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SystemInformation.cxx
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SystemInformation.cxx
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/*============================================================================
KWSys - Kitware System Library
Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
Distributed under the OSI-approved BSD License (the "License");
see accompanying file Copyright.txt for details.
This software is distributed WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the License for more information.
============================================================================*/
#ifdef _WIN32
# include <winsock.h> // WSADATA, include before sys/types.h
#endif
// TODO:
// We need an alternative implementation for many functions in this file
// when USE_ASM_INSTRUCTIONS gets defined as 0.
//
// Consider using these on Win32/Win64 for some of them:
//
// IsProcessorFeaturePresent
// http://msdn.microsoft.com/en-us/library/ms724482(VS.85).aspx
//
// GetProcessMemoryInfo
// http://msdn.microsoft.com/en-us/library/ms683219(VS.85).aspx
#include "kwsysPrivate.h"
#include KWSYS_HEADER(FundamentalType.h)
#include KWSYS_HEADER(stl/string)
#include KWSYS_HEADER(stl/vector)
#include KWSYS_HEADER(ios/iosfwd)
#include KWSYS_HEADER(SystemInformation.hxx)
#include KWSYS_HEADER(Process.h)
#include KWSYS_HEADER(ios/iostream)
#include KWSYS_HEADER(ios/sstream)
// Work-around CMake dependency scanning limitation. This must
// duplicate the above list of headers.
#if 0
# include "FundamentalType.h.in"
# include "SystemInformation.hxx.in"
# include "Process.h.in"
# include "Configure.hxx.in"
# include "kwsys_stl.hxx.in"
# include "kwsys_stl_vector.in"
# include "kwsys_stl_iosfwd.in"
# include "kwsys_ios_sstream.h.in"
# include "kwsys_ios_iostream.h.in"
#endif
#ifndef WIN32
# include <sys/utsname.h> // int uname(struct utsname *buf);
#endif
#ifdef _WIN32
# include <windows.h>
#endif
#ifdef __APPLE__
#include <sys/sysctl.h>
#include <mach/vm_statistics.h>
#include <mach/host_info.h>
#include <mach/mach.h>
#include <mach/mach_types.h>
#endif
#ifdef __linux
# include <sys/procfs.h>
# include <sys/types.h>
# include <unistd.h>
# include <fcntl.h>
# include <ctype.h> // int isdigit(int c);
# include <errno.h> // extern int errno;
# include <sys/time.h>
#elif __hpux
# include <sys/param.h>
# include <sys/pstat.h>
#endif
#ifdef __HAIKU__
#include <OS.h>
#endif
#include <memory.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
namespace KWSYS_NAMESPACE
{
// Create longlong
#if KWSYS_USE_LONG_LONG
typedef long long LongLong;
#elif KWSYS_USE___INT64
typedef __int64 LongLong;
#else
# error "No Long Long"
#endif
// Define SystemInformationImplementation class
typedef void (*DELAY_FUNC)(unsigned int uiMS);
class SystemInformationImplementation
{
public:
SystemInformationImplementation ();
~SystemInformationImplementation ();
const char * GetVendorString();
const char * GetVendorID();
kwsys_stl::string GetTypeID();
kwsys_stl::string GetFamilyID();
kwsys_stl::string GetModelID();
kwsys_stl::string GetSteppingCode();
const char * GetExtendedProcessorName();
const char * GetProcessorSerialNumber();
int GetProcessorCacheSize();
unsigned int GetLogicalProcessorsPerPhysical();
float GetProcessorClockFrequency();
int GetProcessorAPICID();
int GetProcessorCacheXSize(long int);
bool DoesCPUSupportFeature(long int);
const char * GetOSName();
const char * GetHostname();
const char * GetOSRelease();
const char * GetOSVersion();
const char * GetOSPlatform();
bool Is64Bits();
unsigned int GetNumberOfLogicalCPU(); // per physical cpu
unsigned int GetNumberOfPhysicalCPU();
bool DoesCPUSupportCPUID();
// Retrieve memory information in megabyte.
