1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1997 Berkeley Software Design, Inc. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. Berkeley Software Design Inc's name may not be used to endorse or 15 * promote products derived from this software without specific prior 16 * written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN INC ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL BERKELEY SOFTWARE DESIGN INC BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 * $FreeBSD$ 31 */ 32 33 #ifndef _SYS__LOCK_H_ 34 #define _SYS__LOCK_H_ 35 36 struct lock_object { 37 const char *lo_name; /* Individual lock name. */ 38 u_int lo_flags; 39 u_int lo_data; /* General class specific data. */ 40 struct witness *lo_witness; /* Data for witness. */ 41 }; 42 43 #ifdef _KERNEL 44 /* 45 * If any of WITNESS, INVARIANTS, or KTR_LOCK KTR tracing has been enabled, 46 * then turn on LOCK_DEBUG. When this option is on, extra debugging 47 * facilities such as tracking the file and line number of lock operations 48 * are enabled. Also, mutex locking operations are not inlined to avoid 49 * bloat from all the extra debugging code. We also have to turn on all the 50 * calling conventions for this debugging code in modules so that modules can 51 * work with both debug and non-debug kernels. 52 */ 53 #if (defined(KLD_MODULE) && !defined(KLD_TIED)) || defined(WITNESS) || defined(INVARIANTS) || \ 54 defined(LOCK_PROFILING) || defined(KTR) 55 #define LOCK_DEBUG 1 56 #else 57 #define LOCK_DEBUG 0 58 #endif 59 60 /* 61 * In the LOCK_DEBUG case, use the filename and line numbers for debugging 62 * operations. Otherwise, use default values to avoid the unneeded bloat. 63 */ 64 #if LOCK_DEBUG > 0 65 #define LOCK_FILE_LINE_ARG_DEF , const char *file, int line 66 #define LOCK_FILE_LINE_ARG , file, line 67 #define LOCK_FILE __FILE__ 68 #define LOCK_LINE __LINE__ 69 #else 70 #define LOCK_FILE_LINE_ARG_DEF 71 #define LOCK_FILE_LINE_ARG 72 #define LOCK_FILE NULL 73 #define LOCK_LINE 0 74 #endif 75 #endif /* _KERNEL */ 76 77 #endif /* !_SYS__LOCK_H_ */ 78