11 #define TFD_NONBLOCK O_NONBLOCK
12 #define TFD_CLOEXEC O_CLOEXEC
14 #define TFD_TIMER_ABSTIME 1
16 int timerfd_create(int, int);
17 int timerfd_settime(int, int, const struct itimerspec *, struct itimerspec *);
18 int timerfd_gettime(int, struct itimerspec *);