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From: Eric Wong <e@80x24.org>
To: rainbows-public@bogomips.org
Subject: [PATCH] speed up QUIT for users of the unicorn worker_loop
Date: Thu, 15 Oct 2015 01:37:33 +0000
Message-ID: <20151015013733.27968-1-e@80x24.org> (raw)

WriterThreadPool, WriterThreadSpawn, Base, and potentially
other rarely-used concurrency options experienced slow shutdowns
due to the destruction of a listener socket failing to wake up
a thread in IO.select.

Send ourselves a signal to interrupt the IO.select call in
the main thread to force the wakeup.
 lib/rainbows.rb | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/rainbows.rb b/lib/rainbows.rb
index 3bebf34..0af5620 100644
--- a/lib/rainbows.rb
+++ b/lib/rainbows.rb
@@ -93,6 +93,9 @@ module Rainbows
       tmp.each { |s| s.close rescue nil }.clear
       @at_quit.each { |task| task.call }
+      # XXX hack to break out of IO.select in worker_loop for some models
+      Process.kill(:QUIT, $$)

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