still haven't found a great way to reproduce but I managed to reproduce if I let this script loop for a while:
# from RubyGems :
#
# autoload :Specification, 'rubygems/specification'
#
# suprisingly, rubygems.rb also explicitly requires after the autoload:
#
# require "rubygems/specification"
#
class Sample
def self.spec
Gem::Specification.dirs
end
end
$lock = java.util.concurrent.atomic.AtomicBoolean.new
threads = []
30.times.each do
threads << Thread.new {
while ! $lock.get
sleep 0.00001
end
Sample.spec
}
end
sleep 0.5
$lock.set true
sleep 1.0
threads.each { |t| p t.value }LAST=0
while [ $LAST -eq 0 ]; do
jruby -v -Xcompile.invokedynamic=true -Xjit.threshold=0 gem_spec_dirs.rb
LAST=$?
echo "LAST: $LAST"
done
~40th iteration I finally reproduce the loading issue (also reproduces on 9.2.11.1):
jruby 9.2.7.0 (2.5.3) 2019-04-09 8a269e3 Java HotSpot(TM) 64-Bit Server VM 25.171-b11 on 1.8.0_171-b11 +indy +jit [linux-x86_64]
warning: thread "Ruby-0-Thread-14: gem_spec_dirs.rb:29" terminated with exception (report_on_exception is true):
["/opt/local/rvm/gems/jruby-9.2.7.0@ls/specifications", "/opt/local/rvm/gems/jruby-9.2.7.0@global/specifications"]
["/opt/local/rvm/gems/jruby-9.2.7.0@ls/specifications", "/opt/local/rvm/gems/jruby-9.2.7.0@global/specifications"]
["/opt/local/rvm/gems/jruby-9.2.7.0@ls/specifications", "/opt/local/rvm/gems/jruby-9.2.7.0@global/specifications"]
["/opt/local/rvm/gems/jruby-9.2.7.0@ls/specifications", "/opt/local/rvm/gems/jruby-9.2.7.0@global/specifications"]
["/opt/local/rvm/gems/jruby-9.2.7.0@ls/specifications", "/opt/local/rvm/gems/jruby-9.2.7.0@global/specifications"]
["/opt/local/rvm/gems/jruby-9.2.7.0@ls/specifications", "/opt/local/rvm/gems/jruby-9.2.7.0@global/specifications"]
["/opt/local/rvm/gems/jruby-9.2.7.0@ls/specifications", "/opt/local/rvm/gems/jruby-9.2.7.0@global/specifications"]
["/opt/local/rvm/gems/jruby-9.2.7.0@ls/specifications", "/opt/local/rvm/gems/jruby-9.2.7.0@global/specifications"]
["/opt/local/rvm/gems/jruby-9.2.7.0@ls/specifications", "/opt/local/rvm/gems/jruby-9.2.7.0@global/specifications"]
["/opt/local/rvm/gems/jruby-9.2.7.0@ls/specifications", "/opt/local/rvm/gems/jruby-9.2.7.0@global/specifications"]
["/opt/local/rvm/gems/jruby-9.2.7.0@ls/specifications", "/opt/local/rvm/gems/jruby-9.2.7.0@global/specifications"]
["/opt/local/rvm/gems/jruby-9.2.7.0@ls/specifications", "/opt/local/rvm/gems/jruby-9.2.7.0@global/specifications"]
["/opt/local/rvm/gems/jruby-9.2.7.0@ls/specifications", "/opt/local/rvm/gems/jruby-9.2.7.0@global/specifications"]
NameError: uninitialized constant Gem::Specification
Did you mean? Gem::Specification
Gem::StubSpecification
const_missing at org/jruby/RubyModule.java:3742
spec at gem_spec_dirs.rb:32
gem_spec_dirs.rb at gem_spec_dirs.rb:43
NameError: uninitialized constant Gem::Specification
Did you mean? Gem::Specification
Gem::StubSpecification
const_missing at org/jruby/RubyModule.java:3742
spec at gem_spec_dirs.rb:32
gem_spec_dirs.rb at gem_spec_dirs.rb:43
NOTE: the Gem::Specification auto-loading part stayed the same between RGs 2.7.9 (JRuby 9.2.7.0) -> RGs 3.0.6 (9.2.11)
still haven't found a great way to reproduce but I managed to reproduce if I let this script loop for a while:
~40th iteration I finally reproduce the loading issue (also reproduces on 9.2.11.1):
NOTE: the
Gem::Specificationauto-loading part stayed the same between RGs 2.7.9 (JRuby 9.2.7.0) -> RGs 3.0.6 (9.2.11)