JRuby FFI sometimes hangs or sometimes segfaults on
org.jruby.ext.ffi.jffi.DefaultMethodFactory$Signed32Invoker.invoke
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Key: JRUBY-5046
URL: http://jira.codehaus.org/browse/JRUBY-5046
Project: JRuby
Issue Type: Bug
Components: Extensions
Affects Versions: JRuby 1.5.1
Environment: OSX 10.6.4
java -version
java version "1.6.0_20"
Java(TM) SE Runtime Environment (build 1.6.0_20-b02-279-10M3065)
Java HotSpot(TM) 64-Bit Server VM (build 16.3-b01-279, mixed mode)
jruby 1.5.1 (ruby 1.8.7 patchlevel 249) (2010-06-06 f3a3480) (Java HotSpot(TM)
64-Bit Server VM 1.6.0_20) [x86_64-java]
Reporter: Chuck Remes
When running the ffi-rzmq gem with this code (http://gist.github.com/552680),
at exit it sometimes exits cleanly, sometimes hangs and sometimes segfaults
(with http://gist.github.com/554010).
The ffi-rzmq gem is a Ruby FFI wrapper for libzmq (zeromq.org) which is a C
library.
During one of the hangs I did a thread dump from jvisualvm. The last FFI method
I saw in the stack was the one in the title. Here are the dumps of all active
threads.
http://gist.github.com/554062
It's hard to reproduce this consistently probably due to the Ruby threads.
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