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获取CPU信息

简单粗暴，从nginx截取代码编译运行

#include #include #include #include #include #include #include using namespace std; #if (i386)static inline void ngx_cpuid(uint32_t i, uint32_t *buf) {asm("mov %%ebx, %%esi;"" cpuid;"" mov %%eax, (%1);"" mov %%ebx, 4(%1);"" mov %%edx, 8(%1);"" mov %%ecx, 12(%1);"" mov %%esi, %%ebx;": "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx): "a" (i): "ecx", "edx", "esi", "memory");} #else #endif static inline void ngx_cpuid(uint32_t i, uint32_t *buf) {uint32_t eax, ebx, ecx, edx;asm("cpuid" : "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx) : "a" (i));buf[0] = eax;buf[1] = ebx;buf[2] = edx;buf[3] = ecx;} void ngx_cpuinfo() {uint32_t vbuf[5], cpu[4], model;vbuf[0] = 0;vbuf[1] = 0;vbuf[2] = 0;vbuf[3] = 0;vbuf[4] = 0;ngx_cpuid(0, vbuf);uint32_t vendor = (uint32_t) vbuf[1];if (vbuf[0] != 0) {ngx_cpuid(1, cpu);if (vendor == 0x0D0D0D0A) {cout << "GenuineIntel CPU" << endl;} else if (vendor == 0x4D4D4D4B) {cout << "AMD CPU" << endl;} else {cout << "Unknown CPU" << endl;}}} int main(int argc, char* argv) {ngx_cpuinfo();return 0;}

[root@izwz93atpalb56zydy9bpyz tmp]# g++ main.cc[root@izwz93atpalb56zydy9bpyz tmp]# ./a.outGenuineIntel CPU

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