pt-spin.c

来自「GNU Hurd 源代码」· C语言 代码 · 共 37 行

/* Spin locks.  Mach version.
   Copyright (C) 2002, 2004 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 Library General Public License as
   published by the Free Software Foundation; either version 2 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with the GNU C Library; see the file COPYING.LIB.  If not,
   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

#include <pthread.h>
#include <machine-lock.h>

/* In glibc.  */
extern void __spin_lock_solid (__pthread_spinlock_t *lock);

/* Lock the spin lock object LOCK.  If the lock is held by another
   thread spin until it becomes available.  */
int
_pthread_spin_lock (__pthread_spinlock_t *lock)
{
  __spin_lock_solid (lock);
  return 0;
}

weak_alias (_pthread_spin_lock, pthread_spin_lock);
weak_alias (_pthread_spin_lock, __pthread_spin_lock);