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Emmanuel Lecharny commented on DIRMINA-1103: -------------------------------------------- Question: there is a {{cleanup}} method in {{zlib}} : {code:java} /** * Cleans up the resources used by the compression library. */ public void cleanUp() { if (zStream != null) { zStream.free(); } } {code} Wouldn't it do the job ? > Avoid sticky byte array buffers in Zlib CompressionFilter > --------------------------------------------------------- > > Key: DIRMINA-1103 > URL: https://issues.apache.org/jira/browse/DIRMINA-1103 > Project: MINA > Issue Type: Improvement > Affects Versions: 2.0.21 > Reporter: Jörg Michelberger > Priority: Major > > For each Zlib instance there is a zStream instance which is equipped with new > buffers for each in and out of inflate / deflate. This buffers are not > released after each inflate / deflate. So the last compressed and > uncompressed byte[] and its content for rx and tx is not garbage collectable > on each session. > It would be great if there was a reset(zStream) method on Zlib which sets the > in and out to static empty byte[] to release these buffers after usage quite > before returning from Zlib.deflate and Zlib.inflate but in the synchronized > block. Something like: > {{private void resetZStream (zStream) {}} > {{ zStream.next_in = EMPTY_BYTE_ARRAY;}} > {{ zStream.next_in_index = 0;}} > {{ zStream.avail_in = 0;}} > {{ zStream.next_out = EMPTY_BYTE_ARRAY;}} > {{ zStream.next_out_index = 0;}} > {{ zStream.avail_out = 0;}} > {{}}} > -- This message was sent by Atlassian JIRA (v7.6.3#76005)