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The TIME_MONOTONIC maps to POSIX's CLOCK_MONOTONIC, TIME_ACTIVE to CLOCK_PROCESS_CPUTIME_ID, and TIME_THREAD_ACTIVE to CLOCK_THREAD_CPUTIME_ID. No Linux specific timer are added as extension. Co-authored-by: Yonggang Luo <luoyonggang@gmail.com> Reviewed-by: Paul Eggert <eggert@cs.ucla.edu>
45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
/* Get resolution of a time base.
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Copyright (C) 2021-2025 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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<https://www.gnu.org/licenses/>. */
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#include <time.h>
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/* Set TS to resolution of time base BASE. */
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int
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__timespec_getres64 (struct __timespec64 *ts, int base)
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{
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return __clock_getres64 (clock_from_timebase (base), ts) == 0 ? base : 0;
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}
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#if __TIMESIZE != 64
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libc_hidden_def (__timespec_getres64)
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int
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__timespec_getres (struct timespec *ts, int base)
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{
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int ret;
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struct __timespec64 tp64;
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ret = __timespec_getres64 (&tp64, base);
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if (ret != 0 && ts != NULL)
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*ts = valid_timespec64_to_timespec (tp64);
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return ret;
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}
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#endif
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strong_alias (__timespec_getres, timespec_getres);
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