RFR: 8253453: SourceFileInfoTable should be allocated lazily

Mon Oct 19 10:54:14 UTC 2020

On Mon, 19 Oct 2020 10:34:35 GMT, Christian Hagedorn <chagedorn at openjdk.org> wrote:

>> Avoids allocating and clearing a 128Kb large ResourceHashTable eagerly on startup
>> 
>> It's only used when PrintInterpreter is enabled - which prints out the interpreter during bootstrap - so proper
>> synchronization seems excessive.
>> Testing: tier1, verified source line comments retained with `-XX:+PrintInterpreter`
>
> Looks good.

@neliasso @chhagedorn: Thank you both for reviewing!

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PR: https://git.openjdk.java.net/jdk/pull/724