OLD | NEW |
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 #include "content/browser/power_profiler/power_data_provider_ia_win.h" | 5 #include "content/browser/power_profiler/power_data_provider_ia_win.h" |
6 | 6 |
7 #include "base/logging.h" | 7 #include "base/logging.h" |
8 | 8 |
9 namespace content { | 9 namespace content { |
10 | 10 |
| 11 // Default sampling period, as recommended by Intel Power Gadget. |
| 12 // Section 3.1 of |
| 13 // http://software.intel.com/en-us/blogs/2013/10/03/using-the-intel-power-gadget
-api-on-windows |
| 14 const int kDefaultSamplePeriodMs = 50; |
| 15 |
11 scoped_ptr<PowerDataProvider> PowerDataProvider::Create() { | 16 scoped_ptr<PowerDataProvider> PowerDataProvider::Create() { |
12 scoped_ptr<PowerDataProviderIA> provider(new PowerDataProviderIA()); | 17 scoped_ptr<PowerDataProviderIA> provider(new PowerDataProviderIA()); |
13 if (provider->Initialize()) | 18 if (provider->Initialize()) |
14 return make_scoped_ptr<PowerDataProvider>(provider.release()); | 19 return make_scoped_ptr<PowerDataProvider>(provider.release()); |
15 | 20 |
16 return make_scoped_ptr<PowerDataProvider>(NULL); | 21 return make_scoped_ptr<PowerDataProvider>(NULL); |
17 } | 22 } |
18 | 23 |
19 PowerDataProviderIA::PowerDataProviderIA() | 24 PowerDataProviderIA::PowerDataProviderIA() |
20 : sockets_number_(0), | 25 : sockets_number_(0), |
(...skipping 26 matching lines...) Expand all Loading... |
47 } | 52 } |
48 | 53 |
49 event.type = PowerEvent::SOC_PACKAGE; | 54 event.type = PowerEvent::SOC_PACKAGE; |
50 event.value = package_power; | 55 event.value = package_power; |
51 event.time = base::TimeTicks::Now(); | 56 event.time = base::TimeTicks::Now(); |
52 events.push_back(event); | 57 events.push_back(event); |
53 | 58 |
54 return events; | 59 return events; |
55 } | 60 } |
56 | 61 |
| 62 int64 PowerDataProviderIA::SamplingRate() { |
| 63 return kDefaultSamplePeriodMs; |
| 64 } |
| 65 |
57 bool PowerDataProviderIA::Initialize() { | 66 bool PowerDataProviderIA::Initialize() { |
58 if (is_open_) | 67 if (is_open_) |
59 return true; | 68 return true; |
60 | 69 |
61 if (!energy_lib_.IntelEnergyLibInitialize()) { | 70 if (!energy_lib_.IntelEnergyLibInitialize()) { |
62 LOG(ERROR) << "Power Data Provider initialize failed!"; | 71 LOG(ERROR) << "Power Data Provider initialize failed!"; |
63 return false; | 72 return false; |
64 } | 73 } |
65 | 74 |
66 energy_lib_.GetNumNodes(&sockets_number_); | 75 energy_lib_.GetNumNodes(&sockets_number_); |
(...skipping 14 matching lines...) Expand all Loading... |
81 | 90 |
82 if (package_msr_name.compare(name) == 0) | 91 if (package_msr_name.compare(name) == 0) |
83 power_msr_ids_[PowerEvent::SOC_PACKAGE] = i; | 92 power_msr_ids_[PowerEvent::SOC_PACKAGE] = i; |
84 } | 93 } |
85 | 94 |
86 is_open_ = true; | 95 is_open_ = true; |
87 return true; | 96 return true; |
88 } | 97 } |
89 | 98 |
90 } // namespace content | 99 } // namespace content |
OLD | NEW |