1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/ossrv/genericopenlibs/openenvcore/libc/include/spinlock.h	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,70 @@
     1.4 +/*
     1.5 + * Copyright (c) 1998 John Birrell <jb@cimlogic.com.au>.
     1.6 + * All rights reserved.
     1.7 + *
     1.8 + * Redistribution and use in source and binary forms, with or without
     1.9 + * modification, are permitted provided that the following conditions
    1.10 + * are met:
    1.11 + * 1. Redistributions of source code must retain the above copyright
    1.12 + *    notice, this list of conditions and the following disclaimer.
    1.13 + * 2. Redistributions in binary form must reproduce the above copyright
    1.14 + *    notice, this list of conditions and the following disclaimer in the
    1.15 + *    documentation and/or other materials provided with the distribution.
    1.16 + * 4. Neither the name of the author nor the names of any co-contributors
    1.17 + *    may be used to endorse or promote products derived from this software
    1.18 + *    without specific prior written permission.
    1.19 + *
    1.20 + * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
    1.21 + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    1.22 + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
    1.23 + * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
    1.24 + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
    1.25 + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
    1.26 + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
    1.27 + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
    1.28 + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
    1.29 + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
    1.30 + * SUCH DAMAGE.
    1.31 + *
    1.32 + * $FreeBSD: src/lib/libc/include/spinlock.h,v 1.7 2003/11/05 18:17:30 deischen Exp $
    1.33 + *
    1.34 + * Lock definitions used in both libc and libpthread.
    1.35 + *
    1.36 + */
    1.37 +
    1.38 +#ifndef _SPINLOCK_H_
    1.39 +#define _SPINLOCK_H_
    1.40 +#include <sys/cdefs.h>
    1.41 +#include <sys/types.h>
    1.42 +
    1.43 +/*
    1.44 + * Lock structure with room for debugging information.
    1.45 + */
    1.46 +struct _spinlock {
    1.47 +	volatile long	access_lock;
    1.48 +	volatile long	lock_owner;
    1.49 +	volatile char	*fname;
    1.50 +	volatile int	lineno;
    1.51 +};
    1.52 +typedef struct _spinlock spinlock_t;
    1.53 +
    1.54 +#define	_SPINLOCK_INITIALIZER	{ 0, 0, 0, 0 }
    1.55 +
    1.56 +#define _SPINUNLOCK(_lck)	_spinunlock(_lck);
    1.57 +#ifdef	_LOCK_DEBUG
    1.58 +#define	_SPINLOCK(_lck)		_spinlock_debug(_lck, __FILE__, __LINE__)
    1.59 +#else
    1.60 +#define	_SPINLOCK(_lck)		_spinlock(_lck)
    1.61 +#endif
    1.62 +
    1.63 +/*
    1.64 + * Thread function prototype definitions:
    1.65 + */
    1.66 +__BEGIN_DECLS
    1.67 +long	_atomic_lock(volatile long *);
    1.68 +void	_spinlock(spinlock_t *);
    1.69 +void	_spinunlock(spinlock_t *);
    1.70 +void	_spinlock_debug(spinlock_t *, char *, int);
    1.71 +__END_DECLS
    1.72 +
    1.73 +#endif /* _SPINLOCK_H_ */