/*
* Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016
* Jonathan Schleifer <js@heap.zone>
*
* All rights reserved.
*
* This file is part of ObjFW. It may be distributed under the terms of the
* Q Public License 1.0, which can be found in the file LICENSE.QPL included in
* the packaging of this file.
*
* Alternatively, it may be distributed under the terms of the GNU General
* Public License, either version 2 or 3, which can be found in the file
* LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
* file.
*/
#import "OFObject.h"
#import "OFString.h"
OF_ASSUME_NONNULL_BEGIN
/*!
* @class OFSystemInfo OFSystemInfo.h ObjFW/OFSystemInfo.h
*
* @brief A class for querying information about the system.
*/
@interface OFSystemInfo: OFObject
/*!
* @brief Returns the size of a page.
*
* @return The size of a page
*/
+ (size_t)pageSize;
/*!
* @brief Returns the number of CPUs installed in the system.
*
* A CPU with multiple cores counts as multiple CPUs.
*
* @return The number of CPUs installed in the system
*/
+ (size_t)numberOfCPUs;
/*!
* @brief Returns the native 8-bit string encoding of the operating system.
*
* This is useful to encode strings correctly for passing them to operating
* system calls.
*
* @return The native 8-bit string encoding of the operating system
*/
+ (of_string_encoding_t)native8BitEncoding;
/*!
* @brief Returns the path where user data for the application can be stored.
*
* On Unix systems, this adheres to the XDG Base Directory specification.@n
* On Mac OS X and iOS, it uses the `NSApplicationSupportDirectory` directory.@n
* On Windows, it uses the `APPDATA` environment variable.@n
* On Haiku, it uses the `B_USER_SETTINGS_DIRECTORY` directory.
*
* @return The path where user data for the application can be stored
*/
+ (OFString*)userDataPath;
/*!
* @brief Returns the path where user configuration for the application can be
* stored.
*
* On Unix systems, this adheres to the XDG Base Directory specification.@n
* On Mac OS X and iOS, it uses the `Preferences` directory inside of
* `NSLibraryDirectory` directory.@n
* On Windows, it uses the `APPDATA` environment variable.@n
* On Haiku, it uses the `B_USER_SETTINGS_DIRECTORY` directory.
*
* @return The path where user configuration for the application can be stored
*/
+ (OFString*)userConfigPath;
/*!
* @brief Returns the vendor of the CPU.
*
* If the vendor could not be determined, `nil` is returned instead.
*
* @return The vendor of the CPU
*/
+ (nullable OFString*)CPUVendor;
#if defined(OF_X86_64) || defined(OF_X86) || defined(DOXYGEN)
/*!
* @brief Returns whether the CPU supports MMX.
*
* @note This method is only available on x86 and x86_64.
*
* @return Whether the CPU supports MMX
*/
+ (bool)supportsMMX;
/*!
* @brief Returns whether the CPU supports SSE.
*
* @warning This method only checks CPU support and assumes OS support!
*
* @note This method is only available on x86 and x86_64.
*
* @return Whether the CPU supports SSE
*/
+ (bool)supportsSSE;
/*!
* @brief Returns whether the CPU supports SSE2.
*
* @warning This method only checks CPU support and assumes OS support!
*
* @note This method is only available on x86 and x86_64.
*
* @return Whether the CPU supports SSE2
*/
+ (bool)supportsSSE2;
/*!
* @brief Returns whether the CPU supports SSE3.
*
* @warning This method only checks CPU support and assumes OS support!
*
* @note This method is only available on x86 and x86_64.
*
* @return Whether the CPU supports SSE3
*/
+ (bool)supportsSSE3;
/*!
* @brief Returns whether the CPU supports SSSE3.
*
* @warning This method only checks CPU support and assumes OS support!
*
* @note This method is only available on x86 and x86_64.
*
* @return Whether the CPU supports SSSE3
*/
+ (bool)supportsSSSE3;
/*!
* @brief Returns whether the CPU supports SSE4.1.
*
* @warning This method only checks CPU support and assumes OS support!
*
* @note This method is only available on x86 and x86_64.
*
* @return Whether the CPU supports SSE4.1
*/
+ (bool)supportsSSE41;
/*!
* @brief Returns whether the CPU supports SSE4.2.
*
* @warning This method only checks CPU support and assumes OS support!
*
* @note This method is only available on x86 and x86_64.
*
* @return Whether the CPU supports SSE4.2
*/
+ (bool)supportsSSE42;
/*!
* @brief Returns whether the CPU supports AVX.
*
* @warning This method only checks CPU support and assumes OS support!
*
* @note This method is only available on x86 and x86_64.
*
* @return Whether the CPU supports AVX
*/
+ (bool)supportsAVX;
/*!
* @brief Returns whether the CPU supports AVX2.
*
* @warning This method only checks CPU support and assumes OS support!
*
* @note This method is only available on x86 and x86_64.
*
* @return Whether the CPU supports AVX2
*/
+ (bool)supportsAVX2;
#endif
#if defined(OF_POWERPC) || defined(OF_POWERPC64)
/*!
* @brief Returns whether the CPU and OS support AltiVec.
*
* @note This method is only available on PowerPC and PowerPC64.
*
* @return Whether the CPU and OS support AltiVec
*/
+ (bool)supportsAltiVec;
#endif
@end
OF_ASSUME_NONNULL_END