netty5/common/src
Norman Maurer 9c0d1a99bc Ensure attributes and contained object can be collected as fast as possible.
Motivation:

Due an implementation flaw in DefaultAttributeMap it was possible that an attribute and its stored value/key could not be collected until the DefaultAttributeMap could be collected. This can lead to unexpected memory usage and strong reachability of objects that should be collected.

Modifications:

Use an special empty DefaultAttribute as head of the each bucket which will not store any key / value. With this change everything can be collected as expected as we not use any DefaultAttribute created by the user as head of a bucket.

Result:

DefaultAttributeMap does not store user data and thus the lifetime of this user data is not tied to the lifetime of the DefaultAttributeMap.
2016-07-24 20:31:39 +02:00
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main Ensure attributes and contained object can be collected as fast as possible. 2016-07-24 20:31:39 +02:00
test Acquire Java version simply 2016-07-19 18:51:25 +02:00