xref: /freebsd/contrib/ntp/sntp/libevent/kqueue-internal.h (revision 416ba5c74546f32a993436a99516d35008e9f384)
1*2b15cb3dSCy Schubert /*
2*2b15cb3dSCy Schubert  * Copyright (c) 2012 Niels Provos and Nick Mathewson
3*2b15cb3dSCy Schubert  *
4*2b15cb3dSCy Schubert  * Redistribution and use in source and binary forms, with or without
5*2b15cb3dSCy Schubert  * modification, are permitted provided that the following conditions
6*2b15cb3dSCy Schubert  * are met:
7*2b15cb3dSCy Schubert  * 1. Redistributions of source code must retain the above copyright
8*2b15cb3dSCy Schubert  *    notice, this list of conditions and the following disclaimer.
9*2b15cb3dSCy Schubert  * 2. Redistributions in binary form must reproduce the above copyright
10*2b15cb3dSCy Schubert  *    notice, this list of conditions and the following disclaimer in the
11*2b15cb3dSCy Schubert  *    documentation and/or other materials provided with the distribution.
12*2b15cb3dSCy Schubert  * 3. The name of the author may not be used to endorse or promote products
13*2b15cb3dSCy Schubert  *    derived from this software without specific prior written permission.
14*2b15cb3dSCy Schubert  *
15*2b15cb3dSCy Schubert  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16*2b15cb3dSCy Schubert  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17*2b15cb3dSCy Schubert  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18*2b15cb3dSCy Schubert  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19*2b15cb3dSCy Schubert  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20*2b15cb3dSCy Schubert  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21*2b15cb3dSCy Schubert  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22*2b15cb3dSCy Schubert  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23*2b15cb3dSCy Schubert  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24*2b15cb3dSCy Schubert  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25*2b15cb3dSCy Schubert  */
26*2b15cb3dSCy Schubert #ifndef KQUEUE_INTERNAL_H_INCLUDED_
27*2b15cb3dSCy Schubert #define KQUEUE_INTERNAL_H_INCLUDED_
28*2b15cb3dSCy Schubert 
29*2b15cb3dSCy Schubert /** Notification function, used to tell an event base to wake up from another
30*2b15cb3dSCy Schubert  * thread.  Only works when event_kq_add_notify_event_() has previously been
31*2b15cb3dSCy Schubert  * called successfully on that base. */
32*2b15cb3dSCy Schubert int event_kq_notify_base_(struct event_base *base);
33*2b15cb3dSCy Schubert 
34*2b15cb3dSCy Schubert /** Prepare a kqueue-using event base to receive notifications via an internal
35*2b15cb3dSCy Schubert  * EVFILT_USER event.  Return 0 on sucess, -1 on failure.
36*2b15cb3dSCy Schubert  */
37*2b15cb3dSCy Schubert int event_kq_add_notify_event_(struct event_base *base);
38*2b15cb3dSCy Schubert 
39*2b15cb3dSCy Schubert #endif
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