RFR: 8286540: Build failure caused by missing DefaultPollProvider implementation on AIX

[Brian Burkhalter]

On Wed, 11 May 2022 16:52:44 GMT, Tyler Steele <tsteele at openjdk.org> wrote:

> This change provides a stub implementation of DefaultPollerProvider on AIX. This is a temporary measure to ensure AIX can still be built while work on a full implementation is under way.

src/java.base/aix/classes/sun/nio/ch/PollsetPoller.java line 42:

> 40:     int fdVal() {
> 41:         // Stub
> 42:         throw new RuntimeException("Unimplemented on AIX");

I think you'd do better with an [UnsupportedOperationException](https://docs.oracle.com/en/java/javase/18/docs/api/java.base/java/lang/UnsupportedOperationException.html).

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PR: https://git.openjdk.java.net/jdk/pull/8658