1 /* $OpenBSD: event-internal.h,v 1.8 2014/10/15 22:34:44 bluhm Exp $ */ 2 3 /* 4 * Copyright (c) 2000-2004 Niels Provos <provos@citi.umich.edu> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 #ifndef _EVENT_INTERNAL_H_ 30 #define _EVENT_INTERNAL_H_ 31 32 #ifdef __cplusplus 33 extern "C" { 34 #endif 35 36 #include "min_heap.h" 37 #include "evsignal.h" 38 39 struct eventop { 40 const char *name; 41 void *(*init)(struct event_base *); 42 int (*add)(void *, struct event *); 43 int (*del)(void *, struct event *); 44 int (*dispatch)(struct event_base *, void *, struct timeval *); 45 void (*dealloc)(struct event_base *, void *); 46 /* set if we need to reinitialize the event base */ 47 int need_reinit; 48 }; 49 50 struct event_base { 51 const struct eventop *evsel; 52 void *evbase; 53 int event_count; /* counts number of total events */ 54 int event_count_active; /* counts number of active events */ 55 56 int event_gotterm; /* Set to terminate loop */ 57 int event_break; /* Set to terminate loop immediately */ 58 59 /* active event management */ 60 struct event_list **activequeues; 61 int nactivequeues; 62 63 /* signal handling info */ 64 struct evsignal_info sig; 65 66 struct event_list eventqueue; 67 struct timeval event_tv; 68 69 struct min_heap timeheap; 70 71 struct timeval tv_cache; 72 }; 73 74 int _evsignal_set_handler(struct event_base *base, int evsignal, 75 void (*fn)(int)); 76 int _evsignal_restore_handler(struct event_base *base, int evsignal); 77 78 /* defined in evutil.c */ 79 const char *evutil_getenv(const char *varname); 80 81 #ifdef __cplusplus 82 } 83 #endif 84 85 #endif /* _EVENT_INTERNAL_H_ */ 86