From e64ac02c24b43659048622714afdc92fedf561fa Mon Sep 17 00:00:00 2001 From: Joseph Myers Date: Sun, 1 Jul 2012 13:06:41 +0000 Subject: Move all files into ports/ subdirectory in preparation for merge with glibc --- ports/sysdeps/arm/nptl/pthread_spin_trylock.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 ports/sysdeps/arm/nptl/pthread_spin_trylock.c (limited to 'ports/sysdeps/arm/nptl/pthread_spin_trylock.c') diff --git a/ports/sysdeps/arm/nptl/pthread_spin_trylock.c b/ports/sysdeps/arm/nptl/pthread_spin_trylock.c new file mode 100644 index 0000000000..7d3118071e --- /dev/null +++ b/ports/sysdeps/arm/nptl/pthread_spin_trylock.c @@ -0,0 +1,26 @@ +/* Copyright (C) 2008 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + 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, see + . */ + +#include +#include +#include "pthreadP.h" + +int +pthread_spin_trylock (pthread_spinlock_t *lock) +{ + return atomic_compare_and_exchange_val_acq (lock, 1, 0) ? EBUSY : 0; +} -- cgit v1.2.3