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authorWaldemar Brodkorb <wbx@openadk.org>2017-04-14 05:07:57 (GMT)
committerWaldemar Brodkorb <wbx@openadk.org>2017-05-14 08:29:09 (GMT)
commitbaad294eaf59e0e1b311a11448a04e3d3c5f3c56 (patch)
tree858d8924af34509f8742d025c6d8740f20464a97 /libpthread/nptl/sysdeps/or1k/pthread_spin_trylock.c
parent69ea4c1f65bff99575cd7f0210312dc355929240 (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.c26
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 0000000..4e9aa64
--- /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;
+}