On Mon, 25 Jan 2021 00:05:52 GMT, Claes Redestad <[email protected]> wrote:
> This patch optimizes the code paths exercised by
> `String.class.getResource("String.class")` by:
>
> - Adding an ASCII fast-path to methods verifying strings in the jimage, which
> can then be done allocation-free
> - Avoiding the allocation of the `long[8]` attributes when verifying only for
> the purpose of verifying a path exists
> - Using the `JNUA.create` fast-path in `SystemModuleReader` (which should be
> OK since we just verified the given name is a JRT path)
> - Remove a redundant check in `Class::resolveName` and fitting the
> `StringBuilder` to size
This pull request has now been integrated.
Changeset: 2f893c2b
Author: Claes Redestad <[email protected]>
URL: https://git.openjdk.java.net/jdk/commit/2f893c2b
Stats: 393 lines in 8 files changed: 263 ins; 63 del; 67 mod
8260337: Optimize ImageReader lookup, used by Class.getResource
Reviewed-by: jlaskey, sundar
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PR: https://git.openjdk.java.net/jdk/pull/2212
