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path: root/src/Utility/ConcurrentOutput.hs
AgeCommit message (Collapse)Author
2015-10-28fix memory leak, and optimise when command output is very largeJoey Hess
2015-10-28fix buffer orderJoey Hess
Build it up reversed, and reverse when processing.
2015-10-28work around waitForProcess race conditionJoey Hess
https://github.com/haskell/process/issues/46
2015-10-28fix tricky raceJoey Hess
Race between 2 calls to takeOutputLock'. The first call empties the TMVar, and does some work to check it. Meanwhile, the second call could sneak in, see it was empty, and call waitlock. Since waitlock used tryTakeTMVar, that would not block it, and it would think it had the lock, filling the TMVar. In the meantime, the first call could decide it had to lock and go on to possibly cause trouble.
2015-10-28fix bad MVar use, use STMJoey Hess
I had 2 MVars both involved in the same lock, and it seemed intractable to avoid deadlocks with them. STM makes it easy. At this point, the concurrent process stuff seems to work pretty well, but I'm not 100% sure it's not got some bugs.
2015-10-28need withConcurrentOutput to flush any buffered concurrent outputJoey Hess
2015-10-28propellor spinJoey Hess
2015-10-28propellor spinJoey Hess
2015-10-28use outputConcurrent interfaceJoey Hess
This interface will fix the current deadlock when a process is running and the thread that ran it wants to output to the console. The locking and buffering is not implemented yet.
2015-10-28propellor spinJoey Hess
2015-10-28propellor spinJoey Hess
2015-10-28improve commentJoey Hess
2015-10-28don't truncate over-large output; swap to temp filesJoey Hess
2015-10-28split out generic ConcurrentOutput module to UtilityJoey Hess