New threads are not immediately "visible" to the Thread.list method
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Key: JRUBY-879
URL: http://jira.codehaus.org/browse/JRUBY-879
Project: JRuby
Issue Type: Bug
Components: Core Classes/Modules
Affects Versions: JRuby 1.0.0
Environment: Linux, recent JRuby trunk build
Reporter: Martin Krauskopf
Try the following script:
{code}
a = Thread.new { Thread.current["name"] = "A"; Thread.stop }
b = Thread.new { Thread.current[:name] = "B"; Thread.stop }
c = Thread.new { Thread.current["name"] = "C"; Thread.stop }
#sleep 0.1
puts "c thread #{c.status}"
puts "b thread #{b.status}"
puts "a thread #{a.status}"
puts "main: #{Thread.main.status}"
Thread.list.each {|x| puts "#{x.inspect}: #{x[:name]}" }
puts "c thread #{c.status}"
puts "b thread #{b.status}"
puts "a thread #{a.status}"
puts "main: #{Thread.main.status}"
{code}
With JRuby I'm getting following "strange" output:
{code}
c thread run
b thread sleep
a thread sleep
main: run
#<Thread:0x1428ea sleep>: A
#<Thread:0x154864a sleep>: B
#<Thread:0x1d2068d run>:
c thread run
b thread sleep
a thread sleep
main: run
{code}
The _C_ thread says that it is running however is not listed with the {{list}}
function. With CRuby it works as expected. If {{sleep 0.1}} line is uncommented
everything starts to work with JRuby as well. Probably some implementation
detail. Might be without the real impact. Leaving _Priority_ up to the owner.
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