ipc/chromium/src/base/sys_info.h@6474c204b198 (annotated)
ipc/chromium/src/base/sys_info.h
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | // Copyright (c) 2008 The Chromium Authors. All rights reserved. |
| michael@0 | 2 | // Use of this source code is governed by a BSD-style license that can be |
| michael@0 | 3 | // found in the LICENSE file. |
| michael@0 | 4 | |
| michael@0 | 5 | #ifndef BASE_SYS_INFO_H_ |
| michael@0 | 6 | #define BASE_SYS_INFO_H_ |
| michael@0 | 7 | |
| michael@0 | 8 | #include "base/basictypes.h" |
| michael@0 | 9 | |
| michael@0 | 10 | #include <string> |
| michael@0 | 11 | |
| michael@0 | 12 | namespace base { |
| michael@0 | 13 | |
| michael@0 | 14 | class SysInfo { |
| michael@0 | 15 | public: |
| michael@0 | 16 | // Return the number of logical processors/cores on the current machine. |
| michael@0 | 17 | // WARNING: On POSIX, this method uses static variables and is not threadsafe |
| michael@0 | 18 | // until it's been initialized by being called once without a race. |
| michael@0 | 19 | static int NumberOfProcessors(); |
| michael@0 | 20 | |
| michael@0 | 21 | // Return the number of bytes of physical memory on the current machine. |
| michael@0 | 22 | static int64_t AmountOfPhysicalMemory(); |
| michael@0 | 23 | |
| michael@0 | 24 | // Return the number of megabytes of physical memory on the current machine. |
| michael@0 | 25 | static int AmountOfPhysicalMemoryMB() { |
| michael@0 | 26 | return static_cast<int>(AmountOfPhysicalMemory() / 1024 / 1024); |
| michael@0 | 27 | } |
| michael@0 | 28 | |
| michael@0 | 29 | // Return the available disk space in bytes on the volume containing |path|, |
| michael@0 | 30 | // or -1 on failure. |
| michael@0 | 31 | static int64_t AmountOfFreeDiskSpace(const std::wstring& path); |
| michael@0 | 32 | |
| michael@0 | 33 | // Return true if the given environment variable is defined. |
| michael@0 | 34 | // TODO: find a better place for HasEnvVar. |
| michael@0 | 35 | static bool HasEnvVar(const wchar_t* var); |
| michael@0 | 36 | |
| michael@0 | 37 | // Return the value of the given environment variable |
| michael@0 | 38 | // or an empty string if not defined. |
| michael@0 | 39 | // TODO: find a better place for GetEnvVar. |
| michael@0 | 40 | static std::wstring GetEnvVar(const wchar_t* var); |
| michael@0 | 41 | |
| michael@0 | 42 | // Returns the name of the host operating system. |
| michael@0 | 43 | static std::string OperatingSystemName(); |
| michael@0 | 44 | |
| michael@0 | 45 | // Returns the version of the host operating system. |
| michael@0 | 46 | static std::string OperatingSystemVersion(); |
| michael@0 | 47 | |
| michael@0 | 48 | // Retrieves detailed numeric values for the OS version. |
| michael@0 | 49 | // WARNING: On OS X, this method uses static variables and is not threadsafe |
| michael@0 | 50 | // until it's been initialized by being called once without a race. |
| michael@0 | 51 | // TODO(port): Implement a Linux version of this method and enable the |
| michael@0 | 52 | // corresponding unit test. |
| michael@0 | 53 | static void OperatingSystemVersionNumbers(int32_t *major_version, |
| michael@0 | 54 | int32_t *minor_version, |
| michael@0 | 55 | int32_t *bugfix_version); |
| michael@0 | 56 | |
| michael@0 | 57 | // Returns the CPU architecture of the system. Exact return value may differ |
| michael@0 | 58 | // across platforms. |
| michael@0 | 59 | static std::string CPUArchitecture(); |
| michael@0 | 60 | |
| michael@0 | 61 | // Returns the pixel dimensions of the primary display via the |
| michael@0 | 62 | // width and height parameters. |
| michael@0 | 63 | static void GetPrimaryDisplayDimensions(int* width, int* height); |
| michael@0 | 64 | |
| michael@0 | 65 | // Return the number of displays. |
| michael@0 | 66 | static int DisplayCount(); |
| michael@0 | 67 | |
| michael@0 | 68 | // Return the smallest amount of memory (in bytes) which the VM system will |
| michael@0 | 69 | // allocate. |
| michael@0 | 70 | static size_t VMAllocationGranularity(); |
| michael@0 | 71 | |
| michael@0 | 72 | #if defined(OS_MACOSX) |
| michael@0 | 73 | // Under the OS X Sandbox, our access to the system is limited, this call |
| michael@0 | 74 | // caches the system info on startup before we turn the Sandbox on. |
| michael@0 | 75 | // The above functions are all wired up to return the cached value so the rest |
| michael@0 | 76 | // of the code can call them in the Sandbox without worrying. |
| michael@0 | 77 | static void CacheSysInfo(); |
| michael@0 | 78 | #endif |
| michael@0 | 79 | }; |
| michael@0 | 80 | |
| michael@0 | 81 | } // namespace base |
| michael@0 | 82 | |
| michael@0 | 83 | #endif // BASE_SYS_INFO_H_ |
