[WIP2] off-main-thread loading

third_party/WebKit/Source/core/inspector/InspectorNetworkAgent.cpp

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 556 matching lines @@
     auto entry = blocked_urls->at(i);
     if (Matches(url, entry.first)) {
       *result = true;
       return;
     }
   }
   return;
 }
 
 void InspectorNetworkAgent::DidBlockRequest(
-    LocalFrame* frame,
     const ResourceRequest& request,
     DocumentLoader* loader,
     const FetchInitiatorInfo& initiator_info,
     ResourceRequestBlockedReason reason) {
   unsigned long identifier = CreateUniqueIdentifier();
-  WillSendRequestInternal(frame, identifier, loader, request,
-                          ResourceResponse(), initiator_info);
+  WillSendRequestInternal(identifier, loader, request, ResourceResponse(),
+                          initiator_info);
 
   String request_id = IdentifiersFactory::RequestId(identifier);
   String protocol_reason = BuildBlockedReason(reason);
   GetFrontend()->loadingFailed(
       request_id, MonotonicallyIncreasingTime(),
       InspectorPageAgent::ResourceTypeJson(
           resources_data_->GetResourceType(request_id)),
       String(), false, protocol_reason);
 }
 
 void InspectorNetworkAgent::DidChangeResourcePriority(
     unsigned long identifier,
     ResourceLoadPriority load_priority) {
   String request_id = IdentifiersFactory::RequestId(identifier);
   GetFrontend()->resourceChangedPriority(request_id,
                                          ResourcePriorityJSON(load_priority),
                                          MonotonicallyIncreasingTime());
 }
 
 void InspectorNetworkAgent::WillSendRequestInternal(
-    LocalFrame* frame,
     unsigned long identifier,
     DocumentLoader* loader,
     const ResourceRequest& request,
     const ResourceResponse& redirect_response,
     const FetchInitiatorInfo& initiator_info) {
   String request_id = IdentifiersFactory::RequestId(identifier);
-  String loader_id = IdentifiersFactory::LoaderId(loader);
+  String loader_id = loader ? IdentifiersFactory::LoaderId(loader) : "";
   resources_data_->ResourceCreated(request_id, loader_id, request.Url());
 
   InspectorPageAgent::ResourceType type = InspectorPageAgent::kOtherResource;
   if (initiator_info.name == FetchInitiatorTypeNames::xmlhttprequest) {
     type = InspectorPageAgent::kXHRResource;
     resources_data_->SetResourceType(request_id, type);
   } else if (initiator_info.name == FetchInitiatorTypeNames::document) {
     type = InspectorPageAgent::kDocumentResource;
     resources_data_->SetResourceType(request_id, type);
   }
 
-  String frame_id =
-      loader->GetFrame() ? IdentifiersFactory::FrameId(loader->GetFrame()) : "";
+  String frame_id = loader && loader->GetFrame()
+                        ? IdentifiersFactory::FrameId(loader->GetFrame())
+                        : "";
   std::unique_ptr<protocol::Network::Initiator> initiator_object =
       BuildInitiatorObject(
-          loader->GetFrame() ? loader->GetFrame()->GetDocument() : 0,
+          loader && loader->GetFrame() ? loader->GetFrame()->GetDocument() : 0,
           initiator_info);
   if (initiator_info.name == FetchInitiatorTypeNames::document) {
     FrameNavigationInitiatorMap::iterator it =
         frame_navigation_initiator_map_.find(frame_id);
     if (it != frame_navigation_initiator_map_.end())
       initiator_object = it->value->clone();
   }
 
   std::unique_ptr<protocol::Network::Request> request_info(
       BuildObjectForResourceRequest(request));
 
-  request_info->setMixedContentType(MixedContentTypeForContextType(
-      MixedContentChecker::ContextTypeForInspector(frame, request)));
+  if (loader) {
+    request_info->setMixedContentType(MixedContentTypeForContextType(
+        MixedContentChecker::ContextTypeForInspector(loader->GetFrame(),
+                                                     request)));
+  }
 
   request_info->setReferrerPolicy(
       GetReferrerPolicy(request.GetReferrerPolicy()));
   if (initiator_info.is_link_preload)
     request_info->setIsLinkPreload(true);
 
