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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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 BASE_SYS_INFO_H_ | 5 #ifndef BASE_SYS_INFO_H_ |
6 #define BASE_SYS_INFO_H_ | 6 #define BASE_SYS_INFO_H_ |
7 | 7 |
8 #include <map> | 8 #include <map> |
9 #include <string> | 9 #include <string> |
10 | 10 |
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41 // Return the number of megabytes of available virtual memory, or zero if it | 41 // Return the number of megabytes of available virtual memory, or zero if it |
42 // is unlimited. | 42 // is unlimited. |
43 static int AmountOfVirtualMemoryMB() { | 43 static int AmountOfVirtualMemoryMB() { |
44 return static_cast<int>(AmountOfVirtualMemory() / 1024 / 1024); | 44 return static_cast<int>(AmountOfVirtualMemory() / 1024 / 1024); |
45 } | 45 } |
46 | 46 |
47 // Return the available disk space in bytes on the volume containing |path|, | 47 // Return the available disk space in bytes on the volume containing |path|, |
48 // or -1 on failure. | 48 // or -1 on failure. |
49 static int64 AmountOfFreeDiskSpace(const FilePath& path); | 49 static int64 AmountOfFreeDiskSpace(const FilePath& path); |
50 | 50 |
| 51 // Determine whether the device that services |path| has a seek penalty. |
| 52 // Returns false if it couldn't be determined (e.g., |path| doesn't exist). |
| 53 static bool HasSeekPenalty(const FilePath& path, bool* has_seek_penalty); |
| 54 |
51 // Returns system uptime in milliseconds. | 55 // Returns system uptime in milliseconds. |
52 static int64 Uptime(); | 56 static int64 Uptime(); |
53 | 57 |
54 // Returns a descriptive string for the current machine model or an empty | 58 // Returns a descriptive string for the current machine model or an empty |
55 // string if machime model is unknown or an error occured. | 59 // string if machime model is unknown or an error occured. |
56 // e.g. MacPro1,1 on Mac. | 60 // e.g. MacPro1,1 on Mac. |
57 // Only implemented on OS X, will return an empty string on other platforms. | 61 // Only implemented on OS X, will return an empty string on other platforms. |
58 static std::string HardwareModelName(); | 62 static std::string HardwareModelName(); |
59 | 63 |
60 // Returns the name of the host operating system. | 64 // Returns the name of the host operating system. |
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138 | 142 |
139 // Returns true if this is a low-end device. | 143 // Returns true if this is a low-end device. |
140 // Low-end device refers to devices having less than 512M memory in the | 144 // Low-end device refers to devices having less than 512M memory in the |
141 // current implementation. | 145 // current implementation. |
142 static bool IsLowEndDevice(); | 146 static bool IsLowEndDevice(); |
143 }; | 147 }; |
144 | 148 |
145 } // namespace base | 149 } // namespace base |
146 | 150 |
147 #endif // BASE_SYS_INFO_H_ | 151 #endif // BASE_SYS_INFO_H_ |
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