AdoptOpenJDK/jitwatch

TraceClassLoading is Expired in JDK17

chriswhocodes opened this issue · 3 comments

chriswhocodes commented

https://chriswhocodes.com/hotspot_options_openjdk8.html?s=TraceClassLoading

TraceClassLoading is used in the JITWatch Sandbox. Option is "Expired" in JDK17 so the JVM fails to start when the Sandbox runs with this option.

Options:
detect java version and remove switch from runtime options as appropriate
Remove reliance on TraceClassLoading (including producing skeleton MetaClass objects from LogCompilation signatures only

chriswhocodes commented

Fixed in bcb5ba8 by removing -XX:+TraceClassLoading - not needed by Sandbox anyway

chrisseaton commented

It's still listed in the wiki though?

chriswhocodes commented

Thanks for letting me know. The correct fix is for me to support the pre JDK9 -XX:+TraceClassloading and also the post JDK9 -Xlog:class+load=info if detected.

I'm working on a radical overhaul of the JITWatch classloading which will fix a lot of the annoyances related to switching Java versions :)