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-rw-r--r--nptl/sysdeps/unix/sysv/linux/x86/elision-trylock.c71
1 files changed, 0 insertions, 71 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/x86/elision-trylock.c b/nptl/sysdeps/unix/sysv/linux/x86/elision-trylock.c
deleted file mode 100644
index a478ac18e3..0000000000
--- a/nptl/sysdeps/unix/sysv/linux/x86/elision-trylock.c
+++ /dev/null
@@ -1,71 +0,0 @@
-/* elision-trylock.c: Lock eliding trylock for pthreads.
-   Copyright (C) 2013-2014 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/>.  */
-
-#include <pthread.h>
-#include <pthreadP.h>
-#include <lowlevellock.h>
-#include "hle.h"
-#include <elision-conf.h>
-
-#define aconf __elision_aconf
-
-/* Try to elide a futex trylock.  FUTEX is the futex variable.  ADAPT_COUNT is
-   the adaptation counter in the mutex.  */
-
-int
-__lll_trylock_elision (int *futex, short *adapt_count)
-{
-  /* Implement POSIX semantics by forbiding nesting
-     trylock.  Sorry.  After the abort the code is re-executed
-     non transactional and if the lock was already locked
-     return an error.  */
-  _xabort (_ABORT_NESTED_TRYLOCK);
-
-  /* Only try a transaction if it's worth it.  */
-  if (*adapt_count <= 0)
-    {
-      unsigned status;
-
-      if ((status = _xbegin()) == _XBEGIN_STARTED)
-	{
-	  if (*futex == 0)
-	    return 0;
-
-	  /* Lock was busy.  Fall back to normal locking.
-	     Could also _xend here but xabort with 0xff code
-	     is more visible in the profiler.  */
-	  _xabort (_ABORT_LOCK_BUSY);
-	}
-
-      if (!(status & _XABORT_RETRY))
-        {
-          /* Internal abort.  No chance for retry.  For future
-             locks don't try speculation for some time.  */
-          if (*adapt_count != aconf.skip_trylock_internal_abort)
-            *adapt_count = aconf.skip_trylock_internal_abort;
-        }
-      /* Could do some retries here.  */
-    }
-  else
-    {
-      /* Lost updates are possible, but harmless.  */
-      (*adapt_count)--;
-    }
-
-  return lll_trylock (*futex);
-}