Module: Resque::Scheduler::SignalHandling

Included in:
Resque::Scheduler
Defined in:
lib/resque/scheduler/signal_handling.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#signal_queueObject


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# File 'lib/resque/scheduler/signal_handling.rb', line 8

def signal_queue
  @signal_queue ||= []
end

Instance Method Details

#handle_signalsObject


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# File 'lib/resque/scheduler/signal_handling.rb', line 26

def handle_signals
  loop do
    sig = signal_queue.shift
    break unless sig
    log! "Got #{sig} signal"
    case sig
    when 'INT', 'TERM', 'QUIT' then shutdown
    when 'USR1' then print_schedule
    when 'USR2' then reload_schedule!
    end
  end
end

#register_signal_handlersObject

For all signals, set the shutdown flag and wait for current poll/enqueing to finish (should be almost instant). In the case of sleeping, exit immediately.


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# File 'lib/resque/scheduler/signal_handling.rb', line 15

def register_signal_handlers
  %w(INT TERM USR1 USR2 QUIT).each do |sig|
    trap(sig) do
      signal_queue << sig
      # break sleep in the primary scheduler thread, alowing
      # the signal queue to get processed as soon as possible.
      @th.wakeup if @th && @th.alive?
    end
  end
end