Method: Daemonize.daemonize

Defined in:
lib/daemons/daemonize.rb

.daemonize(logfile_name = nil, app_name = nil) ⇒ Object

Transform the current process into a daemon



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# File 'lib/daemons/daemonize.rb', line 92

def daemonize(logfile_name = nil, app_name = nil)
  # Fork and exit from the parent
  safefork && exit

  # Detach from the controlling terminal
  unless sess_id = Process.setsid
    fail Daemons.RuntimeException.new('cannot detach from controlling terminal')
  end

  # Prevent the possibility of acquiring a controlling terminal
  trap 'SIGHUP', 'IGNORE'
  exit if safefork

  $0 = app_name if app_name

  # Release old working directory
  Dir.chdir '/'

  close_io

  redirect_io(logfile_name)

  # Split rand streams between spawning and daemonized process
  srand

  sess_id
end