ceph/src/boost/libs/beast/example/websocket/server/chat-multi/shared_state.hpp

   1 //
   2 // Copyright (c) 2016-2019 Vinnie Falco (vinnie dot falco at gmail dot com)
   3 //
   4 // Distributed under the Boost Software License, Version 1.0. (See accompanying
   5 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   6 //
   7 // Official repository: https://github.com/vinniefalco/CppCon2018
   8 //
   9
  10 #ifndef BOOST_BEAST_EXAMPLE_WEBSOCKET_CHAT_MULTI_SHARED_STATE_HPP
  11 #define BOOST_BEAST_EXAMPLE_WEBSOCKET_CHAT_MULTI_SHARED_STATE_HPP
  12
  13 #include <boost/smart_ptr.hpp>
  14 #include <memory>
  15 #include <mutex>
  16 #include <string>
  17 #include <unordered_set>
  18
  19 // Forward declaration
  20 class websocket_session;
  21
  22 // Represents the shared server state
  23 class shared_state
  24 {
  25     std::string const doc_root_;
  26
  27     // This mutex synchronizes all access to sessions_
  28     std::mutex mutex_;
  29
  30     // Keep a list of all the connected clients
  31     std::unordered_set<websocket_session*> sessions_;
  32
  33 public:
  34     explicit
  35     shared_state(std::string doc_root);
  36
  37     std::string const&
  38     doc_root() const noexcept
  39     {
  40         return doc_root_;
  41     }
  42
  43     void join  (websocket_session* session);
  44     void leave (websocket_session* session);
  45     void send  (std::string message);
  46 };
  47
  48 #endif