Method: ChildProcess::JRuby.posix_fileno_for

Defined in:
lib/childprocess/jruby.rb

.posix_fileno_for(obj) ⇒ Object 



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# File 'lib/childprocess/jruby.rb', line 18

def self.posix_fileno_for(obj)
  channel = ::JRuby.reference(obj).channel
  begin
    channel.getFDVal
  rescue NoMethodError
    fileno = channel.fd
    if fileno.kind_of?(Java::JavaIo::FileDescriptor)
      fileno = fileno.fd
    end

    fileno == -1 ? obj.fileno : fileno
  end
rescue
  # fall back
  obj.fileno
end