Home | History | Annotate | Line # | Download | only in sys 
      1 /*	$NetBSD: syncobj.h,v 1.18 2023/10/15 10:27:11 riastradh Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2007, 2008, 2020, 2023 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Andrew Doran.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #if !defined(_SYS_SYNCOBJ_H_)
     33 #define	_SYS_SYNCOBJ_H_
     34 
     35 #include <sys/wchan.h>
     36 
     37 struct lwp;
     38 
     39 #if defined(_KERNEL) || defined(_KMEMUSER)
     40 
     41 /*
     42  * Synchronisation object operations set.
     43  */
     44 typedef struct syncobj {
     45 	char	sobj_name[16];
     46 	u_int	sobj_flag;
     47 	int	sobj_boostpri;
     48 	void	(*sobj_unsleep)(struct lwp *, bool);
     49 	void	(*sobj_changepri)(struct lwp *, pri_t);
     50 	void	(*sobj_lendpri)(struct lwp *, pri_t);
     51 	struct lwp *(*sobj_owner)(wchan_t);
     52 } const syncobj_t;
     53 
     54 struct lwp *syncobj_noowner(wchan_t);
     55 
     56 #define	SOBJ_SLEEPQ_SORTED	0x01
     57 #define	SOBJ_SLEEPQ_LIFO	0x04
     58 #define	SOBJ_SLEEPQ_NULL	0x08
     59 
     60 extern syncobj_t	callout_syncobj;
     61 extern syncobj_t	cv_syncobj;
     62 extern syncobj_t	kpause_syncobj;
     63 extern syncobj_t	lwp_park_syncobj;
     64 extern syncobj_t	mutex_syncobj;
     65 extern syncobj_t	rw_syncobj;
     66 extern syncobj_t	sched_syncobj;
     67 extern syncobj_t	select_syncobj;
     68 extern syncobj_t	sleep_syncobj;
     69 
     70 #endif /* defined(_KERNEL) */
     71 
     72 #endif /* !_SYS_SYNCOBJ_H_ */
     73