm, I wonder if it'd be worth pulling in a markdown formatter, and running
the messages through it?
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I have a report that this is necessary for freebsd.
It seemed not necessary for OSX, but even there the kqueue
man page says to include this header (along with sys/time.h
which it already does).
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I think I've been looking for that function for some time.
Ie, I remember wanting to collapse Just Nothing to Nothing.
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I've found multiple references to using the `am` command from the adb shell
to open a browser. So I assume it also works in a terminal emulator.
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Joey Hess
Joey Hess