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 "platform/weborigin/SecurityOrigin.h" 30 #include "wtf/RefPtr.h" 31 32 namespace blink { 33 34 DocumentLoadTiming::DocumentLoadTiming() 35 : m_referenceMonotonicTime(0.0) 36 , m_referenceWallTime(0.0) 37 , m_navigationStart(0.0) 38 , m_unloadEventStart(0.0) 39 , m_unloadEventEnd(0.0) 40 , m_redirectStart(0.0) 41 , m_redirectEnd(0.0) 42 , m_redirectCount(0) 43 , m_fetchStart(0.0) 44 , m_responseEnd(0.0) 45 , m_loadEventStart(0.0) 46 , m_loadEventEnd(0.0) 47 , m_hasCrossOriginRedirect(false) 48 , m_hasSameOriginAsPreviousDocument(false) 49 { 50 } 51 52 double DocumentLoadTiming::monotonicTimeToZeroBasedDocumentTime(double monotonicTime) const 53 { 54 if (!monotonicTime) 55 return 0.0; 56 return monotonicTime - m_referenceMonotonicTime; 57 } 58 59 double DocumentLoadTiming::monotonicTimeToPseudoWallTime(double monotonicTime) const 60 { 61 if (!monotonicTime) 62 return 0.0; 63 return m_referenceWallTime + monotonicTime - m_referenceMonotonicTime; 64 } 65 66 void DocumentLoadTiming::markNavigationStart() 67 { 68 ASSERT(!m_navigationStart && !m_referenceMonotonicTime && !m_referenceWallTime); 69 70 m_navigationStart = m_referenceMonotonicTime = monotonicallyIncreasingTime(); 71 m_referenceWallTime = currentTime(); 72 } 73 74 void DocumentLoadTiming::setNavigationStart(double navigationStart) 75 { 76 ASSERT(m_referenceMonotonicTime && m_referenceWallTime); 77 m_navigationStart = navigationStart; 78 79 // |m_referenceMonotonicTime| and |m_referenceWallTime| represent 80 // navigationStart. When the embedder sets navigationStart (because the 81 // navigation started earlied on the browser side), we need to adjust these 82 // as well. 83 m_referenceWallTime = monotonicTimeToPseudoWallTime(navigationStart); 84 m_referenceMonotonicTime = navigationStart; 85 } 86 87 void DocumentLoadTiming::addRedirect(const KURL& redirectingUrl, const KURL& redirectedUrl) 88 { 89 m_redirectCount++; 90 if (!m_redirectStart) 91 m_redirectStart = m_fetchStart; 92 m_redirectEnd = m_fetchStart = monotonicallyIncreasingTime(); 93 // Check if the redirected url is allowed to access the redirecting url's timing information. 94 RefPtr<SecurityOrigin> redirectedSecurityOrigin = SecurityOrigin::create(redirectedUrl); 95 m_hasCrossOriginRedirect = !redirectedSecurityOrigin->canRequest(redirectingUrl); 96 } 97 98 } // namespace blink 99
