[jdk21u-dev] RFR: 8325028: (ch) Pipe channels should lazily set socket to non-blocking mode on first use by virtual thread

[Vladimir Petko]

Hi all,

This pull request contains a backport of commit [d1099033](https://github.com/openjdk/jdk/commit/d1099033ac63b9dd0dd6e3a7341db929e9e0e56e) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.

The commit being backported was authored by Alan Bateman on 8 Feb 2024 and was reviewed by Brian Burkhalter.

This change fixes a bug in jruby[1] that broken pipeline functions of Open3[1][2].

Thanks!

[1] https://github.com/jruby/jruby/issues/8069
[2] https://bugs.launchpad.net/ubuntu/+source/jruby/+bug/2054943

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Commit messages:
 - Backport d1099033ac63b9dd0dd6e3a7341db929e9e0e56e

Changes: https://git.openjdk.org/jdk21u-dev/pull/290/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=290&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8325028
  Stats: 84 lines in 2 files changed: 70 ins; 4 del; 10 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/290.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/290/head:pull/290

PR: https://git.openjdk.org/jdk21u-dev/pull/290