Restrict async to MRI Ruby only #406
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The plan is to support them, it's just low priority. |
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Jruby has it's own async Implementation. So anyone on JRuby already has primitives like Promises, Futures, and ThreadPoolExecutor, which don't require a fiber scheduler shim. People using these 2 engines mix Java and Ruby in the same codebase. |
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There are plans to unify them using virtual threads. |
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Summary
Remove JRuby and TruffleRuby from CI configuration, add required_ruby_engine restriction to gemspec, and simplify Ruby engine checks in scheduler.rb.
Async depends on gems that require C compilation (io-event), and Java engines already have their own async counterparts.