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| 1 /* | |
| 2 * Copyright (C) 2010 Google, Inc. All Rights Reserved. | |
| 3 * | |
| 4 * Redistribution and use in source and binary forms, with or without | |
| 5 * modification, are permitted provided that the following conditions | |
| 6 * are met: | |
| 7 * 1. Redistributions of source code must retain the above copyright | |
| 8 * notice, this list of conditions and the following disclaimer. | |
| 9 * 2. Redistributions in binary form must reproduce the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer in the | |
| 11 * documentation and/or other materials provided with the distribution. | |
| 12 * | |
| 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY | |
| 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR | |
| 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | |
| 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 24 */ | |
| 25 | |
| 26 #ifndef ResourceLoadTiming_h | |
| 27 #define ResourceLoadTiming_h | |
| 28 | |
| 29 #include "platform/PlatformExport.h" | |
| 30 #include "wtf/PassRefPtr.h" | |
| 31 #include "wtf/RefCounted.h" | |
| 32 #include "wtf/RefPtr.h" | |
| 33 | |
| 34 namespace blink { | |
| 35 | |
| 36 class PLATFORM_EXPORT ResourceLoadTiming | |
| 37 : public RefCounted<ResourceLoadTiming> { | |
| 38 public: | |
| 39 static PassRefPtr<ResourceLoadTiming> create(); | |
| 40 | |
| 41 PassRefPtr<ResourceLoadTiming> deepCopy(); | |
| 42 bool operator==(const ResourceLoadTiming&) const; | |
| 43 bool operator!=(const ResourceLoadTiming&) const; | |
| 44 | |
| 45 void setDnsStart(double); | |
| 46 void setRequestTime(double); | |
| 47 void setProxyStart(double); | |
| 48 void setProxyEnd(double); | |
| 49 void setDnsEnd(double); | |
| 50 void setConnectStart(double); | |
| 51 void setConnectEnd(double); | |
| 52 void setWorkerStart(double); | |
| 53 void setWorkerReady(double); | |
| 54 void setSendStart(double); | |
| 55 void setSendEnd(double); | |
| 56 void setReceiveHeadersEnd(double); | |
| 57 void setSslStart(double); | |
| 58 void setSslEnd(double); | |
| 59 void setPushStart(double); | |
| 60 void setPushEnd(double); | |
| 61 | |
| 62 double dnsStart() const { return m_dnsStart; } | |
| 63 double requestTime() const { return m_requestTime; } | |
| 64 double proxyStart() const { return m_proxyStart; } | |
| 65 double proxyEnd() const { return m_proxyEnd; } | |
| 66 double dnsEnd() const { return m_dnsEnd; } | |
| 67 double connectStart() const { return m_connectStart; } | |
| 68 double connectEnd() const { return m_connectEnd; } | |
| 69 double workerStart() const { return m_workerStart; } | |
| 70 double workerReady() const { return m_workerReady; } | |
| 71 double sendStart() const { return m_sendStart; } | |
| 72 double sendEnd() const { return m_sendEnd; } | |
| 73 double receiveHeadersEnd() const { return m_receiveHeadersEnd; } | |
| 74 double sslStart() const { return m_sslStart; } | |
| 75 double sslEnd() const { return m_sslEnd; } | |
| 76 double pushStart() const { return m_pushStart; } | |
| 77 double pushEnd() const { return m_pushEnd; } | |
| 78 | |
| 79 double calculateMillisecondDelta(double) const; | |
| 80 | |
| 81 private: | |
| 82 ResourceLoadTiming(); | |
| 83 | |
| 84 // We want to present a unified timeline to Javascript. Using walltime is | |
| 85 // problematic, because the clock may skew while resources load. To prevent | |
| 86 // that skew, we record a single reference walltime when root document | |
| 87 // navigation begins. All other times are recorded using | |
| 88 // monotonicallyIncreasingTime(). When a time needs to be presented to | |
| 89 // Javascript, we build a pseudo-walltime using the following equation | |
| 90 // (m_requestTime as example): | |
| 91 // pseudo time = document wall reference + | |
| 92 // (m_requestTime - document monotonic reference). | |
| 93 | |
| 94 // All monotonicallyIncreasingTime() in seconds | |
| 95 double m_requestTime; | |
| 96 double m_proxyStart; | |
| 97 double m_proxyEnd; | |
| 98 double m_dnsStart; | |
| 99 double m_dnsEnd; | |
| 100 double m_connectStart; | |
| 101 double m_connectEnd; | |
| 102 double m_workerStart; | |
| 103 double m_workerReady; | |
| 104 double m_sendStart; | |
| 105 double m_sendEnd; | |
| 106 double m_receiveHeadersEnd; | |
| 107 double m_sslStart; | |
| 108 double m_sslEnd; | |
| 109 double m_pushStart; | |
| 110 double m_pushEnd; | |
| 111 }; | |
| 112 | |
| 113 } // namespace blink | |
| 114 | |
| 115 #endif | |
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