External command spawning in multiple concurrent threads can go boom
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Key: JRUBY-3057
URL: http://jira.codehaus.org/browse/JRUBY-3057
Project: JRuby
Issue Type: Bug
Components: Core Classes/Modules
Affects Versions: JRuby 1.1.4
Reporter: Thomas E Enebo
Our external processing code ends up requiring some ruby libraries. this does
not work well when n threads all require at the same time. Here is some code
to show it explode (may take multiple runs to see it):
{noformat}
threadPool = []
list = %w(aS bS cS dS eS fS gS hS)
for sys in list
threadPool << Thread.new(sys) {|numericalSys|
while 1
res = %x[date]
puts "#{numericalSys}, #{res}\n"
sleep 2
end
}
end
threadPool.each {|eachThread| eachThread.join}
{noformat}
Adding the file required before thread stuff will workaround the issue:
{noformat}
require 'rbconfig'
require 'jruby'
{noformat}
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