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27 #include "core/loader/DocumentLoadTiming.h"
29 #include "platform/weborigin/SecurityOrigin.h"
30 #include "wtf/RefPtr.h"
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)
45 , m_loadEventStart(0.0)
47 , m_hasCrossOriginRedirect(false)
48 , m_hasSameOriginAsPreviousDocument(false)
52 double DocumentLoadTiming::monotonicTimeToZeroBasedDocumentTime(double monotonicTime) const
56 return monotonicTime - m_referenceMonotonicTime;
59 double DocumentLoadTiming::monotonicTimeToPseudoWallTime(double monotonicTime) const
63 return m_referenceWallTime + monotonicTime - m_referenceMonotonicTime;
66 void DocumentLoadTiming::markNavigationStart()
68 ASSERT(!m_navigationStart && !m_referenceMonotonicTime && !m_referenceWallTime);
70 m_navigationStart = m_referenceMonotonicTime = monotonicallyIncreasingTime();
71 m_referenceWallTime = currentTime();
74 void DocumentLoadTiming::setNavigationStart(double navigationStart)
76 ASSERT(m_referenceMonotonicTime && m_referenceWallTime);
77 m_navigationStart = navigationStart;
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
83 m_referenceWallTime = monotonicTimeToPseudoWallTime(navigationStart);
84 m_referenceMonotonicTime = navigationStart;
87 void DocumentLoadTiming::addRedirect(const KURL& redirectingUrl, const KURL& redirectedUrl)
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);