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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 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 | 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 "components/memory_pressure/direct_memory_pressure_calculator_win.h" | 5 #include "components/memory_pressure/direct_memory_pressure_calculator_win.h" |
6 | 6 |
| 7 #include "base/logging.h" |
| 8 #include "base/process/process_metrics.h" |
| 9 |
7 namespace memory_pressure { | 10 namespace memory_pressure { |
8 | 11 |
9 #if defined(MEMORY_PRESSURE_IS_POLLING) | 12 #if defined(MEMORY_PRESSURE_IS_POLLING) |
10 | 13 |
11 namespace { | 14 namespace { |
12 | 15 |
13 static const int kKBperMB = 1024; | 16 const int kKBperMB = 1024; |
14 | 17 |
15 } // namespace | 18 } // namespace |
16 | 19 |
17 // A system is considered 'high memory' if it has more than 1.5GB of system | 20 // A system is considered 'high memory' if it has more than 1.5GB of system |
18 // memory available for use by the memory manager (not reserved for hardware | 21 // memory available for use by the memory manager (not reserved for hardware |
19 // and drivers). This is a fuzzy version of the ~2GB discussed below. | 22 // and drivers). This is a fuzzy version of the ~2GB discussed below. |
20 const int DirectMemoryPressureCalculator::kLargeMemoryThresholdMb = 1536; | 23 const int DirectMemoryPressureCalculator::kLargeMemoryThresholdMb = 1536; |
21 | 24 |
22 // These are the default thresholds used for systems with < ~2GB of physical | 25 // These are the default thresholds used for systems with < ~2GB of physical |
23 // memory. Such systems have been observed to always maintain ~100MB of | 26 // memory. Such systems have been observed to always maintain ~100MB of |
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104 critical_threshold_mb_ = kLargeMemoryDefaultCriticalThresholdMb; | 107 critical_threshold_mb_ = kLargeMemoryDefaultCriticalThresholdMb; |
105 } else { | 108 } else { |
106 moderate_threshold_mb_ = kSmallMemoryDefaultModerateThresholdMb; | 109 moderate_threshold_mb_ = kSmallMemoryDefaultModerateThresholdMb; |
107 critical_threshold_mb_ = kSmallMemoryDefaultCriticalThresholdMb; | 110 critical_threshold_mb_ = kSmallMemoryDefaultCriticalThresholdMb; |
108 } | 111 } |
109 } | 112 } |
110 | 113 |
111 #endif // defined(MEMORY_PRESSURE_IS_POLLING) | 114 #endif // defined(MEMORY_PRESSURE_IS_POLLING) |
112 | 115 |
113 } // namespace memory_pressure | 116 } // namespace memory_pressure |
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