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-rw-r--r--sysdeps/unix/sysv/linux/x86/elision-trylock.c75
1 files changed, 0 insertions, 75 deletions
diff --git a/sysdeps/unix/sysv/linux/x86/elision-trylock.c b/sysdeps/unix/sysv/linux/x86/elision-trylock.c
deleted file mode 100644
index c19293bf7a..0000000000
--- a/sysdeps/unix/sysv/linux/x86/elision-trylock.c
+++ /dev/null
@@ -1,75 +0,0 @@
-/* elision-trylock.c: Lock eliding trylock for pthreads.
-   Copyright (C) 2013-2017 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.  See __lll_lock_elision for
-     why we need atomic accesses.  Relaxed MO is sufficient because this is
-     just a hint.  */
-  if (atomic_load_relaxed (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.  See above for MO.  */
-          if (atomic_load_relaxed (adapt_count)
-              != aconf.skip_lock_internal_abort)
-            atomic_store_relaxed (adapt_count, aconf.skip_lock_internal_abort);
-        }
-      /* Could do some retries here.  */
-    }
-  else
-    {
-      /* Lost updates are possible but harmless (see above).  */
-      atomic_store_relaxed (adapt_count,
-	  atomic_load_relaxed (adapt_count) - 1);
-    }
-
-  return lll_trylock (*futex);
-}