RFR: JDK-8256844: Make NMT late-initializable

[Thomas Stuefe]

On Fri, 30 Jul 2021 18:28:44 GMT, Zhengyu Gu <zgu at openjdk.org> wrote:

>> So, you are saying that there is no memory that is malloc'd pre-NMT-init phase and freed post-NMT-init phase?
>
> Okay, I see. It just leaks those memory, so the table can be read-only.

Exactly. There are a few allocs that either get free'd or realloc'ed post-init, but not enough to make freeing them worth it if it means having to serialize access to the lookup table.

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PR: https://git.openjdk.java.net/jdk/pull/4874