Class: Resqued::Daemon

Inherits:
Object
  • Object
show all
Defined in:
lib/resqued/daemon.rb

Instance Method Summary collapse

Constructor Details

#initialize(master) ⇒ Daemon

Returns a new instance of Daemon.



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# File 'lib/resqued/daemon.rb', line 3

def initialize(master)
  @master = master
end

Instance Method Details

#run ⇒ Object

Public: daemonize and run the master process.



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# File 'lib/resqued/daemon.rb', line 8

def run
  rd, wr = IO.pipe
  if fork
    # grandparent
    wr.close
    begin
      master_pid = rd.readpartial(16).to_i
      puts "Started master: #{master_pid}" if ENV["DEBUG"]
      exit
    rescue EOFError
      puts "Master process failed to start!"
      exit! 1
    end
  elsif fork
    # parent
    Process.setsid
    exit
  else
    # master
    STDIN.reopen "/dev/null"
    STDOUT.reopen "/dev/null", "a"
    STDERR.reopen "/dev/null", "a"
    rd.close
    @master.run(wr)
  end
end