随笔 - 获取 CPU 信息

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get_cpu.cppview raw
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#include <cpuid.h>
#include <bits/stdc++.h>
using namespace std;
char brand[0x40];
unsigned int cpuinfo[4] = {0, 0, 0, 0};
int main() {
  __cpuid(0x80000000, cpuinfo[0], cpuinfo[1], cpuinfo[2], cpuinfo[3]);
  unsigned int nexids = cpuinfo[0];
  for (unsigned int i = 0x80000000; i <= nexids; i++) {
    __cpuid(i, cpuinfo[0], cpuinfo[1], cpuinfo[2], cpuinfo[3]);
    if (i == 0x80000002) memcpy(brand, cpuinfo, sizeof(cpuinfo));
    if (i == 0x80000003) memcpy(brand + 16, cpuinfo, sizeof(cpuinfo));
    if (i == 0x80000004) memcpy(brand + 32, cpuinfo, sizeof(cpuinfo));
  }
  cout << brand << endl;
}