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84060bad | 1 | /* pthread_getcpuclockid -- Get POSIX clockid_t for a pthread_t. Linux version |
688903eb | 2 | Copyright (C) 2000-2018 Free Software Foundation, Inc. |
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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 License as | |
7 | published by the Free Software Foundation; either version 2.1 of the | |
8 | 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 | |
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16 | License along with the GNU C Library; see the file COPYING.LIB. If |
17 | not, see <http://www.gnu.org/licenses/>. */ | |
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18 | |
19 | #include <errno.h> | |
20 | #include <pthreadP.h> | |
21 | #include <sys/time.h> | |
22 | #include <tls.h> | |
45bc95b5 | 23 | #include <kernel-posix-cpu-timers.h> |
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24 | |
25 | ||
84060bad | 26 | int |
bd2260a2 | 27 | pthread_getcpuclockid (pthread_t threadid, clockid_t *clockid) |
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28 | { |
29 | struct pthread *pd = (struct pthread *) threadid; | |
30 | ||
31 | /* Make sure the descriptor is valid. */ | |
32 | if (INVALID_TD_P (pd)) | |
33 | /* Not a valid thread handle. */ | |
34 | return ESRCH; | |
35 | ||
26889eac | 36 | /* The clockid_t value is a simple computation from the TID. */ |
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37 | |
38 | const clockid_t tidclock = MAKE_THREAD_CPUCLOCK (pd->tid, CPUCLOCK_SCHED); | |
39 | ||
26889eac | 40 | *clockid = tidclock; |
84060bad | 41 | return 0; |
84060bad | 42 | } |