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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 #ifndef CHROME_BROWSER_MAC_MAC_STARTUP_PROFILER_H_ | 5 #ifndef CHROME_BROWSER_MAC_MAC_STARTUP_PROFILER_H_ |
| 6 #define CHROME_BROWSER_MAC_MAC_STARTUP_PROFILER_H_ | 6 #define CHROME_BROWSER_MAC_MAC_STARTUP_PROFILER_H_ |
| 7 | 7 |
| 8 #include <map> | 8 #include <map> |
| 9 | 9 |
| 10 #include "base/macros.h" |
| 10 #include "base/memory/singleton.h" | 11 #include "base/memory/singleton.h" |
| 11 #include "base/time/time.h" | 12 #include "base/time/time.h" |
| 12 | 13 |
| 13 // A lightweight profiler of startup performance. Records UMA metrics for the | 14 // A lightweight profiler of startup performance. Records UMA metrics for the |
| 14 // time delta between Chrome's launch and major initialization phases. | 15 // time delta between Chrome's launch and major initialization phases. |
| 15 class MacStartupProfiler { | 16 class MacStartupProfiler { |
| 16 public: | 17 public: |
| 17 // Returns pointer to the singleton instance for the current process. | 18 // Returns pointer to the singleton instance for the current process. |
| 18 static MacStartupProfiler* GetInstance(); | 19 static MacStartupProfiler* GetInstance(); |
| 19 | 20 |
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| 53 // Keeps track of the time at which each initialization phase was reached. | 54 // Keeps track of the time at which each initialization phase was reached. |
| 54 std::map<Location, base::TimeTicks> profiled_ticks_; | 55 std::map<Location, base::TimeTicks> profiled_ticks_; |
| 55 | 56 |
| 56 // Whether UMA metrics have been recorded. Only record UMA metrics once. | 57 // Whether UMA metrics have been recorded. Only record UMA metrics once. |
| 57 bool recorded_metrics_; | 58 bool recorded_metrics_; |
| 58 | 59 |
| 59 DISALLOW_COPY_AND_ASSIGN(MacStartupProfiler); | 60 DISALLOW_COPY_AND_ASSIGN(MacStartupProfiler); |
| 60 }; | 61 }; |
| 61 | 62 |
| 62 #endif // CHROME_BROWSER_MAC_MAC_STARTUP_PROFILER_H_ | 63 #endif // CHROME_BROWSER_MAC_MAC_STARTUP_PROFILER_H_ |
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