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This commit is contained in:
Joey Hess 2012-07-26 21:51:47 -04:00
parent f5ef46d01e
commit 77c3bf7f88
1 changed files with 14 additions and 11 deletions
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Assistant.hs
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@ -10,7 +10,7 @@
- The initial thread run, double forks to background, starts other
- threads, and then stops, waiting for them to terminate,
- or for a ctrl-c.
- Thread 2: watcher
- Thread 2: Watcher
- Notices new files, and calls handlers for events, queuing changes.
- Thread 3: inotify internal
- Used by haskell inotify library to ensure inotify event buffer is
@ -19,43 +19,46 @@
- Scans the tree and registers inotify watches for each directory.
- A MVar lock is used to prevent other inotify handlers from running
- until this is complete.
- Thread 5: committer
- Thread 5: Committer
- Waits for changes to occur, and runs the git queue to update its
- index, then commits. Also queues Transfer events to send added
- files to other remotes.
- Thread 6: pusher
- Thread 6: Pusher
- Waits for commits to be made, and pushes updated branches to remotes,
- in parallel. (Forks a process for each git push.)
- Thread 7: push retryer
- Thread 7: PushRetryer
- Runs every 30 minutes when there are failed pushes, and retries
- them.
- Thread 8: merger
- Thread 8: Merger
- Waits for pushes to be received from remotes, and merges the
- updated branches into the current branch.
- (This uses inotify on .git/refs/heads, so there are additional
- inotify threads associated with it, too.)
- Thread 9: transfer watcher
- Thread 9: TransferWatcher
- Watches for transfer information files being created and removed,
- and maintains the DaemonStatus currentTransfers map.
- (This uses inotify on .git/annex/transfer/, so there are
- additional inotify threads associated with it, too.)
- Thread 10: transferrer
- Thread 10: Transferrer
- Waits for Transfers to be queued and does them.
- Thread 11: status logger
- Thread 11: StatusLogger
- Wakes up periodically and records the daemon's status to disk.
- Thread 12: sanity checker
- Thread 12: SanityChecker
- Wakes up periodically (rarely) and does sanity checks.
- Thread 13: mount watcher
- Thread 13: MountWatcher
- Either uses dbus to watch for drive mount events, or, when
- there's no dbus, polls to find newly mounted filesystems.
- Once a filesystem that contains a remote is mounted, updates
- state about that remote, pulls from it, and queues a push to it,
- as well as an update, and queues it onto the
- ConnectedRemoteChan
- Thread 14: transfer scanner
- Thread 14: TransferScanner
- Does potentially expensive checks to find data that needs to be
- transferred from or to remotes, and queues Transfers.
- Uses the ScanRemotes map.
- Thread 15: WebApp
- Spawns more threads as necessary to handle clients.
- Displays the DaemonStatus.
-
- ThreadState: (MVar)
- The Annex state is stored here, which allows resuscitating the