/* $NetBSD: condition.c,v 1.2.4.2 2024/02/29 12:34:59 martin Exp $ */ /* * 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 #include #include #include #include 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 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 { 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_SYSERROR(presult, "pthread_cond_timedwait()"); return (ISC_R_UNEXPECTED); }