RFR: 8022853: add ability to load uncompressed object and Klass references in a compressed environment to Unsafe
christian.thalinger at oracle.com
Wed Apr 22 19:01:44 UTC 2015
> On Apr 22, 2015, at 11:44 AM, John Rose <john.r.rose at oracle.com> wrote:
> Reviewed, if you update the javadoc for Unsafe.getUncompressedObject. — John
Done. Thanks, I missed that.
> On Apr 22, 2015, at 10:56 AM, Christian Thalinger <christian.thalinger at oracle.com> wrote:
>> In some native data structures of the VM oops are stored uncompressed even if compressed oops are turned on, for example Klass::_java_mirror. Java code which is tightly coupled with the VM should have the ability to read and write such fields.
>> This additional Unsafe API make the implementation of JEP 243: Java-Level JVM Compiler Interface simpler.
More information about the hotspot-dev