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* assistant: The ConfigMonitor left one zombie behind each time it checked for ↵Gravatar Joey Hess2013-03-18
| | | | changes, now fixed.
* Merge branch 'master' into desymlinkGravatar Joey Hess2012-12-13
|\ | | | | | | | | | | | | | | Conflicts: Annex/CatFile.hs Annex/Content.hs Git/LsFiles.hs Git/LsTree.hs
| * finished where indentation changesGravatar Joey Hess2012-12-13
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* | git diff-tree interfaceGravatar Joey Hess2012-12-10
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* add ConfigMonitor threadGravatar Joey Hess2012-10-20
| | | | | | | | | | | | | | | | | | | | Monitors git-annex branch for changes, which are noticed by the Merger thread whenever the branch ref is changed (either due to an incoming push, or a local change), and refreshes cached config values for modified config files. Rate limited to run no more often than once per minute. This is important because frequent git-annex branch changes happen when files are being added, or transferred, etc. A primary use case is that, when preferred content changes are made, and get pushed to remotes, the remotes start honoring those settings. Other use cases include propigating repository description and trust changes to remotes, and learning when a remote has added a new special remote, so the webapp can present the GUI to enable that special remote locally. Also added a uuid.log cache. All other config files already had caches.
* more zombie fightingGravatar Joey Hess2012-10-04
| | | | | | | | | | | | | | | | | | | | I'm down to 9 places in the code that can produce unwaited for zombies. Most of these are pretty innocuous, at least for now, are only used in short-running commands, or commands that run a set of actions and explicitly reap zombies after each one. The one from Annex.Branch.files could be trouble later, since both Command.Fsck and Command.Unused can trigger it, and the assistant will be doing those eventally. Ditto the one in Git.LsTree.lsTree, which Command.Unused uses. The only ones currently affecting the assistant though, are in Git.LsFiles. Several threads use several of those. (And yeah, using pipes or ResourceT would be a less ad-hoc approach, but I don't really feel like ripping my entire code base apart right now to change a foundation monad. Maybe one of these days..)
* support all filename encodings with ghc 7.4Gravatar Joey Hess2012-02-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Under ghc 7.4, this seems to be able to handle all filename encodings again. Including filename encodings that do not match the LANG setting. I think this will not work with earlier versions of ghc, it uses some ghc internals. Turns out that ghc 7.4 has a special filesystem encoding that it uses when reading/writing filenames (as FilePaths). This encoding is documented to allow "arbitrary undecodable bytes to be round-tripped through it". So, to get FilePaths from eg, git ls-files, set the Handle that is reading from git to use this encoding. Then things basically just work. However, I have not found a way to make Text read using this encoding. Text really does assume unicode. So I had to switch back to using String when reading/writing data to git. Which is a pity, because it's some percent slower, but at least it works. Note that stdout and stderr also have to be set to this encoding, or printing out filenames that contain undecodable bytes causes a crash. IMHO this is a misfeature in ghc, that the user can pass you a filename, which you can readFile, etc, but that default, putStr of filename may cause a crash! Git.CheckAttr gave me special trouble, because the filenames I got back from git, after feeding them in, had further encoding breakage. Rather than try to deal with that, I just zip up the input filenames with the attributes. Which must be returned in the same order queried for this to work. Also of note is an apparent GHC bug I worked around in Git.CheckAttr. It used to forkProcess and feed git from the child process. Unfortunatly, after this forkProcess, accessing the `files` variable from the parent returns []. Not the value that was passed into the function. This screams of a bad bug, that's clobbering a variable, but for now I just avoid forkProcess there to work around it. That forkProcess was itself only added because of a ghc bug, #624389. I've confirmed that the test case for that bug doesn't reproduce it with ghc 7.4. So that's ok, except for the new ghc bug I have not isolated and reported. Why does this simple bit of code magnet the ghc bugs? :) Also, the symlink touching code is currently broken, when used on utf-8 filenames in a non-utf-8 locale, or probably on any filename containing undecodable bytes, and I temporarily commented it out.
* attempt at a quick, utf-8 only fix to the ghc 7.4 problemGravatar Joey Hess2012-02-01
| | | | | If you have only utf-8 filenames, and need to build git-annex with ghc 7.4, this will work. But, it will crash on non-utf-8 filenames.
* use Common in a few more modulesGravatar Joey Hess2011-12-20
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* split out Git/Command.hsGravatar Joey Hess2011-12-14
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* split out two more Git modulesGravatar Joey Hess2011-12-13
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* improve type signatures with a Ref newtypeGravatar Joey Hess2011-11-16
| | | | | | | | | | | In git, a Ref can be a Sha, or a Branch, or a Tag. I added type aliases for those. Note that this does not prevent mixing up of eg, refs and branches at the type level. Since git really doesn't care, except rare cases like git update-ref, or git tag -d, that seems ok for now. There's also a tree-ish, but let's just use Ref for it. A given Sha or Ref may or may not be a tree-ish, depending on the object type, so there seems no point in trying to represent it at the type level.
* reorder repo parameters lastGravatar Joey Hess2011-11-08
| | | | | | | | | | | | | Many functions took the repo as their first parameter. Changing it consistently to be the last parameter allows doing some useful things with currying, that reduce boilerplate. In particular, g <- gitRepo is almost never needed now, instead use inRepo to run an IO action in the repo, and fromRepo to get a value from the repo. This also provides more opportunities to use monadic and applicative combinators.
* convert all git read/write functions to use ByteStringsGravatar Joey Hess2011-09-29
| | | | | | | | | | This yields a second or so speedup in unused, find, etc. Seems that even when the ByteString is immediately split and then converted to Strings, it's faster. I may try to push ByteStrings out into more of git-annex gradually, although I suspect most of the time-critical parts are already covered now, and many of the rest rely on libraries that only support Strings.
* layoutGravatar Joey Hess2011-09-29
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* Sped up unused.Gravatar Joey Hess2011-09-29
| | | | | | | | | | | | | Added Git.ByteString which replaces Git IO methods with ones using lazy ByteStrings. This can be more efficient when large quantities of data are being read from git. In Git.LsTree, parse git ls-tree output more efficiently, thanks to ByteString. This benchmarks 25% faster, in a benchmark that includes (probably predominately) the run time for git ls-tree itself. In real world numbers, this makes git annex unused 2 seconds faster for each branch it needs to check, in my usual large repo.
* make unused check branches and tags tooGravatar Joey Hess2011-09-28
| | | | needs time and space optimisation
* use FileModeGravatar Joey Hess2011-09-28
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* add ls-tree interfaceGravatar Joey Hess2011-09-28
This parser should be fast. I hope.