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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 <stdint.h> |
| 9 |
8 #include <map> | 10 #include <map> |
9 #include <string> | 11 #include <string> |
10 | 12 |
11 #include "base/base_export.h" | 13 #include "base/base_export.h" |
12 #include "base/basictypes.h" | |
13 #include "base/files/file_path.h" | 14 #include "base/files/file_path.h" |
14 #include "base/time/time.h" | 15 #include "base/time/time.h" |
15 #include "build/build_config.h" | 16 #include "build/build_config.h" |
16 | 17 |
17 namespace base { | 18 namespace base { |
18 | 19 |
19 class BASE_EXPORT SysInfo { | 20 class BASE_EXPORT SysInfo { |
20 public: | 21 public: |
21 // Return the number of logical processors/cores on the current machine. | 22 // Return the number of logical processors/cores on the current machine. |
22 static int NumberOfProcessors(); | 23 static int NumberOfProcessors(); |
23 | 24 |
24 // Return the number of bytes of physical memory on the current machine. | 25 // Return the number of bytes of physical memory on the current machine. |
25 static int64 AmountOfPhysicalMemory(); | 26 static int64_t AmountOfPhysicalMemory(); |
26 | 27 |
27 // Return the number of bytes of current available physical memory on the | 28 // Return the number of bytes of current available physical memory on the |
28 // machine. | 29 // machine. |
29 static int64 AmountOfAvailablePhysicalMemory(); | 30 static int64_t AmountOfAvailablePhysicalMemory(); |
30 | 31 |
31 // Return the number of bytes of virtual memory of this process. A return | 32 // Return the number of bytes of virtual memory of this process. A return |
32 // value of zero means that there is no limit on the available virtual | 33 // value of zero means that there is no limit on the available virtual |
33 // memory. | 34 // memory. |
34 static int64 AmountOfVirtualMemory(); | 35 static int64_t AmountOfVirtualMemory(); |
35 | 36 |
36 // Return the number of megabytes of physical memory on the current machine. | 37 // Return the number of megabytes of physical memory on the current machine. |
37 static int AmountOfPhysicalMemoryMB() { | 38 static int AmountOfPhysicalMemoryMB() { |
38 return static_cast<int>(AmountOfPhysicalMemory() / 1024 / 1024); | 39 return static_cast<int>(AmountOfPhysicalMemory() / 1024 / 1024); |
39 } | 40 } |
40 | 41 |
41 // Return the number of megabytes of available virtual memory, or zero if it | 42 // Return the number of megabytes of available virtual memory, or zero if it |
42 // is unlimited. | 43 // is unlimited. |
43 static int AmountOfVirtualMemoryMB() { | 44 static int AmountOfVirtualMemoryMB() { |
44 return static_cast<int>(AmountOfVirtualMemory() / 1024 / 1024); | 45 return static_cast<int>(AmountOfVirtualMemory() / 1024 / 1024); |
45 } | 46 } |
46 | 47 |
47 // Return the available disk space in bytes on the volume containing |path|, | 48 // Return the available disk space in bytes on the volume containing |path|, |
48 // or -1 on failure. | 49 // or -1 on failure. |
49 static int64 AmountOfFreeDiskSpace(const FilePath& path); | 50 static int64_t AmountOfFreeDiskSpace(const FilePath& path); |
50 | 51 |
51 // Returns system uptime. | 52 // Returns system uptime. |
52 static TimeDelta Uptime(); | 53 static TimeDelta Uptime(); |
53 | 54 |
54 // Returns a descriptive string for the current machine model or an empty | 55 // Returns a descriptive string for the current machine model or an empty |
55 // string if the machine model is unknown or an error occured. | 56 // string if the machine model is unknown or an error occured. |
56 // e.g. "MacPro1,1" on Mac, or "Nexus 5" on Android. Only implemented on OS X, | 57 // e.g. "MacPro1,1" on Mac, or "Nexus 5" on Android. Only implemented on OS X, |
57 // Android, and Chrome OS. This returns an empty string on other platforms. | 58 // Android, and Chrome OS. This returns an empty string on other platforms. |
58 static std::string HardwareModelName(); | 59 static std::string HardwareModelName(); |
59 | 60 |
60 // Returns the name of the host operating system. | 61 // Returns the name of the host operating system. |
61 static std::string OperatingSystemName(); | 62 static std::string OperatingSystemName(); |
62 | 63 |
63 // Returns the version of the host operating system. | 64 // Returns the version of the host operating system. |
64 static std::string OperatingSystemVersion(); | 65 static std::string OperatingSystemVersion(); |
65 | 66 |
66 // Retrieves detailed numeric values for the OS version. | 67 // Retrieves detailed numeric values for the OS version. |
