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60 lines
1.5 KiB
C
60 lines
1.5 KiB
C
/* gettime -- get the system clock
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Copyright (C) 2002, 2004, 2005 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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/* Written by Paul Eggert. */
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include "timespec.h"
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/* Get the system time into *TS. */
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void
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gettime (struct timespec *ts)
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{
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#if HAVE_NANOTIME
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nanotime (ts);
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#else
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# if defined CLOCK_REALTIME && HAVE_CLOCK_GETTIME
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if (clock_gettime (CLOCK_REALTIME, ts) == 0)
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return;
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# endif
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# if HAVE_GETTIMEOFDAY
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{
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struct timeval tv;
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gettimeofday (&tv, NULL);
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ts->tv_sec = tv.tv_sec;
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ts->tv_nsec = tv.tv_usec * 1000;
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}
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# else
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# ifndef OK_TO_USE_1S_CLOCK
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# error "Only 1-second nominal clock resolution found. Is that intended?" \
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"If so, compile with the -DOK_TO_USE_1S_CLOCK option."
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# endif
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ts->tv_sec = time (NULL);
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ts->tv_nsec = 0;
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# endif
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#endif
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}
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