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authorUlrich Drepper <drepper@redhat.com>2004-12-22 20:10:10 +0000
committerUlrich Drepper <drepper@redhat.com>2004-12-22 20:10:10 +0000
commita334319f6530564d22e775935d9c91663623a1b4 (patch)
treeb5877475619e4c938e98757d518bb1e9cbead751 /nptl/pthread_mutex_setprioceiling.c
parent0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (diff)
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(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.
Diffstat (limited to 'nptl/pthread_mutex_setprioceiling.c')
-rw-r--r--nptl/pthread_mutex_setprioceiling.c116
1 files changed, 0 insertions, 116 deletions
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 <jakub@redhat.com>, 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 <stdbool.h>
-#include <errno.h>
-#include <pthreadP.h>
-
-
-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;
-}