celluloid kablooey

fail.log

1.9.3@ringleader ~/Desktop/ringleader (master)*? ✘ ruby -d fail.rb 
Exception `LoadError' at /Users/nathan/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/site_ruby/1.9.1/rubygems.rb:1264 - cannot load such file -- rubygems/defaults/operating_system
Exception `LoadError' at /Users/nathan/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/site_ruby/1.9.1/rubygems.rb:1273 - cannot load such file -- rubygems/defaults/ruby
fail.rb:13: warning: assigned but unused variable - reader
Exception `LoadError' at /Users/nathan/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36 - cannot load such file -- celluloid
D, [2012-07-10T20:44:37.479585 #84660] DEBUG -- : starting process: ls
D, [2012-07-10T20:44:37.483400 #84660] DEBUG -- : started with pid 84662
Exception `FiberError' at /Users/nathan/.rvm/gems/ruby-1.9.3-p194@ringleader/gems/celluloid-0.11.0/lib/celluloid/task.rb:22 - fiber called across stack rewinding barrier
Exception `NilClass' at /Users/nathan/.rvm/gems/ruby-1.9.3-p194@ringleader/gems/celluloid-0.11.0/lib/celluloid.rb:349 - undefined method `stopped' for #<WaitForExit:0x007fed52114580>
/Users/nathan/.rvm/gems/ruby-1.9.3-p194@ringleader/gems/celluloid-0.11.0/lib/celluloid/calls.rb: [BUG] Segmentation fault
ruby 1.9.3p194 (2012-04-20 revision 35410) [x86_64-darwin11.3.0]

-- Control frame information -----------------------------------------------
c:0006 p:0065 s:0015 b:0015 l:000011 d:000014 BLOCK 
c:0005 p:0037 s:0012 b:0012 l:000011 d:000011 METHOD /Users/nathan/.rvm/gems/ruby-1.9.3-p194@ringleader/gems/celluloid-0.11.0/lib/celluloid/calls.rb:91
c:0004 p:0014 s:0007 b:0007 l:000ea0 d:000006 BLOCK  /Users/nathan/.rvm/gems/ruby-1.9.3-p194@ringleader/gems/celluloid-0.11.0/lib/celluloid/actor.rb:225
c:0003 p:0106 s:0005 b:0005 l:0014f0 d:000004 BLOCK  /Users/nathan/.rvm/gems/ruby-1.9.3-p194@ringleader/gems/celluloid-0.11.0/lib/celluloid/task.rb:45
c:0002 p:---- s:0003 b:0003 l:000002 d:000002 FINISH
c:0001 p:---- s:0001 b:-001 l:000000 d:000000 ------

-- Ruby level backtrace information ----------------------------------------
/Users/nathan/.rvm/gems/ruby-1.9.3-p194@ringleader/gems/celluloid-0.11.0/lib/celluloid/task.rb:45:in `block in initialize'
/Users/nathan/.rvm/gems/ruby-1.9.3-p194@ringleader/gems/celluloid-0.11.0/lib/celluloid/actor.rb:225:in `block in handle_message'
/Users/nathan/.rvm/gems/ruby-1.9.3-p194@ringleader/gems/celluloid-0.11.0/lib/celluloid/calls.rb:91:in `dispatch'
/Users/nathan/.rvm/gems/ruby-1.9.3-p194@ringleader/gems/celluloid-0.11.0/lib/celluloid/calls.rb:0:in `rescue in dispatch'

-- C level backtrace information -------------------------------------------

   See Crash Report log file under ~/Library/Logs/CrashReporter or
   /Library/Logs/CrashReporter, for the more detail of.

-- Other runtime information -----------------------------------------------

* Loaded script: fail.rb

* Loaded features:

