1/*
2 * Copyright (C) 2011 Google, Inc. All Rights Reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY GOOGLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL GOOGLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "DocumentLoadTiming.h"
28
29#include "Document.h"
30#include "DocumentLoader.h"
31#include "Frame.h"
32#include "Page.h"
33#include "SecurityOrigin.h"
34#include <wtf/CurrentTime.h>
35#include <wtf/RefPtr.h>
36
37namespace WebCore {
38
39DocumentLoadTiming::DocumentLoadTiming()
40    : m_referenceMonotonicTime(0.0)
41    , m_referenceWallTime(0.0)
42    , m_navigationStart(0.0)
43    , m_unloadEventStart(0.0)
44    , m_unloadEventEnd(0.0)
45    , m_redirectStart(0.0)
46    , m_redirectEnd(0.0)
47    , m_redirectCount(0)
48    , m_fetchStart(0.0)
49    , m_responseEnd(0.0)
50    , m_loadEventStart(0.0)
51    , m_loadEventEnd(0.0)
52    , m_hasCrossOriginRedirect(false)
53    , m_hasSameOriginAsPreviousDocument(false)
54{
55}
56
57double DocumentLoadTiming::monotonicTimeToZeroBasedDocumentTime(double monotonicTime) const
58{
59    if (!monotonicTime)
60        return 0.0;
61    return monotonicTime - m_referenceMonotonicTime;
62}
63
64double DocumentLoadTiming::monotonicTimeToPseudoWallTime(double monotonicTime) const
65{
66    if (!monotonicTime)
67        return 0.0;
68    return m_referenceWallTime + monotonicTime - m_referenceMonotonicTime;
69}
70
71void DocumentLoadTiming::markNavigationStart()
72{
73    ASSERT(!m_navigationStart && !m_referenceMonotonicTime && !m_referenceWallTime);
74
75    m_navigationStart = m_referenceMonotonicTime = monotonicallyIncreasingTime();
76    m_referenceWallTime = currentTime();
77}
78
79void DocumentLoadTiming::addRedirect(const URL& redirectingUrl, const URL& redirectedUrl)
80{
81    m_redirectCount++;
82    if (!m_redirectStart)
83        m_redirectStart = m_fetchStart;
84    m_redirectEnd = m_fetchStart = monotonicallyIncreasingTime();
85    // Check if the redirected url is allowed to access the redirecting url's timing information.
86    RefPtr<SecurityOrigin> redirectedSecurityOrigin = SecurityOrigin::create(redirectedUrl);
87    m_hasCrossOriginRedirect = !redirectedSecurityOrigin->canRequest(redirectingUrl);
88}
89
90} // namespace WebCore
91