Improve IndexedDB's quota support

content/browser/in_process_webkit/indexed_db_dispatcher_host.h

 // Copyright (c) 2011 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_IN_PROCESS_WEBKIT_INDEXED_DB_DISPATCHER_HOST_H_
 #define CONTENT_BROWSER_IN_PROCESS_WEBKIT_INDEXED_DB_DISPATCHER_HOST_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/id_map.h"
@@ skipping 27 matching lines @@
   // Only call the constructor from the UI thread.
   IndexedDBDispatcherHost(int process_id, WebKitContext* webkit_context);
 
   // BrowserMessageFilter implementation.
   virtual void OnChannelClosing();
   virtual void OverrideThreadForMessage(const IPC::Message& message,
                                         BrowserThread::ID* thread);
   virtual bool OnMessageReceived(const IPC::Message& message,
                                  bool* message_was_ok);
 
+  void TransactionComplete(int32 transaction_id);
+
   // A shortcut for accessing our context.
   IndexedDBContext* Context() {
     return webkit_context_->indexed_db_context();
   }
 
   // The various IndexedDBCallbacks children call these methods to add the
   // results into the applicable map.  See below for more details.
   int32 Add(WebKit::WebIDBCursor* idb_cursor);
   int32 Add(WebKit::WebIDBDatabase* idb_database, const GURL& origin_url);
   int32 Add(WebKit::WebIDBIndex* idb_index);
   int32 Add(WebKit::WebIDBObjectStore* idb_object_store);
-  int32 Add(WebKit::WebIDBTransaction* idb_transaction);
+  int32 Add(WebKit::WebIDBTransaction* idb_transaction, const GURL& origin_url);
 
  private:
   virtual ~IndexedDBDispatcherHost();
 
   // Message processing. Most of the work is delegated to the dispatcher hosts
   // below.
   void OnIDBFactoryOpen(const IndexedDBHostMsg_FactoryOpen_Params& p);
 
   void OnIDBFactoryDeleteDatabase(
       const IndexedDBHostMsg_FactoryDeleteDatabase_Params& p);
 
   void ResetDispatcherHosts();
+  void CleanupTransactionMaps(int32 transaction_id);
 
   // Helper templates.
   template <class ReturnType>
   ReturnType* GetOrTerminateProcess(
     IDMap<ReturnType, IDMapOwnPointer>* map, int32 return_object_id);
 
   template <typename ReplyType, typename WebObjectType, typename Method>
   void SyncGetter(IDMap<WebObjectType, IDMapOwnPointer>* map, int32 object_id,
                   ReplyType* reply, Method method);
 
   template <typename ObjectType>
   void DestroyObject(IDMap<ObjectType, IDMapOwnPointer>* map, int32 object_id);
 
+  // Used in nested classes.
+  typedef std::map<int32, GURL> WebIDBObjectIDToURLMap;
+  typedef std::map<int32, int64> WebIDBTransactionIDToSizeMap;
+
   class DatabaseDispatcherHost {
    public:
     explicit DatabaseDispatcherHost(IndexedDBDispatcherHost* parent);
     ~DatabaseDispatcherHost();
 
     bool OnMessageReceived(const IPC::Message& message, bool *msg_is_ok);
     void Send(IPC::Message* message);
 
     void OnName(int32 idb_database_id, string16* name);
     void OnVersion(int32 idb_database_id, string16* version);
@@ skipping 14 matching lines @@
                        const std::vector<string16>& names,
                        int32 mode, int32 timeout,
                        int32* idb_transaction_id,
                        WebKit::WebExceptionCode* ec);
     void OnOpen(int32 idb_database_id, int32 response_id);
     void OnClose(int32 idb_database_id);
     void OnDestroyed(int32 idb_database_id);
 
     IndexedDBDispatcherHost* parent_;
     IDMap<WebKit::WebIDBDatabase, IDMapOwnPointer> map_;
-    typedef std::map<int32, GURL> WebIDBDatabaseIDToURLMap;
-    WebIDBDatabaseIDToURLMap url_map_;
+    WebIDBObjectIDToURLMap database_url_map_;
   };
 
   class IndexDispatcherHost {
    public:
     explicit IndexDispatcherHost(IndexedDBDispatcherHost* parent);
     ~IndexDispatcherHost();
 
     bool OnMessageReceived(const IPC::Message& message, bool *msg_is_ok);
     void Send(IPC::Message* message);
 
@@ skipping 116 matching lines @@
     void OnObjectStore(int32 transaction_id,
                        const string16& name,
                        int32* object_store_id,
                        WebKit::WebExceptionCode* ec);
     void OnDidCompleteTaskEvents(int transaction_id);
     void OnDestroyed(int32 idb_transaction_id);
 
     IndexedDBDispatcherHost* parent_;
     typedef IDMap<WebKit::WebIDBTransaction, IDMapOwnPointer> MapType;
     MapType map_;
+    WebIDBObjectIDToURLMap transaction_url_map_;
+    WebIDBTransactionIDToSizeMap transaction_size_map_;
   };
 
   // Data shared between renderer processes with the same profile.
   scoped_refptr<WebKitContext> webkit_context_;
 
   // Only access on WebKit thread.
   scoped_ptr<DatabaseDispatcherHost> database_dispatcher_host_;
   scoped_ptr<IndexDispatcherHost> index_dispatcher_host_;
   scoped_ptr<ObjectStoreDispatcherHost> object_store_dispatcher_host_;
   scoped_ptr<CursorDispatcherHost> cursor_dispatcher_host_;
   scoped_ptr<TransactionDispatcherHost> transaction_dispatcher_host_;
 
   // Used to dispatch messages to the correct view host.
   int process_id_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(IndexedDBDispatcherHost);
 };
 
 #endif  // CONTENT_BROWSER_IN_PROCESS_WEBKIT_INDEXED_DB_DISPATCHER_HOST_H_