michael@0: // Copyright (c) 2012 The Chromium Authors. All rights reserved.
michael@0: // Use of this source code is governed by a BSD-style license that can be
michael@0: // found in the LICENSE file.
michael@0: 
michael@0: #ifndef BASE_SYS_INFO_H_
michael@0: #define BASE_SYS_INFO_H_
michael@0: 
michael@0: #include <string>
michael@0: 
michael@0: #include "base/base_export.h"
michael@0: #include "base/basictypes.h"
michael@0: #include "base/files/file_path.h"
michael@0: #include "build/build_config.h"
michael@0: 
michael@0: namespace base {
michael@0: 
michael@0: class BASE_EXPORT SysInfo {
michael@0:  public:
michael@0:   // Return the number of logical processors/cores on the current machine.
michael@0:   static int NumberOfProcessors();
michael@0: 
michael@0:   // Return the number of bytes of physical memory on the current machine.
michael@0:   static int64 AmountOfPhysicalMemory();
michael@0: 
michael@0:   // Return the number of bytes of current available physical memory on the
michael@0:   // machine.
michael@0:   static int64 AmountOfAvailablePhysicalMemory();
michael@0: 
michael@0:   // Return the number of megabytes of physical memory on the current machine.
michael@0:   static int AmountOfPhysicalMemoryMB() {
michael@0:     return static_cast<int>(AmountOfPhysicalMemory() / 1024 / 1024);
michael@0:   }
michael@0: 
michael@0:   // Return the available disk space in bytes on the volume containing |path|,
michael@0:   // or -1 on failure.
michael@0:   static int64 AmountOfFreeDiskSpace(const FilePath& path);
michael@0: 
michael@0:   // Returns system uptime in milliseconds.
michael@0:   static int64 Uptime();
michael@0: 
michael@0:   // Returns the name of the host operating system.
michael@0:   static std::string OperatingSystemName();
michael@0: 
michael@0:   // Returns the version of the host operating system.
michael@0:   static std::string OperatingSystemVersion();
michael@0: 
michael@0:   // Retrieves detailed numeric values for the OS version.
michael@0:   // TODO(port): Implement a Linux version of this method and enable the
michael@0:   // corresponding unit test.
michael@0:   // DON'T USE THIS ON THE MAC OR WINDOWS to determine the current OS release
michael@0:   // for OS version-specific feature checks and workarounds. If you must use
michael@0:   // an OS version check instead of a feature check, use the base::mac::IsOS*
michael@0:   // family from base/mac/mac_util.h, or base::win::GetVersion from
michael@0:   // base/win/windows_version.h.
michael@0:   static void OperatingSystemVersionNumbers(int32* major_version,
michael@0:                                             int32* minor_version,
michael@0:                                             int32* bugfix_version);
michael@0: 
michael@0:   // Returns the architecture of the running operating system.
michael@0:   // Exact return value may differ across platforms.
michael@0:   // e.g. a 32-bit x86 kernel on a 64-bit capable CPU will return "x86",
michael@0:   //      whereas a x86-64 kernel on the same CPU will return "x86_64"
michael@0:   static std::string OperatingSystemArchitecture();
michael@0: 
michael@0:   // Avoid using this. Use base/cpu.h to get information about the CPU instead.
michael@0:   // http://crbug.com/148884
michael@0:   // Returns the CPU model name of the system. If it can not be figured out,
michael@0:   // an empty string is returned.
michael@0:   static std::string CPUModelName();
michael@0: 
michael@0:   // Return the smallest amount of memory (in bytes) which the VM system will
michael@0:   // allocate.
michael@0:   static size_t VMAllocationGranularity();
michael@0: 
michael@0: #if defined(OS_POSIX) && !defined(OS_MACOSX)
michael@0:   // Returns the maximum SysV shared memory segment size.
michael@0:   static size_t MaxSharedMemorySize();
michael@0: #endif  // defined(OS_POSIX) && !defined(OS_MACOSX)
michael@0: 
michael@0: #if defined(OS_CHROMEOS)
michael@0:   // Returns the name of the version entry we wish to look up in the
michael@0:   // Linux Standard Base release information file.
michael@0:   static std::string GetLinuxStandardBaseVersionKey();
michael@0: 
michael@0:   // Parses /etc/lsb-release to get version information for Google Chrome OS.
michael@0:   // Declared here so it can be exposed for unit testing.
michael@0:   static void ParseLsbRelease(const std::string& lsb_release,
michael@0:                               int32* major_version,
michael@0:                               int32* minor_version,
michael@0:                               int32* bugfix_version);
michael@0: 
michael@0:   // Returns the path to the lsb-release file.
michael@0:   static FilePath GetLsbReleaseFilePath();
michael@0: #endif  // defined(OS_CHROMEOS)
michael@0: 
michael@0: #if defined(OS_ANDROID)
michael@0:   // Returns the Android build's codename.
michael@0:   static std::string GetAndroidBuildCodename();
michael@0: 
michael@0:   // Returns the Android build ID.
michael@0:   static std::string GetAndroidBuildID();
michael@0: 
michael@0:   // Returns the device's name.
michael@0:   static std::string GetDeviceName();
michael@0: 
michael@0:   static int DalvikHeapSizeMB();
michael@0:   static int DalvikHeapGrowthLimitMB();
michael@0: #endif  // defined(OS_ANDROID)
michael@0: };
michael@0: 
michael@0: }  // namespace base
michael@0: 
michael@0: #endif  // BASE_SYS_INFO_H_