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Date: Mon, 27 Aug 2018 20:27:14 +0000
From: Eric Wong <normalperson@yhbt.net>
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References: <redmine.issue-13618.20170601001407@ruby-lang.org>
 <redmine.issue-13618.20170601001407.768dad798664a140@ruby-lang.org>
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Subject: [ruby-core:88695] Re: [Ruby trunk Feature#13618] [PATCH] auto fiber
 schedule for rb_wait_for_single_fd and rb_waitpid
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> https://bugs.ruby-lang.org/issues/13618

Btw, many of my recent changes ([Misc #15014] (rb_hrtime_t)),
and process.c/thread*.c cleanups in r64542, r64575, r64576,
r64577 are preparatory work for this feature that were
beneficial regardless.

I have at least one more preparatory change which should be fairly
straightforward; but unfortunately makes some of the current code
more verbose (because of `container_of'):

  https://80x24.org/spew/20180827201123.4364-1-e@80x24.org/raw
  "unify sync_waiter, waitpid_state, waiting_fd w/ rb_sched_waiter"

I don't know when I will commit it, yet...

But even if it's more verbose, I think it helps illustrate the
concept of using ccan/list for scheduling our native threads.

Autoload has similar thread waiting, but I'm not sure if should
be affected by auto-fiber switching.