Class: PerfectQueue::SignalThread

Inherits:
Thread
  • Object
show all
Defined in:
lib/perfectqueue/signal_thread.rb

Instance Method Summary collapse

Constructor Details

#initialize(&block) ⇒ SignalThread

Returns a new instance of SignalThread.



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# File 'lib/perfectqueue/signal_thread.rb', line 21

def initialize(&block)
  require 'thread'

  @handlers = {}

  @mutex = Mutex.new
  @cond = ConditionVariable.new
  @queue = []
  @finished = false

  block.call(self) if block

  super(&method(:main))
end

Instance Method Details

#handlers ⇒ Object 



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# File 'lib/perfectqueue/signal_thread.rb', line 56

def handlers
  @handlers.dup
end

#stop ⇒ Object 



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# File 'lib/perfectqueue/signal_thread.rb', line 60

def stop
  @mutex.synchronize do
    @finished = true
    @cond.broadcast
  end
  self
end

#trap(sig, command = nil, &block) ⇒ Object 



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# File 'lib/perfectqueue/signal_thread.rb', line 36

def trap(sig, command=nil, &block)
  # normalize signal names
  sig = sig.to_s.upcase
  if sig[0,3] == "SIG"
    sig = sig[3..-1]
  end
  sig = sig.to_sym

  old = @handlers[sig]
  if block
    Kernel.trap(sig) { signal_handler_main(sig) }
    @handlers[sig] = block
  else
    Kernel.trap(sig, command)
    @handlers.delete(sig)
  end

  old
end