RFR: 8298048: Combine CDS archive heap into a single block

[Ioi Lam]

On Sat, 8 Apr 2023 07:14:30 GMT, Thomas Stuefe <stuefe at openjdk.org> wrote:

> This looks like a nice simplification. Will you also combine all mappings at OS level to a single one, so that you only need one mmap call?

Now there's a single call to mmap() in FileMapInfo::map_heap_regions_impl_inner(). This reminds me that I should remove the "s" from "heap_regions" in the function names. Will do that in my next commit.

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PR Comment: https://git.openjdk.org/jdk/pull/13284#issuecomment-1503827701