Source/WebCore/page/PerformanceResourceTiming.cpp

/*
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#include "config.h"
#include "PerformanceResourceTiming.h"

#if ENABLE(RESOURCE_TIMING)

#include "Document.h"
#include "DocumentLoadTiming.h"
#include "DocumentLoader.h"
#include "KURL.h"
#include "ResourceRequest.h"
#include "ResourceResponse.h"
#include "SecurityOrigin.h"
#include <wtf/Vector.h>

namespace WebCore {

PerformanceResourceTiming::PerformanceResourceTiming(const ResourceRequest& request, const ResourceResponse& response, double finishTime, Document* requestingDocument)
    : PerformanceEntry(request.url().string(), "resource", response.resourceLoadTiming()->requestTime, finishTime)
    , m_timing(response.resourceLoadTiming())
    , m_finishTime(finishTime)
    , m_requestingDocument(requestingDocument)
{
}

PerformanceResourceTiming::~PerformanceResourceTiming()
{
}

String PerformanceResourceTiming::initiatorType() const
{
    // FIXME: This should be decided by the resource type.
    return "other";
}

// FIXME: Need to enforce same-origin policy on these.

double PerformanceResourceTiming::redirectStart() const
{
    // FIXME: Need to track and report redirects for resources.
    return 0;
}

double PerformanceResourceTiming::redirectEnd() const
{
    return 0;
}

double PerformanceResourceTiming::fetchStart() const
{
    return monotonicTimeToDocumentMilliseconds(m_timing->requestTime);
}

double PerformanceResourceTiming::domainLookupStart() const
{
    if (m_timing->dnsStart < 0)
        return fetchStart();

    return resourceTimeToDocumentMilliseconds(m_timing->dnsStart);
}

double PerformanceResourceTiming::domainLookupEnd() const
{
    if (m_timing->dnsEnd < 0)
        return domainLookupStart();

    return resourceTimeToDocumentMilliseconds(m_timing->dnsEnd);
}

double PerformanceResourceTiming::connectStart() const
{
    if (m_timing->connectStart < 0) // Connection was reused.
        return domainLookupEnd();

    // connectStart includes any DNS time, so we may need to trim that off.
    int connectStart = m_timing->connectStart;
    if (m_timing->dnsEnd >= 0)
        connectStart = m_timing->dnsEnd;

    return resourceTimeToDocumentMilliseconds(connectStart);
}

double PerformanceResourceTiming::connectEnd() const
{
    if (m_timing->connectEnd < 0) // Connection was reused.
        return connectStart();

    return resourceTimeToDocumentMilliseconds(m_timing->connectEnd);
}

double PerformanceResourceTiming::secureConnectionStart() const
{
    if (m_timing->sslStart < 0) // Secure connection not negotiated.
        return 0;

    return resourceTimeToDocumentMilliseconds(m_timing->sslStart);
}

double PerformanceResourceTiming::requestStart() const
{
    return resourceTimeToDocumentMilliseconds(m_timing->sendStart);
}

double PerformanceResourceTiming::responseStart() const
{
    // FIXME: This number isn't exactly correct. See the notes in PerformanceTiming::responseStart().
    return resourceTimeToDocumentMilliseconds(m_timing->receiveHeadersEnd);
}

double PerformanceResourceTiming::responseEnd() const
{
    return monotonicTimeToDocumentMilliseconds(m_finishTime);
}

double PerformanceResourceTiming::monotonicTimeToDocumentMilliseconds(double seconds) const
{
    ASSERT(seconds >= 0.0);
    return m_requestingDocument->loader()->timing()->convertMonotonicTimeToDocumentTime(seconds) * 1000.0;
}

double PerformanceResourceTiming::resourceTimeToDocumentMilliseconds(int deltaMilliseconds) const
{
    return monotonicTimeToDocumentMilliseconds(m_timing->requestTime) + deltaMilliseconds;
}

} // namespace WebCore

#endif // ENABLE(RESOURCE_TIMING)