1 /* $NetBSD: ondestroy.c,v 1.4 2014/12/10 04:37:59 christos Exp $ */
2
3 /*
4 * Copyright (C) 2004, 2005, 2007 Internet Systems Consortium, Inc. ("ISC")
5 * Copyright (C) 2000, 2001 Internet Software Consortium.
6 *
7 * Permission to use, copy, modify, and/or distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
12 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
13 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
14 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
15 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
16 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
17 * PERFORMANCE OF THIS SOFTWARE.
18 */
19
20 /* Id: ondestroy.c,v 1.16 2007/06/19 23:47:17 tbox Exp */
21
22 /*! \file */
23
24 #include <config.h>
25
26 #include <stddef.h>
27
28 #include <isc/event.h>
29 #include <isc/magic.h>
30 #include <isc/ondestroy.h>
31 #include <isc/task.h>
32 #include <isc/util.h>
33
34 #define ONDESTROY_MAGIC ISC_MAGIC('D', 'e', 'S', 't')
35 #define VALID_ONDESTROY(s) ISC_MAGIC_VALID(s, ONDESTROY_MAGIC)
36
37 void
isc_ondestroy_init(isc_ondestroy_t * ondest)38 isc_ondestroy_init(isc_ondestroy_t *ondest) {
39 ondest->magic = ONDESTROY_MAGIC;
40 ISC_LIST_INIT(ondest->events);
41 }
42
43 isc_result_t
isc_ondestroy_register(isc_ondestroy_t * ondest,isc_task_t * task,isc_event_t ** eventp)44 isc_ondestroy_register(isc_ondestroy_t *ondest, isc_task_t *task,
45 isc_event_t **eventp)
46 {
47 isc_event_t *theevent;
48 isc_task_t *thetask = NULL;
49
50 REQUIRE(VALID_ONDESTROY(ondest));
51 REQUIRE(task != NULL);
52 REQUIRE(eventp != NULL);
53
54 theevent = *eventp;
55
56 REQUIRE(theevent != NULL);
57
58 isc_task_attach(task, &thetask);
59
60 theevent->ev_sender = thetask;
61
62 ISC_LIST_APPEND(ondest->events, theevent, ev_link);
63
64 return (ISC_R_SUCCESS);
65 }
66
67 void
isc_ondestroy_notify(isc_ondestroy_t * ondest,void * sender)68 isc_ondestroy_notify(isc_ondestroy_t *ondest, void *sender) {
69 isc_event_t *eventp;
70 isc_task_t *task;
71
72 REQUIRE(VALID_ONDESTROY(ondest));
73
74 eventp = ISC_LIST_HEAD(ondest->events);
75 while (eventp != NULL) {
76 ISC_LIST_UNLINK(ondest->events, eventp, ev_link);
77
78 task = eventp->ev_sender;
79 eventp->ev_sender = sender;
80
81 isc_task_sendanddetach(&task, &eventp);
82
83 eventp = ISC_LIST_HEAD(ondest->events);
84 }
85 }
86
87
88