74 lines
1.4 KiB
C
74 lines
1.4 KiB
C
/*-
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* See the file LICENSE for redistribution information.
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*
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* Copyright (c) 2001,2008 Oracle. All rights reserved.
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*
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* $Id: os_clock.c 63573 2008-05-23 21:43:21Z trent.nelson $
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*/
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#include "db_config.h"
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#include "db_int.h"
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/*
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* __os_gettime --
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* Return the current time-of-day clock in seconds and nanoseconds.
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*
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* PUBLIC: void __os_gettime __P((ENV *, db_timespec *, int));
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*/
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void
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__os_gettime(env, tp, monotonic)
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ENV *env;
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db_timespec *tp;
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int monotonic;
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{
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const char *sc;
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int ret;
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#if defined(HAVE_CLOCK_GETTIME)
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#if defined(HAVE_CLOCK_MONOTONIC)
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if (monotonic)
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RETRY_CHK((clock_gettime(
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CLOCK_MONOTONIC, (struct timespec *)tp)), ret);
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else
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#endif
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RETRY_CHK((clock_gettime(
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CLOCK_REALTIME, (struct timespec *)tp)), ret);
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RETRY_CHK((clock_gettime(CLOCK_REALTIME, (struct timespec *)tp)), ret);
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if (ret != 0) {
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sc = "clock_gettime";
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goto err;
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}
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#elif defined(HAVE_GETTIMEOFDAY)
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struct timeval v;
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RETRY_CHK((gettimeofday(&v, NULL)), ret);
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if (ret != 0) {
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sc = "gettimeofday";
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goto err;
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}
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tp->tv_sec = v.tv_sec;
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tp->tv_nsec = v.tv_usec * NS_PER_US;
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#elif defined(HAVE_TIME)
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time_t now;
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RETRY_CHK((time(&now) == (time_t)-1 ? 1 : 0), ret);
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if (ret != 0) {
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sc = "time";
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goto err;
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}
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tp->tv_sec = now;
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tp->tv_nsec = 0;
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#else
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NO AVAILABLE CLOCK IMPLEMENTATION
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#endif
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COMPQUIET(monotonic, 0);
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return;
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err: __db_syserr(env, ret, "%s", sc);
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(void)__env_panic(env, __os_posix_err(ret));
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}
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