Sped up query commands that read the git-annex branch by around 5%

The only price paid is one additional MVar read per write to the journal.
Presumably writing a journal file dominiates over a MVar read time by
several orders of magnitude.

--batch does not get the speedup because then it needs to notice when
another process has made a change. Also made the assistant and other damon
modes bypass the optimisation, which would not help them anyway.
This commit is contained in:
Joey Hess 2020-04-09 13:54:43 -04:00
parent aba905152a
commit aeca7c2207
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14 changed files with 101 additions and 25 deletions

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@ -30,7 +30,7 @@ seek bs = do
mergeAnnexBranch :: CommandStart
mergeAnnexBranch = starting "merge" (ActionItemOther (Just "git-annex")) $ do
Annex.Branch.update
_ <- Annex.Branch.update
-- commit explicitly, in case no remote branches were merged
Annex.Branch.commit =<< Annex.Branch.commitMessage
next $ return True