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Date: Thu, 17 Jan 2008 15:01:54 -0800 (PST)
From: "Nick Sieger (JIRA)" <jira@apache.org>
To: buildr-commits@incubator.apache.org
Subject: [jira] Commented: (BUILDR-3) Buildr being usable on JRuby
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    [ https://issues.apache.org/jira/browse/BUILDR-3?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12560139#action_12560139 ] 

Nick Sieger commented on BUILDR-3:
----------------------------------

If JRuby running buildr should need to fork itself, you should know that the default behavior of JRuby is to spawn another instance of itself in the same VM. If you want to pass Java VM arguments, then you'll want to actually fork a subprocess VM.  To do this:

{noformat}
  require 'rbconfig'
  require 'jruby'
  RUBY = File.join(Config::CONFIG['bindir'], Config::CONFIG['ruby_install_name'])
  def jruby(*args)
    prev_in_process = JRuby.runtime.instance_config.run_ruby_in_process
    JRuby.runtime.instance_config.run_ruby_in_process = false
    system "#{RUBY} #{args.join(' ')}"
  ensure
    JRuby.runtime.instance_config.run_ruby_in_process = prev_in_process
  end
{noformat}


> Buildr being usable on JRuby
> ----------------------------
>
>                 Key: BUILDR-3
>                 URL: https://issues.apache.org/jira/browse/BUILDR-3
>             Project: Buildr
>          Issue Type: New Feature
>         Environment: JDK 1.6. 
> JRuby SNAPSHOT: jruby-complete-1.1-20071211.100054-17
>            Reporter: Victor Hugo Borja
>            Assignee: Assaf Arkin
>         Attachments: 0001-Added-the-tools.jar-to-the-systemClassLoader-this-m.patch, 0001-BuildR-is-usable-in-JRuby.patch, 0001-More-JRuby-1.1RC1-integration-changes-for-buildr-1.patch, 0002-Use-RubyString.to_java_bytes-instead-of-unpacking-th.patch
>
>
> Attached patch makes buildr-HEAD usable on JRuby. See the patch changelog for details.

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