diff options
author | Waldemar Brodkorb <wbx@openadk.org> | 2016-05-28 18:12:58 +0200 |
---|---|---|
committer | Waldemar Brodkorb <wbx@uclibc-ng.org> | 2016-11-04 00:03:07 +0100 |
commit | b8fcdddcbb192fc367ff04bbd753b9deb69b09f3 (patch) | |
tree | 8febdb9d4e3d090e9273c29df9ff06116196c8e4 /libpthread/nptl/sysdeps/nios2/pthread_spin_trylock.c | |
parent | 191739597c6d380692885cfdd8dd8aa4f31f029d (diff) |
nios2: sync support with glibc
Only static linking is supported for now.
More debugging and analyzing for ld.so, TLS and NPTL
is required. But at least you can bootup a static
root fileystem in Qemu.
Diffstat (limited to 'libpthread/nptl/sysdeps/nios2/pthread_spin_trylock.c')
-rw-r--r-- | libpthread/nptl/sysdeps/nios2/pthread_spin_trylock.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/libpthread/nptl/sysdeps/nios2/pthread_spin_trylock.c b/libpthread/nptl/sysdeps/nios2/pthread_spin_trylock.c new file mode 100644 index 000000000..4e1a96c03 --- /dev/null +++ b/libpthread/nptl/sysdeps/nios2/pthread_spin_trylock.c @@ -0,0 +1,27 @@ +/* pthread_spin_trylock -- trylock a spin lock. Generic version. + Copyright (C) 2012-2016 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 + <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; +} |