Ethan Atkins 05407cea55 Close file tree repository registrations ... Upon successful registration with a FileTreeRepository, an Observable is returned by the FileTreeRepository that can be used to observer the specific globs that were registered. The FileTreeRepository also has a global Observable that can be used to monitor _all_ events. In order to implement this feature, internally the FileTreeRepository needs to hold a reference to the registered Observable so that it forwards relevant file change events. If we do not close the Observable, it leaks memory inside of FileTreeRepository. There were a number of places within sbt where we registered globs and did nothing with the returned Observable. It was thus straightforward to fix the leak by just closing the returned Observables. This came up because I was looking at a heap dump of https://github.com/jtjeferreira/sbt-multi-module-sample after running 1000 no-op compiles and noticed that the FileTreeRepository.observables were taking up 75MB out of a total heap of about 300MB. As a side note, it would be nice if sbt had a warning for unused return values when a statement is not the last in a block. It's possible that these leaks wouldn't have happened if we were forced to handle the returned Observables.		2020-08-07 10:50:22 -07:00
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src	Close file tree repository registrations	2020-08-07 10:50:22 -07:00
NOTICE	Add, configure & enforce file headers	2017-10-05 09:03:40 +01:00