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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/sysdeps/unix/sysv/linux/sparc/sparc32/pthread_barrier_wait.c
parent0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (diff)
(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/sparc/sparc32/pthread_barrier_wait.c')
-rw-r--r--nptl/sysdeps/unix/sysv/linux/sparc/sparc32/pthread_barrier_wait.c100
1 files changed, 0 insertions, 100 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/sparc/sparc32/pthread_barrier_wait.c b/nptl/sysdeps/unix/sysv/linux/sparc/sparc32/pthread_barrier_wait.c
deleted file mode 100644
index 4dfd11dcbe..0000000000
--- a/nptl/sysdeps/unix/sysv/linux/sparc/sparc32/pthread_barrier_wait.c
+++ /dev/null
@@ -1,100 +0,0 @@
-/* Copyright (C) 2003, 2004, 2006 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>
-
-struct sparc_pthread_barrier
-{
- struct pthread_barrier b;
- unsigned char left_lock;
- unsigned char pshared;
-};
-
-/* Wait on barrier. */
-int
-pthread_barrier_wait (barrier)
- pthread_barrier_t *barrier;
-{
- struct sparc_pthread_barrier *ibarrier
- = (struct sparc_pthread_barrier *) barrier;
- int result = 0;
-
- /* Make sure we are alone. */
- lll_lock (ibarrier->b.lock);
-
- /* One more arrival. */
- --ibarrier->b.left;
-
- /* Are these all? */
- if (ibarrier->b.left == 0)
- {
- /* Yes. Increment the event counter to avoid invalid wake-ups and
- tell the current waiters that it is their turn. */
- ++ibarrier->b.curr_event;
-
- /* Wake up everybody. */
- lll_futex_wake (&ibarrier->b.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->b.curr_event;
-
- /* Before suspending, make the barrier available to others. */
- lll_unlock (ibarrier->b.lock);
-
- /* Wait for the event counter of the barrier to change. */
- do
- lll_futex_wait (&ibarrier->b.curr_event, event);
- while (event == ibarrier->b.curr_event);
- }
-
- /* Make sure the init_count is stored locally or in a register. */
- unsigned int init_count = ibarrier->b.init_count;
-
- /* If this was the last woken thread, unlock. */
- if (__atomic_is_v9 || ibarrier->pshared == 0)
- {
- if (atomic_increment_val (&ibarrier->b.left) == init_count)
- /* We are done. */
- lll_unlock (ibarrier->b.lock);
- }
- else
- {
- unsigned int left;
- /* Slightly more complicated. On pre-v9 CPUs, atomic_increment_val
- is only atomic for threads within the same process, not for
- multiple processes. */
- __sparc32_atomic_do_lock24 (&ibarrier->left_lock);
- left = ++ibarrier->b.left;
- __sparc32_atomic_do_unlock24 (&ibarrier->left_lock);
- if (left == init_count)
- /* We are done. */
- lll_unlock (ibarrier->b.lock);
- }
-
- return result;
-}