67 // TODO(port): Implement a Linux version of this method and enable the | 68 // TODO(port): Implement a Linux version of this method and enable the |
68 // corresponding unit test. | 69 // corresponding unit test. |
69 // DON'T USE THIS ON THE MAC OR WINDOWS to determine the current OS release | 70 // DON'T USE THIS ON THE MAC OR WINDOWS to determine the current OS release |
70 // for OS version-specific feature checks and workarounds. If you must use | 71 // for OS version-specific feature checks and workarounds. If you must use |
71 // an OS version check instead of a feature check, use the base::mac::IsOS* | 72 // an OS version check instead of a feature check, use the base::mac::IsOS* |
72 // family from base/mac/mac_util.h, or base::win::GetVersion from | 73 // family from base/mac/mac_util.h, or base::win::GetVersion from |
73 // base/win/windows_version.h. | 74 // base/win/windows_version.h. |
74 static void OperatingSystemVersionNumbers(int32* major_version, | 75 static void OperatingSystemVersionNumbers(int32_t* major_version, |
75 int32* minor_version, | 76 int32_t* minor_version, |
76 int32* bugfix_version); | 77 int32_t* bugfix_version); |
77 | 78 |
78 // Returns the architecture of the running operating system. | 79 // Returns the architecture of the running operating system. |
79 // Exact return value may differ across platforms. | 80 // Exact return value may differ across platforms. |
80 // e.g. a 32-bit x86 kernel on a 64-bit capable CPU will return "x86", | 81 // e.g. a 32-bit x86 kernel on a 64-bit capable CPU will return "x86", |
81 // whereas a x86-64 kernel on the same CPU will return "x86_64" | 82 // whereas a x86-64 kernel on the same CPU will return "x86_64" |
82 static std::string OperatingSystemArchitecture(); | 83 static std::string OperatingSystemArchitecture(); |
83 | 84 |
84 // Avoid using this. Use base/cpu.h to get information about the CPU instead. | 85 // Avoid using this. Use base/cpu.h to get information about the CPU instead. |
85 // http://crbug.com/148884 | 86 // http://crbug.com/148884 |
86 // Returns the CPU model name of the system. If it can not be figured out, | 87 // Returns the CPU model name of the system. If it can not be figured out, |
87 // an empty string is returned. | 88 // an empty string is returned. |
88 static std::string CPUModelName(); | 89 static std::string CPUModelName(); |
89 | 90 |
90 // Return the smallest amount of memory (in bytes) which the VM system will | 91 // Return the smallest amount of memory (in bytes) which the VM system will |
91 // allocate. | 92 // allocate. |
92 static size_t VMAllocationGranularity(); | 93 static size_t VMAllocationGranularity(); |
93 | 94 |
94 #if defined(OS_POSIX) && !defined(OS_MACOSX) | 95 #if defined(OS_POSIX) && !defined(OS_MACOSX) |
95 // Returns the maximum SysV shared memory segment size, or zero if there is no | 96 // Returns the maximum SysV shared memory segment size, or zero if there is no |
96 // limit. | 97 // limit. |
97 static uint64 MaxSharedMemorySize(); | 98 static uint64_t MaxSharedMemorySize(); |
98 #endif // defined(OS_POSIX) && !defined(OS_MACOSX) | 99 #endif // defined(OS_POSIX) && !defined(OS_MACOSX) |
99 | 100 |
100 #if defined(OS_CHROMEOS) | 101 #if defined(OS_CHROMEOS) |
101 typedef std::map<std::string, std::string> LsbReleaseMap; | 102 typedef std::map<std::string, std::string> LsbReleaseMap; |
102 | 103 |
103 // Returns the contents of /etc/lsb-release as a map. | 104 // Returns the contents of /etc/lsb-release as a map. |
104 static const LsbReleaseMap& GetLsbReleaseMap(); | 105 static const LsbReleaseMap& GetLsbReleaseMap(); |
105 | 106 |
106 // If |key| is present in the LsbReleaseMap, sets |value| and returns true. | 107 // If |key| is present in the LsbReleaseMap, sets |value| and returns true. |
107 static bool GetLsbReleaseValue(const std::string& key, std::string* value); | 108 static bool GetLsbReleaseValue(const std::string& key, std::string* value); |
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135 | 136 |
136 // Returns true if this is a low-end device. | 137 // Returns true if this is a low-end device. |
137 // Low-end device refers to devices having less than 512M memory in the | 138 // Low-end device refers to devices having less than 512M memory in the |
138 // current implementation. | 139 // current implementation. |
139 static bool IsLowEndDevice(); | 140 static bool IsLowEndDevice(); |
140 }; | 141 }; |
141 | 142 |
142 } // namespace base | 143 } // namespace base |
143 | 144 |
144 #endif // BASE_SYS_INFO_H_ | 145 #endif // BASE_SYS_INFO_H_ |
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