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69 lines
2.7 KiB
C
69 lines
2.7 KiB
C
/*-
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* Copyright (c) 1997 Berkeley Software Design, Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Berkeley Software Design Inc's name may not be used to endorse or
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* promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN INC ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL BERKELEY SOFTWARE DESIGN INC BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _SYS__LOCK_H_
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#define _SYS__LOCK_H_
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struct lock_profile_object {
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/*
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* This does not result in variant structure sizes because
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* MUTEX_PROFILING is in opt_global.h
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*/
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u_int64_t lpo_acqtime;
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u_int64_t lpo_waittime;
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const char *lpo_filename;
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u_int lpo_namehash;
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int lpo_lineno;
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const char *lpo_type;
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/*
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* Fields relating to measuring contention on mutexes.
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* holding must be accessed atomically since it's
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* modified by threads that don't yet hold the mutex.
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* locking is only modified and referenced while
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* the mutex is held.
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*/
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u_int lpo_contest_holding;
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u_int lpo_contest_locking;
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};
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struct lock_object {
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const char *lo_name; /* Individual lock name. */
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const char *lo_type; /* General lock type. */
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u_int lo_flags;
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#ifdef LOCK_PROFILING
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struct lock_profile_object lo_profile_obj;
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#endif
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union { /* Data for witness. */
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STAILQ_ENTRY(lock_object) lod_list;
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struct witness *lod_witness;
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} lo_witness_data;
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};
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#endif /* !_SYS__LOCK_H_ */
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