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/*
* Copyright (C) 1998-2000 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 INTERNET SOFTWARE CONSORTIUM DISCLAIMS
* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
* CONSORTIUM 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: condition.c,v 1.22 2000/06/22 21:58:17 tale Exp $ */
#include <config.h>
#include <errno.h>
#include <isc/condition.h>
#include <isc/string.h>
#include <isc/time.h>
#include <isc/util.h>
isc_result_t
isc_condition_waituntil(isc_condition_t *c, isc_mutex_t *m, isc_time_t *t) {
int presult;
isc_result_t result;
struct timespec ts;
REQUIRE(c != NULL && m != NULL && t != NULL);
/*
* POSIX defines a timepsec's tv_sec as time_t.
*/
result = isc_time_secondsastimet(t, &ts.tv_sec);
if (result != ISC_R_SUCCESS)
return (result);
/*
* POSIX defines a timespec's tv_nsec as long. isc_time_nanoseconds
* ensures its return value is < 1 billion, which will fit in a long.
*/
ts.tv_nsec = (long)isc_time_nanoseconds(t);
do {
presult = pthread_cond_timedwait(c, m, &ts);
if (presult == 0)
return (ISC_R_SUCCESS);
if (presult == ETIMEDOUT)
return (ISC_R_TIMEDOUT);
} while (presult == EINTR);
UNEXPECTED_ERROR(__FILE__, __LINE__,
"pthread_cond_timedwait() returned %s",
strerror(presult));
return (ISC_R_UNEXPECTED);
}
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