blob: 39f8cc5a9cb8c75d3d70b7dbaa4f5d0c9c38cfc2 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
|
// Copyright (c) 2012 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_PAGE_LOAD_HISTOGRAMS_H_
#define CHROME_RENDERER_PAGE_LOAD_HISTOGRAMS_H_
#include "base/basictypes.h"
#include "base/memory/weak_ptr.h"
#include "content/public/renderer/render_view_observer.h"
namespace blink {
class WebDataSource;
}
namespace content {
class DocumentState;
}
class PageLoadHistograms : public content::RenderViewObserver {
public:
explicit PageLoadHistograms(content::RenderView* render_view);
~PageLoadHistograms() override;
private:
// RenderViewObserver implementation.
void FrameWillClose(blink::WebFrame* frame) override;
void ClosePage() override;
void DidUpdateLayout() override;
// Dump all page load histograms appropriate for the given frame.
//
// This method will only dump once-per-instance, so it is safe to call
// multiple times.
//
// The time points we keep are
// request: time document was requested by user
// start: time load of document started
// commit: time load of document started
// finish_document: main document loaded, before onload()
// finish_all_loads: after onload() and all resources are loaded
// first_paint: first paint performed
// first_paint_after_load: first paint performed after load is finished
// begin: request if it was user requested, start otherwise
//
// It's possible for the request time not to be set, if a client
// redirect had been done (the user never requested the page)
// Also, it's possible to load a page without ever laying it out
// so first_paint and first_paint_after_load can be 0.
void Dump(blink::WebFrame* frame);
bool ShouldDump(blink::WebFrame* frame);
void MaybeDumpFirstLayoutHistograms();
void LogPageLoadTime(const content::DocumentState* load_times,
const blink::WebDataSource* ds) const;
bool dumped_first_layout_histograms_;
base::WeakPtrFactory<PageLoadHistograms> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(PageLoadHistograms);
};
#endif // CHROME_RENDERER_PAGE_LOAD_HISTOGRAMS_H_
|
