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authormarkm <markm@FreeBSD.org>2001-05-01 08:13:21 +0000
committermarkm <markm@FreeBSD.org>2001-05-01 08:13:21 +0000
commitbcca5847d5e7a197302d7689cd358f5ce6316d0a (patch)
treea1f5dea8640fa8bdeebec40477b6fdcf33b3e51b /sys/sys/_mutex.h
parent7d3d350edce373e3ec1e8e7fe7d94bb08d031a24 (diff)
downloadFreeBSD-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.h47
1 files changed, 47 insertions, 0 deletions
diff --git a/sys/sys/_mutex.h b/sys/sys/_mutex.h
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+/*-
+ * 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_ */
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