size_t GetTotalVirtualMemory();
size_t GetAvailableVirtualMemory();
size_t GetTotalPhysicalMemory();
size_t GetAvailablePhysicalMemory();
/** Run the different checks */
void RunCPUCheck();
void RunOSCheck();
void RunMemoryCheck();
public:
#define VENDOR_STRING_LENGTH (12 + 1)
#define CHIPNAME_STRING_LENGTH (48 + 1)
#define SERIALNUMBER_STRING_LENGTH (29 + 1)
typedef struct tagID
{
int Type;
int Family;
int Model;
int Revision;
int ExtendedFamily;
int ExtendedModel;
char ProcessorName[CHIPNAME_STRING_LENGTH];
char Vendor[VENDOR_STRING_LENGTH];
char SerialNumber[SERIALNUMBER_STRING_LENGTH];
} ID;
typedef struct tagCPUPowerManagement
{
bool HasVoltageID;
bool HasFrequencyID;
bool HasTempSenseDiode;
} CPUPowerManagement;
typedef struct tagCPUExtendedFeatures
{
bool Has3DNow;
bool Has3DNowPlus;
bool SupportsMP;
bool HasMMXPlus;
bool HasSSEMMX;
bool SupportsHyperthreading;
unsigned int LogicalProcessorsPerPhysical;
int APIC_ID;
CPUPowerManagement PowerManagement;
} CPUExtendedFeatures;
typedef struct CPUtagFeatures
{
bool HasFPU;
bool HasTSC;
bool HasMMX;
bool HasSSE;
bool HasSSEFP;
bool HasSSE2;
bool HasIA64;
bool HasAPIC;
bool HasCMOV;
bool HasMTRR;
bool HasACPI;
bool HasSerial;
bool HasThermal;
int CPUSpeed;
int L1CacheSize;
int L2CacheSize;
int L3CacheSize;
CPUExtendedFeatures ExtendedFeatures;
} CPUFeatures;
enum Manufacturer
{
AMD, Intel, NSC, UMC, Cyrix, NexGen, IDT, Rise, Transmeta, Sun, IBM,
Motorola, UnknownManufacturer
};
protected:
// Functions.
bool RetrieveCPUFeatures();
bool RetrieveCPUIdentity();
bool RetrieveCPUCacheDetails();
bool RetrieveClassicalCPUCacheDetails();
bool RetrieveCPUClockSpeed();
bool RetrieveClassicalCPUClockSpeed();
bool RetrieveCPUExtendedLevelSupport(int);
bool RetrieveExtendedCPUFeatures();
bool RetrieveProcessorSerialNumber();
bool RetrieveCPUPowerManagement();
bool RetrieveClassicalCPUIdentity();
bool RetrieveExtendedCPUIdentity();
Manufacturer ChipManufacturer;
CPUFeatures Features;
ID ChipID;
float CPUSpeedInMHz;
unsigned int NumberOfLogicalCPU;
unsigned int NumberOfPhysicalCPU;
int CPUCount();
unsigned char LogicalCPUPerPhysicalCPU();
unsigned char GetAPICId();
unsigned int IsHyperThreadingSupported();
LongLong GetCyclesDifference(DELAY_FUNC, unsigned int);
// For Linux and Cygwin, /proc/cpuinfo formats are slightly different
int RetreiveInformationFromCpuInfoFile();
kwsys_stl::string ExtractValueFromCpuInfoFile(kwsys_stl::string buffer,
const char* word, size_t init=0);
static void Delay (unsigned int);
static void DelayOverhead (unsigned int);
void FindManufacturer();
// For Mac
bool ParseSysCtl();
void CallSwVers();
void TrimNewline(kwsys_stl::string&);
kwsys_stl::string ExtractValueFromSysCtl(const char* word);
kwsys_stl::string SysCtlBuffer;
// For Solaris
bool QuerySolarisInfo();
kwsys_stl::string ParseValueFromKStat(const char* arguments);
kwsys_stl::string RunProcess(kwsys_stl::vector<const char*> args);
//For Haiku OS
bool QueryHaikuInfo();
// Evaluate the memory information.
