2 * Copyright (C) 2004, 2005, 2007 Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (C) 1998-2001 Internet Software Consortium.
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
10 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
11 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
12 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
13 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
14 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
15 * PERFORMANCE OF THIS SOFTWARE.
18 /* $Id: event.c,v 1.21 2007/06/19 23:47:17 tbox Exp $ */
22 * \author Principal Author: Bob Halley
27 #include <isc/event.h>
36 destroy(isc_event_t *event) {
37 isc_mem_put(event->ev_destroy_arg, event, event->ev_size);
41 isc_event_allocate(isc_mem_t *mctx, void *sender, isc_eventtype_t type,
42 isc_taskaction_t action, const void *arg, size_t size)
47 REQUIRE(size >= sizeof(struct isc_event));
48 REQUIRE(action != NULL);
50 event = isc_mem_get(mctx, size);
55 * Removing the const attribute from "arg" is the best of two
56 * evils here. If the event->ev_arg member is made const, then
57 * it affects a great many users of the task/event subsystem
58 * which are not passing in an "arg" which starts its life as
59 * const. Changing isc_event_allocate() and isc_task_onshutdown()
60 * to not have "arg" prototyped as const (which is quite legitimate,
61 * because neither of those functions modify arg) can cause
62 * compiler whining anytime someone does want to use a const
63 * arg that they themselves never modify, such as with
64 * gcc -Wwrite-strings and using a string "arg".
66 DE_CONST(arg, deconst_arg);
68 ISC_EVENT_INIT(event, size, 0, NULL, type, action, deconst_arg,
69 sender, destroy, mctx);
75 isc_event_free(isc_event_t **eventp) {
78 REQUIRE(eventp != NULL);
80 REQUIRE(event != NULL);
82 if (event->ev_destroy != NULL)
83 (event->ev_destroy)(event);