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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 |
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