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a85b5759f3
These files were pulled from the 1.6.3 release tarball. This new version builds against OpenSSL version 1.1 which will be the default in the new Debian Stable which is due to be released RealSoonNow (tm).
127 lines
5.1 KiB
C
127 lines
5.1 KiB
C
/*
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* util/ub_event.h - indirection layer for pluggable events
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*
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* Copyright (c) 2007, NLnet Labs. All rights reserved.
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*
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* This software is open source.
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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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*
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* Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* Neither the name of the NLNET LABS nor the names of its contributors may
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* be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* \file
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*
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* This file contains prototypes for event loop functions.
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*
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*/
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#ifndef UB_EVENT_H
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#define UB_EVENT_H
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struct ub_event_base;
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struct ub_event;
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struct comm_base;
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struct event_base;
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/** event timeout */
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#define UB_EV_TIMEOUT 0x01
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/** event fd readable */
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#define UB_EV_READ 0x02
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/** event fd writable */
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#define UB_EV_WRITE 0x04
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/** event signal */
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#define UB_EV_SIGNAL 0x08
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/** event must persist */
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#define UB_EV_PERSIST 0x10
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/** Returns event-base type. Could be "mini-event", "winsock-event" for the
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* daemon compile, and will be "pluggable-event<PACKAGE_VERSION>" for
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* libunbound.
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*/
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const char* ub_event_get_version(void);
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/** Return the name, system and method for the pluggable event base */
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void ub_get_event_sys(struct ub_event_base*, const char** n, const char** s,
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const char** m);
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/** Return a default event base. In the deamon thess will be the only event
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* bases used.
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*/
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struct ub_event_base* ub_default_event_base(int, time_t*, struct timeval*);
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/** Return an ub_event_base constructed for the given libevent event base */
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struct ub_event_base* ub_libevent_event_base(struct event_base*);
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/** Return the libevent base underlying the given ub_event_base. Will return
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* NULL when the ub_event_base does not have an underlying libevent event base
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*/
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struct event_base* ub_libevent_get_event_base(struct ub_event_base*);
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/** Free event base. Free events yourself */
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void ub_event_base_free(struct ub_event_base*);
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/** Run the event base */
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int ub_event_base_dispatch(struct ub_event_base*);
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/** exit that loop */
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int ub_event_base_loopexit(struct ub_event_base*);
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/** Create a new ub_event for the event base */
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struct ub_event* ub_event_new(struct ub_event_base*,
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int fd, short bits, void (*cb)(int, short, void*), void* arg);
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/** Create a new ub_event signal for the event base */
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struct ub_event* ub_signal_new(struct ub_event_base*, int fd,
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void (*cb)(int, short, void*), void* arg);
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/** Create a new ub_event associated with the wsaevent for the event base */
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struct ub_event* ub_winsock_register_wsaevent(struct ub_event_base*,
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void* wsaevent, void (*cb)(int, short, void*), void* arg);
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/** Add event bits for this event to fire on */
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void ub_event_add_bits(struct ub_event*, short bits);
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/** Configure the event so it will not longer fire on given bits */
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void ub_event_del_bits(struct ub_event*, short bits);
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/** Change or set the file descriptor on the event */
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void ub_event_set_fd(struct ub_event*, int fd);
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/** free the event */
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void ub_event_free(struct ub_event*);
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/** Activate the event. The given timeval is an timeout value. */
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int ub_event_add(struct ub_event*, struct timeval*);
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/** Deactivate the event */
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int ub_event_del(struct ub_event*);
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/** Reconfigure and activate a timeout event */
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int ub_timer_add(struct ub_event*, struct ub_event_base*,
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void (*cb)(int, short, void*), void* arg, struct timeval*);
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/** Deactivate the timeout event */
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int ub_timer_del(struct ub_event*);
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/** Activate a signal event */
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int ub_signal_add(struct ub_event*, struct timeval*);
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/** Deactivate a signal event */
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int ub_signal_del(struct ub_event*);
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/** Free a with a wsaevent associated event */
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void ub_winsock_unregister_wsaevent(struct ub_event* ev);
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/** Signal the eventloop when a TCP windows socket will block on next read
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* or write (given by the eventbits)
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*/
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void ub_winsock_tcp_wouldblock(struct ub_event*, int bits);
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/** Equip the comm_base with the current time */
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void ub_comm_base_now(struct comm_base* cb);
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#endif /* UB_EVENT_H */
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