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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 // Histogram is an object that aggregates statistics, and can summarize them in | 5 // Histogram is an object that aggregates statistics, and can summarize them in |
6 // various forms, including ASCII graphical, HTML, and numerically (as a | 6 // various forms, including ASCII graphical, HTML, and numerically (as a |
7 // vector of numbers corresponding to each of the aggregating buckets). | 7 // vector of numbers corresponding to each of the aggregating buckets). |
8 // See header file for details and examples. | 8 // See header file for details and examples. |
9 | 9 |
10 #include "base/metrics/histogram.h" | 10 #include "base/metrics/histogram.h" |
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209 histogram == tentative_histogram_ptr); | 209 histogram == tentative_histogram_ptr); |
210 } | 210 } |
211 | 211 |
212 // Update report on created histograms. | 212 // Update report on created histograms. |
213 ReportHistogramActivity(*histogram, HISTOGRAM_CREATED); | 213 ReportHistogramActivity(*histogram, HISTOGRAM_CREATED); |
214 } else { | 214 } else { |
215 // Update report on lookup histograms. | 215 // Update report on lookup histograms. |
216 ReportHistogramActivity(*histogram, HISTOGRAM_LOOKUP); | 216 ReportHistogramActivity(*histogram, HISTOGRAM_LOOKUP); |
217 } | 217 } |
218 | 218 |
219 DCHECK_EQ(histogram_type_, histogram->GetHistogramType()) << name_; | 219 CHECK_EQ(histogram_type_, histogram->GetHistogramType()) << name_; |
220 if (bucket_count_ != 0 && | 220 if (bucket_count_ != 0 && |
221 !histogram->HasConstructionArguments(minimum_, maximum_, bucket_count_)) { | 221 !histogram->HasConstructionArguments(minimum_, maximum_, bucket_count_)) { |
222 // The construction arguments do not match the existing histogram. This can | 222 // The construction arguments do not match the existing histogram. This can |
223 // come about if an extension updates in the middle of a chrome run and has | 223 // come about if an extension updates in the middle of a chrome run and has |
224 // changed one of them, or simply by bad code within Chrome itself. We | 224 // changed one of them, or simply by bad code within Chrome itself. We |
225 // return NULL here with the expectation that bad code in Chrome will crash | 225 // return NULL here with the expectation that bad code in Chrome will crash |
226 // on dereference, but extension/Pepper APIs will guard against NULL and not | 226 // on dereference, but extension/Pepper APIs will guard against NULL and not |
227 // crash. | 227 // crash. |
228 DLOG(ERROR) << "Histogram " << name_ << " has bad construction arguments"; | 228 DLOG(ERROR) << "Histogram " << name_ << " has bad construction arguments"; |
229 return nullptr; | 229 return nullptr; |
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1178 Sample sample = custom_ranges[i]; | 1178 Sample sample = custom_ranges[i]; |
1179 if (sample < 0 || sample > HistogramBase::kSampleType_MAX - 1) | 1179 if (sample < 0 || sample > HistogramBase::kSampleType_MAX - 1) |
1180 return false; | 1180 return false; |
1181 if (sample != 0) | 1181 if (sample != 0) |
1182 has_valid_range = true; | 1182 has_valid_range = true; |
1183 } | 1183 } |
1184 return has_valid_range; | 1184 return has_valid_range; |
1185 } | 1185 } |
1186 | 1186 |
1187 } // namespace base | 1187 } // namespace base |
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