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-rw-r--r--sysdeps/generic/elide.h25
1 files changed, 25 insertions, 0 deletions
diff --git a/sysdeps/generic/elide.h b/sysdeps/generic/elide.h
new file mode 100644
index 0000000000..180e632426
--- /dev/null
+++ b/sysdeps/generic/elide.h
@@ -0,0 +1,25 @@
+/* elide.h: Fallback noop lock elision support.
+   Copyright (C) 2014 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/>.  */
+#ifndef ELIDE_H
+#define ELIDE_H 1
+
+#define ELIDE_LOCK(adapt_count, is_lock_free) 0
+#define ELIDE_TRYLOCK(adapt_count, is_lock_free, write) 0
+#define ELIDE_UNLOCK(is_lock_free) 0
+
+#endif