RFR: 8330006: Serial: Extract out ContiguousSpace::block_start_const [v2]

[Guoxiong Li]

On Wed, 10 Apr 2024 13:53:57 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

> My prev msg was probably unclear: I meant instead of adding `block_start_const` to the class, defining them as static function in cpp. For example, `fill_range` in `serialBlockOffsetTable.cpp`.
> 
> If possible, the (private) api will be smaller.

Sorry, I misunderstood your meaning. Such static method seems good. Will fix it later.

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PR Review Comment: https://git.openjdk.org/jdk/pull/18722#discussion_r1559502817