Utilize MLVM coroutines in Enumerator and Fiber
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Key: JRUBY-5461
URL: http://jira.codehaus.org/browse/JRUBY-5461
Project: JRuby
Issue Type: Improvement
Components: Core Classes/Modules
Reporter: Charles Oliver Nutter
Attachments: coro_fibers.patch
This bug will track work to integrate support for Lukas Stadler's JVM
coroutines (part of the MLVM family of projects) into Enumerator#next/rewind
and Fiber.
Currently both features are implemented using native threads. This works, but
makes them considerably heavier than they ought to be. Lukas's work to add
coroutines to the JVM makes it possible for us to have very efficient
coroutine-like libraries like Enumerator#next and Fiber. We should incorporate
support for his work, conditionally loaded only when it is available.
I'm attaching a coroutine-based-Fibers patch provided by Lukas. This is an old
patch that needs updating, but it may not take too much to do that. We also
would need to isolate this and have a thread-based impl that we use on non-coro
JVMs.
There's also some early work in the "coro" branch to make Enumerator#next and
Enumerator#rewind use Lukas's coroutines.
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