int QueryMemory();
size_t TotalVirtualMemory;
size_t AvailableVirtualMemory;
size_t TotalPhysicalMemory;
size_t AvailablePhysicalMemory;
size_t CurrentPositionInFile;
// Operating System information
bool QueryOSInformation();
kwsys_stl::string OSName;
kwsys_stl::string Hostname;
kwsys_stl::string OSRelease;
kwsys_stl::string OSVersion;
kwsys_stl::string OSPlatform;
};
SystemInformation::SystemInformation()
{
this->Implementation = new SystemInformationImplementation;
}
SystemInformation::~SystemInformation()
{
delete this->Implementation;
}
const char * SystemInformation::GetVendorString()
{
return this->Implementation->GetVendorString();
}
const char * SystemInformation::GetVendorID()
{
return this->Implementation->GetVendorID();
}
kwsys_stl::string SystemInformation::GetTypeID()
{
return this->Implementation->GetTypeID();
}
kwsys_stl::string SystemInformation::GetFamilyID()
{
return this->Implementation->GetFamilyID();
}
kwsys_stl::string SystemInformation::GetModelID()
{
return this->Implementation->GetModelID();
}
kwsys_stl::string SystemInformation::GetSteppingCode()
{
return this->Implementation->GetSteppingCode();
}
const char * SystemInformation::GetExtendedProcessorName()
{
return this->Implementation->GetExtendedProcessorName();
}
const char * SystemInformation::GetProcessorSerialNumber()
{
return this->Implementation->GetProcessorSerialNumber();
}
int SystemInformation::GetProcessorCacheSize()
{
return this->Implementation->GetProcessorCacheSize();
}
unsigned int SystemInformation::GetLogicalProcessorsPerPhysical()
{
return this->Implementation->GetLogicalProcessorsPerPhysical();
}
float SystemInformation::GetProcessorClockFrequency()
{
return this->Implementation->GetProcessorClockFrequency();
}
int SystemInformation::GetProcessorAPICID()
{
return this->Implementation->GetProcessorAPICID();
}
int SystemInformation::GetProcessorCacheXSize(long int l)
{
return this->Implementation->GetProcessorCacheXSize(l);
}
bool SystemInformation::DoesCPUSupportFeature(long int i)
{
return this->Implementation->DoesCPUSupportFeature(i);
}
const char * SystemInformation::GetOSName()
{
return this->Implementation->GetOSName();
}
const char * SystemInformation::GetHostname()
{
return this->Implementation->GetHostname();
}
const char * SystemInformation::GetOSRelease()
{
return this->Implementation->GetOSRelease();
}
const char * SystemInformation::GetOSVersion()
{
return this->Implementation->GetOSVersion();
}
const char * SystemInformation::GetOSPlatform()
{
return this->Implementation->GetOSPlatform();
}
bool SystemInformation::Is64Bits()
{
return this->Implementation->Is64Bits();
}
unsigned int SystemInformation::GetNumberOfLogicalCPU() // per physical cpu
{
return this->Implementation->GetNumberOfLogicalCPU();
}
unsigned int SystemInformation::GetNumberOfPhysicalCPU()
{
return this->Implementation->GetNumberOfPhysicalCPU();
}
bool SystemInformation::DoesCPUSupportCPUID()
{
return this->Implementation->DoesCPUSupportCPUID();
}
// Retrieve memory information in megabyte.
size_t SystemInformation::GetTotalVirtualMemory()
{
return this->Implementation->GetTotalVirtualMemory();
}
size_t SystemInformation::GetAvailableVirtualMemory()
{
return this->Implementation->GetAvailableVirtualMemory();
}
size_t SystemInformation::GetTotalPhysicalMemory()
{
return this->Implementation->GetTotalPhysicalMemory();
}
size_t SystemInformation::GetAvailablePhysicalMemory()
{
return this->Implementation->GetAvailablePhysicalMemory();
}
/** Run the different checks */
void SystemInformation::RunCPUCheck()
{
this->Implementation->RunCPUCheck();
}
void SystemInformation::RunOSCheck()
{
this->Implementation->RunOSCheck();
}
void SystemInformation::RunMemoryCheck()
{
this->Implementation->RunMemoryCheck();
}
