| David 'Digit' Turner | defd162 | 2010-09-26 22:29:14 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2008 The Android Open Source Project |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * * Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * * Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in |
| 12 | * the documentation and/or other materials provided with the |
| 13 | * distribution. |
| 14 | * |
| 15 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 16 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 17 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| 18 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| 19 | * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 20 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| 21 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| 22 | * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| 23 | * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| 24 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| 25 | * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 26 | * SUCH DAMAGE. |
| 27 | */ |
| Elliott Hughes | cac7b9d | 2013-10-23 09:48:29 -0700 | [diff] [blame] | 28 | |
| David 'Digit' Turner | defd162 | 2010-09-26 22:29:14 +0200 | [diff] [blame] | 29 | #ifndef _SYS_EVENTFD_H |
| 30 | #define _SYS_EVENTFD_H |
| 31 | |
| 32 | #include <sys/cdefs.h> |
| 33 | #include <fcntl.h> |
| 34 | |
| 35 | __BEGIN_DECLS |
| 36 | |
| Kito Cheng | 9b84824 | 2013-04-03 11:29:40 +0800 | [diff] [blame] | 37 | #define EFD_CLOEXEC O_CLOEXEC |
| 38 | #define EFD_NONBLOCK O_NONBLOCK |
| David 'Digit' Turner | defd162 | 2010-09-26 22:29:14 +0200 | [diff] [blame] | 39 | |
| 40 | /* type of event counter */ |
| Kito Cheng | 9b84824 | 2013-04-03 11:29:40 +0800 | [diff] [blame] | 41 | typedef uint64_t eventfd_t; |
| David 'Digit' Turner | defd162 | 2010-09-26 22:29:14 +0200 | [diff] [blame] | 42 | |
| Kito Cheng | 9b84824 | 2013-04-03 11:29:40 +0800 | [diff] [blame] | 43 | extern int eventfd(unsigned int initial_value, int flags); |
| David 'Digit' Turner | defd162 | 2010-09-26 22:29:14 +0200 | [diff] [blame] | 44 | |
| Kito Cheng | 9b84824 | 2013-04-03 11:29:40 +0800 | [diff] [blame] | 45 | extern int eventfd_read(int fd, eventfd_t* value); |
| 46 | extern int eventfd_write(int fd, eventfd_t value); |
| David 'Digit' Turner | defd162 | 2010-09-26 22:29:14 +0200 | [diff] [blame] | 47 | |
| 48 | __END_DECLS |
| 49 | |
| 50 | #endif /* _SYS_EVENTFD_H */ |