118 lines
4.1 KiB
C
118 lines
4.1 KiB
C
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/* $NetBSD: bufferevent_struct.h,v 1.1.1.1 2013/04/11 16:43:34 christos Exp $ */
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/*
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* Copyright (c) 2000-2007 Niels Provos <provos@citi.umich.edu>
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* Copyright (c) 2007-2012 Niels Provos and Nick Mathewson
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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 _EVENT2_BUFFEREVENT_STRUCT_H_
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#define _EVENT2_BUFFEREVENT_STRUCT_H_
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/** @file event2/bufferevent_struct.h
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Data structures for bufferevents. Using these structures may hurt forward
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compatibility with later versions of Libevent: be careful!
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@deprecated Use of bufferevent_struct.h is completely deprecated; these
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structures are only exposed for backward compatibility with programs
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written before Libevent 2.0 that used them.
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <event2/event-config.h>
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#ifdef _EVENT_HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#ifdef _EVENT_HAVE_SYS_TIME_H
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#include <sys/time.h>
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#endif
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/* For int types. */
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#include <event2/util.h>
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/* For struct event */
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#include <event2/event_struct.h>
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struct event_watermark {
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size_t low;
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size_t high;
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};
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/**
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Shared implementation of a bufferevent.
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This type is exposed only because it was exposed in previous versions,
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and some people's code may rely on manipulating it. Otherwise, you
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should really not rely on the layout, size, or contents of this structure:
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it is fairly volatile, and WILL change in future versions of the code.
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**/
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struct bufferevent {
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/** Event base for which this bufferevent was created. */
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struct event_base *ev_base;
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/** Pointer to a table of function pointers to set up how this
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bufferevent behaves. */
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const struct bufferevent_ops *be_ops;
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/** A read event that triggers when a timeout has happened or a socket
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is ready to read data. Only used by some subtypes of
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bufferevent. */
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struct event ev_read;
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/** A write event that triggers when a timeout has happened or a socket
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is ready to write data. Only used by some subtypes of
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bufferevent. */
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struct event ev_write;
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/** An input buffer. Only the bufferevent is allowed to add data to
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this buffer, though the user is allowed to drain it. */
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struct evbuffer *input;
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/** An input buffer. Only the bufferevent is allowed to drain data
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from this buffer, though the user is allowed to add it. */
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struct evbuffer *output;
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struct event_watermark wm_read;
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struct event_watermark wm_write;
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bufferevent_data_cb readcb;
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bufferevent_data_cb writecb;
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/* This should be called 'eventcb', but renaming it would break
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* backward compatibility */
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bufferevent_event_cb errorcb;
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void *cbarg;
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struct timeval timeout_read;
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struct timeval timeout_write;
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/** Events that are currently enabled: currently EV_READ and EV_WRITE
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are supported. */
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short enabled;
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};
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#ifdef __cplusplus
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}
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#endif
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#endif /* _EVENT2_BUFFEREVENT_STRUCT_H_ */
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