/* * Copyright (c) 1999 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * The contents of this file constitute Original Code as defined in and * are subject to the Apple Public Source License Version 1.1 (the * "License"). You may not use this file except in compliance with the * License. Please obtain a copy of the License at * http://www.apple.com/publicsource and read it before using this file. * * This Original Code and all software distributed under the License are * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the * License for the specific language governing rights and limitations * under the License. * * @APPLE_LICENSE_HEADER_END@ */ #import <objc/malloc.h> #define SCALABLE_MALLOC_ADD_GUARD_PAGES (1 << 0) // add a guard page before and after each VM region to help debug #define SCALABLE_MALLOC_DONT_PROTECT_PRELUDE (1 << 1) // do not protect prelude page #define SCALABLE_MALLOC_DONT_PROTECT_POSTLUDE (1 << 2) // do not protect postlude page #define SCALABLE_MALLOC_DO_SCRIBBLE (1 << 3) // write 0x55 onto free blocks extern malloc_zone_t *create_scalable_zone(size_t initial_size, unsigned debug_flags); /* Create a new zone that scales for small objects or large objects */ /***** Private API for debug and performance tools ********/ #define scalable_zone_info_count 9 // maximum number of numbers extern void scalable_zone_info(malloc_zone_t *zone, unsigned *info, unsigned count); /* Fills info[] with some statistical information: info[0]: number of objects in use info[1]: number of bytes in use ... */