// --------------------------------------------------------------
// SystemInformationImplementation starts here
#if defined(_MSC_VER) && (_MSC_VER >= 1300) && !defined(_WIN64)
#define USE_ASM_INSTRUCTIONS 1
#else
#define USE_ASM_INSTRUCTIONS 0
#endif
#define STORE_TLBCACHE_INFO(x,y) x = (x < y) ? y : x
#define TLBCACHE_INFO_UNITS (15)
#define CLASSICAL_CPU_FREQ_LOOP 10000000
#define RDTSC_INSTRUCTION _asm _emit 0x0f _asm _emit 0x31
#define CPUID_AWARE_COMPILER
#ifdef CPUID_AWARE_COMPILER
#define CPUID_INSTRUCTION cpuid
#else
#define CPUID_INSTRUCTION _asm _emit 0x0f _asm _emit 0xa2
#endif
#define MMX_FEATURE 0x00000001
#define MMX_PLUS_FEATURE 0x00000002
#define SSE_FEATURE 0x00000004
#define SSE2_FEATURE 0x00000008
#define AMD_3DNOW_FEATURE 0x00000010
#define AMD_3DNOW_PLUS_FEATURE 0x00000020
#define IA64_FEATURE 0x00000040
#define MP_CAPABLE 0x00000080
#define HYPERTHREAD_FEATURE 0x00000100
#define SERIALNUMBER_FEATURE 0x00000200
#define APIC_FEATURE 0x00000400
#define SSE_FP_FEATURE 0x00000800
#define SSE_MMX_FEATURE 0x00001000
#define CMOV_FEATURE 0x00002000
#define MTRR_FEATURE 0x00004000
#define L1CACHE_FEATURE 0x00008000
#define L2CACHE_FEATURE 0x00010000
#define L3CACHE_FEATURE 0x00020000
#define ACPI_FEATURE 0x00040000
#define THERMALMONITOR_FEATURE 0x00080000
#define TEMPSENSEDIODE_FEATURE 0x00100000
#define FREQUENCYID_FEATURE 0x00200000
#define VOLTAGEID_FREQUENCY 0x00400000
// Status Flag
#define HT_NOT_CAPABLE 0
#define HT_ENABLED 1
#define HT_DISABLED 2
#define HT_SUPPORTED_NOT_ENABLED 3
#define HT_CANNOT_DETECT 4
// EDX[28] Bit 28 is set if HT is supported
#define HT_BIT 0x10000000
// EAX[11:8] Bit 8-11 contains family processor ID.
#define FAMILY_ID 0x0F00
#define PENTIUM4_ID 0x0F00
// EAX[23:20] Bit 20-23 contains extended family processor ID
#define EXT_FAMILY_ID 0x0F00000
// EBX[23:16] Bit 16-23 in ebx contains the number of logical
#define NUM_LOGICAL_BITS 0x00FF0000
// processors per physical processor when execute cpuid with
// eax set to 1
// EBX[31:24] Bits 24-31 (8 bits) return the 8-bit unique
#define INITIAL_APIC_ID_BITS 0xFF000000
// initial APIC ID for the processor this code is running on.
// Default value = 0xff if HT is not supported
SystemInformationImplementation::SystemInformationImplementation()
{
this->TotalVirtualMemory = 0;
this->AvailableVirtualMemory = 0;
this->TotalPhysicalMemory = 0;
this->AvailablePhysicalMemory = 0;
this->CurrentPositionInFile = 0;
this->ChipManufacturer = UnknownManufacturer;
memset(&this->Features, 0, sizeof(CPUFeatures));
memset(&this->ChipID, 0, sizeof(ID));
this->CPUSpeedInMHz = 0;
this->NumberOfLogicalCPU = 0;
this->NumberOfPhysicalCPU = 0;
this->OSName = "";
this->Hostname = "";
this->OSRelease = "";
this->OSVersion = "";
this->OSPlatform = "";
}
SystemInformationImplementation::~SystemInformationImplementation()
{
}
void SystemInformationImplementation::RunCPUCheck()
{
#ifdef WIN32
// Check to see if this processor supports CPUID.
bool supportsCPUID = DoesCPUSupportCPUID();
if (supportsCPUID)
{
// Retrieve the CPU details.
RetrieveCPUIdentity();
RetrieveCPUFeatures();
}
// These two may be called without support for the CPUID instruction.
// (But if the instruction is there, they should be called *after*
// the above call to RetrieveCPUIdentity... that's why the two if
// blocks exist with the same "if (supportsCPUID)" logic...
//
if (!RetrieveCPUClockSpeed())
{
RetrieveClassicalCPUClockSpeed();
}
if (supportsCPUID)
{
// Retrieve cache information.
if (!RetrieveCPUCacheDetails())
{
RetrieveClassicalCPUCacheDetails();
}
// Retrieve the extended CPU details.
if (!RetrieveExtendedCPUIdentity())
{
RetrieveClassicalCPUIdentity();
}
RetrieveExtendedCPUFeatures();
RetrieveCPUPowerManagement();
// Now attempt to retrieve the serial number (if possible).
