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# File 'lib/eventmachine/udev.rb', line 25
def self.new (handler)
context = RubDev::Context.new
monitor = RubDev::Monitor.from_netlink(context, 'udev')
mod = Module.new {
include handler if handler
define_method(:device_added) {|dev|
puts "added #{dev.devnode}"
} unless instance_methods.include?(:device_added)
define_method(:device_removed) {|dev|
puts "removed #{dev.devnode}"
} unless instance_methods.include?(:device_removed)
define_method(:notify_readable) {
dev = monitor.receive_device
self.send((dev.action == 'add' ? :device_added : :device_removed), dev)
} unless instance_methods.include?(:notify_readable)
}
EM.watch(monitor.to_io, mod).tap {|c|
[[:@context, context], [:@monitor, monitor]].each {|args|
c.instance_variable_set(*args)
}
c.notify_readable = true
monitor.enable_receiving
}
end
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