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| 1 /* | |
| 2 * Copyright (c) 2000-2004 Niels Provos <provos@citi.umich.edu> | |
| 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 * 1. Redistributions of source code must retain the above copyright | |
| 9 * notice, this list of conditions and the following disclaimer. | |
| 10 * 2. Redistributions in binary form must reproduce the above copyright | |
| 11 * notice, this list of conditions and the following disclaimer in the | |
| 12 * documentation and/or other materials provided with the distribution. | |
| 13 * 3. The name of the author may not be used to endorse or promote products | |
| 14 * derived from this software without specific prior written permission. | |
| 15 * | |
| 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |
| 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |
| 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
| 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
| 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
| 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
| 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 26 */ | |
| 27 #ifndef _EVENT_INTERNAL_H_ | |
| 28 #define _EVENT_INTERNAL_H_ | |
| 29 | |
| 30 #ifdef __cplusplus | |
| 31 extern "C" { | |
| 32 #endif | |
| 33 | |
| 34 #include "config.h" | |
| 35 #include "min_heap.h" | |
| 36 #include "evsignal.h" | |
| 37 | |
| 38 struct eventop { | |
| 39 const char *name; | |
| 40 void *(*init)(struct event_base *); | |
| 41 int (*add)(void *, struct event *); | |
| 42 int (*del)(void *, struct event *); | |
| 43 int (*dispatch)(struct event_base *, void *, struct timeval *); | |
| 44 void (*dealloc)(struct event_base *, void *); | |
| 45 /* set if we need to reinitialize the event base */ | |
| 46 int need_reinit; | |
| 47 }; | |
| 48 | |
| 49 struct event_base { | |
| 50 const struct eventop *evsel; | |
| 51 void *evbase; | |
| 52 int event_count; /* counts number of total events */ | |
| 53 int event_count_active; /* counts number of active events */ | |
| 54 | |
| 55 int event_gotterm; /* Set to terminate loop */ | |
| 56 int event_break; /* Set to terminate loop immediately */ | |
| 57 | |
| 58 /* active event management */ | |
| 59 struct event_list **activequeues; | |
| 60 int nactivequeues; | |
| 61 | |
| 62 /* signal handling info */ | |
| 63 struct evsignal_info sig; | |
| 64 | |
| 65 struct event_list eventqueue; | |
| 66 struct timeval event_tv; | |
| 67 | |
| 68 struct min_heap timeheap; | |
| 69 | |
| 70 struct timeval tv_cache; | |
| 71 }; | |
| 72 | |
| 73 /* Internal use only: Functions that might be missing from <sys/queue.h> */ | |
| 74 #ifndef HAVE_TAILQFOREACH | |
| 75 #define TAILQ_FIRST(head) ((head)->tqh_first) | |
| 76 #define TAILQ_END(head) NULL | |
| 77 #define TAILQ_NEXT(elm, field) ((elm)->field.tqe_next) | |
| 78 #define TAILQ_FOREACH(var, head, field) \ | |
| 79 for((var) = TAILQ_FIRST(head); \ | |
| 80 (var) != TAILQ_END(head); \ | |
| 81 (var) = TAILQ_NEXT(var, field)) | |
| 82 #define TAILQ_INSERT_BEFORE(listelm, elm, field) do { \ | |
| 83 (elm)->field.tqe_prev = (listelm)->field.tqe_prev; \ | |
| 84 (elm)->field.tqe_next = (listelm); \ | |
| 85 *(listelm)->field.tqe_prev = (elm); \ | |
| 86 (listelm)->field.tqe_prev = &(elm)->field.tqe_next; \ | |
| 87 } while (0) | |
| 88 #endif /* TAILQ_FOREACH */ | |
| 89 | |
| 90 int _evsignal_set_handler(struct event_base *base, int evsignal, | |
| 91 void (*fn)(int)); | |
| 92 int _evsignal_restore_handler(struct event_base *base, int evsignal); | |
| 93 | |
| 94 /* defined in evutil.c */ | |
| 95 const char *evutil_getenv(const char *varname); | |
| 96 | |
| 97 #ifdef __cplusplus | |
| 98 } | |
| 99 #endif | |
| 100 | |
| 101 #endif /* _EVENT_INTERNAL_H_ */ | |
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Chromium Code Reviews
Issue 1531573008:
move libevent into base (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master