   String resource_type = InspectorPageAgent::ResourceTypeJson(type);
   GetFrontend()->requestWillBeSent(
       request_id, frame_id, loader_id,
-      UrlWithoutFragment(loader->Url()).GetString(), std::move(request_info),
-      MonotonicallyIncreasingTime(), CurrentTime(), std::move(initiator_object),
+      loader ? UrlWithoutFragment(loader->Url()).GetString() : "",
+      std::move(request_info), MonotonicallyIncreasingTime(), CurrentTime(),
+      std::move(initiator_object),
       BuildObjectForResourceResponse(redirect_response), resource_type);
   if (pending_xhr_replay_data_ && !pending_xhr_replay_data_->Async())
     GetFrontend()->flush();
 }
 
 void InspectorNetworkAgent::WillSendRequest(
-    LocalFrame* frame,
     unsigned long identifier,
     DocumentLoader* loader,
     ResourceRequest& request,
     const ResourceResponse& redirect_response,
     const FetchInitiatorInfo& initiator_info) {
   // Ignore the request initiated internally.
   if (initiator_info.name == FetchInitiatorTypeNames::internal)
     return;
 
   if (initiator_info.name == FetchInitiatorTypeNames::document &&
@@ skipping 19 matching lines @@
         request.GetRequestContext() != WebURLRequest::kRequestContextInternal) {
       request.SetCachePolicy(WebCachePolicy::kBypassCacheLoadOnlyFromCache);
     } else {
       request.SetCachePolicy(WebCachePolicy::kBypassingCache);
     }
     request.SetShouldResetAppCache(true);
   }
   if (state_->booleanProperty(NetworkAgentState::kBypassServiceWorker, false))
     request.SetServiceWorkerMode(WebURLRequest::ServiceWorkerMode::kNone);
 
-  WillSendRequestInternal(frame, identifier, loader, request, redirect_response,
+  WillSendRequestInternal(identifier, loader, request, redirect_response,
                           initiator_info);
 
   if (!host_id_.IsEmpty())
     request.AddHTTPHeaderField(
         HTTPNames::X_DevTools_Emulate_Network_Conditions_Client_Id,
         AtomicString(host_id_));
 
   request.SetHTTPHeaderField(
       HTTPNames::X_DevTools_Request_Id,
       AtomicString(IdentifiersFactory::RequestId(identifier)));
 }
 
 void InspectorNetworkAgent::MarkResourceAsCached(unsigned long identifier) {
   GetFrontend()->requestServedFromCache(
       IdentifiersFactory::RequestId(identifier));
 }
 
 void InspectorNetworkAgent::DidReceiveResourceResponse(
-    LocalFrame* frame,
     unsigned long identifier,
     DocumentLoader* loader,
     const ResourceResponse& response,
     Resource* cached_resource) {
   String request_id = IdentifiersFactory::RequestId(identifier);
   bool is_not_modified = response.HttpStatusCode() == 304;
 
   bool resource_is_empty = true;
   std::unique_ptr<protocol::Network::Response> resource_response =
       BuildObjectForResourceResponse(response, cached_resource,
@@ skipping 15 matching lines @@
   if (type == InspectorPageAgent::kDocumentResource && loader &&
       loader->GetSubstituteData().IsValid())
     return;
 
   // Resources are added to NetworkResourcesData as a WeakMember here and
   // removed in willDestroyResource() called in the prefinalizer of Resource.
   // Because NetworkResourceData retains weak references only, it
   // doesn't affect Resource lifetime.
   if (cached_resource)
     resources_data_->AddResource(request_id, cached_resource);
-  String frame_id = IdentifiersFactory::FrameId(frame);
+  String frame_id = loader && loader->GetFrame()
+                        ? IdentifiersFactory::FrameId(loader->GetFrame())
+                        : "";
   String loader_id = loader ? IdentifiersFactory::LoaderId(loader) : "";
   resources_data_->ResponseReceived(request_id, frame_id, response);
   resources_data_->SetResourceType(request_id, type);
 
   if (response.GetSecurityStyle() != ResourceResponse::kSecurityStyleUnknown &&
       response.GetSecurityStyle() !=
           ResourceResponse::kSecurityStyleUnauthenticated) {
     const ResourceResponse::SecurityDetails* response_security_details =
         response.GetSecurityDetails();
     resources_data_->SetCertificate(request_id,
                                     response_security_details->certificate);
   }
 
   if (resource_response && !resource_is_empty)
     GetFrontend()->responseReceived(request_id, frame_id, loader_id,
                                     MonotonicallyIncreasingTime(),
                                     InspectorPageAgent::ResourceTypeJson(type),
                                     std::move(resource_response));
   // If we revalidated the resource and got Not modified, send content length
   // following didReceiveResponse as there will be no calls to didReceiveData
   // from the network stack.
   if (is_not_modified && cached_resource && cached_resource->EncodedSize())
-    DidReceiveData(frame, identifier, 0, cached_resource->EncodedSize());
+    DidReceiveData(identifier, loader, 0, cached_resource->EncodedSize());
 }
 
 static bool IsErrorStatusCode(int status_code) {
   return status_code >= 400;
 }
 
