| # Licensed to the Apache Software Foundation (ASF) under one |
| # or more contributor license agreements. See the NOTICE file |
| # distributed with this work for additional information |
| # regarding copyright ownership. The ASF licenses this file |
| # to you under the Apache License, Version 2.0 (the |
| # "License"); you may not use this file except in compliance |
| # with the License. You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| # |
| # File passed to org.jruby.Main by bin/hbase. Pollutes jirb with hbase imports |
| # and hbase commands and then loads jirb. Outputs a banner that tells user |
| # where to find help, shell version, and loads up a custom hirb. |
| |
| require 'thread' |
| |
| class ThreadPool |
| def initialize(poolsize) |
| @queue = Queue.new |
| @poolsize = poolsize |
| @pool = Array.new(@poolsize) do |i| |
| Thread.new do |
| Thread.current[:id] = i |
| catch(:close) do |
| loop do |
| job, args = @queue.pop |
| job.call(*args) |
| end |
| end |
| end |
| end |
| end |
| |
| def launch(*args, &block) |
| @queue << [block, args] |
| end |
| |
| def stop |
| @poolsize.times do |
| launch { throw :close } |
| end |
| @pool.map(&:join) |
| end |
| end |