2 * Copyright (c) 2000-2004 Niels Provos <provos@citi.umich.edu>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 #include <sys/types.h>
30 #include <sys/socket.h>
38 * Libevent glue for ASR.
42 struct asr_query *async;
43 void (*cb)(struct asr_result *, void *);
48 event_asr_dispatch(int fd __attribute__((__unused__)),
49 short ev __attribute__((__unused__)), void *arg)
51 struct event_asr *eva = arg;
57 if (asr_run(eva->async, &ar)) {
58 eva->cb(&ar, eva->arg);
61 event_set(&eva->ev, ar.ar_fd,
62 ar.ar_cond == ASR_WANT_READ ? EV_READ : EV_WRITE,
63 event_asr_dispatch, eva);
64 tv.tv_sec = ar.ar_timeout / 1000;
65 tv.tv_usec = (ar.ar_timeout % 1000) * 1000;
66 event_add(&eva->ev, &tv);
71 event_asr_run(struct asr_query *async, void (*cb)(struct asr_result *, void *),
74 struct event_asr *eva;
77 eva = calloc(1, sizeof *eva);
85 evtimer_set(&eva->ev, event_asr_dispatch, eva);
86 evtimer_add(&eva->ev, &tv);
91 event_asr_abort(struct event_asr *eva)
93 asr_abort(eva->async);