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 3 // found in the LICENSE file. 4 5 #ifndef BASE_SYS_INFO_H_ 6 #define BASE_SYS_INFO_H_ 7 8 #include <map> 9 #include <string> 10 11 #include "base/base_export.h" 12 #include "base/basictypes.h" 13 #include "base/files/file_path.h" 14 #include "base/time/time.h" 15 #include "build/build_config.h" 16 17 namespace base { 18 19 class BASE_EXPORT SysInfo { 20 public: 21 // Return the number of logical processors/cores on the current machine. 22 static int NumberOfProcessors(); 23 24 // Return the number of bytes of physical memory on the current machine. 25 static int64 AmountOfPhysicalMemory(); 26 27 // Return the number of bytes of current available physical memory on the 28 // machine. 29 static int64 AmountOfAvailablePhysicalMemory(); 30 31 // Return the number of megabytes of physical memory on the current machine. 32 static int AmountOfPhysicalMemoryMB() { 33 return static_cast<int>(AmountOfPhysicalMemory() / 1024 / 1024); 34 } 35 36 // Return the available disk space in bytes on the volume containing |path|, 37 // or -1 on failure. 38 static int64 AmountOfFreeDiskSpace(const FilePath& path); 39 40 // Returns system uptime in milliseconds. 41 static int64 Uptime(); 42 43 // Returns the name of the host operating system. 44 static std::string OperatingSystemName(); 45 46 // Returns the version of the host operating system. 47 static std::string OperatingSystemVersion(); 48 49 // Retrieves detailed numeric values for the OS version. 50 // TODO(port): Implement a Linux version of this method and enable the 51 // corresponding unit test. 52 // DON'T USE THIS ON THE MAC OR WINDOWS to determine the current OS release 53 // for OS version-specific feature checks and workarounds. If you must use 54 // an OS version check instead of a feature check, use the base::mac::IsOS* 55 // family from base/mac/mac_util.h, or base::win::GetVersion from 56 // base/win/windows_version.h. 57 static void OperatingSystemVersionNumbers(int32* major_version, 58 int32* minor_version, 59 int32* bugfix_version); 60 61 // Returns the architecture of the running operating system. 62 // Exact return value may differ across platforms. 63 // e.g. a 32-bit x86 kernel on a 64-bit capable CPU will return "x86", 64 // whereas a x86-64 kernel on the same CPU will return "x86_64" 65 static std::string OperatingSystemArchitecture(); 66 67 // Avoid using this. Use base/cpu.h to get information about the CPU instead. 68 // http://crbug.com/148884 69 // Returns the CPU model name of the system. If it can not be figured out, 70 // an empty string is returned. 71 static std::string CPUModelName(); 72 73 // Return the smallest amount of memory (in bytes) which the VM system will 74 // allocate. 75 static size_t VMAllocationGranularity(); 76 77 #if defined(OS_POSIX) && !defined(OS_MACOSX) 78 // Returns the maximum SysV shared memory segment size, or zero if there is no 79 // limit. 80 static size_t MaxSharedMemorySize(); 81 #endif // defined(OS_POSIX) && !defined(OS_MACOSX) 82 83 #if defined(OS_CHROMEOS) 84 typedef std::map<std::string, std::string> LsbReleaseMap; 85 86 // Returns the contents of /etc/lsb-release as a map. 87 static const LsbReleaseMap& GetLsbReleaseMap(); 88 89 // If |key| is present in the LsbReleaseMap, sets |value| and returns true. 90 static bool GetLsbReleaseValue(const std::string& key, std::string* value); 91 92 // Convenience function for GetLsbReleaseValue("CHROMEOS_RELEASE_BOARD",...). 93 // Returns "unknown" if CHROMEOS_RELEASE_BOARD is not set. 94 static std::string GetLsbReleaseBoard(); 95 96 // Returns the creation time of /etc/lsb-release. (Used to get the date and 97 // time of the Chrome OS build). 98 static Time GetLsbReleaseTime(); 99 100 // Returns true when actually running in a Chrome OS environment. 101 static bool IsRunningOnChromeOS(); 102 103 // Test method to force re-parsing of lsb-release. 104 static void SetChromeOSVersionInfoForTest(const std::string& lsb_release, 105 const Time& lsb_release_time); 106 #endif // defined(OS_CHROMEOS) 107 108 #if defined(OS_ANDROID) 109 // Returns the Android build's codename. 110 static std::string GetAndroidBuildCodename(); 111 112 // Returns the Android build ID. 113 static std::string GetAndroidBuildID(); 114 115 // Returns the device's name. 116 static std::string GetDeviceName(); 117 118 static int DalvikHeapSizeMB(); 119 static int DalvikHeapGrowthLimitMB(); 120 #endif // defined(OS_ANDROID) 121 }; 122 123 } // namespace base 124 125 #endif // BASE_SYS_INFO_H_ 126
