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/* clock_gettime -- Get the current time from a POSIX clockid_t. Unix version.
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Copyright (C) 1999-2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <time.h>
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#include <sys/time.h>
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#include <shlib-compat.h>
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/* Get current value of CLOCK and store it in TP. */
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int
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__clock_gettime (clockid_t clock_id, struct timespec *tp)
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{
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int retval = -1;
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switch (clock_id)
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{
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case CLOCK_REALTIME:
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{
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struct timeval tv;
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retval = __gettimeofday (&tv, NULL);
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if (retval == 0)
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TIMEVAL_TO_TIMESPEC (&tv, tp);
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}
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break;
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default:
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__set_errno (EINVAL);
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break;
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}
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return retval;
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}
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libc_hidden_def (__clock_gettime)
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versioned_symbol (libc, __clock_gettime, clock_gettime, GLIBC_2_17);
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/* clock_gettime moved to libc in version 2.17;
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old binaries may expect the symbol version it had in librt. */
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#if SHLIB_COMPAT (libc, GLIBC_2_2, GLIBC_2_17)
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strong_alias (__clock_gettime, __clock_gettime_2);
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compat_symbol (libc, __clock_gettime_2, clock_gettime, GLIBC_2_2);
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#endif
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