From: "we4tech (nhm tanveeer hossain khan)" <hasan83bd@...>
Date: 2013-04-30T00:12:25+09:00
Subject: [ruby-core:54697] [ruby-trunk - Bug #6634] Deadlock with join and ConditionVariable


Issue #6634 has been updated by we4tech (nhm tanveeer hossain khan).

File thread_deadlock_error_test.rb added

Hi there,

I've faced similar problem with ruby 2.0.0p0 (2013-02-24 revision 39474) [x86_64-darwin12.1.0] (installed with rvm)

Please checkout my attached code. Let me know if I could help you more. Or if i'm doing something dumb :)
----------------------------------------
Bug #6634: Deadlock with join and ConditionVariable
https://bugs.ruby-lang.org/issues/6634#change-39043

Author: meh. (meh. I don't care)
Status: Rejected
Priority: Normal
Assignee: mame (Yusuke Endoh)
Category: core
Target version: 2.0.0
ruby -v: ruby 1.9.3p194 (2012-04-20 revision 35410) [x86_64-linux]
Backport: 


I'm getting a fatal deadlock in one of my gems, it's a simple threadpool implementation.

The library works both in Rubinius and JRuby, so I guess it's a bug.

The gem is here: https://github.com/meh/ruby-threadpool

The example that crashes is attached.

Basically it raises a fatal deadlock if you join a thread and then call ConditionVariable#wait, I'm not 100% sure if the bug is in the ConditionVariable or what, all I know is that it happens in that situation and that it works on Rubinius and JRuby.


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