content/browser/background_sync/background_sync_context_impl.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 CONTENT_BROWSER_BACKGROUND_SYNC_BACKGROUND_SYNC_CONTEXT_IMPL_H_
   6 #define CONTENT_BROWSER_BACKGROUND_SYNC_BACKGROUND_SYNC_CONTEXT_IMPL_H_
   7
   8 #include <set>
   9
  10 #include "base/memory/ref_counted.h"
  11 #include "base/memory/scoped_ptr.h"
  12 #include "content/common/background_sync_service.mojom.h"
  13 #include "content/common/content_export.h"
  14 #include "content/public/browser/background_sync_context.h"
  15
  16 namespace content {
  17
  18 class BackgroundSyncManager;
  19 class BackgroundSyncServiceImpl;
  20 class ServiceWorkerContextWrapper;
  21
  22 // Implements the BackgroundSyncContext. One instance of this exists per
  23 // StoragePartition, and services multiple child processes/origins. Most logic
  24 // is delegated to the owned BackgroundSyncManager instance, which is only
  25 // accessed on the IO thread.
  26 class CONTENT_EXPORT BackgroundSyncContextImpl : public BackgroundSyncContext {
  27  public:
  28   BackgroundSyncContextImpl();
  29
  30   // Init and Shutdown are for use on the UI thread when the
  31   // StoragePartition is being setup and torn down.
  32   void Init(const scoped_refptr<ServiceWorkerContextWrapper>& context);
  33
  34   // Shutdown must be called before deleting this. Call on the UI thread.
  35   void Shutdown();
  36
  37   // Create a BackgroundSyncServiceImpl that is owned by this. Call on the UI
  38   // thread.
  39   void CreateService(mojo::InterfaceRequest<BackgroundSyncService> request);
  40
  41   // Called by BackgroundSyncServiceImpl objects so that they can
  42   // be deleted. Call on the IO thread.
  43   void ServiceHadConnectionError(BackgroundSyncServiceImpl* service);
  44
  45   // Call on the IO thread.
  46   BackgroundSyncManager* background_sync_manager() const override;
  47
  48  protected:
  49   ~BackgroundSyncContextImpl() override;
  50
  51  private:
  52   friend class BackgroundSyncServiceImplTest;
  53
  54   void CreateBackgroundSyncManager(
  55       const scoped_refptr<ServiceWorkerContextWrapper>& context);
  56
  57   void CreateServiceOnIOThread(
  58       mojo::InterfaceRequest<BackgroundSyncService> request);
  59
  60   void ShutdownOnIO();
  61
  62   // Only accessed on the IO thread.
  63   scoped_ptr<BackgroundSyncManager> background_sync_manager_;
  64
  65   // The services are owned by this. They're either deleted
  66   // during ShutdownOnIO or when the channel is closed via
  67   // ServiceHadConnectionError. Only accessed on the IO thread.
  68   std::set<BackgroundSyncServiceImpl*> services_;
  69
  70   DISALLOW_COPY_AND_ASSIGN(BackgroundSyncContextImpl);
  71 };
  72
  73 }  // namespace content
  74
  75 #endif  // CONTENT_BROWSER_BACKGROUND_SYNC_BACKGROUND_SYNC_CONTEXT_IMPL_H_