Hi Stefan,

On 2018/03/27 22:45, Stefan Johansson wrote:
Hi Yasumasa,

On 2018-03-27 10:56, Yasumasa Suenaga wrote:
Hi Stefan,

Thank you for your comment.
I updated webrev:

   webrev: http://cr.openjdk.java.net/~ysuenaga/JDK-8199519/webrev.01/
I think the usage of Optional in Expression.setRequired(bool) is a bit 
unnecessary. It will create temporary objects and there is no benefit from just 
doing two simple if-statements.

I fixed it in new webrev:
  http://cr.openjdk.java.net/~ysuenaga/JDK-8199519/webrev.02/


I also ran this patch (and the one using forcibly) on my single core VM and 
realized that this fix will have to include some awk-file updates to make the 
test in test/jdk/sun/tools/jstat pass when Serial in chosen as the default 
collector. The tests in test/jdk/sun/tools/jstatd/ are fine.

Can you share the failure report?
If it occurs in jstatClassloadOutput1.sh, it relates to JDK-8173942.


Thanks,

Yasumasa


Thanks,
Stefan
   submit-hs: mach5-one-ysuenaga-JDK-8199519-20180327-0652-16322


Thanks,

Yasumasa



2018-03-27 0:03 GMT+09:00 Stefan Johansson <stefan.johans...@oracle.com>:
Hi Yasumasa,

On 2018-03-22 11:35, Yasumasa Suenaga wrote:
Hi all,

Please review this change:

    JBS: https://bugs.openjdk.java.net/browse/JDK-8199519
webrev: cr.openjdk.java.net/~ysuenaga/JDK-8199519/webrev.00/
The fix seems to make things to work as expected. Manually tested it and
Mach5 also looks good.

I have some comments regarding the patch. I think 'forcibly' should be
rename to something more descriptive. Naming is never easy but I think
'required' would be better, as in, this column is required and not allowed
to print '-'. That would also render the code in ExpressionResolver.java to
be:
   return new Literal(isRequired ? 0.0d : Double.NaN);
I think that also better explains why we return 0 instead of NaN.

I would also like to see the forcibly/required state moved into the
Expression it self, that way we don't have to pass it around but can instead
do:
   return new Literal(e.isRequired() ? 0.0d : Double.NaN);

Thanks,
Stefan


After JDK-8153333, some jstat tests are failed because GCT in jstat output
is dash (-) if garbage collector is not concurrent collector e.g. Serial GC.
I fixed that GCT can be calculated correctly.

This change has been tested on Mach5 by Stefan.


Thanks,

Yasumasa


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