Changes to upload tracked_objects data from all renderer

chrome/renderer/renderer_tracking.cc

+// 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.
+
+#include "chrome/renderer/renderer_tracking.h"
+
+#include <ctype.h>
+
+#include "base/json/json_writer.h"
+#include "base/logging.h"
+#include "base/message_loop.h"
+#include "base/process.h"
+#include "base/process_util.h"
+#include "base/tracked_objects.h"
+#include "chrome/common/render_messages.h"
+#include "content/public/renderer/render_thread.h"
+
+using content::RenderThread;
+
+RendererTracking::RendererTracking()
+    : ALLOW_THIS_IN_INITIALIZER_LIST(renderer_tracking_factory_(this)) {
+}
+
+RendererTracking::~RendererTracking() {
+}
+
+bool RendererTracking::OnControlMessageReceived(const IPC::Message& message) {
+  bool handled = true;
+  IPC_BEGIN_MESSAGE_MAP(RendererTracking, message)
+    IPC_MESSAGE_HANDLER(ChromeViewMsg_GetRendererTrackedData,
+                        OnGetRendererTrackingData)
+    IPC_MESSAGE_HANDLER(ChromeViewMsg_SetTrackingStatus,
+                        OnSetTrackingStatus)
+    IPC_MESSAGE_UNHANDLED(handled = false)
+  IPC_END_MESSAGE_MAP()
+  return handled;
+}
+
+void RendererTracking::OnGetRendererTrackingData(int sequence_number) {
+  RenderThread::Get()->GetMessageLoop()->PostTask(FROM_HERE,
+      renderer_tracking_factory_.NewRunnableMethod(
+          &RendererTracking::UploadAllTrackingData,
+          sequence_number));
+}
+
+void RendererTracking::OnSetTrackingStatus(bool enable) {
+  tracked_objects::ThreadData::InitializeAndSetTrackingStatus(enable);
+}
+
+void RendererTracking::UploadAllTrackingData(int sequence_number) {
+  scoped_ptr<base::DictionaryValue> value(
+      tracked_objects::ThreadData::ToValue());
+  value->SetInteger("process_id", base::GetCurrentProcId());
+
+  base::JSONWriter::Write(value.get(), false, &pickled_tracking_data_);

[jar (doing other things), 2011/11/03 06:23:15]

Why do we need to write the pickled data into a slot?  We have no further need
fro it (after doing the send) I think. Why do we need to hold on to it?

[ramant (doing other things), 2011/11/03 21:51:39]

Done.

+
+  // Send the sequence number and list of pickled tracking data over synchronous
+  // IPC, so we can clear pickled_tracking_data_ afterwards.
+  RenderThread::Get()->Send(new ChromeViewHostMsg_RendererTrackedData(
+      sequence_number, pickled_tracking_data_));
+}