Initial support for Renderer Side Histograms...

chrome/renderer/render_thread.h

 // Copyright (c) 2006-2008 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 CHROME_RENDERER_RENDER_THREAD_H_
 #define CHROME_RENDERER_RENDER_THREAD_H_
 
 #include <vector>
 
 #include "base/gfx/native_widget_types.h"
 #include "base/shared_memory.h"
 #include "base/task.h"
 #include "build/build_config.h"
 #include "chrome/common/child_thread.h"
+#include "chrome/renderer/renderer_histogram_snapshots.h"
 
 class FilePath;
 class NotificationService;
 class RenderDnsMaster;
+class RendererHistogram;
 class SkBitmap;
 class UserScriptSlave;
 class VisitedLinkSlave;
 struct ModalDialogEvent;
 struct WebPreferences;
 
 // The RenderThreadBase is the minimal interface that a RenderView/Widget
 // expects from a render thread. The interface basically abstracts a way to send
 // and receive messages.
 class RenderThreadBase {
@@ skipping 50 matching lines @@
 
   // Gets the VisitedLinkSlave instance for this thread
   VisitedLinkSlave* visited_link_slave() const { return visited_link_slave_; }
 
   // Gets the UserScriptSlave instance for this thread
   UserScriptSlave* user_script_slave() const { return user_script_slave_; }
 
   // Do DNS prefetch resolution of a hostname.
   void Resolve(const char* name, size_t length);
 
+  // Send all the Histogram data to browser.
+  void SendHistograms();
+
   // Invokes InformHostOfCacheStats after a short delay.  Used to move this
   // bookkeeping operation off the critical latency path.
   void InformHostOfCacheStatsLater();
 
  private:
   virtual void OnControlMessageReceived(const IPC::Message& msg);
 
   // Called by the thread base class
   virtual void Init();
   virtual void CleanUp();
 
   void OnUpdateVisitedLinks(base::SharedMemoryHandle table);
   void OnUpdateUserScripts(base::SharedMemoryHandle table);
 
   void OnPluginMessage(const FilePath& plugin_path,
                        const std::vector<uint8>& data);
   void OnSetNextPageID(int32 next_page_id);
   void OnCreateNewView(gfx::NativeViewId parent_hwnd,
                        ModalDialogEvent modal_dialog_event,
                        const WebPreferences& webkit_prefs,
                        int32 view_id);
   void OnTransferBitmap(const SkBitmap& bitmap, int resource_id);
   void OnSetCacheCapacities(size_t min_dead_capacity,
                             size_t max_dead_capacity,
                             size_t capacity);
   void OnGetCacheResourceStats();
 
+  // Send all histograms to browser.
+  void OnGetRendererHistograms();
+
   // Gather usage statistics from the in-memory cache and inform our host.
   // These functions should be call periodically so that the host can make
   // decisions about how to allocation resources using current information.
   void InformHostOfCacheStats();
 
   // These objects live solely on the render thread.
   VisitedLinkSlave* visited_link_slave_;
   UserScriptSlave* user_script_slave_;
 
   scoped_ptr<RenderDnsMaster> render_dns_master_;
 
+  scoped_ptr<RendererHistogramSnapshots> renderer_histogram_snapshots_;
+
   scoped_ptr<ScopedRunnableMethodFactory<RenderThread> > cache_stats_factory_;
 
   scoped_ptr<NotificationService> notification_service_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderThread);
 };
 
 #endif  // CHROME_RENDERER_RENDER_THREAD_H_