1 1.3 ryoon /* $NetBSD: eventfd.h,v 1.3 2021/09/21 13:51:46 ryoon Exp $ */ 2 1.2 thorpej 3 1.2 thorpej /*- 4 1.2 thorpej * Copyright (c) 2020 The NetBSD Foundation, Inc. 5 1.2 thorpej * All rights reserved. 6 1.2 thorpej * 7 1.2 thorpej * This code is derived from software contributed to The NetBSD Foundation 8 1.2 thorpej * by Jason R. Thorpe. 9 1.2 thorpej * 10 1.2 thorpej * Redistribution and use in source and binary forms, with or without 11 1.2 thorpej * modification, are permitted provided that the following conditions 12 1.2 thorpej * are met: 13 1.2 thorpej * 1. Redistributions of source code must retain the above copyright 14 1.2 thorpej * notice, this list of conditions and the following disclaimer. 15 1.2 thorpej * 2. Redistributions in binary form must reproduce the above copyright 16 1.2 thorpej * notice, this list of conditions and the following disclaimer in the 17 1.2 thorpej * documentation and/or other materials provided with the distribution. 18 1.2 thorpej * 19 1.2 thorpej * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.2 thorpej * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.2 thorpej * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.2 thorpej * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.2 thorpej * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.2 thorpej * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.2 thorpej * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.2 thorpej * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.2 thorpej * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.2 thorpej * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.2 thorpej * POSSIBILITY OF SUCH DAMAGE. 30 1.2 thorpej */ 31 1.2 thorpej 32 1.2 thorpej #ifndef _SYS_EVENTFD_H_ 33 1.2 thorpej #define _SYS_EVENTFD_H_ 34 1.2 thorpej 35 1.2 thorpej #include <sys/fcntl.h> 36 1.2 thorpej 37 1.2 thorpej /* 38 1.2 thorpej * Definitions for eventfd(2). This implementation is API compatible 39 1.2 thorpej * with the Linux eventfd(2) interface. 40 1.2 thorpej */ 41 1.2 thorpej 42 1.2 thorpej typedef uint64_t eventfd_t; 43 1.2 thorpej 44 1.2 thorpej #define EFD_SEMAPHORE O_RDWR 45 1.2 thorpej #define EFD_CLOEXEC O_CLOEXEC 46 1.2 thorpej #define EFD_NONBLOCK O_NONBLOCK 47 1.2 thorpej 48 1.2 thorpej #ifdef _KERNEL 49 1.2 thorpej struct lwp; 50 1.2 thorpej int do_eventfd(struct lwp *, unsigned int, int, register_t *); 51 1.2 thorpej #else /* ! _KERNEL */ 52 1.3 ryoon __BEGIN_DECLS 53 1.2 thorpej int eventfd(unsigned int, int); 54 1.2 thorpej int eventfd_read(int, eventfd_t *); 55 1.2 thorpej int eventfd_write(int, eventfd_t); 56 1.3 ryoon __END_DECLS 57 1.2 thorpej #endif /* _KERNEL */ 58 1.2 thorpej 59 1.2 thorpej #endif /* _SYS_EVENTFD_H_ */ 60
Indexes created Sat Sep 20 22:09:52 GMT 2025