sysdeps/mach/htl/pt-spin.c

   1 /* Spin locks.  Mach version.
   2    Copyright (C) 2002-2019 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
  19 #include <machine-lock.h>
  20
  21 /* In glibc.  */
  22 extern void __spin_lock_solid (__spin_lock_t *lock);
  23
  24 /* Lock the spin lock object LOCK.  If the lock is held by another
  25    thread spin until it becomes available.  */
  26 int
  27 _pthread_spin_lock (__spin_lock_t *lock)
  28 {
  29   __spin_lock_solid (lock);
  30   return 0;
  31 }