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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 #ifndef CHROME_BROWSER_PERFORMANCE_MONITOR_PERFORMANCE_MONITOR_H_ | 5 #ifndef CHROME_BROWSER_PERFORMANCE_MONITOR_PERFORMANCE_MONITOR_H_ |
6 #define CHROME_BROWSER_PERFORMANCE_MONITOR_PERFORMANCE_MONITOR_H_ | 6 #define CHROME_BROWSER_PERFORMANCE_MONITOR_PERFORMANCE_MONITOR_H_ |
7 | 7 |
8 #include <map> | 8 #include <map> |
9 #include <vector> | 9 #include <vector> |
10 | 10 |
11 #include "base/process/process_handle.h" | 11 #include "base/process/process_handle.h" |
12 #include "base/timer/timer.h" | 12 #include "base/timer/timer.h" |
13 #include "chrome/browser/performance_monitor/process_metrics_history.h" | 13 #include "chrome/browser/performance_monitor/process_metrics_history.h" |
14 | 14 |
| 15 namespace base { |
15 template <typename Type> | 16 template <typename Type> |
16 struct DefaultSingletonTraits; | 17 struct DefaultSingletonTraits; |
| 18 } // namespace base |
17 | 19 |
18 namespace content { | 20 namespace content { |
19 struct ChildProcessData; | 21 struct ChildProcessData; |
20 } | 22 } |
21 | 23 |
22 namespace performance_monitor { | 24 namespace performance_monitor { |
23 | 25 |
24 // PerformanceMonitor is a tool which periodically monitors performance metrics | 26 // PerformanceMonitor is a tool which periodically monitors performance metrics |
25 // for histogram logging and possibly taking action upon noticing serious | 27 // for histogram logging and possibly taking action upon noticing serious |
26 // performance degradation. | 28 // performance degradation. |
27 class PerformanceMonitor { | 29 class PerformanceMonitor { |
28 public: | 30 public: |
29 // Returns the current PerformanceMonitor instance if one exists; otherwise | 31 // Returns the current PerformanceMonitor instance if one exists; otherwise |
30 // constructs a new PerformanceMonitor. | 32 // constructs a new PerformanceMonitor. |
31 static PerformanceMonitor* GetInstance(); | 33 static PerformanceMonitor* GetInstance(); |
32 | 34 |
33 // Start the cycle of metrics gathering. | 35 // Start the cycle of metrics gathering. |
34 void StartGatherCycle(); | 36 void StartGatherCycle(); |
35 | 37 |
36 private: | 38 private: |
37 typedef std::map<base::ProcessHandle, ProcessMetricsHistory> MetricsMap; | 39 typedef std::map<base::ProcessHandle, ProcessMetricsHistory> MetricsMap; |
38 | 40 |
39 friend struct DefaultSingletonTraits<PerformanceMonitor>; | 41 friend struct base::DefaultSingletonTraits<PerformanceMonitor>; |
40 | 42 |
41 PerformanceMonitor(); | 43 PerformanceMonitor(); |
42 virtual ~PerformanceMonitor(); | 44 virtual ~PerformanceMonitor(); |
43 | 45 |
44 // Perform any collections that are done on a timed basis. | 46 // Perform any collections that are done on a timed basis. |
45 void DoTimedCollections(); | 47 void DoTimedCollections(); |
46 | 48 |
47 // Mark the given process as alive in the current update iteration. | 49 // Mark the given process as alive in the current update iteration. |
48 // This means adding an entry to the map of watched processes if it's not | 50 // This means adding an entry to the map of watched processes if it's not |
49 // already present. | 51 // already present. |
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66 | 68 |
67 // The timer to signal PerformanceMonitor to perform its timed collections. | 69 // The timer to signal PerformanceMonitor to perform its timed collections. |
68 base::OneShotTimer<PerformanceMonitor> repeating_timer_; | 70 base::OneShotTimer<PerformanceMonitor> repeating_timer_; |
69 | 71 |
70 DISALLOW_COPY_AND_ASSIGN(PerformanceMonitor); | 72 DISALLOW_COPY_AND_ASSIGN(PerformanceMonitor); |
71 }; | 73 }; |
72 | 74 |
73 } // namespace performance_monitor | 75 } // namespace performance_monitor |
74 | 76 |
75 #endif // CHROME_BROWSER_PERFORMANCE_MONITOR_PERFORMANCE_MONITOR_H_ | 77 #endif // CHROME_BROWSER_PERFORMANCE_MONITOR_PERFORMANCE_MONITOR_H_ |
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