Hi Stefan,
Other than the getAddressField to getField change and the comments by
Erik, I just have a couple of nits to add.
1. This line in VMOopHandle.java can be removed:
31 import sun.jvm.hotspot.runtime.VMObjectFactory;
2. The copyright year for some of the files need updation.
This looks good to me otherwise.
Thanks,
Jini.
On 2/11/2019 2:09 PM, Stefan Karlsson wrote:
Hi all,
Please review this patch to fix the resolving of oops inside the (VM)
OopHandles.
https://cr.openjdk.java.net/~stefank/8218734/webrev.01/
https://bugs.openjdk.java.net/browse/JDK-8218734
Before this patch the OopHandle::_obj was assumed to be located at
offset 0, and the SA resolved OopHandle (Klass::_java_mirror and
ClassLoaderData::_class_loader) without the required load barrier for
ZGC. I've added a new class VMOopHandle (The SA already has a
OopHandle), which handles the resolving (load or load + barrier).
The OopHandle type is grouped under the Oops section in vmStructs.cpp.
It's not an oop, so I added a newline to separate it out from the rest.
Any suggestion of a better location in that file?
Tested with the jtreg tests in serviceability/sa + patches to make ZGC
usable with the SA's hprof dumping.
Thanks,
StefanK
