FAQ: 如何列出系统中安装的中央处理器(CPU)

xstring 2004-04-17 09:45:21
问:如何列出系统中安装的中央处理器(CPU)
答:
以下方法是通过注册表来得到的。在processor这个kernel service的注册表项下有相关内容。代码如下:
/*
*
* enum-proc.c - 列出系统中的中央处理器(CPU)
*
* 作者: xstring@csdn
* 日期: 2004.04.16
*
* 说明:
* 如果你要得到每个CPU的更多硬件信息, 请自己查看程序中所涉及到
* 的注册表位置。
*
*/

#define _WIN32_WINNT 0x400
#define WIN32_LEAN_AND_MEAN
#define STRICT

#include <stdio.h>
#include <tchar.h>
#include <locale.h>
#include <windows.h>

#pragma comment (lib, "advapi32.lib")
#pragma comment (lib, "user32.lib")

void print_msg (LPCTSTR api, DWORD error)
{
LPTSTR str = NULL;
FormatMessage (FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
NULL, error, 0, (LPTSTR)&str, 0, 0);
_tprintf (TEXT ("%s 调用失败,错误代码: %u\n %s\n"),
api, error, str);
LocalFree (str);
};


#define CHECK_ERROR(apiname) \
if (error != ERROR_SUCCESS) \
{ \
api = TEXT (apiname); \
goto failed; \
}


int main (void)
{
HKEY keyServ = NULL;
HKEY keyEnum = NULL;
HKEY key = NULL;
DWORD error = 0;
LPCTSTR api = NULL;
DWORD type, count, size, i;

setlocale (LC_ALL, ".ACP");

error = RegOpenKeyEx (HKEY_LOCAL_MACHINE,
TEXT ("SYSTEM\\CurrentControlSet\\Services\\Processor\\Enum"),
0, KEY_READ, &keyServ);

CHECK_ERROR ("RegOpenKeyEx");

error = RegOpenKeyEx (HKEY_LOCAL_MACHINE,
TEXT ("SYSTEM\\CurrentControlSet\\Enum"),
0, KEY_READ, &keyEnum);

CHECK_ERROR ("RegOpenKeyEx");

size = sizeof (count);
error = RegQueryValueEx (keyServ, TEXT ("Count"),
0, &type, (LPBYTE)&count, &size);

CHECK_ERROR ("RegQueryValueEx");

_tprintf (TEXT ("您的系统上共有 %u 个中央处理器: \n\n"), count);

for (i=0;i<count;++i)
{
TCHAR sz [0x200];
TCHAR name [0x40];
wsprintf (name, TEXT ("%d"), i);
size = sizeof (sz);
error = RegQueryValueEx (keyServ, name,
0, &type, (LPBYTE)sz, &size);

CHECK_ERROR ("RegQueryValueEx");

error = RegOpenKeyEx (keyEnum, sz,
0, KEY_READ, &key);

CHECK_ERROR ("RegOpenKeyEx");

size = sizeof (sz);
error = RegQueryValueEx (key, TEXT ("FriendlyName"),
0, &type, (LPBYTE)sz, &size);

CHECK_ERROR ("RegQueryValueEx");

_tprintf (" CPU %d - %s\n",
i, sz);
RegCloseKey (key);
key = NULL;
};

RegCloseKey (keyEnum);
RegCloseKey (keyServ);
return 0;

failed:
if (keyServ)
RegCloseKey (keyServ);
if (keyEnum)
RegCloseKey (keyEnum);
if (key)
RegCloseKey (key);
print_msg (api, error);
return error;
};

在我的系统上运行结果如下:

您的系统上共有 1 个中央处理器:

CPU 0 - Intel(R) Pentium(R) 4 CPU 1.80GHz
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xstring 2004-04-17
下一个给你发显卡的
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暗黑帝国 2004-04-17
不知道有没有办法看显卡的型号的噢
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xstring 2004-04-17
当有系统中有多个不同型号的CPU时,无法用你这种方法判断

