| // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef BASE_SYS_INFO_H_ |
| #define BASE_SYS_INFO_H_ |
| #pragma once |
| |
| #include "base/base_export.h" |
| #include "base/basictypes.h" |
| |
| #include <string> |
| |
| class FilePath; |
| |
| namespace base { |
| |
| class BASE_EXPORT SysInfo { |
| public: |
| // Return the number of logical processors/cores on the current machine. |
| static int NumberOfProcessors(); |
| |
| // Return the number of bytes of physical memory on the current machine. |
| static int64 AmountOfPhysicalMemory(); |
| |
| // Return the number of megabytes of physical memory on the current machine. |
| static int AmountOfPhysicalMemoryMB() { |
| return static_cast<int>(AmountOfPhysicalMemory() / 1024 / 1024); |
| } |
| |
| // Return the available disk space in bytes on the volume containing |path|, |
| // or -1 on failure. |
| static int64 AmountOfFreeDiskSpace(const FilePath& path); |
| |
| // Returns the name of the host operating system. |
| static std::string OperatingSystemName(); |
| |
| // Returns the version of the host operating system. |
| static std::string OperatingSystemVersion(); |
| |
| // Retrieves detailed numeric values for the OS version. |
| // TODO(port): Implement a Linux version of this method and enable the |
| // corresponding unit test. |
| // DON'T USE THIS ON THE MAC OR WINDOWS to determine the current OS release |
| // for OS version-specific feature checks and workarounds. If you must use |
| // an OS version check instead of a feature check, use the base::mac::IsOS* |
| // family from base/mac/mac_util.h, or base::win::GetVersion from |
| // base/win/windows_version.h. |
| static void OperatingSystemVersionNumbers(int32* major_version, |
| int32* minor_version, |
| int32* bugfix_version); |
| |
| // Returns the CPU architecture of the system. Exact return value may differ |
| // across platforms. |
| static std::string CPUArchitecture(); |
| |
| // Return the smallest amount of memory (in bytes) which the VM system will |
| // allocate. |
| static size_t VMAllocationGranularity(); |
| |
| #if defined(OS_POSIX) && !defined(OS_MACOSX) |
| // Returns the maximum SysV shared memory segment size. |
| static size_t MaxSharedMemorySize(); |
| #endif |
| |
| #if defined(OS_CHROMEOS) |
| // Returns the name of the version entry we wish to look up in the |
| // Linux Standard Base release information file. |
| static std::string GetLinuxStandardBaseVersionKey(); |
| |
| // Parses /etc/lsb-release to get version information for Google Chrome OS. |
| // Declared here so it can be exposed for unit testing. |
| static void ParseLsbRelease(const std::string& lsb_release, |
| int32* major_version, |
| int32* minor_version, |
| int32* bugfix_version); |
| #endif |
| }; |
| |
| } // namespace base |
| |
| #endif // BASE_SYS_INFO_H_ |