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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef CHROME_RENDERER_PAGE_LOAD_HISTOGRAMS_H_ | 5 #ifndef CHROME_RENDERER_PAGE_LOAD_HISTOGRAMS_H_ |
6 #define CHROME_RENDERER_PAGE_LOAD_HISTOGRAMS_H_ | 6 #define CHROME_RENDERER_PAGE_LOAD_HISTOGRAMS_H_ |
7 | 7 |
8 #include "base/basictypes.h" | 8 #include "base/basictypes.h" |
9 #include "content/public/renderer/render_view_observer.h" | 9 #include "content/public/renderer/render_view_observer.h" |
10 | 10 |
11 namespace content { | 11 namespace content { |
12 class DocumentState; | 12 class DocumentState; |
13 } | 13 } |
14 | 14 |
15 class PageLoadHistograms : public content::RenderViewObserver { | 15 class PageLoadHistograms : public content::RenderViewObserver { |
16 public: | 16 public: |
17 explicit PageLoadHistograms(content::RenderView* render_view); | 17 explicit PageLoadHistograms(content::RenderView* render_view); |
18 | 18 |
19 private: | 19 private: |
20 // RenderViewObserver implementation. | 20 // RenderViewObserver implementation. |
21 virtual void FrameWillClose(blink::WebFrame* frame) OVERRIDE; | 21 virtual void FrameWillClose(blink::WebFrame* frame) override; |
22 virtual void ClosePage() OVERRIDE; | 22 virtual void ClosePage() override; |
23 | 23 |
24 // Dump all page load histograms appropriate for the given frame. | 24 // Dump all page load histograms appropriate for the given frame. |
25 // | 25 // |
26 // This method will only dump once-per-instance, so it is safe to call | 26 // This method will only dump once-per-instance, so it is safe to call |
27 // multiple times. | 27 // multiple times. |
28 // | 28 // |
29 // The time points we keep are | 29 // The time points we keep are |
30 // request: time document was requested by user | 30 // request: time document was requested by user |
31 // start: time load of document started | 31 // start: time load of document started |
32 // commit: time load of document started | 32 // commit: time load of document started |
33 // finish_document: main document loaded, before onload() | 33 // finish_document: main document loaded, before onload() |
34 // finish_all_loads: after onload() and all resources are loaded | 34 // finish_all_loads: after onload() and all resources are loaded |
35 // first_paint: first paint performed | 35 // first_paint: first paint performed |
36 // first_paint_after_load: first paint performed after load is finished | 36 // first_paint_after_load: first paint performed after load is finished |
37 // begin: request if it was user requested, start otherwise | 37 // begin: request if it was user requested, start otherwise |
38 // | 38 // |
39 // It's possible for the request time not to be set, if a client | 39 // It's possible for the request time not to be set, if a client |
40 // redirect had been done (the user never requested the page) | 40 // redirect had been done (the user never requested the page) |
41 // Also, it's possible to load a page without ever laying it out | 41 // Also, it's possible to load a page without ever laying it out |
42 // so first_paint and first_paint_after_load can be 0. | 42 // so first_paint and first_paint_after_load can be 0. |
43 void Dump(blink::WebFrame* frame); | 43 void Dump(blink::WebFrame* frame); |
44 | 44 |
45 void LogPageLoadTime(const content::DocumentState* load_times, | 45 void LogPageLoadTime(const content::DocumentState* load_times, |
46 const blink::WebDataSource* ds) const; | 46 const blink::WebDataSource* ds) const; |
47 | 47 |
48 DISALLOW_COPY_AND_ASSIGN(PageLoadHistograms); | 48 DISALLOW_COPY_AND_ASSIGN(PageLoadHistograms); |
49 }; | 49 }; |
50 | 50 |
51 #endif // CHROME_RENDERER_PAGE_LOAD_HISTOGRAMS_H_ | 51 #endif // CHROME_RENDERER_PAGE_LOAD_HISTOGRAMS_H_ |
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