__cpuid 函数（Windows 平台系统库函数）

Linux 等价函数：

#include

unsigned int eax, ebx, ecx, edx;

__cpuid(0, eax, ebx, ecx, edx);

__cpuid(1, eax, ebx, ecx, edx);

# Windows 上面用法，可以通过WMI查询处理器信息确认操作系统格式化后的CPUID是否与下面获取到一致。

#include 
#include 
#include 

        std::string cpuid() noexcept
        {
            int s1, s2, s3, s4;

#if !_WIN32
            int sn[4];
            __cpuid(sn, 0);
            s1 = sn[0];
            s2 = sn[3];

            __cpuid(sn, 1);
            s3 = sn[0];
            s4 = sn[3];
#else
            __asm
            {
                mov eax, 00h
                xor edx, edx
                cpuid
                mov dword ptr[s1], eax
                mov dword ptr[s2], edx

                mov eax, 01h
                xor ecx, ecx
                xor edx, edx
                cpuid
                mov dword ptr[s3], eax
                mov dword ptr[s4], edx
            }
#endif

            // You can query all CPU processor instances using WQL in wbemtest, 
            // View the ProcessorId attribute of the processor instance MOF, 
            // And clarify the rules for the operating system CPUID to obtain and format as text.

            char buf[40];
            snprintf(buf, sizeof(buf), "%016llX %016llX", ((int64_t)s4 << 32 | (int64_t)s3), ((int64_t)s2 << 32 | (int64_t)s1));
            return buf;
        }