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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "core/dom/DocumentParserTiming.h" | 5 #include "core/dom/DocumentParserTiming.h" |
6 | 6 |
7 #include "core/dom/Document.h" | 7 #include "core/dom/Document.h" |
8 #include "core/loader/DocumentLoader.h" | 8 #include "core/loader/DocumentLoader.h" |
9 #include "platform/instrumentation/tracing/TraceEvent.h" | 9 #include "platform/instrumentation/tracing/TraceEvent.h" |
10 | 10 |
11 namespace blink { | 11 namespace blink { |
12 | 12 |
13 static const char kSupplementName[] = "DocumentParserTiming"; | 13 static const char kSupplementNameTiming[] = "DocumentParserTiming"; |
14 | 14 |
15 DocumentParserTiming& DocumentParserTiming::from(Document& document) { | 15 DocumentParserTiming& DocumentParserTiming::from(Document& document) { |
16 DocumentParserTiming* timing = static_cast<DocumentParserTiming*>( | 16 DocumentParserTiming* timing = static_cast<DocumentParserTiming*>( |
17 Supplement<Document>::from(document, kSupplementName)); | 17 Supplement<Document>::from(document, kSupplementNameTiming)); |
18 if (!timing) { | 18 if (!timing) { |
19 timing = new DocumentParserTiming(document); | 19 timing = new DocumentParserTiming(document); |
20 Supplement<Document>::provideTo(document, kSupplementName, timing); | 20 Supplement<Document>::provideTo(document, kSupplementNameTiming, timing); |
21 } | 21 } |
22 return *timing; | 22 return *timing; |
23 } | 23 } |
24 | 24 |
25 void DocumentParserTiming::markParserStart() { | 25 void DocumentParserTiming::markParserStart() { |
26 if (m_parserDetached || m_parserStart > 0.0) | 26 if (m_parserDetached || m_parserStart > 0.0) |
27 return; | 27 return; |
28 DCHECK_EQ(m_parserStop, 0.0); | 28 DCHECK_EQ(m_parserStop, 0.0); |
29 m_parserStart = monotonicallyIncreasingTime(); | 29 m_parserStart = monotonicallyIncreasingTime(); |
30 notifyDocumentParserTimingChanged(); | 30 notifyDocumentParserTimingChanged(); |
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70 | 70 |
71 DocumentParserTiming::DocumentParserTiming(Document& document) | 71 DocumentParserTiming::DocumentParserTiming(Document& document) |
72 : Supplement<Document>(document) {} | 72 : Supplement<Document>(document) {} |
73 | 73 |
74 void DocumentParserTiming::notifyDocumentParserTimingChanged() { | 74 void DocumentParserTiming::notifyDocumentParserTimingChanged() { |
75 if (supplementable()->loader()) | 75 if (supplementable()->loader()) |
76 supplementable()->loader()->didChangePerformanceTiming(); | 76 supplementable()->loader()->didChangePerformanceTiming(); |
77 } | 77 } |
78 | 78 |
79 } // namespace blink | 79 } // namespace blink |
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