How to get reference processing logging?

[Thomas Schatzl]

Hi,

On Wed, 2016-12-07 at 11:08 +0000, Andrew Haley wrote:
> I've tried "-Xlog:gc::ref" and "-Xlog:gc=ref" but neither works.

"-Xlog:gc+ref=debug"

> 
> I want to see this output:
> 
>   log_debug(gc, ref)("Ref Counts: Soft: " SIZE_FORMAT " Weak: "
> SIZE_FORMAT " Final: " SIZE_FORMAT " Phantom: " SIZE_FORMAT,
>                      stats.soft_count(), stats.weak_count(),
> stats.final_count(), stats.phantom_count());
>   log_develop_trace(gc, ref)("JNI Weak Reference count: "
> SIZE_FORMAT, count_jni_refs());
> 
> 
> I tried -Xlog:help and searc hed on the web for information about the
> -Xlog syntax, but no luck.

-Xlog:help gives a pretty comprehensive output with BNF syntax
description here. It also includes a lot of examples.

Particularly the sentence below the BNF string gives an explanation of
"what" should be.

Maybe you have some suggestions to improve the text?

Thanks,
  Thomas