2 * include/linux/timerfd.h
4 * Copyright (C) 2007 Davide Libenzi <davidel@xmailserver.org>
8 #ifndef _LINUX_TIMERFD_H
9 #define _LINUX_TIMERFD_H
11 /* For O_CLOEXEC and O_NONBLOCK */
12 #include <linux/fcntl.h>
15 * CAREFUL: Check include/asm-generic/fcntl.h when defining
16 * new flags, since they might collide with O_* ones. We want
17 * to re-use O_* flags that couldn't possibly have a meaning
18 * from eventfd, in order to leave a free define-space for
21 #define TFD_TIMER_ABSTIME (1 << 0)
22 #define TFD_TIMER_CANCEL_ON_SET (1 << 1)
23 #define TFD_CLOEXEC O_CLOEXEC
24 #define TFD_NONBLOCK O_NONBLOCK
26 #define TFD_SHARED_FCNTL_FLAGS (TFD_CLOEXEC | TFD_NONBLOCK)
27 /* Flags for timerfd_create. */
28 #define TFD_CREATE_FLAGS TFD_SHARED_FCNTL_FLAGS
29 /* Flags for timerfd_settime. */
30 #define TFD_SETTIME_FLAGS (TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET)
32 #endif /* _LINUX_TIMERFD_H */