The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/sys/lockdebug.h

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    1 /*      $NetBSD: lockdebug.h,v 1.10 2008/05/31 13:15:21 ad 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 #ifndef _KERNEL
   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 #define LOCKOPS_CV      2
   46 
   47 typedef struct lockops {
   48         const char      *lo_name;
   49         int             lo_type;
   50         void            (*lo_dump)(volatile void *);
   51 } lockops_t;
   52 
   53 #define LOCKDEBUG_ABORT(l, o, f, m)     lockdebug_abort(l, o, f, m)
   54 
   55 void    lockdebug_abort(volatile void *, lockops_t *,
   56                         const char *, const char *);
   57 
   58 void    lockdebug_lock_print(void *, void (*)(const char *, ...));
   59 
   60 #ifdef LOCKDEBUG
   61 
   62 bool    lockdebug_alloc(volatile void *, lockops_t *, uintptr_t);
   63 void    lockdebug_free(volatile void *);
   64 void    lockdebug_wantlock(volatile void *, uintptr_t, bool, bool);
   65 void    lockdebug_locked(volatile void *, void *, uintptr_t, int);
   66 void    lockdebug_unlocked(volatile void *, uintptr_t, int);
   67 void    lockdebug_barrier(volatile void *, int);
   68 void    lockdebug_mem_check(const char *, void *, size_t);
   69 void    lockdebug_wakeup(volatile void *, uintptr_t);
   70 
   71 #define LOCKDEBUG_ALLOC(lock, ops, addr)        lockdebug_alloc(lock, ops, addr)
   72 #define LOCKDEBUG_FREE(dodebug, lock) \
   73     if (dodebug) lockdebug_free(lock)
   74 #define LOCKDEBUG_WANTLOCK(dodebug, lock, where, s, t) \
   75     if (dodebug) lockdebug_wantlock(lock, where, s, t)
   76 #define LOCKDEBUG_LOCKED(dodebug, lock, al, where, s) \
   77     if (dodebug) lockdebug_locked(lock, al, where, s)
   78 #define LOCKDEBUG_UNLOCKED(dodebug, lock, where, s) \
   79     if (dodebug) lockdebug_unlocked(lock, where, s)
   80 #define LOCKDEBUG_BARRIER(lock, slp)            lockdebug_barrier(lock, slp)
   81 #define LOCKDEBUG_MEM_CHECK(base, sz)   \
   82     lockdebug_mem_check(__func__, base, sz)
   83 #define LOCKDEBUG_WAKEUP(dodebug, lock, where)  \
   84     if (dodebug) lockdebug_wakeup(lock, where)
   85 
   86 #else   /* LOCKDEBUG */
   87 
   88 #define LOCKDEBUG_ALLOC(lock, ops, addr)                false
   89 #define LOCKDEBUG_FREE(dodebug, lock)                   /* nothing */
   90 #define LOCKDEBUG_WANTLOCK(dodebug, lock, where, s, t)  /* nothing */
   91 #define LOCKDEBUG_LOCKED(dodebug, lock, al, where, s)   /* nothing */
   92 #define LOCKDEBUG_UNLOCKED(dodebug, lock, where, s)     /* nothing */
   93 #define LOCKDEBUG_BARRIER(lock, slp)                    /* nothing */
   94 #define LOCKDEBUG_MEM_CHECK(base, sz)                   /* nothing */
   95 #define LOCKDEBUG_WAKEUP(dodebug, lock, where)          /* nothing */
   96 
   97 #endif  /* LOCKDEBUG */
   98 
   99 #endif  /* __SYS_LOCKDEBUG_H__ */

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