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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 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_linux.h" | 5 #include "components/memory_pressure/direct_memory_pressure_calculator_linux.h" |
6 | 6 |
7 #include "base/process/process_metrics.h" | 7 #include "base/process/process_metrics.h" |
8 #include "base/sys_info.h" | 8 #include "base/sys_info.h" |
9 | 9 |
10 namespace memory_pressure { | 10 namespace memory_pressure { |
11 | 11 |
12 namespace { | 12 namespace { |
13 | 13 |
14 static const int kKiBperMiB = 1024; | 14 const int kKiBperMiB = 1024; |
15 | 15 |
16 int GetAvailableSystemMemoryMiB(const base::SystemMemoryInfoKB* mem_info) { | 16 int GetAvailableSystemMemoryMiB(const base::SystemMemoryInfoKB* mem_info) { |
17 // How much system memory is actively available for use right now, in MBs. | 17 // How much system memory is actively available for use right now, in MBs. |
18 return (mem_info->available | 18 return (mem_info->available |
19 ? mem_info->available | 19 ? mem_info->available |
20 : (mem_info->free + mem_info->buffers + mem_info->cached)) / | 20 : (mem_info->free + mem_info->buffers + mem_info->cached)) / |
21 kKiBperMiB; | 21 kKiBperMiB; |
22 } | 22 } |
23 | 23 |
24 } // namespace | 24 } // namespace |
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71 if (!GetSystemMemoryInfo(&mem_info)) | 71 if (!GetSystemMemoryInfo(&mem_info)) |
72 return; | 72 return; |
73 | 73 |
74 moderate_threshold_mb_ = | 74 moderate_threshold_mb_ = |
75 mem_info.total * (100 - kDefaultModerateThresholdPc) / 100 / kKiBperMiB; | 75 mem_info.total * (100 - kDefaultModerateThresholdPc) / 100 / kKiBperMiB; |
76 critical_threshold_mb_ = | 76 critical_threshold_mb_ = |
77 mem_info.total * (100 - kDefaultCriticalThresholdPc) / 100 / kKiBperMiB; | 77 mem_info.total * (100 - kDefaultCriticalThresholdPc) / 100 / kKiBperMiB; |
78 } | 78 } |
79 | 79 |
80 } // namespace memory_pressure | 80 } // namespace memory_pressure |
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