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4868f4d217
A 'deferred callback' is just a function that we've queued in the event base. This ability is needed for some mt stuff, and for complex callback chains. For internal use only. svn:r1150
57 lines
2.0 KiB
C
57 lines
2.0 KiB
C
/*
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* Copyright (c) 2009 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 _DEFER_INTERNAL_H_
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#define _DEFER_INTERNAL_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "event-config.h"
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#include <sys/queue.h>
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struct deferred_cb;
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typedef void (*deferred_cb_fn)(struct deferred_cb *, void *);
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struct deferred_cb {
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TAILQ_ENTRY (deferred_cb) (cb_next);
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unsigned queued : 1;
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deferred_cb_fn cb;
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void *arg;
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};
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void event_deferred_cb_init(struct deferred_cb *, deferred_cb_fn, void *);
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void event_deferred_cb_cancel(struct event_base *, struct deferred_cb *);
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void event_deferred_cb_schedule(struct event_base *, struct deferred_cb *);
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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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