| 1 | /* Get resolution of a time base. |
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| 2 | Copyright (C) 2021-2024 Free Software Foundation, Inc. |
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| 3 | This file is part of the GNU C Library. |
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| 4 | |
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| 5 | The GNU C Library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Lesser General Public |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2.1 of the License. |
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| 9 | |
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| 10 | The GNU C Library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Lesser General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU Lesser General Public |
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| 16 | License along with the GNU C Library; if not, see |
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| 17 | <https://www.gnu.org/licenses/>. */ |
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| 18 | |
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| 19 | #include <time.h> |
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| 20 | |
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| 21 | /* Set TS to resolution of time base BASE. */ |
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| 22 | int |
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| 23 | __timespec_getres64 (struct __timespec64 *ts, int base) |
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| 24 | { |
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| 25 | if (base == TIME_UTC) |
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| 26 | { |
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| 27 | __clock_getres64 (CLOCK_REALTIME, ts); |
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| 28 | return base; |
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| 29 | } |
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| 30 | return 0; |
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| 31 | } |
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| 32 | |
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| 33 | #if __TIMESIZE != 64 |
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| 34 | libc_hidden_def (__timespec_getres64) |
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| 35 | |
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| 36 | int |
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| 37 | __timespec_getres (struct timespec *ts, int base) |
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| 38 | { |
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| 39 | int ret; |
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| 40 | struct __timespec64 tp64; |
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| 41 | |
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| 42 | ret = __timespec_getres64 (&tp64, base); |
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| 43 | |
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| 44 | if (ret == TIME_UTC && ts != NULL) |
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| 45 | *ts = valid_timespec64_to_timespec (tp64); |
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| 46 | |
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| 47 | return ret; |
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| 48 | } |
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| 49 | #endif |
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| 50 | strong_alias (__timespec_getres, timespec_getres); |
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| 51 | |
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