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Side by Side Diff: third_party/WebKit/Source/platform/network/ResourceLoadTiming.h

Issue 2389973004: reflow comments in platform/{network,peerconnection} (Closed)
Patch Set: Created 4 years, 2 months ago
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1 /* 1 /*
2 * Copyright (C) 2010 Google, Inc. All Rights Reserved. 2 * Copyright (C) 2010 Google, Inc. All Rights Reserved.
3 * 3 *
4 * Redistribution and use in source and binary forms, with or without 4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions 5 * modification, are permitted provided that the following conditions
6 * are met: 6 * are met:
7 * 1. Redistributions of source code must retain the above copyright 7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer. 8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright 9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the 10 * notice, this list of conditions and the following disclaimer in the
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74 double sslStart() const { return m_sslStart; } 74 double sslStart() const { return m_sslStart; }
75 double sslEnd() const { return m_sslEnd; } 75 double sslEnd() const { return m_sslEnd; }
76 double pushStart() const { return m_pushStart; } 76 double pushStart() const { return m_pushStart; }
77 double pushEnd() const { return m_pushEnd; } 77 double pushEnd() const { return m_pushEnd; }
78 78
79 double calculateMillisecondDelta(double) const; 79 double calculateMillisecondDelta(double) const;
80 80
81 private: 81 private:
82 ResourceLoadTiming(); 82 ResourceLoadTiming();
83 83
84 // We want to present a unified timeline to Javascript. Using walltime is prob lematic, because the clock may skew while resources 84 // We want to present a unified timeline to Javascript. Using walltime is
85 // load. To prevent that skew, we record a single reference walltime when root document navigation begins. All other times are 85 // problematic, because the clock may skew while resources load. To prevent
86 // recorded using monotonicallyIncreasingTime(). When a time needs to be prese nted to Javascript, we build a pseudo-walltime 86 // that skew, we record a single reference walltime when root document
87 // using the following equation (m_requestTime as example): 87 // navigation begins. All other times are recorded using
88 // pseudo time = document wall reference + (m_requestTime - document monoton ic reference). 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).
89 93
90 // All monotonicallyIncreasingTime() in seconds 94 // All monotonicallyIncreasingTime() in seconds
91 double m_requestTime; 95 double m_requestTime;
92 double m_proxyStart; 96 double m_proxyStart;
93 double m_proxyEnd; 97 double m_proxyEnd;
94 double m_dnsStart; 98 double m_dnsStart;
95 double m_dnsEnd; 99 double m_dnsEnd;
96 double m_connectStart; 100 double m_connectStart;
97 double m_connectEnd; 101 double m_connectEnd;
98 double m_workerStart; 102 double m_workerStart;
99 double m_workerReady; 103 double m_workerReady;
100 double m_sendStart; 104 double m_sendStart;
101 double m_sendEnd; 105 double m_sendEnd;
102 double m_receiveHeadersEnd; 106 double m_receiveHeadersEnd;
103 double m_sslStart; 107 double m_sslStart;
104 double m_sslEnd; 108 double m_sslEnd;
105 double m_pushStart; 109 double m_pushStart;
106 double m_pushEnd; 110 double m_pushEnd;
107 }; 111 };
108 112
109 } // namespace blink 113 } // namespace blink
110 114
111 #endif 115 #endif
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