RFR: 8152896: Convert PrintCompressedOopsMode to Unified Logging

[harold seigel]

Hi Rachel,

Does hotspot/test/runtime/CompressedOops/UseCompressedOops.java also 
need to change?

     private static OutputAnalyzer testCompressedOops(ArrayList<String> 
flags1, String... flags2) throws Exception {
         ArrayList<String> args = new ArrayList<>();

         // Always run with these three:
         args.add("-XX:+UnlockDiagnosticVMOptions");
         args.add("-XX:+PrintCompressedOopsMode");


Also, I think -XX:+UnlockDiagnosticVMOptions can be removed from this 
test and from CompressedClassPointers.java.

Thanks, Harold

On 4/5/2016 2:00 PM, Rachel Protacio wrote:
> Hello,
>
> Please review this change, converting -XX:+PrintCompressedOopsMode to 
> -Xlog:gc+heap. The existing diagnostic flag has been aliased to the 
> info level of this tagset (for the "Heap address" message that for 
> example appears in the hs_err file), and there are both debug and 
> trace levels of logging available as well, as per our established 
> schema for assigning levels.
>
> Bug: https://bugs.openjdk.java.net/browse/JDK-8152896
> Open webrev: http://cr.openjdk.java.net/~rprotacio/8152896.00/
>
> Passes JPRT and RBT quick/non-colo tests.
>
> Thanks!
> Rachel