操作系统和内存信息在windows下通过系统的API来获取，CPU信息则需要需要通过底层CPUID指令取得
#include <iostream> #include <string> #include <windows.h> #pragma warning(disable: 4996) // avoid GetVersionEx to be warned // ***** global macros ***** // static const int kMaxInfoBuffer = 256; #define GBYTES 1073741824 #define MBYTES 1048576 #define KBYTES 1024 #define DKBYTES 1024.0 // ---- get os info ---- // void getOsInfo() { // get os name according to version number OSVERSIONINFO osver = {sizeof(OSVERSIONINFO)}; GetVersionEx(&osver); std::string os_name; if (osver.dwMajorVersion == 5 && osver.dwMinorVersion == 0) os_name = "Windows 2000"; else if (osver.dwMajorVersion == 5 && osver.dwMinorVersion == 1) os_name = "Windows XP"; else if (osver.dwMajorVersion == 6 && osver.dwMinorVersion == 0) os_name = "Windows 2003"; else if (osver.dwMajorVersion == 5 && osver.dwMinorVersion == 2) os_name = "windows vista"; else if (osver.dwMajorVersion == 6 && osver.dwMinorVersion == 1) os_name = "windows 7"; else if (osver.dwMajorVersion == 6 && osver.dwMinorVersion == 2) os_name = "windows 10"; std::cout << "os name: " << os_name << std::endl; std::cout << "os version: " << osver.dwMajorVersion << '.' << osver.dwMinorVersion << std::endl; } // ---- get cpu info ---- // // save 4 register variables DWORD deax; DWORD debx; DWORD decx; DWORD dedx; // init cpu in assembly language void initCpu(DWORD veax) { __asm { mov eax, veax cpuid mov deax, eax mov debx, ebx mov decx, ecx mov dedx, edx } } long getCpuFreq() { int start, over; _asm { RDTSC mov start, eax } Sleep(50); _asm { RDTSC mov over, eax } return (over - start) / 50000; } std::string getManufactureID() { char manuID[25]; memset(manuID, 0, sizeof(manuID)); initCpu(0); memcpy(manuID + 0, &debx, 4); // copy to array memcpy(manuID + 4, &dedx, 4); memcpy(manuID + 8, &decx, 4); return manuID; } std::string getCpuType() { const DWORD id = 0x80000002; // start 0x80000002 end to 0x80000004 char cpuType[49]; memset(cpuType, 0, sizeof(cpuType)); for (DWORD t = 0; t < 3; t++) { initCpu(id + t); memcpy(cpuType + 16 * t + 0, &deax, 4); memcpy(cpuType + 16 * t + 4, &debx, 4); memcpy(cpuType + 16 * t + 8, &decx, 4); memcpy(cpuType + 16 * t + 12, &dedx, 4); } return cpuType; } void getCpuInfo() { std::cout << "CPU main frequency: " << getCpuFreq() << "MHz" << std::endl; std::cout << "CPU manufacture: " << getManufactureID() << std::endl; std::cout << "CPU type: " << getCpuType() << std::endl; } // ---- get memory info ---- // void getMemoryInfo() { std::string memory_info; MEMORYSTATUSEX statusex; statusex.dwLength = sizeof(statusex); if (GlobalMemoryStatusEx(&statusex)) { unsigned long long total = 0, remain_total = 0, avl = 0, remain_avl = 0; double decimal_total = 0, decimal_avl = 0; remain_total = statusex.ullTotalPhys % GBYTES; total = statusex.ullTotalPhys / GBYTES; avl = statusex.ullAvailPhys / GBYTES; remain_avl = statusex.ullAvailPhys % GBYTES; if (remain_total > 0) decimal_total = (remain_total / MBYTES) / DKBYTES; if (remain_avl > 0) decimal_avl = (remain_avl / MBYTES) / DKBYTES; decimal_total += (double)total; decimal_avl += (double)avl; char buffer[kMaxInfoBuffer]; sprintf_s(buffer, kMaxInfoBuffer, "total %.2f GB (%.2f GB available)", decimal_total, decimal_avl); memory_info.append(buffer); } std::cout << memory_info << std::endl; } int main(int argc, char *argv[]) { std::cout << "===os information===" << std::endl; getOsInfo(); std::cout << "===cpu infomation===" << std::endl; getCpuInfo(); std::cout << "===memory information===" << std::endl; getMemoryInfo(); system("pause"); return 0; }
