1 /* $NetBSD: syncobj.h,v 1.8 2009/10/21 21:12:07 rmind Exp $ */ 2 3 /*- 4 * Copyright (c) 2007, 2008 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 struct lwp; 36 37 typedef volatile const void *wchan_t; 38 39 #if defined(_KERNEL) 40 41 /* 42 * Synchronisation object operations set. 43 */ 44 typedef struct syncobj { 45 u_int sobj_flag; 46 void (*sobj_unsleep)(struct lwp *, bool); 47 void (*sobj_changepri)(struct lwp *, pri_t); 48 void (*sobj_lendpri)(struct lwp *, pri_t); 49 struct lwp *(*sobj_owner)(wchan_t); 50 } syncobj_t; 51 52 struct lwp *syncobj_noowner(wchan_t); 53 54 #define SOBJ_SLEEPQ_SORTED 0x01 55 #define SOBJ_SLEEPQ_FIFO 0x02 56 #define SOBJ_SLEEPQ_LIFO 0x04 57 58 extern syncobj_t sched_syncobj; 59 extern syncobj_t mutex_syncobj; 60 extern syncobj_t rw_syncobj; 61 extern syncobj_t sleep_syncobj; 62 63 #endif /* defined(_KERNEL) */ 64 65 #endif /* !_SYS_SYNCOBJ_H_ */ 66