-void InspectorNetworkAgent::DidReceiveData(LocalFrame*,
-                                           unsigned long identifier,
+void InspectorNetworkAgent::DidReceiveData(unsigned long identifier,
+                                           DocumentLoader* loader,
                                            const char* data,
                                            int data_length) {
   String request_id = IdentifiersFactory::RequestId(identifier);
 
   if (data) {
     NetworkResourcesData::ResourceData const* resource_data =
         resources_data_->Data(request_id);
     if (resource_data &&
         (!resource_data->CachedResource() ||
          resource_data->CachedResource()->GetDataBufferingPolicy() ==
              kDoNotBufferData ||
          IsErrorStatusCode(resource_data->HttpStatusCode())))
       resources_data_->MaybeAddResourceData(request_id, data, data_length);
   }
 
   GetFrontend()->dataReceived(
       request_id, MonotonicallyIncreasingTime(), data_length,
       resources_data_->GetAndClearPendingEncodedDataLength(request_id));
 }
 
 void InspectorNetworkAgent::DidReceiveEncodedDataLength(
-    LocalFrame*,
     unsigned long identifier,
     int encoded_data_length) {
   String request_id = IdentifiersFactory::RequestId(identifier);
   resources_data_->AddPendingEncodedDataLength(request_id, encoded_data_length);
 }
 
-void InspectorNetworkAgent::DidFinishLoading(LocalFrame*,
-                                             unsigned long identifier,
+void InspectorNetworkAgent::DidFinishLoading(unsigned long identifier,
+                                             DocumentLoader*,
                                              double monotonic_finish_time,
                                              int64_t encoded_data_length,
                                              int64_t decoded_body_length) {
   String request_id = IdentifiersFactory::RequestId(identifier);
   NetworkResourcesData::ResourceData const* resource_data =
       resources_data_->Data(request_id);
 
   int pending_encoded_data_length =
       resources_data_->GetAndClearPendingEncodedDataLength(request_id);
   if (pending_encoded_data_length > 0) {
@@ skipping 16 matching lines @@
                                  encoded_data_length);
 }
 
 void InspectorNetworkAgent::DidReceiveCORSRedirectResponse(
     LocalFrame* frame,
     unsigned long identifier,
     DocumentLoader* loader,
     const ResourceResponse& response,
     Resource* resource) {
   // Update the response and finish loading
-  DidReceiveResourceResponse(frame, identifier, loader, response, resource);
-  DidFinishLoading(frame, identifier, 0,
+  DidReceiveResourceResponse(identifier, loader, response, resource);
+  DidFinishLoading(identifier, loader, 0,
                    WebURLLoaderClient::kUnknownEncodedDataLength, 0);
 }
 
 void InspectorNetworkAgent::DidFailLoading(unsigned long identifier,
                                            const ResourceError& error) {
   String request_id = IdentifiersFactory::RequestId(identifier);
   bool canceled = error.IsCancellation();
   GetFrontend()->loadingFailed(
       request_id, MonotonicallyIncreasingTime(),
       InspectorPageAgent::ResourceTypeJson(
@@ skipping 67 matching lines @@
   pending_xhr_replay_data_ = XHRReplayData::Create(
       xhr->GetExecutionContext(), method, UrlWithoutFragment(url), async,
       form_data.Get(), include_credentials);
   for (const auto& header : headers)
     pending_xhr_replay_data_->AddHeader(header.key, header.value);
 }
 
 void InspectorNetworkAgent::DelayedRemoveReplayXHR(XMLHttpRequest* xhr) {
   if (!replay_xhrs_.Contains(xhr))
     return;
+  // TODO(horo): |m_removeFinishedReplayXHRTimer| is null on workers.
+  DCHECK(remove_finished_replay_xhr_timer_);
   replay_xhrs_to_be_deleted_.insert(xhr);
   replay_xhrs_.erase(xhr);
-  remove_finished_replay_xhr_timer_.StartOneShot(0, BLINK_FROM_HERE);
+  remove_finished_replay_xhr_timer_->StartOneShot(0, BLINK_FROM_HERE);
 }
 
 void InspectorNetworkAgent::DidFailXHRLoading(ExecutionContext* context,
                                               XMLHttpRequest* xhr,
                                               ThreadableLoaderClient* client,
                                               const AtomicString& method,
                                               const String& url) {
   DidFinishXHRInternal(context, xhr, client, method, url, false);
 }
 