RetrieveProcessorSerialNumber();
}
this->CPUCount();
#elif defined(__APPLE__)
this->ParseSysCtl();
#elif defined (__SVR4) && defined (__sun)
this->QuerySolarisInfo();
#elif defined(__HAIKU__)
this->QueryHaikuInfo();
#else
this->RetreiveInformationFromCpuInfoFile();
#endif
}
void SystemInformationImplementation::RunOSCheck()
{
this->QueryOSInformation();
}
void SystemInformationImplementation::RunMemoryCheck()
{
#if defined(__APPLE__)
this->ParseSysCtl();
#elif defined (__SVR4) && defined (__sun)
this->QuerySolarisInfo();
#elif defined(__HAIKU__)
this->QueryHaikuInfo();
#else
this->QueryMemory();
#endif
}
/** Get the vendor string */
const char * SystemInformationImplementation::GetVendorString()
{
return this->ChipID.Vendor;
}
/** Get the OS Name */
const char * SystemInformationImplementation::GetOSName()
{
return this->OSName.c_str();
}
/** Get the hostname */
const char* SystemInformationImplementation::GetHostname()
{
return this->Hostname.c_str();
}
/** Get the OS release */
const char* SystemInformationImplementation::GetOSRelease()
{
return this->OSRelease.c_str();
}
/** Get the OS version */
const char* SystemInformationImplementation::GetOSVersion()
{
return this->OSVersion.c_str();
}
/** Get the OS platform */
const char* SystemInformationImplementation::GetOSPlatform()
{
return this->OSPlatform.c_str();
}
/** Get the vendor ID */
const char * SystemInformationImplementation::GetVendorID()
{
// Return the vendor ID.
switch (this->ChipManufacturer)
{
case Intel:
return "Intel Corporation";
case AMD:
return "Advanced Micro Devices";
case NSC:
return "National Semiconductor";
case Cyrix:
return "Cyrix Corp., VIA Inc.";
case NexGen:
return "NexGen Inc., Advanced Micro Devices";
case IDT:
return "IDT\\Centaur, Via Inc.";
case UMC:
return "United Microelectronics Corp.";
case Rise:
return "Rise";
case Transmeta:
return "Transmeta";
case Sun:
return "Sun Microelectronics";
case IBM:
return "IBM";
case Motorola:
return "Motorola";
default:
return "Unknown Manufacturer";
}
}
/** Return the type ID of the CPU */
kwsys_stl::string SystemInformationImplementation::GetTypeID()
{
kwsys_ios::ostringstream str;
str << this->ChipID.Type;
return str.str();
}
/** Return the family of the CPU present */
kwsys_stl::string SystemInformationImplementation::GetFamilyID()
{
kwsys_ios::ostringstream str;
str << this->ChipID.Family;
return str.str();
}
// Return the model of CPU present */
kwsys_stl::string SystemInformationImplementation::GetModelID()
{
kwsys_ios::ostringstream str;
str << this->ChipID.Model;
return str.str();
}
/** Return the stepping code of the CPU present. */
kwsys_stl::string SystemInformationImplementation::GetSteppingCode()
{
kwsys_ios::ostringstream str;
str << this->ChipID.Revision;
return str.str();
}
/** Return the stepping code of the CPU present. */
const char * SystemInformationImplementation::GetExtendedProcessorName()
{
return this->ChipID.ProcessorName;
}
/** Return the serial number of the processor
* in hexadecimal: xxxx-xxxx-xxxx-xxxx-xxxx-xxxx. */
const char * SystemInformationImplementation::GetProcessorSerialNumber()
{
return this->ChipID.SerialNumber;
}
/** Return the logical processors per physical */
unsigned int SystemInformationImplementation::GetLogicalProcessorsPerPhysical()
{
return this->Features.ExtendedFeatures.LogicalProcessorsPerPhysical;
}
/** Return the processor clock frequency. */
float SystemInformationImplementation::GetProcessorClockFrequency()
{
return this->CPUSpeedInMHz;
}
/** Return the APIC ID. */
int SystemInformationImplementation::GetProcessorAPICID()
{
return this->Features.ExtendedFeatures.APIC_ID;
}
/** Return the L1 cache size. */
int SystemInformationImplementation::GetProcessorCacheSize()
{
return this->Features.L1CacheSize;
}
/** Return the chosen cache size. */
int SystemInformationImplementation::GetProcessorCacheXSize(long int dwCacheID)
{
switch (dwCacheID)
{
case L1CACHE_FEATURE:
return this->Features.L1CacheSize;
case L2CACHE_FEATURE:
return this->Features.L2CacheSize;
case L3CACHE_FEATURE:
return this->Features.L3CacheSize;
}
return -1;
}
bool SystemInformationImplementation::DoesCPUSupportFeature(long int dwFeature)
{
bool bHasFeature = false;
// Check for MMX instructions.
