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75 lines
2.8 KiB
C++
75 lines
2.8 KiB
C++
/*
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* Copyright (C) 2011 Google, Inc. All Rights Reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY GOOGLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GOOGLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "sky/engine/core/loader/DocumentLoadTiming.h"
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#include "sky/engine/wtf/RefPtr.h"
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namespace blink {
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DocumentLoadTiming::DocumentLoadTiming()
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: m_referenceMonotonicTime(0.0)
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, m_referenceWallTime(0.0)
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, m_navigationStart(0.0)
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, m_unloadEventStart(0.0)
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, m_unloadEventEnd(0.0)
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, m_fetchStart(0.0)
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, m_responseEnd(0.0)
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, m_loadEventStart(0.0)
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, m_loadEventEnd(0.0)
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, m_hasSameOriginAsPreviousDocument(false)
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{
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}
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double DocumentLoadTiming::monotonicTimeToPseudoWallTime(double monotonicTime) const
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{
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if (!monotonicTime)
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return 0.0;
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return m_referenceWallTime + monotonicTime - m_referenceMonotonicTime;
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}
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void DocumentLoadTiming::markNavigationStart()
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{
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ASSERT(!m_navigationStart && !m_referenceMonotonicTime && !m_referenceWallTime);
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m_navigationStart = m_referenceMonotonicTime = monotonicallyIncreasingTime();
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m_referenceWallTime = currentTime();
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}
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void DocumentLoadTiming::setNavigationStart(double navigationStart)
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{
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ASSERT(m_referenceMonotonicTime && m_referenceWallTime);
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m_navigationStart = navigationStart;
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// |m_referenceMonotonicTime| and |m_referenceWallTime| represent
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// navigationStart. When the embedder sets navigationStart (because the
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// navigation started earlied on the browser side), we need to adjust these
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// as well.
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m_referenceWallTime = monotonicTimeToPseudoWallTime(navigationStart);
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m_referenceMonotonicTime = navigationStart;
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}
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} // namespace blink
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