diff options
author | Austin Foxley <austinf@cetoncorp.com> | 2010-02-17 16:52:15 -0800 |
---|---|---|
committer | Austin Foxley <austinf@cetoncorp.com> | 2010-02-17 16:55:05 -0800 |
commit | 44f3864ffcf205930a0cf7e553ab91f2cb01d02d (patch) | |
tree | 59c592810e0ece55af323938d3a5887e4b66206d /libpthread/nptl/sysdeps/pthread/pthread_barrier_destroy.c | |
parent | f09e8e4ba639d236322e10130fbc19845f61d59a (diff) |
move pthread_barrier_{init,destroy} to sysdeps/pthread
for archs that implement their own like sparc and x86_64
Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
Diffstat (limited to 'libpthread/nptl/sysdeps/pthread/pthread_barrier_destroy.c')
-rw-r--r-- | libpthread/nptl/sysdeps/pthread/pthread_barrier_destroy.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/libpthread/nptl/sysdeps/pthread/pthread_barrier_destroy.c b/libpthread/nptl/sysdeps/pthread/pthread_barrier_destroy.c new file mode 100644 index 000000000..2afe5b3c5 --- /dev/null +++ b/libpthread/nptl/sysdeps/pthread/pthread_barrier_destroy.c @@ -0,0 +1,44 @@ +/* Copyright (C) 2002, 2007 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. + + 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 "pthreadP.h" +#include <lowlevellock.h> + + +int +pthread_barrier_destroy ( + pthread_barrier_t *barrier) +{ + struct pthread_barrier *ibarrier; + int result = EBUSY; + + ibarrier = (struct pthread_barrier *) barrier; + + lll_lock (ibarrier->lock, ibarrier->private ^ FUTEX_PRIVATE_FLAG); + + if (__builtin_expect (ibarrier->left == ibarrier->init_count, 1)) + /* The barrier is not used anymore. */ + result = 0; + else + /* Still used, return with an error. */ + lll_unlock (ibarrier->lock, ibarrier->private ^ FUTEX_PRIVATE_FLAG); + + return result; +} |