From fcbf63e62c627deae76c1b8cb8c0876c536ed811 Mon Sep 17 00:00:00 2001 From: Jari Vetoniemi Date: Mon, 16 Mar 2020 18:49:26 +0900 Subject: Fresh start --- jni/ruby/lib/drb/extservm.rb | 93 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 93 insertions(+) create mode 100644 jni/ruby/lib/drb/extservm.rb (limited to 'jni/ruby/lib/drb/extservm.rb') diff --git a/jni/ruby/lib/drb/extservm.rb b/jni/ruby/lib/drb/extservm.rb new file mode 100644 index 0000000..8a7fc31 --- /dev/null +++ b/jni/ruby/lib/drb/extservm.rb @@ -0,0 +1,93 @@ +=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 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 + end +end -- cgit v1.2.3