summaryrefslogtreecommitdiff
path: root/nptl/sysdeps/pthread/pthread_barrier_wait.c
diff options
context:
space:
mode:
Diffstat (limited to 'nptl/sysdeps/pthread/pthread_barrier_wait.c')
-rw-r--r--nptl/sysdeps/pthread/pthread_barrier_wait.c77
1 files changed, 0 insertions, 77 deletions
diff --git a/nptl/sysdeps/pthread/pthread_barrier_wait.c b/nptl/sysdeps/pthread/pthread_barrier_wait.c
deleted file mode 100644
index c6b563f242..0000000000
--- a/nptl/sysdeps/pthread/pthread_barrier_wait.c
+++ /dev/null
@@ -1,77 +0,0 @@
-/* Copyright (C) 2003, 2004 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 2003.
-
- 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 <errno.h>
-#include <sysdep.h>
-#include <lowlevellock.h>
-#include <pthreadP.h>
-
-
-/* Wait on barrier. */
-int
-pthread_barrier_wait (barrier)
- pthread_barrier_t *barrier;
-{
- struct pthread_barrier *ibarrier = (struct pthread_barrier *) barrier;
- int result = 0;
-
- /* Make sure we are alone. */
- lll_lock (ibarrier->lock);
-
- /* One more arrival. */
- --ibarrier->left;
-
- /* Are these all? */
- if (ibarrier->left == 0)
- {
- /* Yes. Increment the event counter to avoid invalid wake-ups and
- tell the current waiters that it is their turn. */
- ++ibarrier->curr_event;
-
- /* Wake up everybody. */
- lll_futex_wake (&ibarrier->curr_event, INT_MAX);
-
- /* This is the thread which finished the serialization. */
- result = PTHREAD_BARRIER_SERIAL_THREAD;
- }
- else
- {
- /* The number of the event we are waiting for. The barrier's event
- number must be bumped before we continue. */
- unsigned int event = ibarrier->curr_event;
-
- /* Before suspending, make the barrier available to others. */
- lll_unlock (ibarrier->lock);
-
- /* Wait for the event counter of the barrier to change. */
- do
- lll_futex_wait (&ibarrier->curr_event, event);
- while (event == ibarrier->curr_event);
- }
-
- /* Make sure the init_count is stored locally or in a register. */
- unsigned int init_count = ibarrier->init_count;
-
- /* If this was the last woken thread, unlock. */
- if (atomic_increment_val (&ibarrier->left) == init_count)
- /* We are done. */
- lll_unlock (ibarrier->lock);
-
- return result;
-}