102 строки
3.4 KiB
C
102 строки
3.4 KiB
C
/*
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* Copyright (c) 2000-2004 Niels Provos <provos@citi.umich.edu>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _EVENT_INTERNAL_H_
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#define _EVENT_INTERNAL_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "opal_config.h"
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#include "min_heap.h"
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#include "evsignal.h"
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struct eventop {
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const char *name;
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void *(*init)(struct event_base *);
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int (*add)(void *, struct event *);
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int (*del)(void *, struct event *);
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int (*dispatch)(struct event_base *, void *, struct timeval *);
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void (*dealloc)(struct event_base *, void *);
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/* set if we need to reinitialize the event base */
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int need_reinit;
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};
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struct event_base {
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const struct eventop *evsel;
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void *evbase;
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int event_count; /* counts number of total events */
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int event_count_active; /* counts number of active events */
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int event_gotterm; /* Set to terminate loop */
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int event_break; /* Set to terminate loop immediately */
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/* active event management */
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struct event_list **activequeues;
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int nactivequeues;
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/* signal handling info */
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struct evsignal_info sig;
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struct event_list eventqueue;
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struct timeval event_tv;
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struct min_heap timeheap;
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struct timeval tv_cache;
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};
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/* Internal use only: Functions that might be missing from <sys/queue.h> */
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#ifndef HAVE_TAILQFOREACH
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#define TAILQ_FIRST(head) ((head)->tqh_first)
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#define TAILQ_END(head) NULL
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#define TAILQ_NEXT(elm, field) ((elm)->field.tqe_next)
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#define TAILQ_FOREACH(var, head, field) \
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for((var) = TAILQ_FIRST(head); \
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(var) != TAILQ_END(head); \
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(var) = TAILQ_NEXT(var, field))
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#define TAILQ_INSERT_BEFORE(listelm, elm, field) do { \
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(elm)->field.tqe_prev = (listelm)->field.tqe_prev; \
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(elm)->field.tqe_next = (listelm); \
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*(listelm)->field.tqe_prev = (elm); \
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(listelm)->field.tqe_prev = &(elm)->field.tqe_next; \
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} while (0)
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#endif /* TAILQ_FOREACH */
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int _evsignal_set_handler(struct event_base *base, int evsignal,
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void (*fn)(int));
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int _evsignal_restore_handler(struct event_base *base, int evsignal);
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/* defined in evutil.c */
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const char *evutil_getenv(const char *varname);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _EVENT_INTERNAL_H_ */
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