2d7e46ea98
Fix hang when dropping content needs to lock the content on a ssh remote, which occurred when the remote has git-annex version 5.20151019 or newer. Analysis: `race` runs 2 threads at once, and the hGetLine finishes first. So, it tries to cancel the waitForProcess, but unfortunately that is making a foreign call and so cannot be canceled. The remote git-annex-shell is waiting for a line on stdin before it will exit. Deadlock. This only occurred sometimes; I reproduced it going from darkstar to elephant, but not from darkstar to darkstar. Not sure how that fits into the above analysis -- perhaps a race condition is also involved? Fixed by not using `race`; now the hGetLine will fail with an exception if the remote git-annex-shell exits without any output. |
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| .. | ||
| patches | ||
| tests | ||
| cabal-wrapper | ||
| changelog | ||
| compat | ||
| control | ||
| copyright | ||
| create-standalone-changelog | ||
| doc-base | ||
| git-annex.lintian-overrides | ||
| NEWS | ||
| rules | ||