2 * Copyright (c) 2009-2012 Niels Provos and Nick Mathewson
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * 3. The name of the author may not be used to endorse or promote products
13 * derived from this software without specific prior written permission.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 #ifndef DEFER_INTERNAL_H_INCLUDED_
27 #define DEFER_INTERNAL_H_INCLUDED_
33 #include "event2/event-config.h"
34 #include "evconfig-private.h"
36 #include <sys/queue.h>
38 struct event_callback;
39 typedef void (*deferred_cb_fn)(struct event_callback *, void *);
42 Initialize an empty, non-pending event_callback.
44 @param deferred The struct event_callback structure to initialize.
45 @param priority The priority that the callback should run at.
46 @param cb The function to run when the struct event_callback executes.
47 @param arg The function's second argument.
50 void event_deferred_cb_init_(struct event_callback *, ev_uint8_t, deferred_cb_fn, void *);
52 Change the priority of a non-pending event_callback.
54 void event_deferred_cb_set_priority_(struct event_callback *, ev_uint8_t);
56 Cancel a struct event_callback if it is currently scheduled in an event_base.
59 void event_deferred_cb_cancel_(struct event_base *, struct event_callback *);
61 Activate a struct event_callback if it is not currently scheduled in an event_base.
63 Return true if it was not previously scheduled.
66 int event_deferred_cb_schedule_(struct event_base *, struct event_callback *);
72 #endif /* EVENT_INTERNAL_H_INCLUDED_ */