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Diffstat (limited to 'trunk/lib/drb/extservm.rb')
-rw-r--r-- | trunk/lib/drb/extservm.rb | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/trunk/lib/drb/extservm.rb b/trunk/lib/drb/extservm.rb new file mode 100644 index 0000000000..be40aea9f5 --- /dev/null +++ b/trunk/lib/drb/extservm.rb @@ -0,0 +1,89 @@ +=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 |