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?? drb.rb(52.2 KB)
?? eq.rb(253 B)
?? extserv.rb(1.06 KB)
?? extservm.rb(1.6 KB)
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Editing: extservm.rb

=begin
 external service manager
 	Copyright (c) 2000 Masatoshi SEKI 
=end

require 'drb/drb'
require 'thread'
require 'monitor'

module DRb
  class ExtServManager
    include DRbUndumped
    include MonitorMixin

@@command = {}

def self.command
      @@command
    end

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

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

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

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

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

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 RUBY_PLATFORM =~ /mswin32/ && /NT/ =~ ENV["OS"]
        system(%Q'cmd /c start "ruby" /b #{command} #{uri} #{name}')
      else
	system("#{command} #{uri} #{name} &")
      end
    end
  end
end

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Editing: extservm.rb

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