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/*
* Copyright (C) 2004, 2005, 2007 Internet Systems Consortium, Inc. ("ISC")
* Copyright (C) 2000, 2001 Internet Software Consortium.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: ondestroy.c,v 1.16 2007/06/19 23:47:17 tbox Exp $ */
/*! \file */
#include <config.h>
#include <stddef.h>
#include <isc/event.h>
#include <isc/magic.h>
#include <isc/ondestroy.h>
#include <isc/task.h>
#include <isc/util.h>
#define ONDESTROY_MAGIC ISC_MAGIC('D', 'e', 'S', 't')
#define VALID_ONDESTROY(s) ISC_MAGIC_VALID(s, ONDESTROY_MAGIC)
void
isc_ondestroy_init(isc_ondestroy_t *ondest) {
ondest->magic = ONDESTROY_MAGIC;
ISC_LIST_INIT(ondest->events);
}
isc_result_t
isc_ondestroy_register(isc_ondestroy_t *ondest, isc_task_t *task,
isc_event_t **eventp)
{
isc_event_t *theevent;
isc_task_t *thetask = NULL;
REQUIRE(VALID_ONDESTROY(ondest));
REQUIRE(task != NULL);
REQUIRE(eventp != NULL);
theevent = *eventp;
REQUIRE(theevent != NULL);
isc_task_attach(task, &thetask);
theevent->ev_sender = thetask;
ISC_LIST_APPEND(ondest->events, theevent, ev_link);
return (ISC_R_SUCCESS);
}
void
isc_ondestroy_notify(isc_ondestroy_t *ondest, void *sender) {
isc_event_t *eventp;
isc_task_t *task;
REQUIRE(VALID_ONDESTROY(ondest));
eventp = ISC_LIST_HEAD(ondest->events);
while (eventp != NULL) {
ISC_LIST_UNLINK(ondest->events, eventp, ev_link);
task = eventp->ev_sender;
eventp->ev_sender = sender;
isc_task_sendanddetach(&task, &eventp);
eventp = ISC_LIST_HEAD(ondest->events);
}
}
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