Please review a small fix, related to unified logging:
http://cr.openjdk.java.net/~iklam/8079408-improve-class-load-log/
Bug: 8079408 Improve class loading log (with unified logging)
https://bugs.openjdk.java.net/browse/JDK-8079408
Summary of fix:
This fix has 2 parts:
[a] Reimplement TraceClassData and TraceClassLoading as
-Xlog:classloaderdata and -Xlog:classload
[b] Add more detailed info to -Xlog:classload so we can perform
more analysis
Example:
java -Xlog:classloaderdata=debug,classload=trace:file=log.txt \
-cp ~/tests Hello
I have completely replaced TraceClassData with -Xlog:classloaderdata.
The TraceClassData flag has been removed from globals.hpp.
Since many existing tools use TraceClassLoading, I think it's better to
deprecate it, but otherwise don't change how it works. Instead, we
add a
new -Xlog:classload flag that's independent of the old
TraceClassLoading
flag.
(note: the deprecation of TraceClassLoading will be done in a
separate bug).
I have also not tied "-verbose:class" with the classload log, since I
think "-verbose:class" is obsolete and should be replaced by -Xlog.
Tests:
RBT:
I ran these testlists using RBT (more than 20000 total classes on
Linux/Windows/MacOS/solaris) and saw no new failures. I think this
means
no existing tests depend on the removed -XX:+TraceClassLoaderData flag.
hotspot/test/:hotspot_all
vm.parallel_class_loading.testlist
vm.regression.testlist
vm.runtime.testlist
vm.tmtools.testlist
nsk.sajdi.testlist
nsk.stress.testlist
nsk.stress.jck.testlist
vm.gc.testlist
vm.metaspace.testlist
Thanks
- Ioi
