# 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