RFR: 8293067: (fs) Implement WatchService using system library (macOS)

[Michael Hall]

> On Feb 4, 2023, at 1:23 AM, Maxim Kartashev <mkartashev at openjdk.org> wrote:
> 
> On Fri, 3 Feb 2023 14:07:36 GMT, Maxim Kartashev <mkartashev at openjdk.org> wrote:
> 
>>>> [JetBrains Runtime](https://github.com/JetBrains/JetBrainsRuntime) has FSEvents-based implementation of WatchService on macOS.
>>> 
>>> Is this similar to what was proposed here, I'm curious if the same issues were encountered when running the tests across a wider range of macOS releases.
>> 
>> @AlanBateman It is the implementation this one was based upon. No _known_ bugs exist there at this moment in time (tests were run on IntelliJ infrastructure, of course).
> 
>> @mkartashev Do you intend to continue work on this PR? If not, then we could potentially take over the work if that is acceptable.
> 
> I plan to have a shot at using newer (not declared deprecated) API for scheduling the event stream. If that fails, this implementation is up for grabs for all I care.
> 
> -------------
> 
> PR: https://git.openjdk.org/jdk/pull/10140

As I remember working on this was difficult because Maxim and I weren’t able to reproduce whatever errors the jdk testing framework was getting.

If you say you are done, and the PR has been closed by openjdk, I’ll grab a copy. It would probably be easier than trying to extract it from the GitHub project you posted.

How will your changes be tested if the PR has been closed?