/* $NetBSD: defer-internal.h,v 1.1.1.3 2021/04/07 02:43:14 christos Exp $ */ /* * Copyright (c) 2009-2012 Niels Provos and Nick Mathewson * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef DEFER_INTERNAL_H_INCLUDED_ #define DEFER_INTERNAL_H_INCLUDED_ #ifdef __cplusplus extern "C" { #endif #include "event2/event-config.h" #include "evconfig-private.h" #include struct event_callback; typedef void (*deferred_cb_fn)(struct event_callback *, void *); /** Initialize an empty, non-pending event_callback. @param deferred The struct event_callback structure to initialize. @param priority The priority that the callback should run at. @param cb The function to run when the struct event_callback executes. @param arg The function's second argument. */ EVENT2_EXPORT_SYMBOL void event_deferred_cb_init_(struct event_callback *, ev_uint8_t, deferred_cb_fn, void *); /** Change the priority of a non-pending event_callback. */ void event_deferred_cb_set_priority_(struct event_callback *, ev_uint8_t); /** Cancel a struct event_callback if it is currently scheduled in an event_base. */ EVENT2_EXPORT_SYMBOL void event_deferred_cb_cancel_(struct event_base *, struct event_callback *); /** Activate a struct event_callback if it is not currently scheduled in an event_base. Return true if it was not previously scheduled. */ EVENT2_EXPORT_SYMBOL int event_deferred_cb_schedule_(struct event_base *, struct event_callback *); #ifdef __cplusplus } #endif #endif /* EVENT_INTERNAL_H_INCLUDED_ */