nptl/sysdeps/unix/sysv/linux/x86/elision-conf.h

   1 /* elision-conf.h: Lock elision tunable parameters.
   2    Copyright (C) 2013-2014 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   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 #ifndef _ELISION_CONF_H
  19 #define _ELISION_CONF_H 1
  20
  21 #include <pthread.h>
  22 #include <cpuid.h>
  23 #include <time.h>
  24
  25 /* Should make sure there is no false sharing on this.  */
  26
  27 struct elision_config
  28 {
  29   int skip_lock_busy;
  30   int skip_lock_internal_abort;
  31   int retry_try_xbegin;
  32   int skip_trylock_internal_abort;
  33 };
  34
  35 extern struct elision_config __elision_aconf attribute_hidden;
  36
  37 extern int __elision_available attribute_hidden;
  38 extern int __pthread_force_elision attribute_hidden;
  39
  40 /* Tell the test suite to test elision for this architecture.  */
  41 #define HAVE_ELISION 1
  42
  43 #endif