ceph/src/boost/libs/asio/example/cpp03/http/server2/io_service_pool.hpp

   1 //
   2 // io_service_pool.hpp
   3 // ~~~~~~~~~~~~~~~~~~~
   4 //
   5 // Copyright (c) 2003-2016 Christopher M. Kohlhoff (chris at kohlhoff dot com)
   6 //
   7 // Distributed under the Boost Software License, Version 1.0. (See accompanying
   8 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   9 //
  10
  11 #ifndef HTTP_SERVER2_IO_SERVICE_POOL_HPP
  12 #define HTTP_SERVER2_IO_SERVICE_POOL_HPP
  13
  14 #include <boost/asio.hpp>
  15 #include <vector>
  16 #include <boost/noncopyable.hpp>
  17 #include <boost/shared_ptr.hpp>
  18
  19 namespace http {
  20 namespace server2 {
  21
  22 /// A pool of io_service objects.
  23 class io_service_pool
  24   : private boost::noncopyable
  25 {
  26 public:
  27   /// Construct the io_service pool.
  28   explicit io_service_pool(std::size_t pool_size);
  29
  30   /// Run all io_service objects in the pool.
  31   void run();
  32
  33   /// Stop all io_service objects in the pool.
  34   void stop();
  35
  36   /// Get an io_service to use.
  37   boost::asio::io_service& get_io_service();
  38
  39 private:
  40   typedef boost::shared_ptr<boost::asio::io_service> io_service_ptr;
  41   typedef boost::shared_ptr<boost::asio::io_service::work> work_ptr;
  42
  43   /// The pool of io_services.
  44   std::vector<io_service_ptr> io_services_;
  45
  46   /// The work that keeps the io_services running.
  47   std::vector<work_ptr> work_;
  48
  49   /// The next io_service to use for a connection.
  50   std::size_t next_io_service_;
  51 };
  52
  53 } // namespace server2
  54 } // namespace http
  55
  56 #endif // HTTP_SERVER2_IO_SERVICE_POOL_HPP