RFR: 8212879: Make JVMTI TagMap table concurrent [v2]

[Erik Österlund]

On Mon, 2 Nov 2020 12:50:23 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

>> src/hotspot/share/prims/jvmtiTagMap.cpp line 954:
>> 
>>> 952:                          o->klass()->external_name());
>>> 953:     return;
>>> 954:   }
>> 
>> Why is this done as a part of this RFE? Is this a bug fix that should be done as a separate patch?
>
> Because it crashed with my changes and didn't without.  I cannot recollect why.

I thought that we didn't load the archived heap from CDS, if JVMTI heap walker capabilities are in place, as we didn't want this kind of interactions. But maybe I'm missing something, since you said having this if statement here made a difference.

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PR: https://git.openjdk.java.net/jdk/pull/967