Added lifecycle management and sharing support for SharedWorkers. SharedWorkers

chrome/renderer/websharedworker_proxy.cc

 // Copyright (c) 2009 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.
 
 #include "chrome/renderer/websharedworker_proxy.h"
 
 #include "chrome/common/render_messages.h"
 #include "chrome/common/webmessageportchannel_impl.h"
 #include "chrome/common/worker_messages.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebURL.h"
 
 WebSharedWorkerProxy::WebSharedWorkerProxy(ChildThread* child_thread,
                                            int route_id,
                                            int render_view_route_id)
     : WebWorkerBase(child_thread, route_id, render_view_route_id),
-      m_connectListener(NULL) {
+      connect_listener_(NULL) {
 }
 
 bool WebSharedWorkerProxy::isStarted() {
   return IsStarted();
 }
 
 void WebSharedWorkerProxy::startWorkerContext(
     const WebKit::WebURL& script_url,
     const WebKit::WebString& name,
     const WebKit::WebString& user_agent,
     const WebKit::WebString& source_code) {
+  DCHECK(!isStarted());
   CreateWorkerContext(script_url, true, name, user_agent, source_code);
 }
 
 void WebSharedWorkerProxy::terminateWorkerContext() {
   // This API should only be invoked from worker context.
   NOTREACHED();
 }
 
 void WebSharedWorkerProxy::clientDestroyed() {
   // This API should only be invoked from worker context.
   NOTREACHED();
 }
 
 void WebSharedWorkerProxy::connect(WebKit::WebMessagePortChannel* channel,
                                    ConnectListener* listener) {
   WebMessagePortChannelImpl* webchannel =
         static_cast<WebMessagePortChannelImpl*>(channel);
 
   int message_port_id = webchannel->message_port_id();
   DCHECK(message_port_id != MSG_ROUTING_NONE);
   webchannel->QueueMessages();
 
   Send(new WorkerMsg_Connect(route_id_, message_port_id, MSG_ROUTING_NONE));
   if (HasQueuedMessages()) {
-    m_connectListener = listener;
+    connect_listener_ = listener;
   } else {
     listener->connected();
     // The listener may free this object, so do not access the object after
     // this point.
   }
 }
 
 void WebSharedWorkerProxy::OnMessageReceived(const IPC::Message& message) {
   IPC_BEGIN_MESSAGE_MAP(WebSharedWorkerProxy, message)
     IPC_MESSAGE_HANDLER(ViewMsg_WorkerCreated, OnWorkerCreated)
   IPC_END_MESSAGE_MAP()
 }
 
 void WebSharedWorkerProxy::OnWorkerCreated() {
   // The worker is created - now send off the CreateWorkerContext message and
   // any other queued messages
   SendQueuedMessages();
 
   // Inform any listener that the pending connect event has been sent
   // (this can result in this object being freed).
-  if (m_connectListener) {
-    m_connectListener->connected();
+  if (connect_listener_) {
+    connect_listener_->connected();
   }
 }
-