Hi Mark,
Thanks for the feedback, I will follow up on this.
Rgds,Rory
On 11/09/2014 19:50, Mark Thomas wrote:
On 11/09/2014 14:59, Rory O'Donnell Oracle, Dublin Ireland wrote:
Hi Mladen/Mark,
As part of the preparations for JDK 9, Oracle’s engineers have been
analyzing open source projects like yours to understand usage.
One area of concern involves identifying compatibility problems, such as
reliance on JDK-internal APIs.
Our engineers have already prepared guidance on migrating some of the
more common usage patterns of JDK-internal APIs to supported public
interfaces. The list is on the OpenJDK wiki [0], along with instructions
on how to run the jdeps analysis tool yourself .
We have analyzed jar files within apache-tomcat-8.0.12 and found 0 jar
files depending on JDK-Internal APIs.
However, jdeps is a static analysis tool and therefore use of
JDK-internal APIs via reflection or dynamically generated bytecode are
not reported by the tool, while such a dependency should also be replaced.
If you have any feedback please reply either on this list or to me
directly.
We do make use JDK-Internal APIs but we always do it via reflection as
it is nearly always vendor specific.
The protection against JRE triggered memory leaks is a source of a lot
of internal API usage:
http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/catalina/core/JreMemoryLeakPreventionListener.java?view=annotate
It would be great of there were public APIs we could use instead or
better still if the various memory leaks could be fixed.
Other than that, I can't think of any off-hand. Use the internal API is
something we try to avoid if at all possible.
Mark
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Rgds,Rory O'Donnell
Quality Engineering Manager
Oracle EMEA , Dublin, Ireland
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