1/* Copyright (C) 2003-2023 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18#include <assert.h>
19#include <errno.h>
20#include <futex-internal.h>
21#include <time.h>
22#include <sysdep.h>
23#include "pthreadP.h"
24
25
26int
27__pthread_condattr_setclock (pthread_condattr_t *attr, clockid_t clock_id)
28{
29 /* Only a few clocks are allowed. */
30 if (clock_id != CLOCK_MONOTONIC && clock_id != CLOCK_REALTIME)
31 /* If more clocks are allowed some day the storing of the clock ID
32 in the pthread_cond_t structure needs to be adjusted. */
33 return EINVAL;
34
35 /* Make sure the value fits in the bits we reserved. */
36 assert (clock_id < (1 << COND_CLOCK_BITS));
37
38 int *valuep = &((struct pthread_condattr *) attr)->value;
39
40 *valuep = ((*valuep & ~(((1 << COND_CLOCK_BITS) - 1) << 1))
41 | (clock_id << 1));
42
43 return 0;
44}
45versioned_symbol (libc, __pthread_condattr_setclock,
46 pthread_condattr_setclock, GLIBC_2_34);
47
48#if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_3_3, GLIBC_2_34)
49compat_symbol (libpthread, __pthread_condattr_setclock,
50 pthread_condattr_setclock, GLIBC_2_3_3);
51#endif
52