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Issue 1738063002: Refactor histogram_persistence to be a class. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: move some parameters up a line Created 4 years, 9 months ago
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1 // Copyright 2014 The Chromium Authors. All rights reserved. 1 // Copyright 2014 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 //------------------------------------------------------------------------------ 5 //------------------------------------------------------------------------------
6 // Description of the life cycle of a instance of MetricsService. 6 // Description of the life cycle of a instance of MetricsService.
7 // 7 //
8 // OVERVIEW 8 // OVERVIEW
9 // 9 //
10 // A MetricsService instance is typically created at application startup. It is 10 // A MetricsService instance is typically created at application startup. It is
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126 126
127 #include <stddef.h> 127 #include <stddef.h>
128 #include <algorithm> 128 #include <algorithm>
129 #include <utility> 129 #include <utility>
130 130
131 #include "base/bind.h" 131 #include "base/bind.h"
132 #include "base/callback.h" 132 #include "base/callback.h"
133 #include "base/location.h" 133 #include "base/location.h"
134 #include "base/metrics/histogram_base.h" 134 #include "base/metrics/histogram_base.h"
135 #include "base/metrics/histogram_macros.h" 135 #include "base/metrics/histogram_macros.h"
136 #include "base/metrics/histogram_persistence.h"
137 #include "base/metrics/histogram_samples.h" 136 #include "base/metrics/histogram_samples.h"
137 #include "base/metrics/persistent_histogram_allocator.h"
138 #include "base/metrics/sparse_histogram.h" 138 #include "base/metrics/sparse_histogram.h"
139 #include "base/metrics/statistics_recorder.h" 139 #include "base/metrics/statistics_recorder.h"
140 #include "base/rand_util.h" 140 #include "base/rand_util.h"
141 #include "base/single_thread_task_runner.h" 141 #include "base/single_thread_task_runner.h"
142 #include "base/strings/string_number_conversions.h" 142 #include "base/strings/string_number_conversions.h"
143 #include "base/strings/utf_string_conversions.h" 143 #include "base/strings/utf_string_conversions.h"
144 #include "base/thread_task_runner_handle.h" 144 #include "base/thread_task_runner_handle.h"
145 #include "base/threading/platform_thread.h" 145 #include "base/threading/platform_thread.h"
146 #include "base/threading/thread.h" 146 #include "base/threading/thread.h"
147 #include "base/threading/thread_restrictions.h" 147 #include "base/threading/thread_restrictions.h"
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739 // can stop recording logs that are too big much sooner. 739 // can stop recording logs that are too big much sooner.
740 if (log_manager_.current_log()->num_events() > kEventLimit) { 740 if (log_manager_.current_log()->num_events() > kEventLimit) {
741 UMA_HISTOGRAM_COUNTS("UMA.Discarded Log Events", 741 UMA_HISTOGRAM_COUNTS("UMA.Discarded Log Events",
742 log_manager_.current_log()->num_events()); 742 log_manager_.current_log()->num_events());
743 log_manager_.DiscardCurrentLog(); 743 log_manager_.DiscardCurrentLog();
744 OpenNewLog(); // Start trivial log to hold our histograms. 744 OpenNewLog(); // Start trivial log to hold our histograms.
745 } 745 }
746 746
747 // If a persistent allocator is in use, update its internal histograms (such 747 // If a persistent allocator is in use, update its internal histograms (such
748 // as how much memory is being used) before reporting. 748 // as how much memory is being used) before reporting.
749 base::PersistentMemoryAllocator* allocator = 749 base::PersistentHistogramAllocator* allocator =
750 base::GetPersistentHistogramMemoryAllocator(); 750 base::PersistentHistogramAllocator::GetGlobalAllocator();
751 if (allocator) 751 if (allocator)
752 allocator->UpdateTrackingHistograms(); 752 allocator->UpdateTrackingHistograms();
753 753
754 // Put incremental data (histogram deltas, and realtime stats deltas) at the 754 // Put incremental data (histogram deltas, and realtime stats deltas) at the
755 // end of all log transmissions (initial log handles this separately). 755 // end of all log transmissions (initial log handles this separately).
756 // RecordIncrementalStabilityElements only exists on the derived 756 // RecordIncrementalStabilityElements only exists on the derived
757 // MetricsLog class. 757 // MetricsLog class.
758 MetricsLog* current_log = log_manager_.current_log(); 758 MetricsLog* current_log = log_manager_.current_log();
759 DCHECK(current_log); 759 DCHECK(current_log);
760 RecordCurrentEnvironment(current_log); 760 RecordCurrentEnvironment(current_log);
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1161 base::Time::Now().ToTimeT()); 1161 base::Time::Now().ToTimeT());
1162 } 1162 }
1163 1163
1164 void MetricsService::SkipAndDiscardUpload() { 1164 void MetricsService::SkipAndDiscardUpload() {
1165 log_manager_.DiscardStagedLog(); 1165 log_manager_.DiscardStagedLog();
1166 scheduler_->UploadCancelled(); 1166 scheduler_->UploadCancelled();
1167 log_upload_in_progress_ = false; 1167 log_upload_in_progress_ = false;
1168 } 1168 }
1169 1169
1170 } // namespace metrics 1170 } // namespace metrics
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