diff options
Diffstat (limited to 'nptl/sysdeps/pthread/pthread_spin_unlock.c')
-rw-r--r-- | nptl/sysdeps/pthread/pthread_spin_unlock.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/nptl/sysdeps/pthread/pthread_spin_unlock.c b/nptl/sysdeps/pthread/pthread_spin_unlock.c new file mode 100644 index 0000000..f97cadf --- /dev/null +++ b/nptl/sysdeps/pthread/pthread_spin_unlock.c @@ -0,0 +1,30 @@ +/* pthread_spin_unlock -- unlock a spin lock. Generic version. + Copyright (C) 2003 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Paul Mackerras <paulus@au.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 "pthreadP.h" +#include <atomic.h> + +int +pthread_spin_unlock (pthread_spinlock_t *lock) +{ + atomic_full_barrier (); + *lock = 0; + return 0; +} |