include/MUtils/CPUFeatures.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // MuldeR's Utilities for Qt
   3 // Copyright (C) 2004-2017 LoRd_MuldeR <MuldeR2@GMX.de>
   4 //
   5 // This library is free software; you can redistribute it and/or
   6 // modify it under the terms of the GNU Lesser General Public
   7 // License as published by the Free Software Foundation; either
   8 // version 2.1 of the License, or (at your option) any later version.
   9 //
  10 // This library is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 // Lesser General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU Lesser General Public
  16 // License along with this library; if not, write to the Free Software
  17 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  18 //
  19 // http://www.gnu.org/licenses/lgpl-2.1.txt
  20 //////////////////////////////////////////////////////////////////////////////////
  21
  22 /**
  23 * @file
  24 * @brief This file contains function for detecting information about the CPU
  25 *
  26 * Call the MUtils::CPUFetaures::detect() to detect information about the processor, which will be returned in a `MUtils::CPUFetaures::cpu_info_t` struct.
  27 */
  28
  29 #pragma once
  30
  31 //MUtils
  32 #include <MUtils/Global.h>
  33
  34 //Qt
  35 #include <QStringList>
  36
  37 namespace MUtils
  38 {
  39         /**
  40         * \brief This namespace contains functions and constants for detecting CPU information
  41         *
  42         * Call the detect() to detect information about the processor, which will be returned in a `cpu_info_t` struct.
  43         */
  44         namespace CPUFetaures
  45         {
  46                 // CPU vendor flag
  47                 static const quint8 VENDOR_INTEL = 0x01U;       ///< \brief CPU vendor flag \details Indicates that the CPU's vendor is *Intel*
  48                 static const quint8 VENDOR_AMD = 0x02U; ///< \brief CPU vendor flag \details Indicates that the CPU's vendor is *AMD*
  49
  50                 // CPU feature flag
  51                 static const quint32 FLAG_CMOV  = 0x001U;       ///< \brief CPU feature flag \details Indicates that the CPU supports the *CMOV* instruction
  52                 static const quint32 FLAG_MMX   = 0x002U;       ///< \brief CPU feature flag \details Indicates that the CPU supports the *MMX* instruction set extension
  53                 static const quint32 FLAG_SSE   = 0x004U;       ///< \brief CPU feature flag \details Indicates that the CPU supports the *SSE* instruction set extension
  54                 static const quint32 FLAG_SSE2  = 0x008U;       ///< \brief CPU feature flag \details Indicates that the CPU supports the *SSE2* instruction set extension
  55                 static const quint32 FLAG_SSE3  = 0x010U;       ///< \brief CPU feature flag \details Indicates that the CPU supports the *SSE3* instruction set extension
  56                 static const quint32 FLAG_SSSE3 = 0x020U;       ///< \brief CPU feature flag \details Indicates that the CPU supports the *SSSE3* instruction set extension
  57                 static const quint32 FLAG_SSE41 = 0x040U;       ///< \brief CPU feature flag \details Indicates that the CPU supports the *SSE4.1* instruction set extension
  58                 static const quint32 FLAG_SSE42 = 0x080U;       ///< \brief CPU feature flag \details Indicates that the CPU supports the *SSE4.2* instruction set extension
  59                 static const quint32 FLAG_AVX   = 0x100U;       ///< \brief CPU feature flag \details Indicates that the CPU supports the *AVX* instruction set extension
  60                 static const quint32 FLAG_AVX2  = 0x200U;       ///< \brief CPU feature flag \details Indicates that the CPU supports the *AVX2* instruction set extension
  61                 static const quint32 FLAG_FMA3  = 0x400U;       ///< \brief CPU feature flag \details Indicates that the CPU supports the *FMA3* instruction
  62                 static const quint32 FLAG_LZCNT = 0x800U;       ///< \brief CPU feature flag \details Indicates that the CPU supports the *LZCNT* instruction
  63
  64                 /**
  65                 * \brief Struct to hold information about the CPU. See `_cpu_info_t` for details!
  66                 */
  67                 typedef struct _cpu_info_t
  68                 {
  69                         quint32 family;         ///< CPU *family* indicator, which specifies the processor "generation" to which the CPU belongs
  70                         quint32 model;          ///< CPU *model* indicator, which is used to distinguish processor "variants" within a generation
  71                         quint32 stepping;       ///< CPU *stepping* indicator, which is used to distinguish "revisions" of a certain processor model
  72                         quint32 count;          ///< The number of available (logical) processors
  73                         quint32 features;       ///< CPU *feature* flags, indicating suppoprt for extended instruction sets; all flags are OR-combined
  74                         bool x64;                       ///< Indicates that the processor and the operating system support 64-Bit (AMD64/EM64T)
  75                         quint8 vendor;          ///< CPU *vendor* flag; might be zero, if vendor is unknown
  76                         char idstr[13];         ///< CPU *identifier* string, exactly 12 characters (e.g. "GenuineIntel" or "AuthenticAMD")
  77                         char brand[48];         ///< CPU *brand* string, up to 48 characters (e.g. "Intel(R) Core(TM) i7-6700K CPU @ 4.00GHz")
  78                 }
  79                 cpu_info_t;
  80
  81                 /**
  82                 * \brief Detect processor information
  83                 *
  84                 * Detects information about the CPU on which the application is running, including CPU vendor, identifier string, feature flags (MMX, SSE, AVX, etc) as well as the CPU core count.
  85                 *
  86                 * \return The function returns a `cpu_info_t` struct containing the detected information about the CPU.
  87                 */
  88                 MUTILS_API cpu_info_t detect(void);
  89         }
  90 }