1f53d15feSStephan Uphoff /*- 2f53d15feSStephan Uphoff * Copyright (c) 2007 Stephan Uphoff <ups@FreeBSD.org> 3f53d15feSStephan Uphoff * All rights reserved. 4f53d15feSStephan Uphoff * 5f53d15feSStephan Uphoff * Redistribution and use in source and binary forms, with or without 6f53d15feSStephan Uphoff * modification, are permitted provided that the following conditions 7f53d15feSStephan Uphoff * are met: 8f53d15feSStephan Uphoff * 1. Redistributions of source code must retain the above copyright 9f53d15feSStephan Uphoff * notice, this list of conditions and the following disclaimer. 10f53d15feSStephan Uphoff * 2. Redistributions in binary form must reproduce the above copyright 11f53d15feSStephan Uphoff * notice, this list of conditions and the following disclaimer in the 12f53d15feSStephan Uphoff * documentation and/or other materials provided with the distribution. 13f53d15feSStephan Uphoff * 3. Neither the name of the author nor the names of any co-contributors 14f53d15feSStephan Uphoff * may be used to endorse or promote products derived from this software 15f53d15feSStephan Uphoff * without specific prior written permission. 16f53d15feSStephan Uphoff * 17f53d15feSStephan Uphoff * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18f53d15feSStephan Uphoff * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19f53d15feSStephan Uphoff * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20f53d15feSStephan Uphoff * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21f53d15feSStephan Uphoff * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22f53d15feSStephan Uphoff * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23f53d15feSStephan Uphoff * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24f53d15feSStephan Uphoff * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25f53d15feSStephan Uphoff * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26f53d15feSStephan Uphoff * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27f53d15feSStephan Uphoff * SUCH DAMAGE. 28f53d15feSStephan Uphoff * 29f53d15feSStephan Uphoff * $FreeBSD$ 30f53d15feSStephan Uphoff */ 31f53d15feSStephan Uphoff 32f53d15feSStephan Uphoff #ifndef _SYS_RMLOCK_H_ 33f53d15feSStephan Uphoff #define _SYS_RMLOCK_H_ 34f53d15feSStephan Uphoff 35f53d15feSStephan Uphoff #include <sys/mutex.h> 36f53d15feSStephan Uphoff 37f53d15feSStephan Uphoff #include <sys/_lock.h> 38f53d15feSStephan Uphoff #include <sys/_rmlock.h> 39f53d15feSStephan Uphoff 40f53d15feSStephan Uphoff #ifdef _KERNEL 41f53d15feSStephan Uphoff 42f53d15feSStephan Uphoff 43f53d15feSStephan Uphoff void rm_init(struct rmlock *rm, const char *name, int opts); 44f53d15feSStephan Uphoff void rm_destroy(struct rmlock *rm); 45f53d15feSStephan Uphoff void rm_sysinit(void *arg); 46f53d15feSStephan Uphoff 47f53d15feSStephan Uphoff 48f53d15feSStephan Uphoff void _rm_wlock_debug(struct rmlock *rm, const char *file, int line); 49f53d15feSStephan Uphoff void _rm_wunlock_debug(struct rmlock *rm, const char *file, int line); 50f53d15feSStephan Uphoff void _rm_rlock_debug(struct rmlock *rm, struct