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

[Stefan Karlsson]

On Mon, 2 Nov 2020 12:58:49 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

>  GC callers shouldn't really have to know what processing we're doing here.

I completely disagree with this. It's extremely important that the GC and Runtime code agrees on what this code does and where the GC *must* call it. Knowing the details allows us to skip calling this after mark end, but forces us to call it in relocate start, when objects should start to move. Though, I don't want to block this review because of this point, so if you still thinks that a non-descriptive name is better then we can argue that separately.

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