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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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 "chrome/browser/prerender/prerender_histograms.h" | 5 #include "chrome/browser/prerender/prerender_histograms.h" |
| 6 | 6 |
| 7 #include <string> | 7 #include <string> |
| 8 | 8 |
| 9 #include "base/metrics/field_trial.h" | 9 #include "base/metrics/field_trial.h" |
| 10 #include "base/metrics/histogram.h" | 10 #include "base/metrics/histogram.h" |
| 11 #include "base/stringprintf.h" | 11 #include "base/stringprintf.h" |
| 12 #include "chrome/browser/autocomplete/network_action_predictor.h" | 12 #include "chrome/browser/predictors/autocomplete_action_predictor.h" |
| 13 #include "chrome/browser/prerender/prerender_field_trial.h" | 13 #include "chrome/browser/prerender/prerender_field_trial.h" |
| 14 #include "chrome/browser/prerender/prerender_manager.h" | 14 #include "chrome/browser/prerender/prerender_manager.h" |
| 15 #include "chrome/browser/prerender/prerender_util.h" | 15 #include "chrome/browser/prerender/prerender_util.h" |
| 16 | 16 |
| 17 using predictors::AutocompleteActionPredictor; |
| 18 |
| 17 namespace prerender { | 19 namespace prerender { |
| 18 | 20 |
| 19 namespace { | 21 namespace { |
| 20 | 22 |
| 21 // Time window for which we will record windowed PLT's from the last | 23 // Time window for which we will record windowed PLT's from the last |
| 22 // observed link rel=prefetch tag. | 24 // observed link rel=prefetch tag. |
| 23 const int kWindowDurationSeconds = 30; | 25 const int kWindowDurationSeconds = 30; |
| 24 | 26 |
| 25 std::string ComposeHistogramName(const std::string& prefix_type, | 27 std::string ComposeHistogramName(const std::string& prefix_type, |
| 26 const std::string& name) { | 28 const std::string& name) { |
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| 41 name); | 43 name); |
| 42 } | 44 } |
| 43 | 45 |
| 44 if (experiment_id != kNoExperiment) | 46 if (experiment_id != kNoExperiment) |
| 45 return ComposeHistogramName("wash", name); | 47 return ComposeHistogramName("wash", name); |
| 46 | 48 |
| 47 switch (origin) { | 49 switch (origin) { |
| 48 case ORIGIN_OMNIBOX: | 50 case ORIGIN_OMNIBOX: |
| 49 return ComposeHistogramName( | 51 return ComposeHistogramName( |
| 50 StringPrintf("omnibox_%.1f", | 52 StringPrintf("omnibox_%.1f", |
| 51 NetworkActionPredictor::get_hit_weight()).c_str(), | 53 AutocompleteActionPredictor::get_hit_weight()).c_str(), |
| 52 name); | 54 name); |
| 53 case ORIGIN_LINK_REL_PRERENDER: | 55 case ORIGIN_LINK_REL_PRERENDER: |
| 54 return ComposeHistogramName("web", name); | 56 return ComposeHistogramName("web", name); |
| 55 case ORIGIN_GWS_PRERENDER: // Handled above. | 57 case ORIGIN_GWS_PRERENDER: // Handled above. |
| 56 default: | 58 default: |
| 57 NOTREACHED(); | 59 NOTREACHED(); |
| 58 break; | 60 break; |
| 59 }; | 61 }; |
| 60 | 62 |
| 61 // Dummy return value to make the compiler happy. | 63 // Dummy return value to make the compiler happy. |
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| 146 // always be in a window in the 30 seconds from each occurrence. | 148 // always be in a window in the 30 seconds from each occurrence. |
| 147 last_prerender_seen_time_ = GetCurrentTimeTicks(); | 149 last_prerender_seen_time_ = GetCurrentTimeTicks(); |
| 148 seen_any_pageload_ = false; | 150 seen_any_pageload_ = false; |
| 149 seen_pageload_started_after_prerender_ = false; | 151 seen_pageload_started_after_prerender_ = false; |
| 150 } | 152 } |
| 151 | 153 |
| 152 void PrerenderHistograms::RecordPrerenderStarted(Origin origin) const { | 154 void PrerenderHistograms::RecordPrerenderStarted(Origin origin) const { |
| 153 if (OriginIsOmnibox(origin)) { | 155 if (OriginIsOmnibox(origin)) { |
| 154 UMA_HISTOGRAM_COUNTS( | 156 UMA_HISTOGRAM_COUNTS( |
| 155 StringPrintf("Prerender.OmniboxPrerenderCount_%.1f%s", | 157 StringPrintf("Prerender.OmniboxPrerenderCount_%.1f%s", |
| 156 NetworkActionPredictor::get_hit_weight(), | 158 AutocompleteActionPredictor::get_hit_weight(), |
| 157 PrerenderManager::GetModeString()).c_str(), | 159 PrerenderManager::GetModeString()).c_str(), |
| 158 1); | 160 1); |
| 159 } | 161 } |
| 160 } | 162 } |
| 161 | 163 |
| 162 void PrerenderHistograms::RecordUsedPrerender(Origin origin) const { | 164 void PrerenderHistograms::RecordUsedPrerender(Origin origin) const { |
| 163 if (OriginIsOmnibox(origin)) { | 165 if (OriginIsOmnibox(origin)) { |
| 164 UMA_HISTOGRAM_COUNTS( | 166 UMA_HISTOGRAM_COUNTS( |
| 165 StringPrintf("Prerender.OmniboxNavigationsUsedPrerenderCount_%.1f%s", | 167 StringPrintf("Prerender.OmniboxNavigationsUsedPrerenderCount_%.1f%s", |
| 166 NetworkActionPredictor::get_hit_weight(), | 168 AutocompleteActionPredictor::get_hit_weight(), |
| 167 PrerenderManager::GetModeString()).c_str(), | 169 PrerenderManager::GetModeString()).c_str(), |
| 168 1); | 170 1); |
| 169 } | 171 } |
| 170 } | 172 } |
| 171 | 173 |
| 172 base::TimeTicks PrerenderHistograms::GetCurrentTimeTicks() const { | 174 base::TimeTicks PrerenderHistograms::GetCurrentTimeTicks() const { |
| 173 return base::TimeTicks::Now(); | 175 return base::TimeTicks::Now(); |
| 174 } | 176 } |
| 175 | 177 |
| 176 // Helper macro for histograms. | 178 // Helper macro for histograms. |
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| 339 return last_origin_; | 341 return last_origin_; |
| 340 } | 342 } |
| 341 | 343 |
| 342 bool PrerenderHistograms::IsOriginExperimentWash() const { | 344 bool PrerenderHistograms::IsOriginExperimentWash() const { |
| 343 if (!WithinWindow()) | 345 if (!WithinWindow()) |
| 344 return false; | 346 return false; |
| 345 return origin_experiment_wash_; | 347 return origin_experiment_wash_; |
| 346 } | 348 } |
| 347 | 349 |
| 348 } // namespace prerender | 350 } // namespace prerender |
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