1 /* 2 * event.h 3 */ 4 5 /*- 6 * SPDX-License-Identifier: BSD-2-Clause 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 34 /* 35 * Hack to provide libevent (see devel/libevent port) like API. 36 * Should be removed if FreeBSD ever decides to import libevent into base. 37 */ 38 39 #ifndef _EVENT_H_ 40 #define _EVENT_H_ 1 41 42 #define EV_READ 0x02 43 #define EV_WRITE 0x04 44 #define EV_PERSIST 0x10 /* Persistent event */ 45 #define EV_PENDING (1 << 13) /* internal use only! */ 46 #define EV_HAS_TIMEOUT (1 << 14) /* internal use only! */ 47 #define EV_CURRENT (1 << 15) /* internal use only! */ 48 49 struct event 50 { 51 int fd; 52 short flags; 53 void (*cb)(int, short, void *); 54 void *cbarg; 55 struct timeval timeout; 56 struct timeval expire; 57 58 #ifdef EVENT_DEBUG 59 char const *files[3]; 60 int lines[3]; 61 #endif 62 63 TAILQ_ENTRY(event) next; 64 }; 65 66 void event_init (void); 67 int event_dispatch (void); 68 69 void __event_set (struct event *, int, short, 70 void (*)(int, short, void *), void *); 71 int __event_add (struct event *, struct timeval const *); 72 int __event_del (struct event *); 73 74 #ifdef EVENT_DEBUG 75 #define event_log_err(fmt, args...) syslog(LOG_ERR, fmt, ##args) 76 #define event_log_info(fmt, args...) syslog(LOG_INFO, fmt, ##args) 77 #define event_log_notice(fmt, args...) syslog(LOG_NOTICE, fmt, ##args) 78 #define event_log_debug(fmt, args...) syslog(LOG_DEBUG, fmt, ##args) 79 80 #define event_set(ev, fd, flags, cb, cbarg) \ 81 _event_set(__FILE__, __LINE__, ev, fd, flags, cb, cbarg) 82 #define event_add(ev, timeout) \ 83 _event_add(__FILE__, __LINE__, ev, timeout) 84 #define event_del(ev) \ 85 _event_del(__FILE__, __LINE__, ev) 86 87 #define evtimer_set(ev, cb, cbarg) \ 88 _event_set(__FILE__, __LINE__, ev, -1, 0, cb, cbarg) 89 #define evtimer_add(ev, timeout) \ 90 _event_add(__FILE__, __LINE__, ev, timeout) 91 92 static inline void 93 _event_set(char const *file, int line, struct event *ev, int fd, short flags, 94 void (*cb)(int, short, void *), void *cbarg) 95 { 96 event_log_debug("set %s:%d ev=%p, fd=%d, flags=%#x, cb=%p, cbarg=%p", 97 file, line, ev, fd, flags, cb, cbarg); 98 99 ev->files[0] = file; 100 ev->lines[0] = line; 101 102 __event_set(ev, fd, flags, cb, cbarg); 103 } 104 105 static inline int 106 _event_add(char const *file, int line, struct event *ev, 107 struct timeval const *timeout) { 108 event_log_debug("add %s:%d ev=%p, fd=%d, flags=%#x, cb=%p, cbarg=%p, " \ 109 "timeout=%p", file, line, ev, ev->fd, ev->flags, ev->cb, 110 ev->cbarg, timeout); 111 112 ev->files[1] = file; 113 ev->lines[1] = line; 114 115 return (__event_add(ev, timeout)); 116 } 117 118 static inline int 119 _event_del(char const *file, int line, struct event *ev) 120 { 121 event_log_debug("del %s:%d ev=%p, fd=%d, flags=%#x, cb=%p, cbarg=%p", 122 file, line, ev, ev->fd, ev->flags, ev->cb, ev->cbarg); 123 124 ev->files[2] = file; 125 ev->lines[2] = line; 126 127 return (__event_del(ev)); 128 } 129 #else 130 #define event_log_err(fmt, args...) 131 #define event_log_info(fmt, args...) 132 #define event_log_notice(fmt, args...) 133 #define event_log_debug(fmt, args...) 134 135 #define event_set(ev, fd, flags, cb, cbarg) \ 136 __event_set(ev, fd, flags, cb, cbarg) 137 #define event_add(ev, timeout) \ 138 __event_add(ev, timeout) 139 #define event_del(ev) \ 140 __event_del(ev) 141 142 #define evtimer_set(ev, cb, cbarg) \ 143 __event_set(ev, -1, 0, cb, cbarg) 144 #define evtimer_add(ev, timeout) \ 145 __event_add(ev, timeout) 146 #endif /* EVENT_DEBUG */ 147 148 #endif /* ndef _EVENT_H_ */ 149