projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| a5f2bd86 | 1 | /* Change priority ceiling setting in pthread_mutexattr_t. |
| 6d7e8eda | 2 | Copyright (C) 2006-2023 Free Software Foundation, Inc. |
| a5f2bd86 | 3 | This file is part of the GNU C Library. |
| a5f2bd86 RM |
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 | |
| 59ba27a6 | 16 | License along with the GNU C Library; if not, see |
| 5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
| a5f2bd86 RM |
18 | |
| 19 | #include <errno.h> | |
| 20 | #include <pthreadP.h> | |
| cdcb42d7 | 21 | #include <atomic.h> |
| c6677228 | 22 | #include <shlib-compat.h> |
| a5f2bd86 RM |
23 | |
| 24 | int | |
| c6677228 | 25 | __pthread_mutexattr_setprioceiling (pthread_mutexattr_t *attr, int prioceiling) |
| a5f2bd86 | 26 | { |
| cdcb42d7 TR |
27 | /* See __init_sched_fifo_prio. */ |
| 28 | if (atomic_load_relaxed (&__sched_fifo_min_prio) == -1 | |
| 29 | || atomic_load_relaxed (&__sched_fifo_max_prio) == -1) | |
| f17efcb4 UD |
30 | __init_sched_fifo_prio (); |
| 31 | ||
| cdcb42d7 TR |
32 | if (__glibc_unlikely (prioceiling |
| 33 | < atomic_load_relaxed (&__sched_fifo_min_prio)) | |
| 34 | || __glibc_unlikely (prioceiling | |
| 35 | > atomic_load_relaxed (&__sched_fifo_max_prio)) | |
| 36 | || __glibc_unlikely ((prioceiling | |
| f17efcb4 UD |
37 | & (PTHREAD_MUTEXATTR_PRIO_CEILING_MASK |
| 38 | >> PTHREAD_MUTEXATTR_PRIO_CEILING_SHIFT)) | |
| cdcb42d7 | 39 | != prioceiling)) |
| a5f2bd86 RM |
40 | return EINVAL; |
| 41 | ||
| 42 | struct pthread_mutexattr *iattr = (struct pthread_mutexattr *) attr; | |
| 43 | ||
| 44 | iattr->mutexkind = ((iattr->mutexkind & ~PTHREAD_MUTEXATTR_PRIO_CEILING_MASK) | |
| 45 | | (prioceiling << PTHREAD_MUTEXATTR_PRIO_CEILING_SHIFT)); | |
| 46 | ||
| 47 | return 0; | |
| 48 | } | |
| c6677228 FW |
49 | versioned_symbol (libc, __pthread_mutexattr_setprioceiling, |
| 50 | pthread_mutexattr_setprioceiling, GLIBC_2_34); | |
| 51 | ||
| 52 | #if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_4, GLIBC_2_34) | |
| 53 | compat_symbol (libpthread, __pthread_mutexattr_setprioceiling, | |
| 54 | pthread_mutexattr_setprioceiling, GLIBC_2_4); | |
| 55 | #endif |