1 /* 2 * include/linux/timerfd.h 3 * 4 * Copyright (C) 2007 Davide Libenzi <davidel@xmailserver.org> 5 * 6 */ 7 8 #ifndef _LINUX_TIMERFD_H 9 #define _LINUX_TIMERFD_H 10 11 /* For O_CLOEXEC and O_NONBLOCK */ 12 #include <linux/fcntl.h> 13 14 /* 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 19 * shared O_* flags. 20 */ 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 25 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) 31 32 #endif /* _LINUX_TIMERFD_H */ 33