LCOM1920-T02G10

/*        $NetBSD: syncobj.h,v 1.8 2009/10/21 21:12:07 rmind Exp $        */

/*-

 * Copyright (c) 2007, 2008 The NetBSD Foundation, Inc.

 * All rights reserved.

 *

 * This code is derived from software contributed to The NetBSD Foundation

 * by Andrew Doran.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS

 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED

 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS

 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

 * POSSIBILITY OF SUCH DAMAGE.

 */

#if !defined(_SYS_SYNCOBJ_H_)

#define        _SYS_SYNCOBJ_H_

struct lwp;

typedef volatile const void *wchan_t;

#if defined(_KERNEL)

/*

 * Synchronisation object operations set.

 */

typedef struct syncobj {

        u_int        sobj_flag;

        void        (*sobj_unsleep)(struct lwp *, bool);

        void        (*sobj_changepri)(struct lwp *, pri_t);

        void        (*sobj_lendpri)(struct lwp *, pri_t);

        struct lwp *(*sobj_owner)(wchan_t);

} syncobj_t;

struct lwp *syncobj_noowner(wchan_t);

#define        SOBJ_SLEEPQ_SORTED        0x01

#define        SOBJ_SLEEPQ_FIFO        0x02

#define        SOBJ_SLEEPQ_LIFO        0x04

extern syncobj_t        sched_syncobj;

extern syncobj_t        mutex_syncobj;

extern syncobj_t        rw_syncobj;

extern syncobj_t        sleep_syncobj;

#endif /* defined(_KERNEL) */

#endif /* !_SYS_SYNCOBJ_H_ */