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Class: DRb::ExtServManager

Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Instance Chain:
self, MonitorMixin, DRbUndumped
Inherits: Object
Defined in: lib/drb/extservm.rb

Class Attribute Summary

Class Method Summary

Instance Attribute Summary

Instance Method Summary

Constructor Details

.newExtServManager

[ GitHub ]

  
# File 'lib/drb/extservm.rb', line 26

def initialize
  super()
  @cond = new_cond
  @servers = {}
  @waiting = []
  @queue = Thread::Queue.new
  @thread = invoke_thread
  @uri = nil
end

Class Attribute Details

.command (rw)

[ GitHub ]

  
# File 'lib/drb/extservm.rb', line 18

def self.command
  @@command
end

.command=(cmd) (rw)

[ GitHub ]

  
# File 'lib/drb/extservm.rb', line 22

def self.command=(cmd)
  @@command = cmd
end

Instance Attribute Details

#uri (rw)

[ GitHub ]

  
# File 'lib/drb/extservm.rb', line 35

attr_accessor :uri

Instance Method Details

#invoke_service(name) (private)

[ GitHub ]

  
# File 'lib/drb/extservm.rb', line 72

def invoke_service(name)
  @queue.push(name)
end

#invoke_service_command(name, command) (private)

[ GitHub ]

  
# File 'lib/drb/extservm.rb', line 76

def invoke_service_command(name, command)
  raise "invalid command. name: #{name}" unless command
  synchronize do
    return if @servers.include?(name)
    @servers[name] = false
  end
  uri = @uri || DRb.uri
  if command.respond_to? :to_ary
    command = command.to_ary + [uri, name]
    pid = spawn(*command)
  else
    pid = spawn("#{command} #{uri} #{name}")
  end
  th = Process.detach(pid)
  th[:drb_service] = name
  th
end

#invoke_thread (private)

[ GitHub ]

  
# File 'lib/drb/extservm.rb', line 63

def invoke_thread
  Thread.new do
    while true
      name = @queue.pop
      invoke_service_command(name, @@command[name])
    end
  end
end

#regist(name, ro)

[ GitHub ]

  
# File 'lib/drb/extservm.rb', line 48

def regist(name, ro)
  synchronize do
    @servers[name] = ro
    @cond.signal
  end
  self
end

#service(name)

[ GitHub ]

  
# File 'lib/drb/extservm.rb', line 37

def service(name)
  synchronize do
    while true
      server = @servers[name]
      return server if server && server.alive? # server may be `false'
      invoke_service(name)
      @cond.wait
    end
  end
end

#unregist(name)

[ GitHub ]

  
# File 'lib/drb/extservm.rb', line 56

def unregist(name)
  synchronize do
    @servers.delete(name)
  end
end