Class: Guard::Process

Inherits:
Guard
  • Object
show all
Defined in:
lib/guard/process.rb

Instance Method Summary collapse

Constructor Details

#initialize(watchers = [], options = {}) ⇒ Process

Returns a new instance of Process.



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# File 'lib/guard/process.rb', line 6

def initialize(watchers = [], options = {})
  @process = nil
  @pid = nil
  @command = options.fetch(:command).split
  @env = options[:env]
  @name = options[:name]
  @stop_signal = options[:stop_signal] || "TERM"
  super
end

Instance Method Details

#process_running? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/guard/process.rb', line 16

def process_running?
  begin
    @pid ? ::Process.kill(0, @pid) : false
  rescue Errno::ESRCH => e
    false
  end
end

#reload ⇒ Object 



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# File 'lib/guard/process.rb', line 43

def reload
  stop
  start
end

#run_all ⇒ Object 



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# File 'lib/guard/process.rb', line 48

def run_all
  true
end

#run_on_change(paths) ⇒ Object 



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# File 'lib/guard/process.rb', line 52

def run_on_change(paths)
  reload
end

#start ⇒ Object 



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# File 'lib/guard/process.rb', line 24

def start
  UI.info("Starting process #{@name}")
  @command.unshift(@env) if @env
  @process = IO.popen(@command)
  UI.info("Started process #{@name}")
  @pid = @process.pid
end

#stop ⇒ Object 



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# File 'lib/guard/process.rb', line 32

def stop
  if @process
    UI.info("Stopping process #{@name}")
    ::Process.kill(@stop_signal, @process.pid)
    ::Process.waitpid(@pid) rescue Errno::ESRCH
    @process.close
    @pid = nil
    UI.info("Stopped process #{@name}")
  end
end