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/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* SPDX-License-Identifier: MPL-2.0
*
* 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 https://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
/*! \file */
#include <stdbool.h>
#include <isc/result.h>
#include <isc/time.h>
#include <isc/timer.h>
#include <dns/timer.h>
#include <dns/types.h>
#define CHECK(op) \
do { \
result = (op); \
if (result != ISC_R_SUCCESS) \
goto failure; \
} while (0)
isc_result_t
dns_timer_setidle(isc_timer_t *timer, unsigned int maxtime,
unsigned int idletime, bool purge) {
isc_result_t result;
isc_interval_t maxinterval, idleinterval;
isc_time_t expires;
/* Compute the time of expiry. */
isc_interval_set(&maxinterval, maxtime, 0);
CHECK(isc_time_nowplusinterval(&expires, &maxinterval));
/*
* Compute the idle interval, and add a spare nanosecond to
* work around the silly limitation of the ISC timer interface
* that you cannot specify an idle interval of zero.
*/
isc_interval_set(&idleinterval, idletime, 1);
CHECK(isc_timer_reset(timer, isc_timertype_once, &expires,
&idleinterval, purge));
failure:
return (result);
}
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