RFR: 8022853: add ability to load uncompressed object and Klass references in a compressed environment to Unsafe

Coleen Phillimore coleen.phillimore at oracle.com
Wed Apr 22 20:42:47 UTC 2015

This looks really good.

On 4/22/15, 1:56 PM, Christian Thalinger wrote:
> https://bugs.openjdk.java.net/browse/JDK-8022853
> 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.
> http://cr.openjdk.java.net/~twisti/8022853/hotspot/webrev.01/
> http://cr.openjdk.java.net/~twisti/8022853/jdk/webrev.01/

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