1/* 2 * event.h 3 */ 4 5/*- 6 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 7 * 8 * Copyright (c) 2009 Maksim Yevmenkin <m_evmenkin@yahoo.com> 9 * All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33/* $FreeBSD$ */ 34 35/* 36 * Hack to provide libevent (see devel/libevent port) like API. 37 * Should be removed if FreeBSD ever decides to import libevent into base. 38 */ 39 40#ifndef _EVENT_H_ 41#define _EVENT_H_ 1 42 43#define EV_READ 0x02 44#define EV_WRITE 0x04 45#define EV_PERSIST 0x10 /* Persistent event */ 46#define EV_PENDING (1 << 13) /* internal use only! */ 47#define EV_HAS_TIMEOUT (1 << 14) /* internal use only! */ 48#define EV_CURRENT (1 << 15) /* internal use only! */ 49 50struct event 51{ 52 int fd; 53 short flags; 54 void (*cb)(int, short, void *); 55 void *cbarg; 56 struct timeval timeout; 57 struct timeval expire; 58 59#ifdef EVENT_DEBUG 60 char const *files[3]; 61 int lines[3]; 62#endif 63 64 TAILQ_ENTRY(event) next; 65}; 66 67void event_init (void); 68int event_dispatch (void); 69 70void __event_set (struct event *, int, short, 71 void (*)(int, short, void *), void *); 72int __event_add (struct event *, struct timeval const *); 73int __event_del (struct event *); 74 75#ifdef EVENT_DEBUG 76#define event_log_err(fmt, args...) syslog(LOG_ERR, fmt, ##args) 77#define event_log_info(fmt, args...) syslog(LOG_INFO, fmt, ##args) 78#define event_log_notice(fmt, args...) syslog(LOG_NOTICE, fmt, ##args) 79#define event_log_debug(fmt, args...) syslog(LOG_DEBUG, fmt, ##args) 80 81#define event_set(ev, fd, flags, cb, cbarg) \ 82 _event_set(__FILE__, __LINE__, ev, fd, flags, cb, cbarg) 83#define event_add(ev, timeout) \ 84 _event_add(__FILE__, __LINE__, ev, timeout) 85#define event_del(ev) \ 86 _event_del(__FILE__, __LINE__, ev) 87 88#define evtimer_set(ev, cb, cbarg) \ 89 _event_set(__FILE__, __LINE__, ev, -1, 0, cb, cbarg) 90#define evtimer_add(ev, timeout) \ 91 _event_add(__FILE__, __LINE__, ev, timeout) 92 93static inline void 94_event_set(char const *file, int line, struct event *ev, int fd, short flags, 95 void (*cb)(int, short, void *), void *cbarg) 96{ 97 event_log_debug("set %s:%d ev=%p, fd=%d, flags=%#x, cb=%p, cbarg=%p", 98 file, line, ev, fd, flags, cb, cbarg); 99 100 ev->files[0] = file; 101 ev->lines[0] = line; 102 103 __event_set(ev, fd, flags, cb, cbarg); 104} 105 106static inline int 107_event_add(char const *file, int line, struct event *ev, 108 struct timeval const *timeout) { 109 event_log_debug("add %s:%d ev=%p, fd=%d, flags=%#x, cb=%p, cbarg=%p, " \ 110 "timeout=%p", file, line, ev, ev->fd, ev->flags, ev->cb, 111 ev->cbarg, timeout); 112 113 ev->files[1] = file; 114 ev->lines[1] = line; 115 116 return (__event_add(ev, timeout)); 117} 118 119static inline int 120_event_del(char const *file, int line, struct event *ev) 121{ 122 event_log_debug("del %s:%d ev=%p, fd=%d, flags=%#x, cb=%p, cbarg=%p", 123 file, line, ev, ev->fd, ev->flags, ev->cb, ev->cbarg); 124 125 ev->files[2] = file; 126 ev->lines[2] = line; 127 128 return (__event_del(ev)); 129} 130#else 131#define event_log_err(fmt, args...) 132#define event_log_info(fmt, args...) 133#define event_log_notice(fmt, args...) 134#define event_log_debug(fmt, args...) 135 136#define event_set(ev, fd, flags, cb, cbarg) \ 137 __event_set(ev, fd, flags, cb, cbarg) 138#define event_add(ev, timeout) \ 139 __event_add(ev, timeout) 140#define event_del(ev) \ 141 __event_del(ev) 142 143#define evtimer_set(ev, cb, cbarg) \ 144 __event_set(ev, -1, 0, cb, cbarg) 145#define evtimer_add(ev, timeout) \ 146 __event_add(ev, timeout) 147#endif /* EVENT_DEBUG */ 148 149#endif /* ndef _EVENT_H_ */ 150