1 /* Copyright (C) 2007, 2008, 2009 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, write to the Free
16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19 #ifndef _SYS_EVENTFD_H
20 #define _SYS_EVENTFD_H 1
25 /* Type for event counter. */
26 typedef uint64_t eventfd_t
;
28 /* Flags for signalfd. */
31 EFD_CLOEXEC
= 02000000,
32 #define EFD_CLOEXEC EFD_CLOEXEC
34 #define EFD_NONBLOCK EFD_NONBLOCK
40 /* Return file descriptor for generic event channel. Set initial
42 extern int eventfd (int __count
, int __flags
) __THROW
;
44 /* Read event counter and possibly wait for events. */
45 extern int eventfd_read (int __fd
, eventfd_t
*__value
);
47 /* Increment event counter. */
48 extern int eventfd_write (int __fd
, eventfd_t __value
);
52 #endif /* sys/eventfd.h */