if (((dwFeature & MMX_FEATURE) != 0) && this->Features.HasMMX) bHasFeature = true;
// Check for MMX+ instructions.
if (((dwFeature & MMX_PLUS_FEATURE) != 0) && this->Features.ExtendedFeatures.HasMMXPlus) bHasFeature = true;
// Check for SSE FP instructions.
if (((dwFeature & SSE_FEATURE) != 0) && this->Features.HasSSE) bHasFeature = true;
// Check for SSE FP instructions.
if (((dwFeature & SSE_FP_FEATURE) != 0) && this->Features.HasSSEFP) bHasFeature = true;
// Check for SSE MMX instructions.
if (((dwFeature & SSE_MMX_FEATURE) != 0) && this->Features.ExtendedFeatures.HasSSEMMX) bHasFeature = true;
// Check for SSE2 instructions.
if (((dwFeature & SSE2_FEATURE) != 0) && this->Features.HasSSE2) bHasFeature = true;
// Check for 3DNow! instructions.
if (((dwFeature & AMD_3DNOW_FEATURE) != 0) && this->Features.ExtendedFeatures.Has3DNow) bHasFeature = true;
// Check for 3DNow+ instructions.
if (((dwFeature & AMD_3DNOW_PLUS_FEATURE) != 0) && this->Features.ExtendedFeatures.Has3DNowPlus) bHasFeature = true;
// Check for IA64 instructions.
if (((dwFeature & IA64_FEATURE) != 0) && this->Features.HasIA64) bHasFeature = true;
// Check for MP capable.
if (((dwFeature & MP_CAPABLE) != 0) && this->Features.ExtendedFeatures.SupportsMP) bHasFeature = true;
// Check for a serial number for the processor.
if (((dwFeature & SERIALNUMBER_FEATURE) != 0) && this->Features.HasSerial) bHasFeature = true;
// Check for a local APIC in the processor.
if (((dwFeature & APIC_FEATURE) != 0) && this->Features.HasAPIC) bHasFeature = true;
// Check for CMOV instructions.
if (((dwFeature & CMOV_FEATURE) != 0) && this->Features.HasCMOV) bHasFeature = true;
// Check for MTRR instructions.
if (((dwFeature & MTRR_FEATURE) != 0) && this->Features.HasMTRR) bHasFeature = true;
// Check for L1 cache size.
if (((dwFeature & L1CACHE_FEATURE) != 0) && (this->Features.L1CacheSize != -1)) bHasFeature = true;
// Check for L2 cache size.
if (((dwFeature & L2CACHE_FEATURE) != 0) && (this->Features.L2CacheSize != -1)) bHasFeature = true;
// Check for L3 cache size.
if (((dwFeature & L3CACHE_FEATURE) != 0) && (this->Features.L3CacheSize != -1)) bHasFeature = true;
// Check for ACPI capability.
if (((dwFeature & ACPI_FEATURE) != 0) && this->Features.HasACPI) bHasFeature = true;
// Check for thermal monitor support.
if (((dwFeature & THERMALMONITOR_FEATURE) != 0) && this->Features.HasThermal) bHasFeature = true;
// Check for temperature sensing diode support.
if (((dwFeature & TEMPSENSEDIODE_FEATURE) != 0) && this->Features.ExtendedFeatures.PowerManagement.HasTempSenseDiode) bHasFeature = true;
// Check for frequency ID support.
if (((dwFeature & FREQUENCYID_FEATURE) != 0) && this->Features.ExtendedFeatures.PowerManagement.HasFrequencyID) bHasFeature = true;
// Check for voltage ID support.
if (((dwFeature & VOLTAGEID_FREQUENCY) != 0) && this->Features.ExtendedFeatures.PowerManagement.HasVoltageID) bHasFeature = true;
return bHasFeature;
}
void SystemInformationImplementation::Delay(unsigned int uiMS)
{
#ifdef WIN32
LARGE_INTEGER Frequency, StartCounter, EndCounter;
__int64 x;
// Get the frequency of the high performance counter.
if (!QueryPerformanceFrequency (&Frequency)) return;
x = Frequency.QuadPart / 1000 * uiMS;
// Get the starting position of the counter.
