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1 // Copyright (c) 2013 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 // RapporRecorder holds all Rappors collected in the system, and methods for | |
6 // retrieving the recorded data. | |
7 | |
8 #ifndef COMPONENTS_RAPPOR_RAPPOR_RECORDER_H_ | |
9 #define COMPONENTS_RAPPOR_RAPPOR_RECORDER_H_ | |
10 | |
11 #include <map> | |
12 #include <string> | |
13 #include <vector> | |
14 | |
15 #include "base/basictypes.h" | |
16 #include "base/gtest_prod_util.h" | |
17 #include "base/lazy_instance.h" | |
18 #include "base/synchronization/lock.h" | |
19 #include "components/rappor/rappor.h" | |
20 | |
21 #define RAPPOR_SAMPLES(name, samples) \ | |
22 rappor::g_rappor_recorder.Get().GetRappor(name)->AddSamples(samples); | |
23 | |
24 namespace rappor { | |
25 | |
26 class RapporRecorder { | |
27 public: | |
28 typedef std::vector<Rappor*> Rappors; | |
29 | |
30 // Method for extracting rappors for use by UMA. | |
31 void GetRappors(Rappors* output); | |
32 | |
33 // Clears all recorded rappors. | |
34 void ClearRappors(); | |
35 | |
36 // Find a rappor by name, and create it if it doesn't already exist. It | |
37 // matches the exact name. This method is thread safe. | |
38 Rappor* GetRappor(const std::string& name); | |
jwd
2013/12/17 23:00:25
Can this return a weak_ptr? Similarly, can |Rappor
Steven Holte
2013/12/18 23:38:49
Hid this pointer inside a RecordSamples() method.
| |
39 | |
40 // The constructor just initializes static members. Usually client code should | |
41 // use Initialize to do this. But in test code, you can friend this class and | |
42 // call destructor/constructor to get a clean RapporRecorder. | |
43 RapporRecorder(); | |
44 ~RapporRecorder(); | |
45 | |
46 private: | |
47 // We keep all registered histograms in a map, from name to histogram. | |
48 typedef std::map<std::string, Rappor*> RapporMap; | |
49 | |
50 RapporMap rappors_; | |
51 | |
52 // Lock protects access to above map. | |
53 base::Lock lock_; | |
54 }; | |
55 | |
56 extern base::LazyInstance<RapporRecorder>::Leaky g_rappor_recorder; | |
57 | |
58 } // namespace rappor | |
59 | |
60 #endif // COMPONENTS_RAPPOR_RAPPOR_RECORDER_H_ | |
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