mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-25 06:20:06 +00:00
56 lines
2.1 KiB
C
56 lines
2.1 KiB
C
/* Change priority ceiling setting in pthread_mutexattr_t.
|
|
Copyright (C) 2006-2024 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <errno.h>
|
|
#include <pthreadP.h>
|
|
#include <atomic.h>
|
|
#include <shlib-compat.h>
|
|
|
|
int
|
|
__pthread_mutexattr_setprioceiling (pthread_mutexattr_t *attr, int prioceiling)
|
|
{
|
|
/* See __init_sched_fifo_prio. */
|
|
if (atomic_load_relaxed (&__sched_fifo_min_prio) == -1
|
|
|| atomic_load_relaxed (&__sched_fifo_max_prio) == -1)
|
|
__init_sched_fifo_prio ();
|
|
|
|
if (__glibc_unlikely (prioceiling
|
|
< atomic_load_relaxed (&__sched_fifo_min_prio))
|
|
|| __glibc_unlikely (prioceiling
|
|
> atomic_load_relaxed (&__sched_fifo_max_prio))
|
|
|| __glibc_unlikely ((prioceiling
|
|
& (PTHREAD_MUTEXATTR_PRIO_CEILING_MASK
|
|
>> PTHREAD_MUTEXATTR_PRIO_CEILING_SHIFT))
|
|
!= prioceiling))
|
|
return EINVAL;
|
|
|
|
struct pthread_mutexattr *iattr = (struct pthread_mutexattr *) attr;
|
|
|
|
iattr->mutexkind = ((iattr->mutexkind & ~PTHREAD_MUTEXATTR_PRIO_CEILING_MASK)
|
|
| (prioceiling << PTHREAD_MUTEXATTR_PRIO_CEILING_SHIFT));
|
|
|
|
return 0;
|
|
}
|
|
versioned_symbol (libc, __pthread_mutexattr_setprioceiling,
|
|
pthread_mutexattr_setprioceiling, GLIBC_2_34);
|
|
|
|
#if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_4, GLIBC_2_34)
|
|
compat_symbol (libpthread, __pthread_mutexattr_setprioceiling,
|
|
pthread_mutexattr_setprioceiling, GLIBC_2_4);
|
|
#endif
|