# File lib/eventmachine.rb, line 1291 def self.watch_process(pid, handler=nil, *args) pid = pid.to_i klass = klass_from_handler(ProcessWatch, handler, *args) s = EM::watch_pid(pid) c = klass.new s, *args # we have to set the path like this because of how Connection.new works c.instance_variable_set("@pid", pid) @conns[s] = c block_given? and yield c c end