chrome/browser/media/router/route_id_manager.h

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_MEDIA_ROUTER_ROUTE_ID_MANAGER_H_
   6 #define CHROME_BROWSER_MEDIA_ROUTER_ROUTE_ID_MANAGER_H_
   7
   8 #include <string>
   9
  10 #include "base/basictypes.h"
  11 #include "base/gtest_prod_util.h"
  12 #include "base/memory/singleton.h"
  13 #include "base/threading/non_thread_safe.h"
  14
  15 namespace media_router {
  16
  17 class MediaRoute;
  18
  19 // Shared singleton which coordinates the assignment of unique IDs to
  20 // MediaRoute objects.
  21 // Class is not threadsafe; IDs should be created on the same thread.
  22 class RouteIDManager : public base::NonThreadSafe {
  23  public:
  24   static RouteIDManager* GetInstance();
  25
  26   std::string ForLocalRoute();
  27
  28  private:
  29   FRIEND_TEST_ALL_PREFIXES(RouteIDManagerTest, ForLocalRoute);
  30   friend struct DefaultSingletonTraits<RouteIDManager>;
  31
  32   RouteIDManager();
  33
  34   // Monotonically increasing ID number.
  35   uint64 next_local_id_;
  36
  37   DISALLOW_COPY_AND_ASSIGN(RouteIDManager);
  38 };
  39
  40 }  // namespace media_router
  41
  42 #endif  // CHROME_BROWSER_MEDIA_ROUTER_ROUTE_ID_MANAGER_H_