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Side by Side Diff: Source/core/platform/network/ResourceLoadTiming.h

Issue 15863002: Fix ResourceLoadTiming Resolution Issue 3rd step - remove old fields (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master
Patch Set: Created 7 years, 7 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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76 } 76 }
77 77
78 bool operator!=(const ResourceLoadTiming& other) const 78 bool operator!=(const ResourceLoadTiming& other) const
79 { 79 {
80 return !(*this == other); 80 return !(*this == other);
81 } 81 }
82 82
83 // We want to present a unified timeline to Javascript. Using walltime is pr oblematic, because the clock may skew while resources 83 // We want to present a unified timeline to Javascript. Using walltime is pr oblematic, because the clock may skew while resources
84 // load. To prevent that skew, we record a single reference walltime when ro ot document navigation begins. All other times are 84 // load. To prevent that skew, we record a single reference walltime when ro ot document navigation begins. All other times are
85 // recorded using monotonicallyIncreasingTime(). When a time needs to be pre sented to Javascript, we build a pseudo-walltime 85 // recorded using monotonicallyIncreasingTime(). When a time needs to be pre sented to Javascript, we build a pseudo-walltime
86 #ifdef ENABLE_DOUBLE_RESOURCE_LOAD_TIMING
87 // using the following equation (requestTime as example): 86 // using the following equation (requestTime as example):
88 // pseudo time = document wall reference + (requestTime - document monoton ic reference). 87 // pseudo time = document wall reference + (requestTime - document monoton ic reference).
89 double requestTime; // All monotonicallyIncreasingTime() in seconds 88 double requestTime; // All monotonicallyIncreasingTime() in seconds
90 double proxyStart; 89 double proxyStart;
91 double proxyEnd; 90 double proxyEnd;
92 double dnsStart; 91 double dnsStart;
93 double dnsEnd; 92 double dnsEnd;
94 double connectStart; 93 double connectStart;
95 double connectEnd; 94 double connectEnd;
96 double sendStart; 95 double sendStart;
97 double sendEnd; 96 double sendEnd;
98 double receiveHeadersEnd; 97 double receiveHeadersEnd;
99 double sslStart; 98 double sslStart;
100 double sslEnd; 99 double sslEnd;
101 100
102 double calculateMillisecondDelta(double time) const { return (time - request Time) * 1000; } 101 double calculateMillisecondDelta(double time) const { return (time - request Time) * 1000; }
103 #else
104 // using the following equation:
105 // pseudo time = document wall reference + (resource request time - docume nt monotonic reference) + deltaMilliseconds / 1000.0.
106 double convertResourceLoadTimeToMonotonicTime(int deltaMilliseconds) const;
107
108 double requestTime; // monotonicallyIncreasingTime() when the port started h andling this request.
109 int proxyStart; // The rest of these are millisecond deltas, using monotonic allyIncreasingTime(), from requestTime.
110 int proxyEnd;
111 int dnsStart;
112 int dnsEnd;
113 int connectStart;
114 int connectEnd;
115 int sendStart;
116 int sendEnd;
117 int receiveHeadersEnd;
118 int sslStart;
119 int sslEnd;
120 #endif
121 102
122 private: 103 private:
123 ResourceLoadTiming() 104 ResourceLoadTiming()
124 #ifdef ENABLE_DOUBLE_RESOURCE_LOAD_TIMING
125 : requestTime(0) 105 : requestTime(0)
126 , proxyStart(0) 106 , proxyStart(0)
127 , proxyEnd(0) 107 , proxyEnd(0)
128 , dnsStart(0) 108 , dnsStart(0)
129 , dnsEnd(0) 109 , dnsEnd(0)
130 , connectStart(0) 110 , connectStart(0)
131 , connectEnd(0) 111 , connectEnd(0)
132 , sendStart(0) 112 , sendStart(0)
133 , sendEnd(0) 113 , sendEnd(0)
134 , receiveHeadersEnd(0) 114 , receiveHeadersEnd(0)
135 , sslStart(0) 115 , sslStart(0)
136 , sslEnd(0) 116 , sslEnd(0)
137 #else
138 : requestTime(0)
139 , proxyStart(-1)
140 , proxyEnd(-1)
141 , dnsStart(-1)
142 , dnsEnd(-1)
143 , connectStart(-1)
144 , connectEnd(-1)
145 , sendStart(0)
146 , sendEnd(0)
147 , receiveHeadersEnd(0)
148 , sslStart(-1)
149 , sslEnd(-1)
150 #endif
151 { 117 {
152 } 118 }
153 }; 119 };
154 120
155 } 121 }
156 122
157 #endif 123 #endif
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