Dispatch IndexedDB IPC messages to worker threads

content/browser/in_process_webkit/indexed_db_callbacks.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_CALLBACKS_H_
 #define CONTENT_BROWSER_IN_PROCESS_WEBKIT_INDEXED_DB_CALLBACKS_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
@@ skipping 15 matching lines @@
   typedef IndexedDBMsg_CallbacksSuccessIDBDatabase MsgType;
 };
 template <> struct WebIDBToMsgHelper<WebKit::WebIDBTransaction> {
   typedef IndexedDBMsg_CallbacksSuccessIDBTransaction MsgType;
 };
 
 // The code the following two classes share.
 class IndexedDBCallbacksBase : public WebKit::WebIDBCallbacks {
  public:
   IndexedDBCallbacksBase(IndexedDBDispatcherHost* dispatcher_host,
+                         int32 thread_id,
                          int32 response_id);
 
   virtual ~IndexedDBCallbacksBase();
 
   virtual void onError(const WebKit::WebIDBDatabaseError& error);
   virtual void onBlocked();
 
  protected:
   IndexedDBDispatcherHost* dispatcher_host() const {
     return dispatcher_host_.get();
   }
+  int32 thread_id() const { return thread_id_; }
   int32 response_id() const { return response_id_; }
 
  private:
   scoped_refptr<IndexedDBDispatcherHost> dispatcher_host_;
   int32 response_id_;
+  int32 thread_id_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(IndexedDBCallbacksBase);
 };
 
 // A WebIDBCallbacks implementation that returns an object of WebObjectType.
 template <class WebObjectType>
 class IndexedDBCallbacks : public IndexedDBCallbacksBase {
  public:
   IndexedDBCallbacks(
-      IndexedDBDispatcherHost* dispatcher_host, int32 response_id,
+      IndexedDBDispatcherHost* dispatcher_host,
+      int32 thread_id,
+      int32 response_id,
       const GURL& origin_url)
-      : IndexedDBCallbacksBase(dispatcher_host, response_id),
-        origin_url_(origin_url) {
+      : IndexedDBCallbacksBase(dispatcher_host, thread_id, response_id),
+    origin_url_(origin_url) {
   }
 
   virtual void onSuccess(WebObjectType* idb_object) {
-    int32 object_id = dispatcher_host()->Add(idb_object, origin_url_);
+    int32 object_id = dispatcher_host()->Add(idb_object, thread_id(),
+                                             origin_url_);
     dispatcher_host()->Send(
-        new typename WebIDBToMsgHelper<WebObjectType>::MsgType(response_id(),
+        new typename WebIDBToMsgHelper<WebObjectType>::MsgType(thread_id(),
+                                                               response_id(),
                                                                object_id));
   }
 
  private:
   GURL origin_url_;
   DISALLOW_IMPLICIT_CONSTRUCTORS(IndexedDBCallbacks);
 };
 
 // WebIDBCursor uses onSuccess(WebIDBCursor*) when a cursor has been opened,
 // onSuccessWithContinuation() when a continue() call has succeeded, or
 // onSuccess() without params to indicate it does not contain any data, i.e.,
 // there is no key within the key range, or it has reached the end.
 template <>
 class IndexedDBCallbacks<WebKit::WebIDBCursor>
     : public IndexedDBCallbacksBase {
  public:
   IndexedDBCallbacks(
-      IndexedDBDispatcherHost* dispatcher_host, int32 response_id,
+      IndexedDBDispatcherHost* dispatcher_host,
+      int32 thread_id,
+      int32 response_id,
       int32 cursor_id)
-      : IndexedDBCallbacksBase(dispatcher_host, response_id),
+      : IndexedDBCallbacksBase(dispatcher_host, thread_id, response_id),
         cursor_id_(cursor_id) { }
 
   virtual void onSuccess(WebKit::WebIDBCursor* idb_object);
   virtual void onSuccess(const WebKit::WebSerializedScriptValue& value);
   virtual void onSuccessWithContinuation();
   virtual void onSuccessWithPrefetch(
       const WebKit::WebVector<WebKit::WebIDBKey>& keys,
       const WebKit::WebVector<WebKit::WebIDBKey>& primaryKeys,
       const WebKit::WebVector<WebKit::WebSerializedScriptValue>& values);
 
  private:
   // The id of the cursor this callback concerns, or -1 if the cursor
   // does not exist yet.
   int32 cursor_id_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(IndexedDBCallbacks);
 };
 
 // WebIDBKey is implemented in WebKit as opposed to being an interface Chromium
 // implements.  Thus we pass a const ___& version and thus we need this
 // specialization.
 template <>
 class IndexedDBCallbacks<WebKit::WebIDBKey>
     : public IndexedDBCallbacksBase {
  public:
-  IndexedDBCallbacks(
-      IndexedDBDispatcherHost* dispatcher_host, int32 response_id)
-      : IndexedDBCallbacksBase(dispatcher_host, response_id) { }
+  IndexedDBCallbacks(IndexedDBDispatcherHost* dispatcher_host,
+                     int32 thread_id,
+                     int32 response_id)
+      : IndexedDBCallbacksBase(dispatcher_host, thread_id, response_id) { }
 
   virtual void onSuccess(const WebKit::WebIDBKey& value);
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(IndexedDBCallbacks);
 };
 
 // WebDOMStringList is implemented in WebKit as opposed to being an
 // interface Chromium implements.  Thus we pass a const ___& version and thus
 // we need this specialization.
 template <>
 class IndexedDBCallbacks<WebKit::WebDOMStringList>
     : public IndexedDBCallbacksBase {
  public:
   IndexedDBCallbacks(
-      IndexedDBDispatcherHost* dispatcher_host, int32 response_id)
-      : IndexedDBCallbacksBase(dispatcher_host, response_id) { }
+      IndexedDBDispatcherHost* dispatcher_host,
+      int32 thread_id,
+      int32 response_id)
+      : IndexedDBCallbacksBase(dispatcher_host, thread_id, response_id) { }
 
   virtual void onSuccess(const WebKit::WebDOMStringList& value);
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(IndexedDBCallbacks);
 };
 
 // WebSerializedScriptValue is implemented in WebKit as opposed to being an
 // interface Chromium implements.  Thus we pass a const ___& version and thus
 // we need this specialization.
 template <>
 class IndexedDBCallbacks<WebKit::WebSerializedScriptValue>
     : public IndexedDBCallbacksBase {
  public:
-  IndexedDBCallbacks(
-      IndexedDBDispatcherHost* dispatcher_host, int32 response_id)
-      : IndexedDBCallbacksBase(dispatcher_host, response_id) { }
+  IndexedDBCallbacks(IndexedDBDispatcherHost* dispatcher_host,
+                     int32 thread_id,
+                     int32 response_id)
+      : IndexedDBCallbacksBase(dispatcher_host, thread_id, response_id) { }
 
   virtual void onSuccess(const WebKit::WebSerializedScriptValue& value);
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(IndexedDBCallbacks);
 };
 
 #endif  // CONTENT_BROWSER_IN_PROCESS_WEBKIT_INDEXED_DB_CALLBACKS_H_