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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 | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef CHROME_BROWSER_METRICS_DRIVE_METRICS_PROVIDER_H_ | |
6 #define CHROME_BROWSER_METRICS_DRIVE_METRICS_PROVIDER_H_ | |
7 | |
8 #include "base/macros.h" | |
9 #include "base/memory/weak_ptr.h" | |
10 #include "base/threading/thread_checker.h" | |
11 #include "components/metrics/metrics_provider.h" | |
12 | |
13 // Provides metrics about the local drives on a user's computer. Currently only | |
14 // checks to see if they incur a seek-time penalty (e.g. if they're SSDs). | |
15 // | |
16 // Defers gathering metrics until after "rush hour" (startup) so as to not bog | |
17 // down the FILE thread. | |
18 class DriveMetricsProvider : public metrics::MetricsProvider { | |
19 public: | |
20 DriveMetricsProvider(); | |
21 ~DriveMetricsProvider() override; | |
22 | |
23 // metrics::MetricsDataProvider: | |
24 void ProvideSystemProfileMetrics( | |
25 metrics::SystemProfileProto* system_profile_proto) override; | |
26 | |
27 struct SeekPenaltyResponse { | |
Alexei Svitkine (slow)
2015/03/16 16:49:36
Move these to the private section.
Dan Beam
2015/03/16 19:20:23
they were used in the anonymous namespace, so had
| |
28 SeekPenaltyResponse(); | |
29 bool success; | |
30 bool has_seek_penalty; | |
31 }; | |
32 | |
33 struct DriveMetrics { | |
34 SeekPenaltyResponse app_drive; | |
35 SeekPenaltyResponse user_data_drive; | |
36 }; | |
37 | |
38 private: | |
39 // Called when metrics are done being gathered from the FILE thread. | |
40 void GotDriveMetrics(const DriveMetrics& metrics); | |
41 | |
42 // False until |GotDriveMetrics| is called. | |
43 bool got_metrics_; | |
44 DriveMetrics metrics_; | |
45 | |
46 base::ThreadChecker thread_checker_; | |
47 base::WeakPtrFactory<DriveMetricsProvider> weak_ptr_factory_; | |
48 | |
49 DISALLOW_COPY_AND_ASSIGN(DriveMetricsProvider); | |
50 }; | |
51 | |
52 #endif // CHROME_BROWSER_METRICS_DRIVE_METRICS_PROVIDER_H_ | |
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