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2f4f3bd4 | 1 | /* clock_gettime -- Get the current time from a POSIX clockid_t. Unix version. |
04277e02 | 2 | Copyright (C) 1999-2019 Free Software Foundation, Inc. |
13fa3676 UD |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
13fa3676 UD |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 13 | Lesser General Public License for more details. |
13fa3676 | 14 | |
41bdb6e2 | 15 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
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18 | |
19 | #include <errno.h> | |
8be918b7 | 20 | #include <time.h> |
13fa3676 | 21 | #include <sys/time.h> |
7b5af2d8 | 22 | #include <shlib-compat.h> |
2f4f3bd4 | 23 | |
13fa3676 UD |
24 | /* Get current value of CLOCK and store it in TP. */ |
25 | int | |
89fb6835 | 26 | __clock_gettime (clockid_t clock_id, struct timespec *tp) |
13fa3676 | 27 | { |
4a199526 | 28 | int retval = -1; |
13fa3676 UD |
29 | |
30 | switch (clock_id) | |
31 | { | |
32 | case CLOCK_REALTIME: | |
701666b7 UD |
33 | { |
34 | struct timeval tv; | |
fcafcd16 | 35 | retval = __gettimeofday (&tv, NULL); |
701666b7 UD |
36 | if (retval == 0) |
37 | TIMEVAL_TO_TIMESPEC (&tv, tp); | |
38 | } | |
13fa3676 UD |
39 | break; |
40 | ||
4165d44d | 41 | default: |
38cc11da | 42 | __set_errno (EINVAL); |
2f4f3bd4 | 43 | break; |
13fa3676 UD |
44 | } |
45 | ||
46 | return retval; | |
47 | } | |
89fb6835 | 48 | libc_hidden_def (__clock_gettime) |
7b5af2d8 ZW |
49 | |
50 | versioned_symbol (libc, __clock_gettime, clock_gettime, GLIBC_2_17); | |
51 | /* clock_gettime moved to libc in version 2.17; | |
52 | old binaries may expect the symbol version it had in librt. */ | |
53 | #if SHLIB_COMPAT (libc, GLIBC_2_2, GLIBC_2_17) | |
54 | strong_alias (__clock_gettime, __clock_gettime_2); | |
55 | compat_symbol (libc, __clock_gettime_2, clock_gettime, GLIBC_2_2); | |
56 | #endif |