c、c++、汇编实现CPU 的性能检测

c、c++、汇编实现CPU 的性能检测 The CPUID sample provides a routine that uses the CPUID instruction to determine the capabilities of the CPU being run. The sample provides the function int _cpuid(_p_info *pinfo), which returns data about the CPU. The int return value is a bitmask of flags for major processor features. The bits that might be set are: •#define _CPU_FEATURE_MMX 0x0001 •#define _CPU_FEATURE_SSE 0x0002 •#define _CPU_FEATURE_SSE2 0x0004 •#define _CPU_FEATURE_3DNOW 0x0008