TCPServer#accept_nonblock blocks if it's already in #accept on another thread
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Key: JRUBY-5230
URL: http://jira.codehaus.org/browse/JRUBY-5230
Project: JRuby
Issue Type: Bug
Components: Standard Library
Affects Versions: JRuby 1.5.1, JRuby 1.6
Environment: ruby --version: jruby 1.6.0.dev (ruby 1.8.7 patchlevel
249) (2010-12-01 ea48d8d) (Java HotSpot(TM) 64-Bit Server VM 1.6.0_22)
[linux-amd64-java]
uname -a: Linux desk4 2.6.31-22-generic #63-Ubuntu SMP Thu Aug 19 00:23:50 UTC
2010 x86_64 GNU/Linux
java version "1.6.0_22"
Java(TM) SE Runtime Environment (build 1.6.0_22-b04)
Java HotSpot(TM) 64-Bit Server VM (build 17.1-b03, mixed mode)
Reporter: Alex Young
Assignee: Thomas E Enebo
Priority: Minor
Attachments: hanger.rb
The following code hangs on jruby-1.5.1 and jruby-1.6.0-dev:
require 'socket'
serv = TCPServer.new(0)
t = Thread.new{ serv.accept }
sleep(0.5)
p serv.accept_nonblock
On MRI, it outputs:
hanger.rb:6:in `accept_nonblock': Resource temporarily unavailable - accept(2)
(Errno::EAGAIN)
from hanger.rb:6
I've attached a test case which passes on MRI, but unfortunately it blocks on
JRuby. For some reason, the timeout doesn't fire (or is ignored), and I don't
know how to fix that.
I don't believe this is a duplicate of JRUBY-2223, which is the closest
reported bug I could find.
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