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taianmonkey 2004-04-17
你这种方法也很准!:-)
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taianmonkey 2004-04-17
还是这个准确!
#include<iostream>
using namespace std;

unsigned int SteppingID;
unsigned int Model;
unsigned int Family;
unsigned int ProcessorType;
unsigned char Brand;
unsigned long VersionInfo;
unsigned long FeatureInfo;

template<typename T>
void Print(char* a,T ret){
cout<<a<<":\t"<<ret<<endl;
}

void PrintBrand(char* str){
cout<<"This processor is:"<<str<<endl;
}

void GetFeature(long i,char *str)
{
_asm xor ebx,ebx
_asm mov ebx,i
_asm bt FeatureInfo,ebx //"bt" is opcode to test a particular bit(on/off) in a string
//The bit number to test is provided as the second operand
//The result is stored in the carry flag
_asm jnc Feature_not_installed
cout<<"CPU Feature: "<<str<<"\tO"<<endl;
return;
Feature_not_installed:
cout<<"CPU Feature: "<<str<<"\tX"<<endl;
}


int main()
{
char *strFeatures[32]={
"FPU ",// x87 FPU on Chip
"VME ",// Virtual 8086 Enhancement
"DE ",// Debugging Extensions
"PSE ",// Page Size Extensions
"TSC ",// Time Stamp Counter
"MSR ",// RDMSR and WRMSR Support
"PAE ",// Physical Address Extensions
"MCE ",// Machine Check Exception
"CX8 ",// CMPXCHG8B instruction
"APIC ",// Advanced Programmable Interrupt Controller on Chip
" ", //Reserved 10
"SEP ",// SYSENTER and SYSEXIT
"MTRR ",// Memory Type Range Register
"PGE ",// PTE Global Bit
"MCA ",// Machine Check Architecture
"CMOV ",// Condtional Move/Compare Instruction
"PAT ",// Page Attribute Table
"PSE-32 ",// Page Size Extension
"PSN ",// Processor Serial Number
"CLFSH ",// CFLUSH Instruction
" ", //Reserved 20
"DS ",// Debug Store
"ACPI ",// Thermal Monitor and Clock Control
"MMX ",// MMX Technology
"FXSR ",// FXSAVE/FXRSTOR
"SSE ",// SSE Extensions
"SSE2 ",// SSE2 Extensions
"SS ",// Self Snoop
"HTT ",// Hyper Threading Tech
"TM ",//Thermal Monitor
" ", //Reserved 30
"PBE ",// Pend. Brk. En
};
char* strProcessorType[]={
"ProcessorType", "Original OEM Processor",
"ProcessorType", "Intel OverDrive Processor",
"ProcessorType", "Dual Processor",
"ProcessorType", "Intel reserved"
};
char* strComputerBrand[]={
"This Processor does not support the brand identification feature",
"Intel Celeron",
"Intel Pentium III",
"Intel Pentium III Xeon or Intel Celeron",
"Intel Pentium III",
"Mobile Intel Pentium III-M",
"Other Processor",
"Mobile Intel Celeron",
"Intel Pentium 4",
"Intel Pentium 4",
"Intel Celeron",
"Intel Xeon or Xeon MP",
"Intel Xeon MP",
"Mobile Intel Pentium 4 or Intel Xeon",
"Other Processor",
"Other Processor",
"Other Processor",
"Other Processor",
"Other Processor",
"Other Processor",
"Mobile Intel Celeron",
"Mobile Intel Celeron",
"Intel Pentium M"
};

char VendorID[13];
_asm
{
mov eax,0
cpuid //CPUID Instruction
mov dword ptr [VendorID],ebx
mov dword ptr [VendorID+4],edx
mov dword ptr [VendorID+8],ecx
mov byte ptr [VendorID+12],0
}
//Show the Vendor ID. Should be "GenuineIntel" if the processor is Intel"/////////////
cout<<"Processor Vendor: "<<VendorID<<endl;
//Store all the required information in memory////////////////////////////////////////
_asm
{
mov eax,1
cpuid //CPUID Instruction
mov VersionInfo,eax //Store Version Information
mov FeatureInfo,edx //Store Feature Information
mov Brand,bl //Store Brand Information
}
//Extract the SteppingID, model and family from the bit encoded VersionInfo and display
SteppingID = VersionInfo & 0x0F; //Stepping ID
Model = (VersionInfo & 0xF0)>>4; //Model
Family = (VersionInfo & 0x0F00)>>8; //Family
ProcessorType = (VersionInfo & 3000)>>12; //Processor Type

Print("SteppingID", SteppingID);
Print("Model", Model);
Print("Family", Family);
//Show the Processor Type/////////////////////////////////////////////////////////////
Print("The Processor Type is",strProcessorType[ProcessorType]);

//Show the Computer Brand/////////////////////////////////////////////////////////////
if(Brand<=22)
Print("This processor is",strComputerBrand[Brand]);
else
Print("This processor is","Other Processor");
/////////////////////////////////////////////////////////////////////////////////////
//Get Processor features
for(int i=0;i<32;i++){
GetFeature(i,strFeatures[i]);
}
//////////////////////////////////////////////////////
//ending
return 0;
}
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shootingstars 2004-04-17
呵呵,请教楼主,能否得到K6的主频?其他的CPU好像都没有问题,就是K6的主频搞不定。
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