diff options
author | Waldemar Brodkorb <wbx@openadk.org> | 2017-04-14 07:07:57 +0200 |
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committer | Waldemar Brodkorb <wbx@openadk.org> | 2017-05-14 10:29:09 +0200 |
commit | baad294eaf59e0e1b311a11448a04e3d3c5f3c56 (patch) | |
tree | 858d8924af34509f8742d025c6d8740f20464a97 /libpthread/nptl/sysdeps/or1k/pthread_spin_trylock.c | |
parent | 69ea4c1f65bff99575cd7f0210312dc355929240 (diff) |
or1k: add NPTL/TLS support
Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
Diffstat (limited to 'libpthread/nptl/sysdeps/or1k/pthread_spin_trylock.c')
-rw-r--r-- | libpthread/nptl/sysdeps/or1k/pthread_spin_trylock.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/libpthread/nptl/sysdeps/or1k/pthread_spin_trylock.c b/libpthread/nptl/sysdeps/or1k/pthread_spin_trylock.c new file mode 100644 index 000000000..4e9aa64d3 --- /dev/null +++ b/libpthread/nptl/sysdeps/or1k/pthread_spin_trylock.c @@ -0,0 +1,26 @@ +/* pthread_spin_trylock -- trylock a spin lock. Generic version. + Copyright (C) 2012-2016 Free Software Foundation, Inc. + + 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 + <http://www.gnu.org/licenses/>. */ + +#include <errno.h> +#include <atomic.h> +#include "pthreadP.h" + +int +pthread_spin_trylock (pthread_spinlock_t *lock) +{ + return atomic_exchange_acq (lock, 1) ? EBUSY : 0; +} |