third_party/WebKit/Source/core/loader/DocumentLoadTiming.cpp

   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 "core/loader/DocumentLoadTiming.h"
  28
  29 #include "core/loader/DocumentLoader.h"
  30 #include "platform/TraceEvent.h"
  31 #include "platform/weborigin/SecurityOrigin.h"
  32 #include "wtf/RawPtr.h"
  33 #include "wtf/RefPtr.h"
  34
  35 namespace blink {
  36
  37 DocumentLoadTiming::DocumentLoadTiming(DocumentLoader& documentLoader)
  38     : m_referenceMonotonicTime(0.0)
  39     , m_referenceWallTime(0.0)
  40     , m_navigationStart(0.0)
  41     , m_unloadEventStart(0.0)
  42     , m_unloadEventEnd(0.0)
  43     , m_redirectStart(0.0)
  44     , m_redirectEnd(0.0)
  45     , m_redirectCount(0)
  46     , m_fetchStart(0.0)
  47     , m_responseEnd(0.0)
  48     , m_loadEventStart(0.0)
  49     , m_loadEventEnd(0.0)
  50     , m_hasCrossOriginRedirect(false)
  51     , m_hasSameOriginAsPreviousDocument(false)
  52     , m_documentLoader(documentLoader)
  53 {
  54 }
  55
  56 DEFINE_TRACE(DocumentLoadTiming)
  57 {
  58     visitor->trace(m_documentLoader);
  59 }
  60
  61 void DocumentLoadTiming::notifyDocumentTimingChanged()
  62 {
  63     if (m_documentLoader)
  64         m_documentLoader->didChangePerformanceTiming();
  65 }
  66
  67 double DocumentLoadTiming::monotonicTimeToZeroBasedDocumentTime(double monotonicTime) const
  68 {
  69     if (!monotonicTime)
  70         return 0.0;
  71     return monotonicTime - m_referenceMonotonicTime;
  72 }
  73
  74 double DocumentLoadTiming::monotonicTimeToPseudoWallTime(double monotonicTime) const
  75 {
  76     if (!monotonicTime)
  77         return 0.0;
  78     return m_referenceWallTime + monotonicTime - m_referenceMonotonicTime;
  79 }
  80
  81 double DocumentLoadTiming::pseudoWallTimeToMonotonicTime(double pseudoWallTime) const
  82 {
  83     if (!pseudoWallTime)
  84         return 0.0;
  85     return m_referenceMonotonicTime + pseudoWallTime - m_referenceWallTime;
  86 }
  87
  88 void DocumentLoadTiming::markNavigationStart()
  89 {
  90     TRACE_EVENT_MARK("blink.user_timing", "navigationStart");
  91     ASSERT(!m_navigationStart && !m_referenceMonotonicTime && !m_referenceWallTime);
  92
  93     m_navigationStart = m_referenceMonotonicTime = monotonicallyIncreasingTime();
  94     m_referenceWallTime = currentTime();
  95     notifyDocumentTimingChanged();
  96 }
  97
  98 void DocumentLoadTiming::setNavigationStart(double navigationStart)
  99 {
 100     TRACE_EVENT_MARK_WITH_TIMESTAMP("blink.user_timing", "navigationStart", navigationStart);
 101     ASSERT(m_referenceMonotonicTime && m_referenceWallTime);
 102     m_navigationStart = navigationStart;
 103
 104     // |m_referenceMonotonicTime| and |m_referenceWallTime| represent
 105     // navigationStart. When the embedder sets navigationStart (because the
 106     // navigation started earlied on the browser side), we need to adjust these
 107     // as well.
 108     m_referenceWallTime = monotonicTimeToPseudoWallTime(navigationStart);
 109     m_referenceMonotonicTime = navigationStart;
 110     notifyDocumentTimingChanged();
 111 }
 112
 113 void DocumentLoadTiming::addRedirect(const KURL& redirectingUrl, const KURL& redirectedUrl)
 114 {
 115     m_redirectCount++;
 116     if (!m_redirectStart) {
 117         setRedirectStart(m_fetchStart);
 118     }
 119     markRedirectEnd();
 120     markFetchStart();
 121
 122     // Check if the redirected url is allowed to access the redirecting url's timing information.
 123     RefPtr<SecurityOrigin> redirectedSecurityOrigin = SecurityOrigin::create(redirectedUrl);
 124     m_hasCrossOriginRedirect |= !redirectedSecurityOrigin->canRequest(redirectingUrl);
 125 }
 126
 127 void DocumentLoadTiming::markUnloadEventStart()
 128 {
 129     TRACE_EVENT_MARK("blink.user_timing", "unloadEventStart");
 130     m_unloadEventStart = monotonicallyIncreasingTime();
 131     notifyDocumentTimingChanged();
 132 }
 133
 134 void DocumentLoadTiming::markUnloadEventEnd()
 135 {
 136     TRACE_EVENT_MARK("blink.user_timing", "unloadEventEnd");
 137     m_unloadEventEnd = monotonicallyIncreasingTime();
 138     notifyDocumentTimingChanged();
 139 }
 140
 141 void DocumentLoadTiming::markFetchStart()
 142 {
 143     TRACE_EVENT_MARK("blink.user_timing", "fetchStart");
 144     m_fetchStart = monotonicallyIncreasingTime();
 145     notifyDocumentTimingChanged();
 146 }
 147
 148 void DocumentLoadTiming::setResponseEnd(double responseEnd)
 149 {
 150     TRACE_EVENT_MARK_WITH_TIMESTAMP("blink.user_timing", "responseEnd", responseEnd);
 151     m_responseEnd = responseEnd;
 152     notifyDocumentTimingChanged();
 153 }
 154
 155 void DocumentLoadTiming::markLoadEventStart()
 156 {
 157     TRACE_EVENT_MARK("blink.user_timing", "loadEventStart");
 158     m_loadEventStart = monotonicallyIncreasingTime();
 159     notifyDocumentTimingChanged();
 160 }
 161
 162 void DocumentLoadTiming::markLoadEventEnd()
 163 {
 164     TRACE_EVENT_MARK("blink.user_timing", "loadEventEnd");
 165     m_loadEventEnd = monotonicallyIncreasingTime();
 166     notifyDocumentTimingChanged();
 167 }
 168
 169 void DocumentLoadTiming::setRedirectStart(double redirectStart)
 170 {
 171     TRACE_EVENT_MARK_WITH_TIMESTAMP("blink.user_timing", "redirectStart", redirectStart);
 172     m_redirectStart = m_fetchStart;
 173     notifyDocumentTimingChanged();
 174 }
 175
 176 void DocumentLoadTiming::markRedirectEnd()
 177 {
 178     TRACE_EVENT_MARK("blink.user_timing", "redirectEnd");
 179     m_redirectEnd = monotonicallyIncreasingTime();
 180     notifyDocumentTimingChanged();
 181 }
 182
 183 } // namespace blink