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git.ipfire.org Git - thirdparty/glibc.git/blob - sysdeps/unix/sysv/linux/sys/eventfd.h
1 /* Copyright (C) 2007-2020 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, see
16 <https://www.gnu.org/licenses/>. */
18 #ifndef _SYS_EVENTFD_H
19 #define _SYS_EVENTFD_H 1
23 /* Get the platform-dependent flags. */
24 #include <bits/eventfd.h>
26 /* Type for event counter. */
27 typedef uint64_t eventfd_t
;
32 /* Return file descriptor for generic event channel. Set initial
34 extern int eventfd (unsigned int __count
, int __flags
) __THROW
;
36 /* Read event counter and possibly wait for events. */
37 extern int eventfd_read (int __fd
, eventfd_t
*__value
);
39 /* Increment event counter. */
40 extern int eventfd_write (int __fd
, eventfd_t __value
);
44 #endif /* sys/eventfd.h */