RFR: 8368633: (fs) Path.toRealPath(NOFOLLOW_LINKS) very slow on macOS [v3]

[Brian Burkhalter]

On Tue, 14 Oct 2025 06:34:17 GMT, Alan Bateman <alanb at openjdk.org> wrote:

>> Brian Burkhalter has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   8368633: Compare keys using a second DirectoryStream; improve micro
>
> src/java.base/unix/classes/sun/nio/fs/UnixPath.java line 988:
> 
>> 986:                                 break;
>> 987:                             }
>> 988:                         } catch (UnixException ignore) {
> 
> I looked back at our discussion in JDK-8295753 (pr/10843) as to why we catch UnixException here and the concern was about access to file that is not in the path. If you have cycles, then I think it would be good to dig into that further so understand which cases can be ignored and not ignored.

> The catching of UnixException needs to be re-examined but it pre-dates the changes in this PR.

I will look into it in a sequel to this PR.

-------------

PR Review Comment: https://git.openjdk.org/jdk/pull/27709#discussion_r2429547760