/* * Copyright (c) 2015 Apple 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@ */ #include "internal.h" /* * 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. */ static MALLOC_NOINLINE void * legacy_valloc(szone_t *szone, size_t size) { void *ptr; size_t num_kernel_pages; num_kernel_pages = round_page_quanta(size) >> vm_page_quanta_shift; ptr = large_malloc(szone, num_kernel_pages, 0, TRUE); #if DEBUG_MALLOC if (LOG(szone, ptr)) { malloc_report(ASL_LEVEL_INFO, "legacy_valloc returned %p\n", ptr); } #endif return ptr; } malloc_zone_t * create_legacy_scalable_zone(size_t initial_size, unsigned debug_flags) { malloc_zone_t *mzone = create_scalable_zone(initial_size, debug_flags); szone_t *szone = (szone_t *)mzone; if (!szone) { return NULL; } mprotect(szone, sizeof(szone->basic_zone), PROT_READ | PROT_WRITE); szone->basic_zone.valloc = (void *)legacy_valloc; szone->basic_zone.free_definite_size = NULL; mprotect(szone, sizeof(szone->basic_zone), PROT_READ); return mzone; }