Use tsc on x86 Linux / Linux Kernel / Windows.
Install
The library is header only. You can also link PerfRdtsc as a cmake interface library.
add_subdirectory(vendor/rdtsc)API Usage
#include <perfApi/rdtsc.h>
int runApp() {
int64_t cpu_cycle = perfApiRdtsc(); // or precisely perfApiRdCycle()
int64_t cpu_cycle = perfApiRdCycle();
int64_t nanosecond = perfApiTsc2ns(cpu_cycle); // offline translation
int64_t nanosecond = perfApiRdns(); // sampled by tsc instruction
int64_t nanosecond = perfApiRdsysns(); // sampled by kernel syscall
return 0;
}
int main() { perfApiTscInit(0); return runApp(); }