src/time/timer_gettime.c

   1 #include <time.h>
   2 #include <limits.h>
   3 #include "pthread_impl.h"
   4
   5 int timer_gettime(timer_t t, struct itimerspec *val)
   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 #ifdef SYS_timer_gettime64
  12         int r = -ENOSYS;
  13         if (sizeof(time_t) > 4)
  14                 r = __syscall(SYS_timer_gettime64, t, val);
  15         if (SYS_timer_gettime == SYS_timer_gettime64 || r!=-ENOSYS)
  16                 return __syscall_ret(r);
  17         long val32[4];
  18         r = __syscall(SYS_timer_gettime, t, val32);
  19         if (!r) {
  20                 val->it_interval.tv_sec = val32[0];
  21                 val->it_interval.tv_nsec = val32[1];
  22                 val->it_value.tv_sec = val32[2];
  23                 val->it_value.tv_nsec = val32[3];
  24         }
  25         return __syscall_ret(r);
  26 #endif
  27         return syscall(SYS_timer_gettime, t, val);
  28 }