    0 enumerator.so
    1 /Users/nathan/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/x86_64-darwin11.3.0/enc/encdb.bundle
    2 /Users/nathan/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/x86_64-darwin11.3.0/enc/trans/transdb.bundle
    3 /Users/nathan/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/site_ruby/1.9.1/rubygems/defaults.rb
    4 /Users/nathan/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/x86_64-darwin11.3.0/rbconfig.rb
    5 /Users/nathan/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/site_ruby/1.9.1/rubygems/deprecate.rb
    6 /Users/nathan/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/site_ruby/1.9.1/rubygems/exceptions.rb
    7 /Users/nathan/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb
    8 /Users/nathan/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/site_ruby/1.9.1/rubygems.rb
    9 /Users/nathan/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/site_ruby/1.9.1/ubygems.rb
   10 /Users/nathan/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/site_ruby/1.9.1/rubygems/version.rb
   11 /Users/nathan/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/site_ruby/1.9.1/rubygems/requirement.rb
   12 /Users/nathan/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/site_ruby/1.9.1/rubygems/platform.rb
   13 /Users/nathan/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb
   14 /Users/nathan/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/site_ruby/1.9.1/rubygems/path_support.rb
   15 /Users/nathan/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/site_ruby/1.9.1/rubygems/dependency.rb
   16 /Users/nathan/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/thread.rb
   17 /Users/nathan/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/monitor.rb
   18 /Users/nathan/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/logger.rb
   19 /Users/nathan/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/timeout.rb
   20 /Users/nathan/.rvm/gems/ruby-1.9.3-p194@ringleader/gems/celluloid-0.11.0/lib/celluloid/version.rb
   21 /Users/nathan/.rvm/gems/ruby-1.9.3-p194@ringleader/gems/celluloid-0.11.0/lib/celluloid/actor_proxy.rb
   22 /Users/nathan/.rvm/gems/ruby-1.9.3-p194@ringleader/gems/celluloid-0.11.0/lib/celluloid/calls.rb
   23 /Users/nathan/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/x86_64-darwin11.3.0/fiber.bundle
   24 /Users/nathan/.rvm/gems/ruby-1.9.3-p194@ringleader/gems/celluloid-0.11.0/lib/celluloid/fiber.rb
   25 /Users/nathan/.rvm/gems/ruby-1.9.3-p194@ringleader/gems/celluloid-0.11.0/lib/celluloid/core_ext.rb
   26 /Users/nathan/.rvm/gems/ruby-1.9.3-p194@ringleader/gems/celluloid-0.11.0/lib/celluloid/cpu_counter.rb
   27 /Users/nathan/.rvm/gems/ruby-1.9.3-p194@ringleader/gems/celluloid-0.11.0/lib/celluloid/events.rb
   28 /Users/nathan/.rvm/gems/ruby-1.9.3-p194@ringleader/gems/celluloid-0.11.0/lib/celluloid/fsm.rb
   29 /Users/nathan/.rvm/gems/ruby-1.9.3-p194@ringleader/gems/celluloid-0.11.0/lib/celluloid/internal_pool.rb
   30 /Users/nathan/.rvm/gems/ruby-1.9.3-p194@ringleader/gems/celluloid-0.11.0/lib/celluloid/links.rb
   31 /Users/nathan/.rvm/gems/ruby-1.9.3-p194@ringleader/gems/celluloid-0.11.0/lib/celluloid/logger.rb
   32 /Users/nathan/.rvm/gems/ruby-1.9.3-p194@ringleader/gems/celluloid-0.11.0/lib/celluloid/mailbox.rb
   33 /Users/nathan/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/set.rb
   34 /Users/nathan/.rvm/gems/ruby-1.9.3-p194@ringleader/gems/celluloid-0.11.0/lib/celluloid/receivers.rb
   35 /Users/nathan/.rvm/gems/ruby-1.9.3-p194@ringleader/gems/celluloid-0.11.0/lib/celluloid/registry.rb
   36 /Users/nathan/.rvm/gems/ruby-1.9.3-p194@ringleader/gems/celluloid-0.11.0/lib/celluloid/responses.rb
   37 /Users/nathan/.rvm/gems/ruby-1.9.3-p194@ringleader/gems/celluloid-0.11.0/lib/celluloid/signals.rb
   38 /Users/nathan/.rvm/gems/ruby-1.9.3-p194@ringleader/gems/celluloid-0.11.0/lib/celluloid/task.rb
   39 /Users/nathan/.rvm/gems/ruby-1.9.3-p194@ringleader/gems/celluloid-0.11.0/lib/celluloid/thread_handle.rb
   40 /Users/nathan/.rvm/gems/ruby-1.9.3-p194@ringleader/gems/celluloid-0.11.0/lib/celluloid/timers.rb
   41 /Users/nathan/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/x86_64-darwin11.3.0/digest.bundle
   42 /Users/nathan/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/digest.rb
   43 /Users/nathan/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/x86_64-darwin11.3.0/openssl.bundle
   44 /Users/nathan/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/openssl/bn.rb
   45 /Users/nathan/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/openssl/cipher.rb
   46 /Users/nathan/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/x86_64-darwin11.3.0/stringio.bundle
   47 /Users/nathan/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/openssl/config.rb
   48 /Users/nathan/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/openssl/digest.rb
   49 /Users/nathan/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/openssl/buffering.rb
   50 /Users/nathan/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/x86_64-darwin11.3.0/fcntl.bundle
   51 /Users/nathan/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/openssl/ssl-internal.rb
   52 /Users/nathan/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/openssl/x509-internal.rb
   53 /Users/nathan/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/openssl.rb
   54 /Users/nathan/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/securerandom.rb
   55 /Users/nathan/.rvm/gems/ruby-1.9.3-p194@ringleader/gems/celluloid-0.11.0/lib/celluloid/uuid.rb
   56 /Users/nathan/.rvm/gems/ruby-1.9.3-p194@ringleader/gems/celluloid-0.11.0/lib/celluloid/actor.rb
   57 /Users/nathan/.rvm/gems/ruby-1.9.3-p194@ringleader/gems/celluloid-0.11.0/lib/celluloid/future.rb
   58 /Users/nathan/.rvm/gems/ruby-1.9.3-p194@ringleader/gems/celluloid-0.11.0/lib/celluloid/pool_manager.rb
   59 /Users/nathan/.rvm/gems/ruby-1.9.3-p194@ringleader/gems/celluloid-0.11.0/lib/celluloid/supervision_group.rb
   60 /Users/nathan/.rvm/gems/ruby-1.9.3-p194@ringleader/gems/celluloid-0.11.0/lib/celluloid/supervisor.rb
   61 /Users/nathan/.rvm/gems/ruby-1.9.3-p194@ringleader/gems/celluloid-0.11.0/lib/celluloid.rb

[NOTE]
You may have encountered a bug in the Ruby interpreter or extension libraries.
Bug reports are welcome.
For details: http://www.ruby-lang.org/bugreport.html

Abort trap: 6
1.9.3@ringleader ~/Desktop/ringleader (master)*? ✘ 

fail.rb

require "celluloid"

class App
  include Celluloid
  include Celluloid::Logger

  def initialize(cmd)
    @cmd = cmd
  end

  def start
    @pid = Process.spawn @cmd
    @exit = WaitForExit.new @pid, self
  end
end

class WaitForExit
  include Celluloid

  def initialize(pid, app)
    @pid, @app = pid, app
    wait!
  end

  def wait
    Process.wait @pid
    @app.stopped!
  end
end

app = App.new "ls"
app.start
sleep

Root cause is using self instead of Actor.current on line 13. Never broken ruby quite like this before, though!

Helps to read the docs.