rm_priotracker *tracker, 51f53d15feSStephan Uphoff const char *file, int line); 52f53d15feSStephan Uphoff void _rm_runlock_debug(struct rmlock *rm, struct rm_priotracker *tracker, 53f53d15feSStephan Uphoff const char *file, int line); 54f53d15feSStephan Uphoff 55f53d15feSStephan Uphoff 56f53d15feSStephan Uphoff void _rm_wlock(struct rmlock *rm); 57f53d15feSStephan Uphoff void _rm_wunlock(struct rmlock *rm); 58f53d15feSStephan Uphoff void _rm_rlock(struct rmlock *rm, struct rm_priotracker *tracker); 59f53d15feSStephan Uphoff void _rm_runlock(struct rmlock *rm, struct rm_priotracker *tracker); 60f53d15feSStephan Uphoff 61f53d15feSStephan Uphoff /* 62f53d15feSStephan Uphoff * Public interface for lock operations. 63f53d15feSStephan Uphoff * 64f53d15feSStephan Uphoff */ 65f53d15feSStephan Uphoff 66f53d15feSStephan Uphoff #ifndef LOCK_DEBUG 67f53d15feSStephan Uphoff #error LOCK_DEBUG not defined, include <sys/lock.h> before <sys/rmlock.h> 68f53d15feSStephan Uphoff #endif 69f53d15feSStephan Uphoff 70f53d15feSStephan Uphoff #if LOCK_DEBUG > 0 71f53d15feSStephan Uphoff 72f53d15feSStephan Uphoff #define rm_wlock(rm) _rm_wlock_debug((rm), LOCK_FILE, LOCK_LINE) 73f53d15feSStephan Uphoff #define rm_wunlock(rm) _rm_wunlock_debug((rm), LOCK_FILE, LOCK_LINE) 74f53d15feSStephan Uphoff #define rm_rlock(rm,tracker) \ 75f53d15feSStephan Uphoff _rm_rlock_debug((rm),(tracker), LOCK_FILE, LOCK_LINE ) 76f53d15feSStephan Uphoff #define rm_runlock(rm,tracker) \ 77f53d15feSStephan Uphoff _rm_runlock_debug((rm), (tracker), LOCK_FILE, LOCK_LINE ) 78f53d15feSStephan Uphoff 79f53d15feSStephan Uphoff #else 80f53d15feSStephan Uphoff 81f53d15feSStephan Uphoff #define rm_wlock(rm) _rm_wlock((rm)) 82f53d15feSStephan Uphoff #define rm_wunlock(rm) _rm_wunlock((rm)) 83f53d15feSStephan Uphoff #define rm_rlock(rm,tracker) _rm_rlock((rm),(tracker)) 84f53d15feSStephan Uphoff #define rm_runlock(rm,tracker) _rm_runlock((rm), (tracker)) 85f53d15feSStephan Uphoff 86f53d15feSStephan Uphoff #endif 87f53d15feSStephan Uphoff 88f53d15feSStephan Uphoff #define rm_initialized(rm) lock_initalized(&(rm)->lock_object) 89f53d15feSStephan Uphoff 90f53d15feSStephan Uphoff struct rm_args { 91f53d15feSStephan Uphoff struct rmlock *ra_rm; 92f53d15feSStephan Uphoff const char *ra_desc; 93f53d15feSStephan Uphoff int ra_opts; 94f53d15feSStephan Uphoff }; 95f53d15feSStephan Uphoff 96f53d15feSStephan Uphoff #define RM_SYSINIT(name, rm, desc, opts) \ 97f53d15feSStephan Uphoff static struct rm_args name##_args = { \ 98f53d15feSStephan Uphoff (rm), \ 99f53d15feSStephan Uphoff (desc), \ 100f53d15feSStephan Uphoff (opts), \ 101f53d15feSStephan Uphoff }; \ 102f53d15feSStephan Uphoff SYSINIT(name##_rm_sysinit, SI_SUB_LOCK, SI_ORDER_MIDDLE, \ 103f53d15feSStephan Uphoff rm_sysinit, &name##_args); \ 104f53d15feSStephan Uphoff SYSUNINIT(name##_rm_sysuninit, SI_SUB_LOCK, SI_ORDER_MIDDLE, \ 105f53d15feSStephan Uphoff rm_destroy, (rm)) 106f53d15feSStephan Uphoff 107f53d15feSStephan Uphoff 108f53d15feSStephan Uphoff #endif /* _KERNEL */ 109f53d15feSStephan Uphoff #endif /* !_SYS_RMLOCK_H_ */ 110