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From: Eric Wong <normalperson-rMlxZR9MS24@public.gmane.org>
To: Rainbows! list <rainbows-talk-GrnCvJ7WPxnNLxjTenLetw@public.gmane.org>
Subject: Re: Weird random Zbatery exception
Date: Fri, 2 Dec 2011 14:47:11 -0800	[thread overview]
Message-ID: <20111202224711.GA23422@dcvr.yhbt.net> (raw)
In-Reply-To: <CABAijKG5VwHN9p9p_4R4oSruFVH7j3TY0Z6twxLSLpKoxcO8jw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>

Damian Janowski <jano-eWlILCNyKRBBDgjK7y7TUQ@public.gmane.org> wrote:
> I'm giving Zbatery a try, currently testing with ThreadPool.

Thanks for giving it a try! :)

> I can't figure out precise steps to trigger this exception, but it
> happens after a few GET/POST requests:

> /usr/local/lib/ruby/gems/1.9.1/gems/unicorn-4.1.1/lib/unicorn/http_server.rb:361:in
> `awaken_master': undefined method `kgio_trywrite' for nil:NilClass
> (NoMethodError)

Does your application fork/exec other processes?  (`` or "system()",
popen all included).

> (Needless to say, I googled already without much luck).

I think you found a new bug, does the following patch fix it?

diff --git a/lib/zbatery.rb b/lib/zbatery.rb
index 735b1e6..17d7c06 100644
--- a/lib/zbatery.rb
+++ b/lib/zbatery.rb
@@ -82,6 +82,7 @@ module Rainbows
       trap(:USR1) { Thread.new { reopen_logs } }
       trap(:USR2) { Thread.new { reexec } }
       trap(:HUP) { Thread.new { reexec; stop } }
+      trap(:CHLD, "IGNORE")
 
       # technically feasible in some cases, just not sanely supportable:
       %w(TTIN TTOU WINCH).each do |sig|
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  parent reply	other threads:[~2011-12-03  0:05 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-12-02 19:39 Weird random Zbatery exception Damian Janowski
     [not found] ` <CABAijKG5VwHN9p9p_4R4oSruFVH7j3TY0Z6twxLSLpKoxcO8jw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2011-12-02 22:47   ` Eric Wong [this message]
     [not found]     ` <20111202224711.GA23422-yBiyF41qdooeIZ0/mPfg9Q@public.gmane.org>
2011-12-02 23:40       ` Eric Wong
     [not found]         ` <20111202234003.GA27418-yBiyF41qdooeIZ0/mPfg9Q@public.gmane.org>
2011-12-03  1:46           ` Eric Wong
     [not found]             ` <20111203014632.GA3639-yBiyF41qdooeIZ0/mPfg9Q@public.gmane.org>
2011-12-05 18:29               ` Damian Janowski
2011-12-05 18:02           ` Damian Janowski
2011-12-05 18:02       ` Damian Janowski

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