github.com/afumu/libc@v0.0.6/musl/src/time/clock_getcpuclockid.c (about)

     1  #include <time.h>
     2  #include <errno.h>
     3  #include <unistd.h>
     4  #include "syscall.h"
     5  
     6  int clock_getcpuclockid(pid_t pid, clockid_t *clk)
     7  {
     8  	struct timespec ts;
     9  	clockid_t id = (-pid-1)*8U + 2;
    10  	int ret = __syscall(SYS_clock_getres, id, &ts);
    11  	if (ret) return -ret;
    12  	*clk = id;
    13  	return 0;
    14  }