Keith Wall created QPID-6770:
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Summary: Prevent chains of DirectByteBuffers forming when slicing
the thread's cached buffer
Key: QPID-6770
URL: https://issues.apache.org/jira/browse/QPID-6770
Project: Qpid
Issue Type: Bug
Components: Java Broker
Reporter: Keith Wall
The QBB has a per thread cached DirectByteBuffer. Callers requiring a buffer
are served slices of this buffer. The algorithm currently takes a slice of
the buffer for the caller, then takes a second slice to represent the bytes
that remain unused in the buffer and discards the original references. This
approach has the unfortunate consequence that a chain of ByteBuffers forms as
each DirectByteBuffer slice references its parent via its attachment field.
The following posting describes the issue:
http://mail.openjdk.java.net/pipermail/core-libs-dev/2014-February/024857.html
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