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No stdout with drip on jruby-9.1.15.0 #4942

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marvinTD opened this issue Jan 5, 2018 · 2 comments
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No stdout with drip on jruby-9.1.15.0 #4942

marvinTD opened this issue Jan 5, 2018 · 2 comments
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JRuby 9.1.16.0

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@marvinTD
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marvinTD commented Jan 5, 2018 •
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jruby -e 'puts "foobar"'

First run when there is no drip jvm started, I see the output. Once it starts using that idle jvm, there's no output. Similar experience when running rspec commands for a pretty barebones rails project.

I'm running rbenv to manage my versions. Additional details below

jruby --version
jruby 9.1.15.0 (2.3.3) 2017-12-07 929fde8 OpenJDK 64-Bit Server VM 24.95-b01 on 1.7.0_95-b00 +jit [linux-x86_64]
echo $JRUBY_OPTS
-J-Xmx2g

Also had the same issue with --dev on. More stuff:

env | grep drip                                                                                                                                                        
JAVACMD=/home/marvin/bin/drip
env | grep DRIP                                                                                                                                                          
DRIP_INIT=
DRIP_INIT_CLASS=org.jruby.main.DripMain
uname -a
Linux machine 4.10.0-42-generic #46~16.04.1-Ubuntu SMP Mon Dec 4 15:57:59 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

Edit:
Also tested with openjdk 1.8 and experienced the same issue. Obtained my version of drip using:
curl -L https://raw.githubusercontent.com/ninjudd/drip/master/bin/drip > ~/bin/drip
Looks like it's 0.2.5
@marvinTD
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marvinTD commented Jan 5, 2018

dripmain.rb

require_relative 'config/application'
require 'rubygems'
require 'bundler'

Bundler.require(:development, :test)

@headius
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headius commented Jan 25, 2018

Likely broken by work to make JDK 9 run better. Specifically, the logic that defaults to using real native stdio rather than JDK stdio.

headius added a commit that referenced this issue Jan 25, 2018
@headius
Disable forced native stdio when running under drip. Fixes #4942.
26315d5
@headius headius added this to the JRuby 9.1.16.0 milestone Jan 25, 2018
@headius headius closed this as completed Jan 25, 2018
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