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Diffstat (limited to 'sysdeps/unix/sysv/linux/powerpc/elision-trylock.c')
-rw-r--r--sysdeps/unix/sysv/linux/powerpc/elision-trylock.c69
1 files changed, 0 insertions, 69 deletions
diff --git a/sysdeps/unix/sysv/linux/powerpc/elision-trylock.c b/sysdeps/unix/sysv/linux/powerpc/elision-trylock.c
deleted file mode 100644
index ed244d3f12..0000000000
--- a/sysdeps/unix/sysv/linux/powerpc/elision-trylock.c
+++ /dev/null
@@ -1,69 +0,0 @@
-/* elision-trylock.c: Lock eliding trylock for pthreads.
- Copyright (C) 2015-2017 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 <elision-conf.h>
-#include "htm.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 elided trylocks. */
- __libc_tabort (_ABORT_NESTED_TRYLOCK);
-
- /* Only try a transaction if it's worth it. */
- if (atomic_load_relaxed (adapt_count) > 0)
- {
- goto use_lock;
- }
-
- if (__libc_tbegin (0))
- {
- if (*futex == 0)
- return 0;
-
- /* Lock was busy. This is never a nested transaction.
- End it, and set the adapt count. */
- __libc_tend (0);
-
- if (aconf.skip_lock_busy > 0)
- atomic_store_relaxed (adapt_count, aconf.skip_lock_busy);
- }
- else
- {
- if (_TEXASRU_FAILURE_PERSISTENT (__builtin_get_texasru ()))
- {
- /* A persistent failure indicates that a retry will probably
- result in another failure. Use normal locking now and
- for the next couple of calls. */
- if (aconf.skip_trylock_internal_abort > 0)
- atomic_store_relaxed (adapt_count,
- aconf.skip_trylock_internal_abort);
- }
- }
-
-use_lock:
- return lll_trylock (*futex);
-}