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/*
* Copyright (C) 2010 Google, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef ResourceLoadTiming_h
#define ResourceLoadTiming_h
#include "platform/PlatformExport.h"
#include "wtf/PassRefPtr.h"
#include "wtf/RefCounted.h"
#include "wtf/RefPtr.h"
namespace blink {
class PLATFORM_EXPORT ResourceLoadTiming
: public RefCounted<ResourceLoadTiming> {
public:
static PassRefPtr<ResourceLoadTiming> create();
PassRefPtr<ResourceLoadTiming> deepCopy();
bool operator==(const ResourceLoadTiming&) const;
bool operator!=(const ResourceLoadTiming&) const;
void setDnsStart(double);
void setRequestTime(double);
void setProxyStart(double);
void setProxyEnd(double);
void setDnsEnd(double);
void setConnectStart(double);
void setConnectEnd(double);
void setWorkerStart(double);
void setWorkerReady(double);
void setSendStart(double);
void setSendEnd(double);
void setReceiveHeadersEnd(double);
void setSslStart(double);
void setSslEnd(double);
void setPushStart(double);
void setPushEnd(double);
double dnsStart() const { return m_dnsStart; }
double requestTime() const { return m_requestTime; }
double proxyStart() const { return m_proxyStart; }
double proxyEnd() const { return m_proxyEnd; }
double dnsEnd() const { return m_dnsEnd; }
double connectStart() const { return m_connectStart; }
double connectEnd() const { return m_connectEnd; }
double workerStart() const { return m_workerStart; }
double workerReady() const { return m_workerReady; }
double sendStart() const { return m_sendStart; }
double sendEnd() const { return m_sendEnd; }
double receiveHeadersEnd() const { return m_receiveHeadersEnd; }
double sslStart() const { return m_sslStart; }
double sslEnd() const { return m_sslEnd; }
double pushStart() const { return m_pushStart; }
double pushEnd() const { return m_pushEnd; }
double calculateMillisecondDelta(double) const;
private:
ResourceLoadTiming();
// We want to present a unified timeline to Javascript. Using walltime is
// problematic, because the clock may skew while resources load. To prevent
// that skew, we record a single reference walltime when root document
// navigation begins. All other times are recorded using
// monotonicallyIncreasingTime(). When a time needs to be presented to
// Javascript, we build a pseudo-walltime using the following equation
// (m_requestTime as example):
// pseudo time = document wall reference +
// (m_requestTime - document monotonic reference).
// All monotonicallyIncreasingTime() in seconds
double m_requestTime;
double m_proxyStart;
double m_proxyEnd;
double m_dnsStart;
double m_dnsEnd;
double m_connectStart;
double m_connectEnd;
double m_workerStart;
double m_workerReady;
double m_sendStart;
double m_sendEnd;
double m_receiveHeadersEnd;
double m_sslStart;
double m_sslEnd;
double m_pushStart;
double m_pushEnd;
};
} // namespace blink
#endif
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