@@ skipping 450 matching lines @@
   else
     GetNetworkStateNotifier().ClearOverride();
   return Response::OK();
 }
 
 Response InspectorNetworkAgent::setCacheDisabled(bool cache_disabled) {
   // TODO(ananta)
   // We should extract network cache state into a global entity which can be
   // queried from FrameLoader and other places.
   state_->setBoolean(NetworkAgentState::kCacheDisabled, cache_disabled);
-  if (cache_disabled)
+  if (cache_disabled && IsMainThread())
     GetMemoryCache()->EvictResources();
   return Response::OK();
 }
 
 Response InspectorNetworkAgent::setBypassServiceWorker(bool bypass) {
   state_->setBoolean(NetworkAgentState::kBypassServiceWorker, bypass);
   return Response::OK();
 }
 
 Response InspectorNetworkAgent::setDataSizeLimitsForTest(int max_total,
@@ skipping 19 matching lines @@
     }
   }
   return Response::OK();
 }
 
 void InspectorNetworkAgent::DidCommitLoad(LocalFrame* frame,
                                           DocumentLoader* loader) {
   if (loader->GetFrame() != inspected_frames_->Root())
     return;
 
-  if (state_->booleanProperty(NetworkAgentState::kCacheDisabled, false))
+  if (state_->booleanProperty(NetworkAgentState::kCacheDisabled, false) &&
+      IsMainThread()) {
     GetMemoryCache()->EvictResources(MemoryCache::kDoNotEvictUnusedPreloads);
+  }
 
   resources_data_->Clear(IdentifiersFactory::LoaderId(loader));
 }
 
 void InspectorNetworkAgent::FrameScheduledNavigation(LocalFrame* frame,
                                                      double) {
   String frame_id = IdentifiersFactory::FrameId(frame);
   frames_with_scheduled_navigation_.insert(frame_id);
   if (!frames_with_scheduled_client_navigation_.Contains(frame_id)) {
     frame_navigation_initiator_map_.Set(
@@ skipping 30 matching lines @@
 void InspectorNetworkAgent::SetHostId(const String& host_id) {
   host_id_ = host_id;
 }
 
 bool InspectorNetworkAgent::FetchResourceContent(Document* document,
                                                  const KURL& url,
                                                  String* content,
                                                  bool* base64_encoded) {
   // First try to fetch content from the cached resource.
   Resource* cached_resource = document->Fetcher()->CachedResource(url);
-  if (!cached_resource)
+  if (!cached_resource && IsMainThread()) {
     cached_resource = GetMemoryCache()->ResourceForURL(
         url, document->Fetcher()->GetCacheIdentifier());
+  }
   if (cached_resource && InspectorPageAgent::CachedResourceContent(
                              cached_resource, content, base64_encoded))
     return true;
 
   // Then fall back to resource data.
   for (auto& resource : resources_data_->Resources()) {
     if (resource->RequestedURL() == url) {
       *content = resource->Content();
       *base64_encoded = resource->Base64Encoded();
       return true;
@@ skipping 12 matching lines @@
   replay_xhrs_to_be_deleted_.clear();
 }
 
 InspectorNetworkAgent::InspectorNetworkAgent(InspectedFrames* inspected_frames)
     : inspected_frames_(inspected_frames),
       resources_data_(
           NetworkResourcesData::Create(g_maximum_total_buffer_size,
                                        g_maximum_resource_buffer_size)),
       pending_request_(nullptr),
       remove_finished_replay_xhr_timer_(
-          TaskRunnerHelper::Get(TaskType::kUnspecedLoading,
-                                inspected_frames->Root()),
-          this,
-          &InspectorNetworkAgent::RemoveFinishedReplayXHRFired) {}
+          inspected_frames
+              ? new TaskRunnerTimer<InspectorNetworkAgent>(
+                    TaskRunnerHelper::Get(TaskType::kUnspecedLoading,
+                                          inspected_frames->Root()),
+                    this,
+                    &InspectorNetworkAgent::RemoveFinishedReplayXHRFired)
+              : nullptr) {}
 
 void InspectorNetworkAgent::ShouldForceCORSPreflight(bool* result) {
   if (state_->booleanProperty(NetworkAgentState::kCacheDisabled, false))
     *result = true;
 }
 
 }  // namespace blink