1b830beddb
This includes updates to the malloc_hook method and making everything components. This commit was SVN r6852.
46 строки
1.9 KiB
Objective-C
46 строки
1.9 KiB
Objective-C
/*
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* Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
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*
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* @APPLE_LICENSE_HEADER_START@
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this
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* file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_LICENSE_HEADER_END@
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*/
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#import <malloc/malloc.h>
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#define SCALABLE_MALLOC_ADD_GUARD_PAGES (1 << 0)
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// add a guard page before and after each VM region to help debug
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#define SCALABLE_MALLOC_DONT_PROTECT_PRELUDE (1 << 1)
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// do not protect prelude page
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#define SCALABLE_MALLOC_DONT_PROTECT_POSTLUDE (1 << 2)
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// do not protect postlude page
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#define SCALABLE_MALLOC_DO_SCRIBBLE (1 << 3)
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// write 0x55 onto free blocks
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extern malloc_zone_t *create_scalable_zone(size_t initial_size, unsigned debug_flags);
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/* Create a new zone that scales for small objects or large objects */
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/***** Private API for debug and performance tools ********/
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extern boolean_t scalable_zone_statistics(malloc_zone_t *zone, malloc_statistics_t *stats, unsigned subzone);
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/* Fills stats with some statistics;
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1 is returned on success; else 0 is returned
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Currently: subzone=0 => tiny; subzone=1 => small; subzone=2 => large; subzone=3 => huge; any other subzone => returns 0
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*/
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