* Extract calls to purge_interrupt_queue
Move calls to Thread#purge_interrupt_queue to a module function. This
means if/when this pattern needs to change it can change in one place
instead of a dozen or more places.
* Update comment on purge_interrupt_queue [ci skip]
* Actions non MRI - use JDK11 on macOS, add Big Sur
* Actions MRI - add macOS Big Sur Ruby 2.7
* test/helper.rb - run setup in same Timeout block as test
* TestIntegrationSingle#test_int_refuse - skip on JRuby
Seems to intermittently lockup CI
* TestLauncher#test_puma_stats - fix intermittent non-MRI failure II
* test_out_of_band_server.rb - JRuby - add small sleep after server.run
* test_persistent.rb - JRuby - add small sleep after server.run
* test_puma_server.rb - JRuby - add small sleep after server.run
* Improve OOB hook
This moves the hook to be executed outside of busy loop
considering the thread to be truly idle at a time of execution
of the hook
* Further improvements to out-of-band hook
* Don't trigger OOB on partially-queued requests
* Don't accept new connections during OOB
* Move tests to `TestOutOfBandServer`
Co-authored-by: Kamil Trzcinski <ayufan@ayufan.eu>
Co-authored-by: Nate Berkopec <nate.berkopec@gmail.com>
