OLD | NEW |
1 // Copyright (c) 2016 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 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 #ifndef COMPONENTS_MEMORY_COORDINATOR_BROWSER_MEMORY_MONITOR_WIN_H_ | 5 #ifndef CONTENT_BROWSER_MEMORY_BROWSER_MEMORY_MONITOR_WIN_H_ |
6 #define COMPONENTS_MEMORY_COORDINATOR_BROWSER_MEMORY_MONITOR_WIN_H_ | 6 #define CONTENT_BROWSER_MEMORY_BROWSER_MEMORY_MONITOR_WIN_H_ |
7 | 7 |
8 #include "components/memory_coordinator/browser/memory_monitor.h" | 8 #include "content/browser/memory/memory_monitor.h" |
9 #include "components/memory_coordinator/common/memory_coordinator_export.h" | |
10 | 9 |
11 namespace base { | 10 namespace base { |
12 struct SystemMemoryInfoKB; | 11 struct SystemMemoryInfoKB; |
13 } // namespace base | 12 } // namespace base |
14 | 13 |
15 namespace memory_coordinator { | 14 namespace content { |
16 | 15 |
17 class MemoryMonitorWinDelegate; | 16 class MemoryMonitorWinDelegate; |
18 | 17 |
19 // A memory monitor for the Windows platform. After much experimentation this | 18 // A memory monitor for the Windows platform. After much experimentation this |
20 // class uses a very simple heuristic to anticipate paging (critical memory | 19 // class uses a very simple heuristic to anticipate paging (critical memory |
21 // pressure). When the amount of memory available dips below a provided | 20 // pressure). When the amount of memory available dips below a provided |
22 // threshold, it is assumed that paging is inevitable. | 21 // threshold, it is assumed that paging is inevitable. |
23 class MEMORY_COORDINATOR_EXPORT MemoryMonitorWin : public MemoryMonitor { | 22 class CONTENT_EXPORT MemoryMonitorWin : public MemoryMonitor { |
24 public: | 23 public: |
25 // Default constants governing the amount of free memory that the memory | 24 // Default constants governing the amount of free memory that the memory |
26 // manager attempts to maintain. | 25 // manager attempts to maintain. |
27 static const int kLargeMemoryThresholdMB; | 26 static const int kLargeMemoryThresholdMB; |
28 static const int kSmallMemoryTargetFreeMB; | 27 static const int kSmallMemoryTargetFreeMB; |
29 static const int kLargeMemoryTargetFreeMB; | 28 static const int kLargeMemoryTargetFreeMB; |
30 | 29 |
31 MemoryMonitorWin(MemoryMonitorWinDelegate* delegate, int target_free_mb); | 30 MemoryMonitorWin(MemoryMonitorWinDelegate* delegate, int target_free_mb); |
32 ~MemoryMonitorWin() override {} | 31 ~MemoryMonitorWin() override {} |
33 | 32 |
(...skipping 23 matching lines...) Loading... |
57 MemoryMonitorWinDelegate* delegate_; | 56 MemoryMonitorWinDelegate* delegate_; |
58 | 57 |
59 // The amount of memory that the memory manager (MM) attempts to keep in a | 58 // The amount of memory that the memory manager (MM) attempts to keep in a |
60 // free state. When less than this amount of physical memory is free, it is | 59 // free state. When less than this amount of physical memory is free, it is |
61 // assumed that the MM will start paging things out. | 60 // assumed that the MM will start paging things out. |
62 int target_free_mb_; | 61 int target_free_mb_; |
63 }; | 62 }; |
64 | 63 |
65 // A delegate that wraps functions used by MemoryMonitorWin. Used as a testing | 64 // A delegate that wraps functions used by MemoryMonitorWin. Used as a testing |
66 // seam. | 65 // seam. |
67 class MEMORY_COORDINATOR_EXPORT MemoryMonitorWinDelegate { | 66 class CONTENT_EXPORT MemoryMonitorWinDelegate { |
68 public: | 67 public: |
69 MemoryMonitorWinDelegate() {} | 68 MemoryMonitorWinDelegate() {} |
70 virtual ~MemoryMonitorWinDelegate() {} | 69 virtual ~MemoryMonitorWinDelegate() {} |
71 | 70 |
72 // Returns system memory information. | 71 // Returns system memory information. |
73 virtual void GetSystemMemoryInfo(base::SystemMemoryInfoKB* mem_info) = 0; | 72 virtual void GetSystemMemoryInfo(base::SystemMemoryInfoKB* mem_info) = 0; |
74 | 73 |
75 private: | 74 private: |
76 DISALLOW_COPY_AND_ASSIGN(MemoryMonitorWinDelegate); | 75 DISALLOW_COPY_AND_ASSIGN(MemoryMonitorWinDelegate); |
77 }; | 76 }; |
78 | 77 |
79 } // namespace memory_coordinator | 78 } // namespace content |
80 | 79 |
81 #endif // COMPONENTS_MEMORY_COORDINATOR_BROWSER_MEMORY_MONITOR_WIN_H_ | 80 #endif // CONTENT_BROWSER_MEMORY_BROWSER_MEMORY_MONITOR_WIN_H_ |
OLD | NEW |