[#97652] [Ruby master Feature#16746] Endless method definition — mame@...

Issue #16746 has been reported by mame (Yusuke Endoh).

24 messages 2020/04/01

[#97655] [Ruby master Misc#16747] Repository reorganization request — shyouhei@...

Issue #16747 has been reported by shyouhei (Shyouhei Urabe).

12 messages 2020/04/01

[#97745] [Ruby master Bug#16769] Struct.new(..., immutable: true) — takashikkbn@...

Issue #16769 has been reported by k0kubun (Takashi Kokubun).

10 messages 2020/04/08

[#97803] [Ruby master Misc#16775] DevelopersMeeting20200514Japan — mame@...

Issue #16775 has been reported by mame (Yusuke Endoh).

20 messages 2020/04/10

[#97810] [Ruby master Bug#16776] Regression in coverage library — deivid.rodriguez@...

Issue #16776 has been reported by deivid (David Rodr=EDguez).

11 messages 2020/04/10

[#97828] [Ruby master Misc#16778] Should we stop vendoring default gems code? — deivid.rodriguez@...

Issue #16778 has been reported by deivid (David Rodr=EDguez).

37 messages 2020/04/11

[#97878] [Ruby master Feature#16786] Light-weight scheduler for improved concurrency. — samuel@...

Issue #16786 has been reported by ioquatix (Samuel Williams).

72 messages 2020/04/14

[#97893] [Ruby master Bug#16787] [patch] allow Dir.home to work for non-login procs when $HOME not set — salewski@...

Issue #16787 has been reported by salewski (Alan Salewski).

18 messages 2020/04/15

[#97905] [Ruby master Feature#16791] Shortcuts for attributes of Process::Status — 0xfffffff0@...

Issue #16791 has been reported by 0x81000000 (/ /).

10 messages 2020/04/16

[#97907] [Ruby master Bug#16792] Make Mutex held per Fiber instead of per Thread — eregontp@...

Issue #16792 has been reported by Eregon (Benoit Daloze).

9 messages 2020/04/16

[#97989] [Ruby master Misc#16802] Prefer use of RHS assigment in documentation — samuel@...

Issue #16802 has been reported by ioquatix (Samuel Williams).

10 messages 2020/04/21

[#97992] [Ruby master Misc#16803] Discussion: those internal macros reside in public API headers — shyouhei@...

Issue #16803 has been reported by shyouhei (Shyouhei Urabe).

14 messages 2020/04/21

[#98026] [Ruby master Bug#16809] ruby testsuite fails on s390x alpine (musl) with --with-coroutine=copy — ncopa@...

Issue #16809 has been reported by ncopa (Natanael Copa).

11 messages 2020/04/23

[#98034] [Ruby master Feature#16812] Allow slicing arrays with ArithmeticSequence — zverok.offline@...

Issue #16812 has been reported by zverok (Victor Shepelev).

12 messages 2020/04/23

[#98044] [Ruby master Bug#16814] Segmentation fault in GC while running test/ruby/test_fiber.rb on s390x — Rei.Odaira@...

Issue #16814 has been reported by ReiOdaira (Rei Odaira).

14 messages 2020/04/24

[#98059] [Ruby master Bug#16816] Prematurely terminated Enumerator should stay terminated — headius@...

Issue #16816 has been reported by headius (Charles Nutter).

9 messages 2020/04/24

[#98066] [Ruby master Feature#16818] Rename `Range#%` to `Range#/` — sawadatsuyoshi@...

Issue #16818 has been reported by sawa (Tsuyoshi Sawada).

11 messages 2020/04/26

[ruby-core:97889] [Ruby master Feature#14736] Thread selector for flexible cooperative fiber based concurrency

From: samuel@...
Date: 2020-04-15 00:47:50 UTC
List: ruby-core #97889
Issue #14736 has been updated by ioquatix (Samuel Williams).

Status changed from Open to Closed

Closing in favour of https://bugs.ruby-lang.org/issues/16786

----------------------------------------
Feature #14736: Thread selector for flexible cooperative fiber based concurrency
https://bugs.ruby-lang.org/issues/14736#change-85112

* Author: ioquatix (Samuel Williams)
* Status: Closed
* Priority: Normal
----------------------------------------
Ruby concurrency can be greatly enhanced by concurrent, deterministic IO.

Fibers have been shown many times to be a great abstraction for this purpose. The retain normal code flow and don't require any kind of Thread synchronisation. They are enjoyable to write code with because you don't have to concern yourself with thread synchronisation or other complicated issues.

The basic idea is that if some operation would block, it yields the Fiber, and other Fibers within the thread can continue to execute.

There are a number of ways to implement this. Here is a proof of concept to amend the existing `rb_io_wait_readable`/`rb_io_wait_writable`.

https://github.com/ruby/ruby/pull/1870

This design minimally affects the Ruby implementation and allows flexibility for selector implementation. With a small amount of work, we can support EventMachine (65 million downloads), NIO4r (21 million downloads). It would be trivial to back port.

This PR isn't complete but I am seeking feedback. If it's a good idea, I will do my best to see it through to completion, including support for EventMachine and NIO4r.

---Files--------------------------------
port_scanner_threadlet.rb (925 Bytes)


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