QueryPerformanceCounter (&StartCounter);
do {
// Get the ending position of the counter.
QueryPerformanceCounter (&EndCounter);
} while (EndCounter.QuadPart - StartCounter.QuadPart < x);
#endif
(void)uiMS;
}
bool SystemInformationImplementation::DoesCPUSupportCPUID()
{
#if USE_ASM_INSTRUCTIONS
// Use SEH to determine CPUID presence
__try {
_asm {
#ifdef CPUID_AWARE_COMPILER
; we must push/pop the registers <<CPUID>> writes to, as the
; optimiser doesn't know about <<CPUID>>, and so doesn't expect
; these registers to change.
push eax
push ebx
push ecx
push edx
#endif
; <<CPUID>>
mov eax, 0
CPUID_INSTRUCTION
#ifdef CPUID_AWARE_COMPILER
pop edx
pop ecx
pop ebx
pop eax
#endif
}
}
__except(1)
{
// Stop the class from trying to use CPUID again!
return false;
}
// The cpuid instruction succeeded.
return true;
#else
// Assume no cpuid instruction.
return false;
#endif
}
bool SystemInformationImplementation::RetrieveCPUFeatures()
{
#if USE_ASM_INSTRUCTIONS
int localCPUFeatures = 0;
int localCPUAdvanced = 0;
// Use assembly to detect CPUID information...
__try {
_asm {
#ifdef CPUID_AWARE_COMPILER
; we must push/pop the registers <<CPUID>> writes to, as the
; optimiser doesn't know about <<CPUID>>, and so doesn't expect
; these registers to change.
push eax
push ebx
push ecx
push edx
#endif
; <<CPUID>>
; eax = 1 --> eax: CPU ID - bits 31..16 - unused, bits 15..12 - type, bits 11..8 - family, bits 7..4 - model, bits 3..0 - mask revision
; ebx: 31..24 - default APIC ID, 23..16 - logical processsor ID, 15..8 - CFLUSH chunk size , 7..0 - brand ID
; edx: CPU feature flags
mov eax,1
CPUID_INSTRUCTION
mov localCPUFeatures, edx
mov localCPUAdvanced, ebx
#ifdef CPUID_AWARE_COMPILER
pop edx
pop ecx
pop ebx
pop eax
#endif
}
}
__except(1)
{
return false;
}
// Retrieve the features of CPU present.
this->Features.HasFPU = ((localCPUFeatures & 0x00000001) != 0); // FPU Present --> Bit 0
this->Features.HasTSC = ((localCPUFeatures & 0x00000010) != 0); // TSC Present --> Bit 4
this->Features.HasAPIC = ((localCPUFeatures & 0x00000200) != 0); // APIC Present --> Bit 9
this->Features.HasMTRR = ((localCPUFeatures & 0x00001000) != 0); // MTRR Present --> Bit 12
this->Features.HasCMOV = ((localCPUFeatures & 0x00008000) != 0); // CMOV Present --> Bit 15
this->Features.HasSerial = ((localCPUFeatures & 0x00040000) != 0); // Serial Present --> Bit 18
this->Features.HasACPI = ((localCPUFeatures & 0x00400000) != 0); // ACPI Capable --> Bit 22
this->Features.HasMMX = ((localCPUFeatures & 0x00800000) != 0); // MMX Present --> Bit 23
this->Features.HasSSE = ((localCPUFeatures & 0x02000000) != 0); // SSE Present --> Bit 25
this->Features.HasSSE2 = ((localCPUFeatures & 0x04000000) != 0); // SSE2 Present --> Bit 26
this->Features.HasThermal = ((localCPUFeatures & 0x20000000) != 0); // Thermal Monitor Present --> Bit 29
this->Features.HasIA64 = ((localCPUFeatures & 0x40000000) != 0); // IA64 Present --> Bit 30
// Retrieve extended SSE capabilities if SSE is available.
if (this->Features.HasSSE) {
// Attempt to __try some SSE FP instructions.
__try
{
// Perform: orps xmm0, xmm0
_asm
{
_emit 0x0f
_emit 0x56
_emit 0xc0
}
// SSE FP capable processor.
this->Features.HasSSEFP = true;
}
__except(1)
{
// bad instruction - processor or OS cannot handle SSE FP.
this->Features.HasSSEFP = false;
}
}
else
{
// Set the advanced SSE capabilities to not available.
this->Features.HasSSEFP = false;
}