athena/activity/activity_factory.cc

   1 // Copyright 2014 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 #include "athena/activity/public/activity_factory.h"
   6
   7 #include "base/logging.h"
   8
   9 namespace athena {
  10
  11 namespace {
  12
  13 ActivityFactory* instance = nullptr;
  14 }
  15
  16 // static
  17 void ActivityFactory::RegisterActivityFactory(ActivityFactory* factory) {
  18   DCHECK(!instance);
  19   instance = factory;
  20 }
  21
  22 // static
  23 ActivityFactory* ActivityFactory::Get() {
  24   DCHECK(instance);
  25   return instance;
  26 }
  27
  28 // static
  29 void ActivityFactory::Shutdown() {
  30   DCHECK(instance);
  31   delete instance;
  32   instance = nullptr;
  33 }
  34
  35 }  // namespace athena