1 /* $NetBSD: lockdebug.h,v 1.24 2026/08/17 01:52:09 riastradh Exp $ */ 2 3 /*- 4 * Copyright (c) 2006, 2007, 2008 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Andrew Doran. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef __SYS_LOCKDEBUG_H__ 33 #define __SYS_LOCKDEBUG_H__ 34 35 #ifdef _KERNEL_OPT 36 #include "opt_lockdebug.h" 37 #endif 38 39 #if !defined(_KERNEL) && !defined(_KMEMUSER) 40 #error "Sorry, nothing of interest to user level programs here." 41 #endif 42 43 #define LOCKOPS_SLEEP 0 44 #define LOCKOPS_SPIN 1 45 46 typedef void (*lockop_printer_t)(const char *, ...) __printflike(1, 2); 47 48 typedef struct lockops { 49 const char *lo_name; 50 int lo_type; 51 void (*lo_dump)(const volatile void *, lockop_printer_t); 52 } lockops_t; 53 54 #define LOCKDEBUG_ABORT(f, ln, l, o, m) \ 55 lockdebug_abort(f, ln, l, o, m) 56 57 void lockdebug_dismiss(void); 58 void lockdebug_abort(const char *, size_t, const volatile void *, 59 lockops_t *, const char *); 60 61 void lockdebug_lock_print(void *, void (*)(const char *, ...) 62 __printflike(1, 2)); 63 void lockdebug_show_all_locks(void (*)(const char *, ...) __printflike(1, 2), 64 const char *); 65 void lockdebug_show_lockstats(void (*)(const char *, ...) __printflike(1, 2)); 66 67 #ifdef LOCKDEBUG 68 69 bool lockdebug_alloc(const char *, size_t, volatile void *, lockops_t *, 70 uintptr_t); 71 void lockdebug_free(const char *, size_t, volatile void *); 72 void lockdebug_wantlock(const char *, size_t, const volatile void *, 73 uintptr_t, int); 74 void lockdebug_locked(const char *, size_t, volatile void *, void *, 75 uintptr_t, int); 76 void lockdebug_unlocked(const char *, size_t, volatile void *, 77 uintptr_t, int); 78 void lockdebug_barrier(const char *, size_t, volatile void *, int); 79 void lockdebug_mem_check(const char *, size_t, void *, size_t); 80 81 #define LOCKDEBUG_ALLOC(lock, ops, addr) \ 82 lockdebug_alloc(__func__, __LINE__, lock, ops, addr) 83 #define LOCKDEBUG_FREE(dodebug, lock) \ 84 if (dodebug) lockdebug_free(__func__, __LINE__, lock) 85 #define LOCKDEBUG_WANTLOCK(dodebug, lock, where, s, owantedp) \ 86 if (dodebug) { lockdebug_wantlock(__func__, __LINE__, lock, where, s); __USE(owantedp); } 87 #define LOCKDEBUG_LOCKED(dodebug, lock, al, where, s, owantedp) \ 88 if (dodebug) { lockdebug_locked(__func__, __LINE__, lock, al, where, s); __USE(owantedp); } 89 #define LOCKDEBUG_UNLOCKED(dodebug, lock, where, s) \ 90 if (dodebug) lockdebug_unlocked(__func__, __LINE__, lock, where, s) 91 #define LOCKDEBUG_BARRIER(lock, slp) \ 92 lockdebug_barrier(__func__, __LINE__, lock, slp) 93 #define LOCKDEBUG_MEM_CHECK(base, sz) \ 94 lockdebug_mem_check(__func__, __LINE__, base, sz) 95 96 #else /* LOCKDEBUG */ 97 98 #define LOCKDEBUG_ALLOC(lock, ops, addr) false 99 #define LOCKDEBUG_FREE(dodebug, lock) __nothing 100 #if 0 101 #define LOCKDEBUG_WANTLOCK(dodebug, lock, where, s, owantedp) __nothing 102 #define LOCKDEBUG_LOCKED(dodebug, lock, al, where, s, owantedp) __nothing 103 #else 104 #define LOCKDEBUG_WANTLOCK(dodebug, lock, where, s, owantedp) do \ 105 { \ 106 if ((owantedp) == NULL) \ 107 break; \ 108 /* Funny conditional checks type of owantedp. */ \ 109 *(0 ? (volatile void **)NULL : (owantedp)) = curlwp->l_ld_wanted; \ 110 curlwp->l_ld_wanted = (lock); \ 111 } while (0) 112 #define LOCKDEBUG_LOCKED(dodebug, lock, al, where, s, owantedp) do \ 113 { \ 114 if ((owantedp) == NULL) \ 115 break; \ 116 /* Funny conditional checks type of owantedp. */ \ 117 curlwp->l_ld_wanted = *(0 ? (volatile void **)NULL : (owantedp)); \ 118 *(0 ? (volatile void **)NULL : (owantedp)) = NULL; \ 119 } while (0) 120 #endif 121 #define LOCKDEBUG_UNLOCKED(dodebug, lock, where, s) __nothing 122 #define LOCKDEBUG_BARRIER(lock, slp) __nothing 123 #define LOCKDEBUG_MEM_CHECK(base, sz) __nothing 124 125 #endif /* LOCKDEBUG */ 126 127 #endif /* __SYS_LOCKDEBUG_H__ */ 128
Indexes created Tue Sep 01 00:24:37 UTC 2026