From: Christopher Bottaro <redmine@...>
Date: 2011-01-12T01:59:09+09:00
Subject: [ruby-core:34362] [Ruby 1.9-Bug#4266][Open] Timeouts in threads cause "ThreadError: deadlock; recursive locking"


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Bug #4266: Timeouts in threads cause "ThreadError: deadlock; recursive lo=
cking"
http://redmine.ruby-lang.org/issues/show/4266

Author: Christopher Bottaro
Status: Open, Priority: Normal
Category: core, Target version: 1.9.2
ruby -v: ruby 1.9.2p136 (2010-12-25 revision 30365) [x86_64-darwin10.6.0]=


Run the attached file (or this pastie http://pastie.org/1448542) a few ti=
mes and you'll eventually get:

ThreadError: deadlock; recursive locking:
<internal:prelude>:8:in `lock'
<internal:prelude>:8:in `synchronize'
bin/deadlock_test.rb:86:in `block (4 levels) in <main>'
/Users/cjbottaro/.rvm/rubies/ruby-1.9.2-p136/lib/ruby/1.9.1/timeout.rb:57=
:in `timeout'
bin/deadlock_test.rb:85:in `block (3 levels) in <main>'
bin/deadlock_test.rb:83:in `times'
bin/deadlock_test.rb:83:in `block (2 levels) in <main>'

I've had the script run successfully over 5 times in a row before getting=
 the errors, so if it doesn't happen the first few times... keep trying.

The problem doesn't happen in 1.8.7 or Jruby, but does happen in 1.9.1.


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http://redmine.ruby-lang.org

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