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- /* Copyright (C) 2007, 2008, 2009 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
-
- #ifndef _SYS_EVENTFD_H
- #define _SYS_EVENTFD_H 1
-
- #include <stdint.h>
-
-
- /* Type for event counter. */
- typedef uint64_t eventfd_t;
-
- /* Flags for signalfd. */
- enum
- {
- EFD_SEMAPHORE = 1,
- #define EFD_SEMAPHORE EFD_SEMAPHORE
- EFD_CLOEXEC = 02000000,
- #define EFD_CLOEXEC EFD_CLOEXEC
- EFD_NONBLOCK = 04000
- #define EFD_NONBLOCK EFD_NONBLOCK
- };
-
-
- __BEGIN_DECLS
-
- /* Return file descriptor for generic event channel. Set initial
- value to COUNT. */
- extern int eventfd (int __count, int __flags) __THROW;
-
- /* Read event counter and possibly wait for events. */
- extern int eventfd_read (int __fd, eventfd_t *__value);
-
- /* Increment event counter. */
- extern int eventfd_write (int __fd, eventfd_t __value);
-
- __END_DECLS
-
- #endif /* sys/eventfd.h */
-