Hi regarding the System.gc() hack it's close to impossible to say how much gets freed. According to http://bugs.java.com/view_bug.do?bug_id=6668279 only unsed object references are discovered and _may_ get released. AFAIK streams or file handles aren't closed by GC directly, but sometimes when the finalyze() is implemented this may work. E.g. consider the Inflater *1) has a end() method which frees up the off-heap memory resources (because inflater uses zlib via JNI). As long as such Inflater objects aren't garbage collected they can occupy huge amount of memory. To avoid such, its recommended to use try-finally constructs or try-resources (Java7) to explicitly release the resources. Knowing this makes me even more wonder, why the comments in ShadeMojo:643 state that there are unclosed streams are freed.
*1) https://docs.oracle.com/javase/7/docs/api/java/util/zip/Inflater.html Regards Martin @nitram509 Am 21.11.2015 um 11:13 schrieb Hervé BOUTEMY: > [...] > Do you have an idea of how much recoverable such leaks are with the > System.gc() hack? > [...] --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@maven.apache.org For additional commands, e-mail: dev-h...@maven.apache.org
