From a334319f6530564d22e775935d9c91663623a1b4 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Wed, 22 Dec 2004 20:10:10 +0000 Subject: (CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4. --- nptl/pthread_mutex_setprioceiling.c | 116 ------------------------------------ 1 file changed, 116 deletions(-) delete mode 100644 nptl/pthread_mutex_setprioceiling.c (limited to 'nptl/pthread_mutex_setprioceiling.c') diff --git a/nptl/pthread_mutex_setprioceiling.c b/nptl/pthread_mutex_setprioceiling.c deleted file mode 100644 index cd13d1c14c..0000000000 --- a/nptl/pthread_mutex_setprioceiling.c +++ /dev/null @@ -1,116 +0,0 @@ -/* Set current priority ceiling of pthread_mutex_t. - Copyright (C) 2006 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Jakub Jelinek , 2006. - - 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, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#include -#include -#include - - -int -pthread_mutex_setprioceiling (mutex, prioceiling, old_ceiling) - pthread_mutex_t *mutex; - int prioceiling; - int *old_ceiling; -{ - /* The low bits of __kind aren't ever changed after pthread_mutex_init, - so we don't need a lock yet. */ - if ((mutex->__data.__kind & PTHREAD_MUTEX_PRIO_PROTECT_NP) == 0) - return EINVAL; - - if (__sched_fifo_min_prio == -1) - __init_sched_fifo_prio (); - - if (__builtin_expect (prioceiling < __sched_fifo_min_prio, 0) - || __builtin_expect (prioceiling > __sched_fifo_max_prio, 0) - || __builtin_expect ((prioceiling - & (PTHREAD_MUTEXATTR_PRIO_CEILING_MASK - >> PTHREAD_MUTEXATTR_PRIO_CEILING_SHIFT)) - != prioceiling, 0)) - return EINVAL; - - /* Check whether we already hold the mutex. */ - bool locked = false; - if (mutex->__data.__owner == THREAD_GETMEM (THREAD_SELF, tid)) - { - if (mutex->__data.__kind == PTHREAD_MUTEX_PP_ERRORCHECK_NP) - return EDEADLK; - - if (mutex->__data.__kind == PTHREAD_MUTEX_PP_RECURSIVE_NP) - locked = true; - } - - int oldval = mutex->__data.__lock; - if (! locked) - do - { - /* Need to lock the mutex, but without obeying the priority - protect protocol. */ - int ceilval = (oldval & PTHREAD_MUTEX_PRIO_CEILING_MASK); - - oldval = atomic_compare_and_exchange_val_acq (&mutex->__data.__lock, - ceilval | 1, ceilval); - if (oldval == ceilval) - break; - - do - { - oldval - = atomic_compare_and_exchange_val_acq (&mutex->__data.__lock, - ceilval | 2, - ceilval | 1); - - if ((oldval & PTHREAD_MUTEX_PRIO_CEILING_MASK) != ceilval) - break; - - if (oldval != ceilval) - lll_futex_wait (&mutex->__data.__lock, ceilval | 2); - } - while (atomic_compare_and_exchange_val_acq (&mutex->__data.__lock, - ceilval | 2, ceilval) - != ceilval); - - if ((oldval & PTHREAD_MUTEX_PRIO_CEILING_MASK) != ceilval) - continue; - } - while (0); - - int oldprio = (oldval & PTHREAD_MUTEX_PRIO_CEILING_MASK) - >> PTHREAD_MUTEX_PRIO_CEILING_SHIFT; - if (locked) - { - int ret = __pthread_tpp_change_priority (oldprio, prioceiling); - if (ret) - return ret; - } - - if (old_ceiling != NULL) - *old_ceiling = oldprio; - - int newlock = 0; - if (locked) - newlock = (mutex->__data.__lock & ~PTHREAD_MUTEX_PRIO_CEILING_MASK); - mutex->__data.__lock = newlock - | (prioceiling << PTHREAD_MUTEX_PRIO_CEILING_SHIFT); - atomic_full_barrier (); - - lll_futex_wake (&mutex->__data.__lock, INT_MAX); - - return 0; -} -- cgit 1.4.1