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

     1  #include <time.h>
     2  #include <limits.h>
     3  #include "pthread_impl.h"
     4  
     5  int timer_getoverrun(timer_t t)
     6  {
     7  	if ((intptr_t)t < 0) {
     8  		pthread_t td = (void *)((uintptr_t)t << 1);
     9  		t = (void *)(uintptr_t)(td->timer_id & INT_MAX);
    10  	}
    11  	return syscall(SYS_timer_getoverrun, t);
    12  }