timer.c revision ab023a65562e62b85a824509d829b6fad87e00b1
/*
* Copyright (C) 2004 Internet Systems Consortium, Inc. ("ISC")
* Copyright (C) 2000, 2001 Internet Software Consortium.
*
* Permission to use, copy, modify, and 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: timer.c,v 1.4 2005/04/27 04:56:52 sra Exp $ */
/*! \file */
#include <config.h>
#include <isc/result.h>
#include <isc/time.h>
#include <isc/timer.h>
#include <dns/types.h>
#include <dns/timer.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, isc_boolean_t 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);
}