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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 THIRD_PARTY_BLINK_RENDERER_PLATFORM_LOADER_FETCH_RESOURCE_LOAD_TIMING_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_LOADER_FETCH_RESOURCE_LOAD_TIMING_H_
#include "base/memory/scoped_refptr.h"
#include "third_party/blink/renderer/platform/platform_export.h"
#include "third_party/blink/renderer/platform/wtf/ref_counted.h"
#include "third_party/blink/renderer/platform/wtf/time.h"
namespace blink {
class PLATFORM_EXPORT ResourceLoadTiming
: public RefCounted<ResourceLoadTiming> {
public:
static scoped_refptr<ResourceLoadTiming> Create();
scoped_refptr<ResourceLoadTiming> DeepCopy();
bool operator==(const ResourceLoadTiming&) const;
bool operator!=(const ResourceLoadTiming&) const;
void SetDnsStart(TimeTicks);
void SetRequestTime(TimeTicks);
void SetProxyStart(TimeTicks);
void SetProxyEnd(TimeTicks);
void SetDnsEnd(TimeTicks);
void SetConnectStart(TimeTicks);
void SetConnectEnd(TimeTicks);
void SetWorkerStart(TimeTicks);
void SetWorkerReady(TimeTicks);
void SetSendStart(TimeTicks);
void SetSendEnd(TimeTicks);
void SetReceiveHeadersStart(TimeTicks);
void SetReceiveHeadersEnd(TimeTicks);
void SetSslStart(TimeTicks);
void SetSslEnd(TimeTicks);
void SetPushStart(TimeTicks);
void SetPushEnd(TimeTicks);
TimeTicks DnsStart() const { return dns_start_; }
TimeTicks RequestTime() const { return request_time_; }
TimeTicks ProxyStart() const { return proxy_start_; }
TimeTicks ProxyEnd() const { return proxy_end_; }
TimeTicks DnsEnd() const { return dns_end_; }
TimeTicks ConnectStart() const { return connect_start_; }
TimeTicks ConnectEnd() const { return connect_end_; }
TimeTicks WorkerStart() const { return worker_start_; }
TimeTicks WorkerReady() const { return worker_ready_; }
TimeTicks SendStart() const { return send_start_; }
TimeTicks SendEnd() const { return send_end_; }
TimeTicks ReceiveHeadersStart() const { return receive_headers_start_; }
TimeTicks ReceiveHeadersEnd() const { return receive_headers_end_; }
TimeTicks SslStart() const { return ssl_start_; }
TimeTicks SslEnd() const { return ssl_end_; }
TimeTicks PushStart() const { return push_start_; }
TimeTicks PushEnd() const { return push_end_; }
double CalculateMillisecondDelta(TimeTicks) 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 values from monotonicallyIncreasingTime(), in WTF::TimeTicks.
TimeTicks request_time_;
TimeTicks proxy_start_;
TimeTicks proxy_end_;
TimeTicks dns_start_;
TimeTicks dns_end_;
TimeTicks connect_start_;
TimeTicks connect_end_;
TimeTicks worker_start_;
TimeTicks worker_ready_;
TimeTicks send_start_;
TimeTicks send_end_;
TimeTicks receive_headers_start_;
TimeTicks receive_headers_end_;
TimeTicks ssl_start_;
TimeTicks ssl_end_;
TimeTicks push_start_;
TimeTicks push_end_;
};
} // namespace blink
#endif
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