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https://gitlab.isc.org/isc-projects/bind9
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52 lines
1.3 KiB
C
52 lines
1.3 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 <stdbool.h>
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#include <stddef.h> /* NULL */
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#include <stdlib.h> /* NULL */
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#include <syslog.h>
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#include <time.h>
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#include <isc/stdtime.h>
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#include <isc/strerr.h>
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#include <isc/util.h>
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#define NS_PER_S 1000000000 /*%< Nanoseconds per second. */
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#if defined(CLOCK_REALTIME_COARSE)
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#define CLOCKSOURCE CLOCK_REALTIME_COARSE
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#elif defined(CLOCK_REALTIME_FAST)
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#define CLOCKSOURCE CLOCK_REALTIME_FAST
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#else /* if defined(CLOCK_REALTIME_COARSE) */
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#define CLOCKSOURCE CLOCK_REALTIME
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#endif /* if defined(CLOCK_REALTIME_COARSE) */
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void
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isc_stdtime_get(isc_stdtime_t *t) {
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REQUIRE(t != NULL);
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struct timespec ts;
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if (clock_gettime(CLOCKSOURCE, &ts) == -1) {
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char strbuf[ISC_STRERRORSIZE];
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strerror_r(errno, strbuf, sizeof(strbuf));
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isc_error_fatal(__FILE__, __LINE__, "clock_gettime failed: %s",
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strbuf);
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}
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REQUIRE(ts.tv_sec > 0 && ts.tv_nsec >= 0 && ts.tv_nsec < NS_PER_S);
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*t = (isc_stdtime_t)ts.tv_sec;
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}
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