RFR: 8361055: Serial: Inline SerialHeap::process_roots [v3]

[Albert Mingkun Yang]

On Tue, 15 Jul 2025 06:04:34 GMT, Kim Barrett <kbarrett at openjdk.org> wrote:

> Interleaving comments in each place mentioning the missing calls, and an
explanatory comment in each place about the overall task would be helpful.

Added comments.

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PR Comment: https://git.openjdk.org/jdk/pull/26038#issuecomment-3072645242