newlib-cygwin/newlib/libc/sys/linux/linuxthreads/bits/initspin.h

29 lines
1.3 KiB
C

/* Generic definitions for spinlock initializers.
Copyright (C) 2000, 2001 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. */
/* Initial value of a spinlock. Most platforms should use zero,
unless they only implement a "test and clear" operation instead of
the usual "test and set". */
#define __LT_SPINLOCK_INIT 0
/* Macros for lock initializers, using the above definition. */
#define __LOCK_INITIALIZER { 0, __LT_SPINLOCK_INIT }
#define __ALT_LOCK_INITIALIZER { 0, __LT_SPINLOCK_INIT }
#define __ATOMIC_INITIALIZER { 0, __LT_SPINLOCK_INIT }