RFR: 8319522: Consolidate heap dump writer and other utilities

[Aleksey Shipilev]

On Mon, 6 Nov 2023 11:04:52 GMT, Yi Yang <yyang at openjdk.org> wrote:

> Move heap dump writer to heapdumpcompression.hpp and rename it to heapdumpwriter.hpp so that all heapdump utilities appears in the same file. A further refactor is remove AbstractDumpWriter and use DumpWriter directly.

Let me ask/suggest we do not this until most of the in-flight heap dump improvements are delivered. (For example, #16545). This would simplify the backports to previous JDK releases. Let's do this refactoring in early JDK 23?

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PR Comment: https://git.openjdk.org/jdk/pull/16520#issuecomment-1801617270