8efc4eff00
0xdeadc0de and then check for it just before memory is handed off as part of a new request. This will catch any post free/pre alloc modification of memory, as well as introduce errors for anything that tries to dereference it as a pointer. This code takes the form of special init, fini, ctor and dtor routines that are specificly used by malloc. It is in a seperate file because additional debugging aids will want to live here as well.
48 lines
1.8 KiB
C
48 lines
1.8 KiB
C
/*
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* Copyright (c) 2002, Jeffrey Roberson <jroberson@chesapeake.net>
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* 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 unmodified, this list of conditions, and the following
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* 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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*
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*/
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/*
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*
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* Jeff Roberson <jroberson@chesapeake.net>
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*
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* This file includes definitions, structures, prototypes, and inlines used
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* when debugging users of the UMA interface.
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*
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*/
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#ifndef VM_UMA_DBG_H
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#define VM_UMA_DBG_H
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void trash_ctor(void *mem, int size, void *arg);
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void trash_dtor(void *mem, int size, void *arg);
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void trash_init(void *mem, int size);
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void trash_fini(void *mem, int size);
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#endif /* VM_UMA_DBG_H */
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