| /*- |
| * Copyright (c) 2007 Stephan Uphoff <ups@FreeBSD.org> |
| * All rights reserved. |
| * |
| * 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. |
| * 3. Neither the name of the author nor the names of any co-contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. |
| * |
| * $FreeBSD$ |
| */ |
| |
| #ifndef _BSD_SYS_RMLOCK_H_ |
| #define _BSD_SYS_RMLOCK_H_ |
| |
| #include <sys/bsd_mutex.h> |
| #include <sys/bsd__lock.h> |
| #include <sys/bsd__rmlock.h> |
| |
| #ifdef _FREEBSD_KERNEL |
| |
| /* |
| * Flags passed to rm_init(9). |
| */ |
| #define RM_NOWITNESS 0x00000001 |
| #define RM_RECURSE 0x00000002 |
| |
| void rm_init(struct rmlock *rm, const char *name); |
| void rm_init_flags(struct rmlock *rm, const char *name, int opts); |
| void rm_destroy(struct rmlock *rm); |
| int rm_wowned(struct rmlock *rm); |
| void rm_sysinit(void *arg); |
| void rm_sysinit_flags(void *arg); |
| |
| void _rm_wlock_debug(struct rmlock *rm, const char *file, int line); |
| void _rm_wunlock_debug(struct rmlock *rm, const char *file, int line); |
| void _rm_rlock_debug(struct rmlock *rm, struct rm_priotracker *tracker, |
| const char *file, int line); |
| void _rm_runlock_debug(struct rmlock *rm, struct rm_priotracker *tracker, |
| const char *file, int line); |
| |
| void _rm_wlock(struct rmlock *rm); |
| void _rm_wunlock(struct rmlock *rm); |
| void _rm_rlock(struct rmlock *rm, struct rm_priotracker *tracker); |
| void _rm_runlock(struct rmlock *rm, struct rm_priotracker *tracker); |
| |
| /* |
| * Public interface for lock operations. |
| */ |
| #ifndef LOCK_DEBUG |
| #error LOCK_DEBUG not defined, include <sys/lock.h> before <sys/bsd_rmlock.h> |
| #endif |
| |
| #if LOCK_DEBUG > 0 |
| #define rm_wlock(rm) _rm_wlock_debug((rm), LOCK_FILE, LOCK_LINE) |
| #define rm_wunlock(rm) _rm_wunlock_debug((rm), LOCK_FILE, LOCK_LINE) |
| #define rm_rlock(rm,tracker) \ |
| _rm_rlock_debug((rm),(tracker), LOCK_FILE, LOCK_LINE ) |
| #define rm_runlock(rm,tracker) \ |
| _rm_runlock_debug((rm), (tracker), LOCK_FILE, LOCK_LINE ) |
| #else |
| #define rm_wlock(rm) _rm_wlock((rm)) |
| #define rm_wunlock(rm) _rm_wunlock((rm)) |
| #define rm_rlock(rm,tracker) _rm_rlock((rm),(tracker)) |
| #define rm_runlock(rm,tracker) _rm_runlock((rm), (tracker)) |
| #endif |
| |
| struct rm_args { |
| struct rmlock *ra_rm; |
| const char *ra_desc; |
| }; |
| |
| struct rm_args_flags { |
| struct rmlock *ra_rm; |
| const char *ra_desc; |
| int ra_opts; |
| }; |
| |
| #define RM_SYSINIT(name, rm, desc) \ |
| static struct rm_args name##_args = { \ |
| (rm), \ |
| (desc), \ |
| }; \ |
| SYSINIT(name##_rm_sysinit, SI_SUB_LOCK, SI_ORDER_MIDDLE, \ |
| rm_sysinit, &name##_args); \ |
| SYSUNINIT(name##_rm_sysuninit, SI_SUB_LOCK, SI_ORDER_MIDDLE, \ |
| rm_destroy, (rm)) |
| |
| |
| #define RM_SYSINIT_FLAGS(name, rm, desc, opts) \ |
| static struct rm_args name##_args = { \ |
| (rm), \ |
| (desc), \ |
| (opts), \ |
| }; \ |
| SYSINIT(name##_rm_sysinit, SI_SUB_LOCK, SI_ORDER_MIDDLE, \ |
| rm_sysinit_flags, &name##_args); \ |
| SYSUNINIT(name##_rm_sysuninit, SI_SUB_LOCK, SI_ORDER_MIDDLE, \ |
| rm_destroy, (rm)) |
| |
| #endif /* _FREEBSD_KERNEL */ |
| #endif /* !_BSD_SYS_RMLOCK_H_ */ |