/* * Copyright (c) 1999 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this * file. * * The 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, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_LICENSE_HEADER_END@ */ #import <malloc/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 #define SCALABLE_MALLOC_ABORT_ON_ERROR (1 << 4) // call abort() on any malloc error, such as double free or out of memory. #define SCALABLE_MALLOC_PURGEABLE (1 << 5) // allocate objects such that they may be used with VM purgability APIs #define SCALABLE_MALLOC_ABORT_ON_CORRUPTION (1 << 6) // call abort() on malloc errors, but not on out of memory. 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 */ extern malloc_zone_t *create_purgeable_zone(size_t initial_size, malloc_zone_t *malloc_default_zone, unsigned debug_flags); /* Create a new zone that supports malloc_make{un}purgeable() discipline. */ extern malloc_zone_t *create_legacy_scalable_zone(size_t initial_size, unsigned debug_flags); /* * For use by CheckFix: create a new zone whose behavior is, apart from * the use of death-row and per-CPU magazines, that of Leopard. */ /***** Private API for debug and performance tools ********/ extern boolean_t scalable_zone_statistics(malloc_zone_t *zone, malloc_statistics_t *stats, unsigned subzone); /* Fills stats with some statistics; 1 is returned on success; else 0 is returned Currently: subzone=0 => tiny; subzone=1 => small; subzone=2 => large; subzone=3 => huge; any other subzone => returns 0 */