sysdeps/nptl/pthread_mutex_conf.h

   1 /* Pthread mutex tunable parameters.
   2    Copyright (C) 2018-2022 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    <https://www.gnu.org/licenses/>.  */
  18 #ifndef _PTHREAD_MUTEX_CONF_H
  19 #define _PTHREAD_MUTEX_CONF_H 1
  20
  21 #include <adaptive_spin_count.h>
  22
  23 #if HAVE_TUNABLES
  24 struct mutex_config
  25 {
  26   int spin_count;
  27 };
  28
  29 extern struct mutex_config __mutex_aconf;
  30 libc_hidden_proto (__mutex_aconf)
  31
  32 extern void __pthread_tunables_init (void) attribute_hidden;
  33 #else
  34 static inline void
  35 __pthread_tunables_init (void)
  36 {
  37   /* No tunables to initialize.  */
  38 }
  39 #endif
  40
  41 #endif