Blob support for IDB [Chromium]

content/browser/indexed_db/indexed_db_factory.h

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_FACTORY_H_
 #define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_FACTORY_H_
 
 #include <map>
 #include <set>
 
 #include "base/basictypes.h"
 #include "base/files/file_path.h"
 #include "base/memory/ref_counted.h"
 #include "base/strings/string16.h"
 #include "content/browser/indexed_db/indexed_db_callbacks.h"
 #include "content/browser/indexed_db/indexed_db_database.h"
 #include "content/browser/indexed_db/indexed_db_database_callbacks.h"
 #include "content/common/content_export.h"
 #include "url/gurl.h"
 
+namespace base {
+class TaskRunner;
+}
+
+namespace net {
+class URLRequestContext;
+}
+
 namespace content {
 
 class IndexedDBBackingStore;
 class IndexedDBContextImpl;
 
 class CONTENT_EXPORT IndexedDBFactory
     : NON_EXPORTED_BASE(public base::RefCountedThreadSafe<IndexedDBFactory>) {
  public:
   explicit IndexedDBFactory(IndexedDBContextImpl* context);
 
-  // Notifications from weak pointers.
   void ReleaseDatabase(const IndexedDBDatabase::Identifier& identifier,
                        const GURL& origin_url,
                        bool forcedClose);
 
   void GetDatabaseNames(scoped_refptr<IndexedDBCallbacks> callbacks,
                         const GURL& origin_url,
-                        const base::FilePath& data_directory);
+                        const base::FilePath& data_directory,
+                        base::TaskRunner* task_runner);
   void Open(const string16& name,
             int64 version,
+            net::URLRequestContext* request_context,
             int64 transaction_id,
             scoped_refptr<IndexedDBCallbacks> callbacks,
             scoped_refptr<IndexedDBDatabaseCallbacks> database_callbacks,
             const GURL& origin_url,
-            const base::FilePath& data_directory);
+            const base::FilePath& data_directory,
+            int child_process_id,
+            base::TaskRunner* task_runner);
 
   void DeleteDatabase(const string16& name,
+                      net::URLRequestContext* request_context,
                       scoped_refptr<IndexedDBCallbacks> callbacks,
                       const GURL& origin_url,
-                      const base::FilePath& data_directory);
+                      const base::FilePath& data_directory,
+                      base::TaskRunner* task_runner);
 
   void HandleBackingStoreFailure(const GURL& origin_url);
 
   // Iterates over all databases; for diagnostics only.
   std::vector<IndexedDBDatabase*> GetOpenDatabasesForOrigin(
       const GURL& origin_url) const;
 
   bool IsBackingStoreOpenForTesting(const GURL& origin_url) const;
 
   // Called by the IndexedDBContext destructor so the factory can do cleanup.
   void ContextDestroyed();
 
+  // Called by the IndexedDBActiveBlobRegistry.
+  void ReportOutstandingBlobs(const GURL& origin_url, bool blobs_outstanding);
+
  protected:
   friend class base::RefCountedThreadSafe<IndexedDBFactory>;
 
   virtual ~IndexedDBFactory();
 
   virtual scoped_refptr<IndexedDBBackingStore> OpenBackingStore(
       const GURL& origin_url,
       const base::FilePath& data_directory,
+      net::URLRequestContext* request_context,
       blink::WebIDBDataLoss* data_loss,
       std::string* data_loss_reason,
-      bool* disk_full);
+      bool* disk_full,
+      base::TaskRunner* task_runner);
+
+  virtual scoped_refptr<IndexedDBBackingStore> OpenBackingStoreHelper(
+      const GURL& origin_url,
+      const base::FilePath& data_directory,
+      net::URLRequestContext* request_context,
+      blink::WebIDBDataLoss* data_loss,
+      std::string* data_loss_message,
+      bool* disk_full,
+      base::TaskRunner* task_runner,
+      bool first_time);
 
   void ReleaseBackingStore(const GURL& origin_url, bool immediate);
   void CloseBackingStore(const GURL& origin_url);
+  IndexedDBContextImpl* context() const { return context_; }
 
  private:
   // Called internally after a database is closed, with some delay. If this
   // factory has the last reference, it will be released.
   void MaybeCloseBackingStore(const GURL& origin_url);
   bool HasLastBackingStoreReference(const GURL& origin_url) const;
 
   IndexedDBContextImpl* context_;
 
   typedef std::map<IndexedDBDatabase::Identifier,
                    scoped_refptr<IndexedDBDatabase> > IndexedDBDatabaseMap;
   IndexedDBDatabaseMap database_map_;
 
   typedef std::map<GURL, scoped_refptr<IndexedDBBackingStore> >
       IndexedDBBackingStoreMap;
   IndexedDBBackingStoreMap backing_store_map_;
 
   std::set<scoped_refptr<IndexedDBBackingStore> > session_only_backing_stores_;
+  IndexedDBBackingStoreMap backing_stores_with_active_blobs_;
+  std::set<GURL> backends_opened_since_boot_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_FACTORY_H_