Kernel.system & threads does not work well together
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Key: JRUBY-3597
URL: http://jira.codehaus.org/browse/JRUBY-3597
Project: JRuby
Issue Type: Bug
Components: Core Classes/Modules
Affects Versions: JRuby 1.3
Environment: jruby 1.3.0 (ruby 1.8.6p287) (2009-04-22 6586) (Java
HotSpot(TM) Server VM 1.6.0_10) [i386-java]
jruby 1.3.0 (ruby 1.8.6p287) (2009-04-22 6586) (Java HotSpot(TM) Client VM
1.6.0_04) [x86-java]
Reporter: Johan Holmberg
Attachments: error-minimal.rb
I had an application with several threads, where each thread used Kernel.system
independently of the other threads. But often a command run by Kernel.system
that is supposed to work fails for some reason. It seems like JRuby can't
handle that different threads use Kernel.system *at the same time*.
I used a "jruby-complete.jar" built locally from source (from github, revision
"488c32b7a0cb0d5efd7330e4d5f7fdffe78545c4", from 20-Apr 2009). I get similar
errors on Linux, XP and Vista.
I have made a tiny test-program that exhibits the same problem as my original
script. See the attached file "error-minimal.rb". The script is supposed to
echo the numbers 1..20 by calling the external command "echo" for each number.
But a (variable) number of the commands fails.
When testing on Windows I created a small "echo"-clone to be sure that I ran a
real EXE-file.
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