1 /*
2 * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
9 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
10 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
11 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
12 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
13 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
14 * PERFORMANCE OF THIS SOFTWARE.
15 */
16
17 /* $Id: event.c,v 1.3 2020/02/25 05:00:43 jsg Exp $ */
18
19 /*!
20 * \file
21 * \author Principal Author: Bob Halley
22 */
23
24 #include <stdlib.h>
25 #include <isc/event.h>
26
27 #include <isc/util.h>
28
29 /***
30 *** Events.
31 ***/
32
33 static void
destroy(isc_event_t * event)34 destroy(isc_event_t *event) {
35 free(event);
36 }
37
38 isc_event_t *
isc_event_allocate(void * sender,isc_eventtype_t type,isc_taskaction_t action,void * arg,size_t size)39 isc_event_allocate(void *sender, isc_eventtype_t type,
40 isc_taskaction_t action, void *arg, size_t size)
41 {
42 isc_event_t *event;
43
44 REQUIRE(size >= sizeof(struct isc_event));
45 REQUIRE(action != NULL);
46
47 event = malloc(size);
48 if (event == NULL)
49 return (NULL);
50
51 ISC_EVENT_INIT(event, size, 0, NULL, type, action, arg,
52 sender, destroy);
53
54 return (event);
55 }
56
57 void
isc_event_free(isc_event_t ** eventp)58 isc_event_free(isc_event_t **eventp) {
59 isc_event_t *event;
60
61 REQUIRE(eventp != NULL);
62 event = *eventp;
63 REQUIRE(event != NULL);
64
65 REQUIRE(!ISC_LINK_LINKED(event, ev_link));
66 REQUIRE(!ISC_LINK_LINKED(event, ev_ratelink));
67
68 if (event->ev_destroy != NULL)
69 (event->ev_destroy)(event);
70
71 *eventp = NULL;
72 }
73