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/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
/* $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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