RFR: 8253453: SourceFileInfoTable should be allocated lazily

[Christian Hagedorn]

On Sun, 18 Oct 2020 16:50:31 GMT, Claes Redestad <redestad 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.

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Marked as reviewed by chagedorn (Reviewer).

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