diff options
author | markm <markm@FreeBSD.org> | 2001-05-01 08:13:21 +0000 |
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committer | markm <markm@FreeBSD.org> | 2001-05-01 08:13:21 +0000 |
commit | bcca5847d5e7a197302d7689cd358f5ce6316d0a (patch) | |
tree | a1f5dea8640fa8bdeebec40477b6fdcf33b3e51b /sys/sys/_mutex.h | |
parent | 7d3d350edce373e3ec1e8e7fe7d94bb08d031a24 (diff) | |
download | FreeBSD-src-bcca5847d5e7a197302d7689cd358f5ce6316d0a.zip FreeBSD-src-bcca5847d5e7a197302d7689cd358f5ce6316d0a.tar.gz |
Undo part of the tangle of having sys/lock.h and sys/mutex.h included in
other "system" header files.
Also help the deprecation of lockmgr.h by making it a sub-include of
sys/lock.h and removing sys/lockmgr.h form kernel .c files.
Sort sys/*.h includes where possible in affected files.
OK'ed by: bde (with reservations)
Diffstat (limited to 'sys/sys/_mutex.h')
-rw-r--r-- | sys/sys/_mutex.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/sys/sys/_mutex.h b/sys/sys/_mutex.h new file mode 100644 index 0000000..4f0a951 --- /dev/null +++ b/sys/sys/_mutex.h @@ -0,0 +1,47 @@ +/*- + * Copyright (c) 1997 Berkeley Software Design, Inc. 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. Berkeley Software Design Inc's name may not be used to endorse or + * promote products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN INC ``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 BERKELEY SOFTWARE DESIGN INC 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 _SYS_MUTEX_TYPES_H_ +#define _SYS_MUTEX_TYPES_H_ + +/* + * Sleep/spin mutex + */ + +struct mtx { + struct lock_object mtx_object; /* Common lock properties. */ + volatile uintptr_t mtx_lock; /* owner (and state for sleep locks) */ + volatile u_int mtx_recurse; /* number of recursive holds */ + critical_t mtx_savecrit; /* saved flags (for spin locks) */ + TAILQ_HEAD(, proc) mtx_blocked; /* threads blocked on this lock */ + LIST_ENTRY(mtx) mtx_contested; /* list of all contested locks */ +}; + +#endif /* !_SYS_MUTEX_TYPES_H_ */ |