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freebsd-skq/sys/vm/uma_dbg.h

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/* -> /*- for license, minor formatting changes
2005-01-07 02:29:27 +00:00
/*-
sys: general adoption of SPDX licensing ID tags. Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. No functional change intended.
2017-11-27 15:23:17 +00:00
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
Improve canonicalization of copyrights. Order copyrights by order of assertion (jeff, bmilekic, rwatson). Suggested ages ago by: bde MFC after: 1 week
2005-07-16 09:51:52 +00:00
* Copyright (c) 2002, 2003, 2004, 2005 Jeffrey Roberson <jeff@FreeBSD.org>
* Copyright (c) 2004, 2005 Bosko Milekic <bmilekic@FreeBSD.org>
* All rights reserved.
Add a new UMA debugging facility. This will overwrite freed memory with 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.
2002-04-30 07:54:25 +00:00
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice unmodified, this list of conditions, and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*
*/
/*
*
* This file includes definitions, structures, prototypes, and inlines used
* when debugging users of the UMA interface.
*
*/
#ifndef VM_UMA_DBG_H
#define VM_UMA_DBG_H
* Add a "how" argument to uma_zone constructors and initialization functions so that they know whether the allocation is supposed to be able to sleep or not. * Allow uma_zone constructors and initialation functions to return either success or error. Almost all of the ones in the tree currently return success unconditionally, but mbuf is a notable exception: the packet zone constructor wants to be able to fail if it cannot suballocate an mbuf cluster, and the mbuf allocators want to be able to fail in general in a MAC kernel if the MAC mbuf initializer fails. This fixes the panics people are seeing when they run out of memory for mbuf clusters. * Allow debug.nosleepwithlocks on WITNESS to be disabled, without changing the default. Both bmilekic and jeff have reviewed the changes made to make failable zone allocations work.
2004-08-02 00:18:36 +00:00
int trash_ctor(void *mem, int size, void *arg, int flags);
Add a new UMA debugging facility. This will overwrite freed memory with 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.
2002-04-30 07:54:25 +00:00
void trash_dtor(void *mem, int size, void *arg);
* Add a "how" argument to uma_zone constructors and initialization functions so that they know whether the allocation is supposed to be able to sleep or not. * Allow uma_zone constructors and initialation functions to return either success or error. Almost all of the ones in the tree currently return success unconditionally, but mbuf is a notable exception: the packet zone constructor wants to be able to fail if it cannot suballocate an mbuf cluster, and the mbuf allocators want to be able to fail in general in a MAC kernel if the MAC mbuf initializer fails. This fixes the panics people are seeing when they run out of memory for mbuf clusters. * Allow debug.nosleepwithlocks on WITNESS to be disabled, without changing the default. Both bmilekic and jeff have reviewed the changes made to make failable zone allocations work.
2004-08-02 00:18:36 +00:00
int trash_init(void *mem, int size, int flags);
Add a new UMA debugging facility. This will overwrite freed memory with 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.
2002-04-30 07:54:25 +00:00
void trash_fini(void *mem, int size);
Hide a pointer to the malloc_type bucket at the end of the freed memory. If this memory is modified after it has been freed we can now report it's previous owner.
2002-05-02 09:07:04 +00:00
/* For use only by malloc */
* Add a "how" argument to uma_zone constructors and initialization functions so that they know whether the allocation is supposed to be able to sleep or not. * Allow uma_zone constructors and initialation functions to return either success or error. Almost all of the ones in the tree currently return success unconditionally, but mbuf is a notable exception: the packet zone constructor wants to be able to fail if it cannot suballocate an mbuf cluster, and the mbuf allocators want to be able to fail in general in a MAC kernel if the MAC mbuf initializer fails. This fixes the panics people are seeing when they run out of memory for mbuf clusters. * Allow debug.nosleepwithlocks on WITNESS to be disabled, without changing the default. Both bmilekic and jeff have reviewed the changes made to make failable zone allocations work.
2004-08-02 00:18:36 +00:00
int mtrash_ctor(void *mem, int size, void *arg, int flags);
Hide a pointer to the malloc_type bucket at the end of the freed memory. If this memory is modified after it has been freed we can now report it's previous owner.
2002-05-02 09:07:04 +00:00
void mtrash_dtor(void *mem, int size, void *arg);
* Add a "how" argument to uma_zone constructors and initialization functions so that they know whether the allocation is supposed to be able to sleep or not. * Allow uma_zone constructors and initialation functions to return either success or error. Almost all of the ones in the tree currently return success unconditionally, but mbuf is a notable exception: the packet zone constructor wants to be able to fail if it cannot suballocate an mbuf cluster, and the mbuf allocators want to be able to fail in general in a MAC kernel if the MAC mbuf initializer fails. This fixes the panics people are seeing when they run out of memory for mbuf clusters. * Allow debug.nosleepwithlocks on WITNESS to be disabled, without changing the default. Both bmilekic and jeff have reviewed the changes made to make failable zone allocations work.
2004-08-02 00:18:36 +00:00
int mtrash_init(void *mem, int size, int flags);
Hide a pointer to the malloc_type bucket at the end of the freed memory. If this memory is modified after it has been freed we can now report it's previous owner.
2002-05-02 09:07:04 +00:00
void mtrash_fini(void *mem, int size);
Add a new UMA debugging facility. This will overwrite freed memory with 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.
2002-04-30 07:54:25 +00:00
#endif /* VM_UMA_DBG_H */
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