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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 "components/page_load_metrics/browser/metrics_web_contents_observer.h" | 5 #include "components/page_load_metrics/browser/metrics_web_contents_observer.h" |
6 | 6 |
| 7 #include <stddef.h> |
| 8 #include <stdint.h> |
| 9 |
7 #include "base/location.h" | 10 #include "base/location.h" |
8 #include "base/logging.h" | 11 #include "base/logging.h" |
9 #include "base/metrics/histogram.h" | 12 #include "base/metrics/histogram.h" |
10 #include "base/metrics/user_metrics.h" | 13 #include "base/metrics/user_metrics.h" |
11 #include "components/page_load_metrics/browser/page_load_metrics_util.h" | 14 #include "components/page_load_metrics/browser/page_load_metrics_util.h" |
12 #include "components/page_load_metrics/common/page_load_metrics_messages.h" | 15 #include "components/page_load_metrics/common/page_load_metrics_messages.h" |
13 #include "components/page_load_metrics/common/page_load_timing.h" | 16 #include "components/page_load_metrics/common/page_load_timing.h" |
14 #include "components/rappor/rappor_service.h" | 17 #include "components/rappor/rappor_service.h" |
15 #include "components/rappor/rappor_utils.h" | 18 #include "components/rappor/rappor_utils.h" |
16 #include "content/public/browser/browser_thread.h" | 19 #include "content/public/browser/browser_thread.h" |
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95 | 98 |
96 // The number of buckets in the bitfield histogram. These buckets are described | 99 // The number of buckets in the bitfield histogram. These buckets are described |
97 // in rappor.xml in PageLoad.CoarseTiming.NavigationToFirstContentfulPaint. | 100 // in rappor.xml in PageLoad.CoarseTiming.NavigationToFirstContentfulPaint. |
98 // The bucket flag is defined by 1 << bucket_index, and is the bitfield | 101 // The bucket flag is defined by 1 << bucket_index, and is the bitfield |
99 // representing which timing bucket the page load falls into, i.e. 000010 | 102 // representing which timing bucket the page load falls into, i.e. 000010 |
100 // would be the bucket flag showing that the page took between 2 and 4 seconds | 103 // would be the bucket flag showing that the page took between 2 and 4 seconds |
101 // to load. | 104 // to load. |
102 const size_t kNumRapporHistogramBuckets = 6; | 105 const size_t kNumRapporHistogramBuckets = 6; |
103 | 106 |
104 uint64_t RapporHistogramBucketIndex(const base::TimeDelta& time) { | 107 uint64_t RapporHistogramBucketIndex(const base::TimeDelta& time) { |
105 int64 seconds = time.InSeconds(); | 108 int64_t seconds = time.InSeconds(); |
106 if (seconds < 2) | 109 if (seconds < 2) |
107 return 0; | 110 return 0; |
108 if (seconds < 4) | 111 if (seconds < 4) |
109 return 1; | 112 return 1; |
110 if (seconds < 8) | 113 if (seconds < 8) |
111 return 2; | 114 return 2; |
112 if (seconds < 16) | 115 if (seconds < 16) |
113 return 3; | 116 return 3; |
114 if (seconds < 32) | 117 if (seconds < 32) |
115 return 4; | 118 return 4; |
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639 | 642 |
640 if (!committed_load_->UpdateTiming(timing)) { | 643 if (!committed_load_->UpdateTiming(timing)) { |
641 // If the page load tracker cannot update its timing, something is wrong | 644 // If the page load tracker cannot update its timing, something is wrong |
642 // with the IPC (it's from another load, or it's invalid in some other way). | 645 // with the IPC (it's from another load, or it's invalid in some other way). |
643 // We expect this to be a rare occurrence. | 646 // We expect this to be a rare occurrence. |
644 RecordInternalError(ERR_BAD_TIMING_IPC); | 647 RecordInternalError(ERR_BAD_TIMING_IPC); |
645 } | 648 } |
646 } | 649 } |
647 | 650 |
648 } // namespace page_load_metrics | 651 } // namespace page_load_metrics |
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