Add chrome to the repository.

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@15 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 201 insertions, 0 deletions

diff --git a/chrome/browser/page_load_tracker.h b/chrome/browser/page_load_tracker.h
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+// Copyright 2008, 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
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// PageLoadTracker tracks performance related data on page loading. Its lifetime
+// and usage are as follows:
+// (1) Everytime when render process navigates to a new page, an instance of
+// PageLoadTracker is created and hooked into the corresponding WebContents
+// object.
+// (2) During the page loading, the PageLoadTracker records measurement data
+// around major events. For now these include url and time of each frame
+// navigation. We may add Java script activity and render process memory usage
+// later. But the list will be kept as minimal to reduce the overhead.
+// (3) When the page loading stops, the PageLoadTracker is detached from
+// WebContents and added to a global list.
+//
+// See the comments in navigation_profiler.h for an overview of profiling
+// architecture.
+
+#ifndef CHROME_BROWSER_PAGE_LOAD_TRACKER_H__
+#define CHROME_BROWSER_PAGE_LOAD_TRACKER_H__
+
+#include <windows.h>
+#include <atlbase.h>
+#include <atlapp.h>
+#include <atlmisc.h>
+
+#include <string>
+#include <vector>
+
+#include "base/basictypes.h"
+#include "base/time.h"
+#include "chrome/common/page_transition_types.h"
+#include "chrome/views/view.h"
+#include "googleurl/src/gurl.h"
+#include "net/url_request/url_request_job.h"
+#include "testing/gtest/include/gtest/gtest_prod.h"
+
+class ChromeCanvas;
+
+// Tracks one frame navigation within the page.
+class FrameNavigationMetrics {
+ public:
+  FrameNavigationMetrics(PageTransition::Type type,
+                         TimeTicks start_time,
+                         const GURL& url,
+                         int32 page_id);
+
+  virtual ~FrameNavigationMetrics();
+
+  PageTransition::Type type() const { return type_; }
+
+  TimeTicks start_time() const { return start_time_; }
+
+  TimeTicks end_time() const { return end_time_; }
+  void set_end_time(TimeTicks end_time) { end_time_ = end_time; }
+
+  bool end_time_valid() const { return end_time_valid_; }
+  void set_end_time_valid(bool valid) { end_time_valid_ = valid; }
+
+  const GURL& url() { return url_; }
+
+  int32 page_id() const { return page_id_; }
+
+  // Append the text report of the frame loading to the input string.
+  void AppendText(std::wstring* text);
+
+ private:
+  // The transition type indicates whether this is a main frame or sub frame.
+  PageTransition::Type type_;
+
+  // Time when the frame navigation starts.
+  TimeTicks start_time_;
+
+  // Time when the render stops loading the frame.
+  // Its value is only valid for main frame.
+  TimeTicks end_time_;
+
+  // True if end_time_ has been set, false otherwise.
+  // Used to prevent end_time_ from being overwritten if there are multiple
+  // updates on frame status.
+  bool end_time_valid_;
+
+  // The URL of the frame.
+  GURL url_;
+
+  // Page ID of this frame navigation
+  int32 page_id_;
+};
+
+class PageLoadTracker {
+  FRIEND_TEST(PageLoadTrackerUnitTest, AddMetrics);
+ public:
+  typedef std::vector<FrameNavigationMetrics*> FrameMetricsVector;
+  typedef FrameMetricsVector::const_iterator FrameMetricsIterator;
+
+  typedef std::vector<URLRequestJobMetrics*> JobMetricsVector;
+  typedef JobMetricsVector::const_iterator JobMetricsIterator;
+
+  PageLoadTracker(const GURL& url, int render_process_host_id, int routing_id,
+                  TimeTicks start_time);
+
+  virtual ~PageLoadTracker();
+
+  // Add a FrameNavigationMetrics entry into the frame list.
+  // The PageLoadTracker owns this object from now on.
+  void AddFrameMetrics(FrameNavigationMetrics* frame_metrics);
+
+  // Set the end time of the main frame corresponding to the page_id.
+  void SetLoadingEndTime(int32 page_id, TimeTicks time);
+
+  // Add a new URLRequestJobMetrics entry into the job data list.
+  // The PageLoadTracker owns this object from now on.
+  void AddJobMetrics(URLRequestJobMetrics* job_metrics);
+
+  const GURL& url() const { return url_; }
+
+  int render_process_host_id() const { return render_process_host_id_; }
+
+  int routing_id() const { return routing_id_; }
+
+  TimeTicks start_time() const { return start_time_; }
+
+  TimeTicks stop_time() const { return stop_time_; }
+
+  // Append the text report of the page loading to the input string.
+  void AppendText(std::wstring* text);
+
+  // Draw the graphic report of the page loading on canvas.
+  void Draw(const CRect& bound, ChromeCanvas* canvas);
+
+ private:
+  // List of frames loaded within the page. It may contain multiple main frame
+  // entries if this page has pop-ups.
+  FrameMetricsVector frame_metrics_list_;
+
+  // List of IO statistics of URLRequestJob associated with the page
+  JobMetricsVector job_metrics_list_;
+
+  // URL of the page
+  GURL url_;
+
+  // The ID of the RenderProcessHost that serves the page
+  int render_process_host_id_;
+
+  // The listener ID (or the message routing ID) of the TabContents
+  int routing_id_;
+
+  // Time when the render process navigates to the page.
+  TimeTicks start_time_;
+
+  // Time when the render process stops loading the page.
+  TimeTicks stop_time_;
+
+  // True if stop_time_ has been set, false otherwise.
+  bool stop_time_set_;
+};
+
+// Graphical view of a page loading
+class PageLoadView : public ChromeViews::View {
+ public:
+  PageLoadView();
+  virtual ~PageLoadView();
+
+  virtual void Layout();
+  virtual void Paint(ChromeCanvas* canvas);
+
+  void SetPage(PageLoadTracker* page) {
+    page_ = page;
+  }
+
+ private:
+  PageLoadTracker* page_;
+};
+
+#endif  // CHROME_BROWSER_PAGE_LOAD_TRACKER_H__