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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 <errno.h>
#include <isc/condition.h>
#include <isc/strerr.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;
char strbuf[ISC_STRERRORSIZE];
REQUIRE(c != NULL && m != NULL && t != NULL);
/*
* POSIX defines a timespec's tv_sec as time_t.
*/
result = isc_time_secondsastimet(t, &ts.tv_sec);
/*
* If we have a range error ts.tv_sec is most probably a signed
* 32 bit value. Set ts.tv_sec to INT_MAX. This is a kludge.
*/
if (result == ISC_R_RANGE) {
ts.tv_sec = INT_MAX;
} else 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 {
#if ISC_MUTEX_PROFILE
presult = pthread_cond_timedwait(c, &m->mutex, &ts);
#else /* if ISC_MUTEX_PROFILE */
presult = pthread_cond_timedwait(c, m, &ts);
#endif /* if ISC_MUTEX_PROFILE */
if (presult == 0) {
return (ISC_R_SUCCESS);
}
if (presult == ETIMEDOUT) {
return (ISC_R_TIMEDOUT);
}
} while (presult == EINTR);
strerror_r(presult, strbuf, sizeof(strbuf));
UNEXPECTED_ERROR(__FILE__, __LINE__,
"pthread_cond_timedwait() returned %s", strbuf);
return (ISC_R_UNEXPECTED);
}
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