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* Fix minor FD leak in journal code. Closes: #754608 * direct: Fix handling of case where a work tree subdirectory cannot be written to due to permissions. * migrate: Avoid re-checksumming when migrating from hashE to hash backend. * uninit: Avoid failing final removal in some direct mode repositories due to file modes. * S3: Deal with AWS ACL configurations that do not allow creating or checking the location of a bucket, but only reading and writing content to it. * resolvemerge: New plumbing command that runs the automatic merge conflict resolver. * Deal with change in git 2.0 that made indirect mode merge conflict resolution leave behind old files. * sync: Fix git sync with local git remotes even when they don't have an annex.uuid set. (The assistant already did so.) * Set gcrypt-publish-participants when setting up a gcrypt repository, to avoid unncessary passphrase prompts. This is a security/usability tradeoff. To avoid exposing the gpg key ids who can decrypt the repository, users can unset gcrypt-publish-participants. * Install nautilus hooks even when ~/.local/share/nautilus/ does not yet exist, since it is not automatically created for Gnome 3 users. * Windows: Move .vbs files out of git\bin, to avoid that being in the PATH, which caused some weird breakage. (Thanks, divB) * Windows: Fix locking issue that prevented the webapp starting (since 5.20140707). # imported from the archive
35 lines
924 B
Haskell
35 lines
924 B
Haskell
{- parallel processing via threads
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-
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- Copyright 2012 Joey Hess <joey@kitenet.net>
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-
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- License: BSD-2-clause
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-}
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module Utility.Parallel where
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import Common
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import Control.Concurrent
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import Control.Exception
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{- Runs an action in parallel with a set of values, in a set of threads.
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- In order for the actions to truely run in parallel, requires GHC's
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- threaded runtime,
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-
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- Returns the values partitioned into ones with which the action succeeded,
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- and ones with which it failed. -}
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inParallel :: (v -> IO Bool) -> [v] -> IO ([v], [v])
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inParallel a l = do
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mvars <- mapM thread l
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statuses <- mapM takeMVar mvars
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return $ reduce $ partition snd $ zip l statuses
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where
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reduce (x,y) = (map fst x, map fst y)
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thread v = do
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mvar <- newEmptyMVar
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_ <- forkIO $ do
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r <- try (a v) :: IO (Either SomeException Bool)
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case r of
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Left _ -> putMVar mvar False
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Right b -> putMVar mvar b
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return mvar
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