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1 | /* clock_gettime -- Get current time from a POSIX clockid_t. Linux version. | |
2 | Copyright (C) 2003-2019 Free Software Foundation, Inc. | |
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 | |
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. | |
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 | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; if not, see | |
17 | <http://www.gnu.org/licenses/>. */ | |
18 | ||
19 | #include <sysdep.h> | |
20 | #include <errno.h> | |
21 | #include <time.h> | |
22 | #include "kernel-posix-cpu-timers.h" | |
23 | ||
24 | #ifdef HAVE_CLOCK_GETTIME_VSYSCALL | |
25 | # define HAVE_VSYSCALL | |
26 | #endif | |
27 | #include <sysdep-vdso.h> | |
28 | ||
29 | /* The REALTIME and MONOTONIC clock are definitely supported in the | |
30 | kernel. */ | |
31 | #define SYSDEP_GETTIME \ | |
32 | SYSDEP_GETTIME_CPUTIME; \ | |
33 | case CLOCK_REALTIME: \ | |
34 | case CLOCK_MONOTONIC: \ | |
35 | retval = INLINE_VSYSCALL (clock_gettime, 2, clock_id, tp); \ | |
36 | break | |
37 | ||
38 | /* We handled the REALTIME clock here. */ | |
39 | #define HANDLED_REALTIME 1 | |
40 | #define HANDLED_CPUTIME 1 | |
41 | ||
42 | #define SYSDEP_GETTIME_CPU(clock_id, tp) \ | |
43 | retval = INLINE_VSYSCALL (clock_gettime, 2, clock_id, tp); \ | |
44 | break | |
45 | #define SYSDEP_GETTIME_CPUTIME /* Default catches them too. */ | |
46 | ||
47 | #include <sysdeps/unix/clock_gettime.c> |