| /* |
| * 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 "wtf/PassRefPtr.h" |
| #include "wtf/RefCounted.h" |
| #include "wtf/RefPtr.h" |
| |
| namespace WebCore { |
| |
| class DocumentLoadTiming; |
| |
| class ResourceLoadTiming : public RefCounted<ResourceLoadTiming> { |
| public: |
| static PassRefPtr<ResourceLoadTiming> create() |
| { |
| return adoptRef(new ResourceLoadTiming); |
| } |
| |
| PassRefPtr<ResourceLoadTiming> deepCopy() |
| { |
| RefPtr<ResourceLoadTiming> timing = create(); |
| timing->requestTime = requestTime; |
| timing->proxyStart = proxyStart; |
| timing->proxyEnd = proxyEnd; |
| timing->dnsStart = dnsStart; |
| timing->dnsEnd = dnsEnd; |
| timing->connectStart = connectStart; |
| timing->connectEnd = connectEnd; |
| timing->sendStart = sendStart; |
| timing->sendEnd = sendEnd; |
| timing->receiveHeadersEnd = receiveHeadersEnd; |
| timing->sslStart = sslStart; |
| timing->sslEnd = sslEnd; |
| return timing.release(); |
| } |
| |
| bool operator==(const ResourceLoadTiming& other) const |
| { |
| return requestTime == other.requestTime |
| && proxyStart == other.proxyStart |
| && proxyEnd == other.proxyEnd |
| && dnsStart == other.dnsStart |
| && dnsEnd == other.dnsEnd |
| && connectStart == other.connectStart |
| && connectEnd == other.connectEnd |
| && sendStart == other.sendStart |
| && sendEnd == other.sendEnd |
| && receiveHeadersEnd == other.receiveHeadersEnd |
| && sslStart == other.sslStart |
| && sslEnd == other.sslEnd; |
| } |
| |
| bool operator!=(const ResourceLoadTiming& other) const |
| { |
| return !(*this == other); |
| } |
| |
| // 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 (requestTime as example): |
| // pseudo time = document wall reference + (requestTime - document monotonic reference). |
| double requestTime; // All monotonicallyIncreasingTime() in seconds |
| double proxyStart; |
| double proxyEnd; |
| double dnsStart; |
| double dnsEnd; |
| double connectStart; |
| double connectEnd; |
| double sendStart; |
| double sendEnd; |
| double receiveHeadersEnd; |
| double sslStart; |
| double sslEnd; |
| |
| double calculateMillisecondDelta(double time) const { return time ? (time - requestTime) * 1000 : -1; } |
| |
| private: |
| ResourceLoadTiming() |
| : requestTime(0) |
| , proxyStart(0) |
| , proxyEnd(0) |
| , dnsStart(0) |
| , dnsEnd(0) |
| , connectStart(0) |
| , connectEnd(0) |
| , sendStart(0) |
| , sendEnd(0) |
| , receiveHeadersEnd(0) |
| , sslStart(0) |
| , sslEnd(0) |
| { |
| } |
| }; |
| |
| } |
| |
| #endif |