sysdeps/unix/sysv/linux/s390/lowlevellock.h

   1 /* Copyright (C) 2003-2016 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 2003.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #ifndef _S390_LOWLEVELLOCK_H
  20 #define _S390_LOWLEVELLOCK_H    1
  21
  22 #include <sysdeps/nptl/lowlevellock.h>
  23
  24 /* Transactional lock elision definitions.  */
  25 # ifdef ENABLE_LOCK_ELISION
  26 extern int __lll_timedlock_elision
  27   (int *futex, short *adapt_count, const struct timespec *timeout, int private)
  28   attribute_hidden;
  29
  30 #  define lll_timedlock_elision(futex, adapt_count, timeout, private)   \
  31   __lll_timedlock_elision(&(futex), &(adapt_count), timeout, private)
  32
  33 extern int __lll_lock_elision (int *futex, short *adapt_count, int private)
  34   attribute_hidden;
  35
  36 extern int __lll_unlock_elision(int *futex, int private)
  37   attribute_hidden;
  38
  39 extern int __lll_trylock_elision(int *futex, short *adapt_count)
  40   attribute_hidden;
  41
  42 #  define lll_lock_elision(futex, adapt_count, private) \
  43   __lll_lock_elision (&(futex), &(adapt_count), private)
  44 #  define lll_unlock_elision(futex, adapt_count, private) \
  45   __lll_unlock_elision (&(futex), private)
  46 #  define lll_trylock_elision(futex, adapt_count) \
  47   __lll_trylock_elision(&(futex), &(adapt_count))
  48 # endif  /* ENABLE_LOCK_ELISION */
  49
  50 #endif  /* lowlevellock.h */