mirror of
https://gitlab.isc.org/isc-projects/bind9
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71 lines
1.8 KiB
C
71 lines
1.8 KiB
C
/*
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* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* See the COPYRIGHT file distributed with this work for additional
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* information regarding copyright ownership.
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*/
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/*! \file */
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#include <errno.h>
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#include <isc/condition.h>
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#include <isc/strerr.h>
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#include <isc/string.h>
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#include <isc/time.h>
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#include <isc/util.h>
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isc_result_t
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isc_condition_waituntil(isc_condition_t *c, isc_mutex_t *m, isc_time_t *t) {
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int presult;
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isc_result_t result;
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struct timespec ts;
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char strbuf[ISC_STRERRORSIZE];
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REQUIRE(c != NULL && m != NULL && t != NULL);
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/*
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* POSIX defines a timespec's tv_sec as time_t.
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*/
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result = isc_time_secondsastimet(t, &ts.tv_sec);
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/*
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* If we have a range error ts.tv_sec is most probably a signed
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* 32 bit value. Set ts.tv_sec to INT_MAX. This is a kludge.
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*/
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if (result == ISC_R_RANGE) {
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ts.tv_sec = INT_MAX;
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} else if (result != ISC_R_SUCCESS) {
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return (result);
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}
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/*!
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* POSIX defines a timespec's tv_nsec as long. isc_time_nanoseconds
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* ensures its return value is < 1 billion, which will fit in a long.
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*/
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ts.tv_nsec = (long)isc_time_nanoseconds(t);
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do {
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#if ISC_MUTEX_PROFILE
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presult = pthread_cond_timedwait(c, &m->mutex, &ts);
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#else /* if ISC_MUTEX_PROFILE */
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presult = pthread_cond_timedwait(c, m, &ts);
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#endif /* if ISC_MUTEX_PROFILE */
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if (presult == 0) {
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return (ISC_R_SUCCESS);
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}
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if (presult == ETIMEDOUT) {
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return (ISC_R_TIMEDOUT);
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}
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} while (presult == EINTR);
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strerror_r(presult, strbuf, sizeof(strbuf));
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UNEXPECTED_ERROR(__FILE__, __LINE__,
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"pthread_cond_timedwait() returned %s", strbuf);
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return (ISC_R_UNEXPECTED);
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}
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